Method for designing deck slab, information processing apparatus, program, and information processing system

Abstract

To support design of a deck slab considering a special load according to an individual, concrete setting condition acting on a deck slab in a construction phase of a building.SOLUTION: A method for designing a deck slab 1 includes: acquiring first arithmetic information 112A, second arithmetic information 112B, third arithmetic information 112C, fourth arithmetic information 112D, fifth arithmetic information 112E, sixth arithmetic information 112F, and determination information 112H; calculating, on the basis of the pieces of information, an index indicating cross-sectional performance of the deck slab 1, a uniformly distributed load acting on the deck slab 1, a special load acting on the deck slab 1, an effective width of the deck slab 1, and a load data pair; and calculating the structure of the deck slab 1, and determining whether a result of the calculation is equal to or less than a set reference value.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a design method, an information processing device, a program, and an information processing system for deck slabs, and more particularly to a design method, an information processing device, a program, and an information processing system for deck slabs that are subjected to concentrated loads, moving loads, repeated loads, etc. from vehicles, equipment, etc. [Background technology]

[0002] Conventionally, deck slabs have been widely used as the standard specification for floors in steel-framed buildings. As a floor component, a deck slab may be subjected to concentrated loads from vehicles and equipment, moving loads, and repeated loads (dynamic loads) in addition to loads that act constantly (static loads). Therefore, when designing a deck slab, structural calculations for the deck slab must be performed taking these loads into consideration. For example, Patent Document 1 discloses a structural calculation support system for performing structural calculations for buildings. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-091701 Summary of the Invention [Problem to be solved by the invention]

[0004] Concentrated loads, moving loads, and repeated loads (hereinafter also referred to as "special loads") acting on deck slabs by objects placed on the deck slab, such as vehicles and equipment, require a wide range of conditions to be set, so it takes time to perform structural calculations for deck slabs against special loads. Therefore, when calculating special loads, a simplified structural calculation method is generally used that places certain restrictions on the conditions to be set, so that the calculation results are on the safe side.

[0005] In addition, special loads include not only loads that act on a building using a deck slab after it is completed, but also loads that arise during the construction stage of the building, and it is necessary to perform structural calculations for the deck slab against special loads at each stage of construction. However, structural calculation support systems for structural calculations of buildings known to date use the simplified structural calculation method described above to calculate the special loads acting on deck slabs, and therefore are unable to perform rational structural calculations based on special loads according to specific individual set conditions.Furthermore, structural calculation support systems for structural calculations of buildings known to date are unable to calculate the special loads that arise during the construction stage of a building that uses deck slabs.

[0006] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a rational structural calculation based on special loads according to individual, specific set conditions, and a deck slab design method that takes into account special loads according to individual, specific set conditions that act on the deck slab during the construction stage of a building. [Means for solving the problem]

[0007] A deck slab design method according to a representative embodiment of the present invention is a deck slab design method, comprising: an acquisition step of acquiring first calculation information, second calculation information, third calculation information, fourth calculation information, fifth calculation information, sixth calculation information, and judgment information; a first calculation step of calculating an index showing the cross-sectional performance of the deck slab based on the first calculation information; a second calculation step of calculating a uniformly distributed load acting on the deck slab based on the second calculation information; and a concentrated load acting on the deck slab by an object placed on the deck slab based on the third calculation information. a third calculation step of calculating a certain special load; a fourth calculation step of calculating a deck slab effective width, which is the width of the range in which the deck slab bears the load when the special load acts on the deck slab, based on the fourth calculation information and the calculation result of the special load calculated in the third calculation step; and a combination of loads acting under specific conditions based on the fifth calculation information, the calculation result of the uniformly distributed load calculated in the second calculation step, the calculation result of the special load calculated in the third calculation step, and the calculation result of the deck slab effective width calculated in the fourth calculation step. the method includes a fifth calculation step of calculating a certain load data pair; a sixth calculation step of performing a structural calculation for the deck slab based on the sixth calculation information, the calculation result of an index representing cross-sectional performance calculated in the first calculation step, the calculation result of the deck slab effective width calculated in the fourth calculation step, and the calculation result of the load data pair calculated in the fifth calculation step; and a determination step of determining whether the result of the structural calculation calculated by the sixth calculation step is equal to or less than a reference value set based on the determination information and the calculation result of the index representing cross-sectional performance calculated in the first calculation step, wherein the first calculation information includes, as tension member specification information which is information regarding the physical properties and cross-sectional area of ​​the tension member, information regarding the height of the deck plate, information regarding the plate thickness of the deck plate, and information regarding the specifications of the reinforcing bars, and as compression member specification information which is information regarding the physical properties and cross-sectional area of ​​the compression member, information regarding the specifications of the concrete, and the second calculation information includes, as the tension member specification information, information regarding the height of the deck plate, information regarding the plate thickness of the deck plate, and information regarding the material of the deck plate,The third calculation information includes, as special load related information that is information related to calculation of the special load, at least some of the following: information on the load acting on the deck slab by a vehicle running on the deck slab, information on the wheel spacing of the vehicle, information on the wheelbase of the vehicle, information on the proportion of the load acting on the front wheels of the vehicle, and information on the impact coefficient that is a coefficient expressing the ratio of the dynamic load to the static load; and the fourth calculation information includes, as the special load related information that is information related to calculation of the special load, information on the support distance, additional support distance information that is information related to the deck plate laying direction and the distance between the main beams and the sub-beams, and information on the load acting on the deck slab when installing the deck slab. the fifth calculation information includes information on the support distance and the support distance additional information, the sixth calculation information includes at least one of information on the support distance, the support distance additional information, information on the skeleton, and information on the joining method, the determination information includes information on the material of the deck plate as the tensile member specification information, information on the concrete specification as the compression member specification information, and at least one of information on the support distance and information on the allowable stress of the deck slab, and the sixth calculation step includes a step of calculating, as the structural calculation, at least one of a maximum bending moment in the positive direction generated in the deck slab, a maximum bending moment in the negative direction generated in the deck slab, and a maximum deflection amount generated in the deck slab. [Effects of the Invention]

[0008] According to the present invention, it is possible to design a deck slab taking into consideration the specific special loads that act on the deck slab from the construction stage to the post-completion stage of a building. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a diagram illustrating a configuration example of a special load calculation system according to an embodiment of the present invention and a functional block configuration of an information processing device. [Figure 2] FIG. 2 is a diagram illustrating an example of information stored in a storage unit of an information processing device. [Figure 3] FIG. 1 is a diagram illustrating a hardware configuration of an information processing device. [Figure 4] 1 is a diagram showing a configuration example of a special load calculation system according to an embodiment of the present invention and a functional block configuration of a client terminal device; [Figure 5] FIG. 2 is a diagram illustrating a hardware configuration of a client terminal device. [Figure 6] FIG. 1 is a diagram showing an example of a deck slab to be designed according to the present invention. [Figure 7] FIG. 1 is a plan view of a forklift, which is an example of a special load. [Figure 8] FIG. 1 is a diagram showing the effective width of a deck slab. [Figure 9] FIG. 10 is a diagram showing an example of experimental results regarding the relationship between the effective width of a deck slab and a concentrated load per point. [Figure 10] FIG. 10 is a plan view showing the positional relationship between the deck slab and the forklift when the extending direction of the deck slab coincides with the traveling direction of the forklift. [Figure 11A] 11 is a diagram showing a load acting in FIG. 10 and a generated positive bending moment. FIG. [Figure 11B] 11A and 11B are diagrams illustrating loads acting on the structure shown in FIG. 10 and positive and negative bending moments that are generated. [Figure 11C] FIG. 11 is a diagram illustrating the load and shear forces acting in FIG. 10. [Figure 12] FIG. 1 is a plan view showing the positional relationship between the deck slab and the forklift when the extending direction of the deck slab is perpendicular to the traveling direction of the forklift. [Figure 13A]13 is a diagram showing a load acting in FIG. 12 and a generated positive bending moment. FIG. [Figure 13B] 13 is a diagram showing a load acting in FIG. 12 and a positive bending moment and a negative bending moment that are generated. FIG. [Figure 13C] FIG. 13 is a diagram illustrating the load and shear forces acting in FIG. 12. [Figure 14] This is a plan view showing a parking lot constructed using deck slabs. [Figure 15] FIG. 2 is a plan view showing an example of the positions of vehicles arranged in a parking lot. [Figure 16] FIG. 10 is a diagram showing the relationship between the effective width of the deck slab and concentrated loads. [Figure 17] FIG. 10 is a diagram showing an example of the position of a vehicle when the vehicle is placed in a parking area. [Figure 18] 18 is a diagram showing an example of a load acting in FIG. 17. FIG. [Figure 19] FIG. 10 is a diagram showing an example of the positions of vehicles when the vehicles are placed in a travel area. [Figure 20] 20 is a diagram showing an example of a load acting in FIG. 19. FIG. [Figure 21] FIG. 1 is a perspective view showing a bending moment generated in a deck slab installed in an area surrounded by a main girder and a secondary girder. [Figure 22A] FIG. 1 shows the load acting on a simply supported one-way deck slab and the resulting positive bending moment. [Figure 22B] FIG. 1 is a diagram showing the load acting on a deck slab fixed at both ends and the bending moment that occurs. [Figure 23A] FIG. 1 is a diagram showing the load acting on a one-way deck slab and the positive bending moment that occurs. [Figure 23B] FIG. 10 is a diagram showing the load acting on a two-way deck slab and the resulting positive bending moment. [Figure 24] This is an example of a perspective view of a portion of a deck slab that is the subject of special load calculations using the finite element method. [Figure 25]This is an example of the analysis results of a deck slab where generated moments were calculated using the finite element method. [Figure 26A] This is a diagram of a simply supported model of a deck slab that is the subject of calculation and on which a concentrated load acts. [Figure 26B] This is a diagram of a simply supported model of a deck slab that is the subject of calculation and to which a distributed load acts locally. [Figure 27] 1 is a flowchart showing a deck slab design method according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] 1. Overview of the embodiment First, an outline of representative embodiments of the invention disclosed in this application will be described. Note that in the following description, for example, reference numerals in the drawings corresponding to components in each embodiment will be written in parentheses.

[0011] [1] A design method for a deck slab (1) according to one aspect of the present invention includes an acquisition step (S1) of acquiring first calculation information (112A), second calculation information (112B), third calculation information (112C), fourth calculation information (112D), fifth calculation information (112E), sixth calculation information (112F), and judgment information (112H), a first calculation step (S2) of calculating an index indicating the cross-sectional performance of the deck slab (1) based on the first calculation information (112A), and a second calculation step (S3) of calculating a uniformly distributed load acting on the deck slab (1) based on the second calculation information (112B). a third calculation step (S4) of calculating a special load, which is a concentrated load acting on the deck slab (1) by an object placed on the deck slab (1), based on the third calculation information (112C); a fourth calculation step (S5) of calculating an effective deck slab width, which is a width of a range in which the deck slab (1) bears a load when the special load acts on the deck slab (1), based on the fourth calculation information (112D) and the calculation result of the special load calculated in the third calculation step (S4); a fifth calculation step (S6) for calculating a load data pair which is a combination of loads acting under specific conditions based on the calculation result of the uniformly distributed load calculated in the third calculation step (S4), the calculation result of the special load calculated in the third calculation step (S4), and the calculation result of the deck slab effective width calculated in the fourth calculation step (S5); and a fifth calculation step (S6) for calculating a load data pair which is a combination of loads acting under specific conditions based on the calculation result of the uniformly distributed load calculated in the third calculation step (S4), the calculation result of the special load calculated in the fourth calculation step (S5), and the calculation result of the deck slab effective width calculated in the fifth calculation step (S6). and a sixth calculation step (S7) of performing structural calculation of the deck slab (1) based on the calculation results of the weight data pairs, and a determination step (S10) of determining whether the result of the structural calculation calculated by the sixth calculation step (S7) is equal to or less than a reference value set based on the determination information (112H) and the calculation results of the index representing the cross-sectional performance calculated in the first calculation step (S2), wherein the first calculation information (112A) includes information on the height of the deck plate (2) as tensile material specification information which is information on the physical properties and cross-sectional area of ​​the tensile material,The second calculation information (112B) includes information on the thickness of the deck plate (2) and information on the specifications of the reinforcing bars (4), and includes information on the specifications of the concrete (3) as compression member specification information, which is information on the physical properties and cross-sectional area of ​​the compression member, and the second calculation information (112B) includes information on the height of the deck plate (2), information on the thickness of the deck plate (2), information on the material of the deck plate (2), and information on the specifications of the reinforcing bars (4) as the tension member specification information, and includes information on the specifications of the concrete (3) as the compression member specification information. and information on a support distance indicating an interval at which the deck plate (2) is supported by a plurality of beams, information on a live load and a finishing load acting on the deck slab (1), and information on a fixed load acting on the deck slab (1), and the third calculation information (112C) includes, as special load-related information that is information related to the calculation of the special load, information on a load acting on the deck slab (1) by vehicles (20, 30) running on the deck slab (1), information on a wheel spacing (WI) of the vehicles (20, 30), and information on a wheel spacing (WI) of the vehicles (20, 30). The fourth calculation information (112D) includes at least a part of information on the wheel base (WB), information on the ratio of the load acting on the front wheels of the vehicle (20), and information on the impact coefficient which is a coefficient representing the ratio of the dynamic load to the static load, and the fourth calculation information (112D) includes information on the support distance, additional support distance information which is information on the laying direction of the deck plate (2) and the distance between the main girder (52) and the sub-girder (53), information on the body on which the deck slab (1) is to be installed, and information on the joining method between the deck plate (2) and the beam, and the fifth calculation information (112E) includes information on the support distance and the additional support distance information, the sixth calculation information (112F) includes at least one of the information on the support distance, the additional support distance information, information on the skeleton, and information on the joining method, the determination information (112H) includes, as the tensile member specification information, information on the material of the deck plate (2), and as the compression member specification information, information on the specification of the concrete (3), the information on the support distance and information on the allowable stress of the deck slab (1),The sixth calculation step (S7) includes, as the structural calculation, a step of calculating at least one of a maximum bending moment in a positive direction occurring in the deck slab (1), a maximum bending moment in a negative direction occurring in the deck slab (1), and a maximum deflection amount occurring in the deck slab (1).

[0012] [2] The design method for the deck slab (1) described in [1] above further includes a seventh calculation step (S8) of acquiring seventh calculation information (112G) in the acquisition step (S1), the seventh calculation information (112G) including, as the tensile member specification information, information on the plate thickness of the deck plate (2), and as the compression member specification information, information on the specification of the concrete (3), and calculating an allowable shear stress of the deck slab (1) based on the seventh calculation information (112G), and the sixth calculation step (S7) includes, as the structural calculation, information on the support distance and information on the fourth It is preferable that the method further includes a step of calculating the maximum shear force acting on the deck slab (1) based on the calculation result of the deck slab effective width calculated in the calculation step (S5) and the calculation result of the load data pair calculated in the fifth calculation step (S6), and that the judgment step (S10) further includes a step of judging whether or not the maximum shear force acting on the deck slab (1) is below a standard value set based on the calculation result of the index representing the cross-sectional performance calculated in the first calculation step (S2), the maximum shear force calculated in the sixth calculation step (S7), and the calculation result of the allowable shear stress calculated in the seventh calculation step (S8).

[0013] [3] In the design method of the deck slab (1) described in [1] to [2] above, it is preferable that the information on the specific load includes at least one of information on the position and dimensions of the vehicle outriggers and the forces acting on them, information on the position and dimensions of the equipment foundation and the forces acting on them, and information on the position and dimensions of heavy equipment such as bookshelves, mobile bookshelves, and server racks and the like and the forces acting on them.

[0014] [4] In the design method of the deck slab (1) described in [1] to [3] above, it is preferable that the first calculation step (S2), the second calculation step (S3), the third calculation step (S4), the fourth calculation step (S5), the fifth calculation step (S6), and the sixth calculation step (S7) are performed using the finite element method.

[0015] [5] An information processing device (100) according to one aspect of the present invention is an information processing device (100) for executing structural calculations of a deck slab (1), and includes an input receiving unit (111) for receiving information transmitted from an information processing terminal (200) connected via a communication network (300), the information including at least one of first calculation information (112A), second calculation information (112B), third calculation information (112C), fourth calculation information (112D), fifth calculation information (112E), sixth calculation information (112F), and judgment information (112H), and a storage unit (112). and calculates an index indicating the cross-sectional performance of the deck slab (1) based on the first calculation information (112A), calculates a uniformly distributed load acting on the deck slab (1) based on the second calculation information (112B), calculates a special load, which is a concentrated load acting on the deck slab (1) by an object placed on the deck slab (1), based on the third calculation information (112C), and calculates a deck slab bearing capacity, which is a width of a range in which the deck slab (1) bears the load when the special load acts on the deck slab (1), based on the fourth calculation information (112D) and the calculation result of the special load. calculates a load data pair which is a combination of loads acting under specific conditions based on the fifth calculation information (112E), the calculation result of the uniformly distributed load, the calculation result of the special load, and the calculation result of the deck slab effective width; performs a structural calculation of the deck slab (1) based on the sixth calculation information (112F), the calculation result of the index representing the cross-sectional performance, the calculation result of the deck slab effective width, and the calculation result of the load data pair; and performs a structural calculation of the deck slab (1) based on the sixth calculation information (112F), the calculation result of the index representing the cross-sectional performance, and the judgment information (112H). a calculation unit (113) that performs a determination process to determine whether or not the result of the structural calculation is equal to or less than a reference value set based on the determination information (112H) based on the first calculation information (112A), and stores a calculation result (112I) including the result of the structural calculation and the result of the determination process in the storage unit (112); and an output unit (114) that transmits the calculation result (112I) stored in the storage unit (112) to the information processing terminal via the communication network (300), and the first calculation information (112A) is tensile material specification information that is information on the physical properties and cross-sectional area of ​​the tensile material, andThe second calculation information (112B) includes information on the height of the deck plate (2), information on the plate thickness of the deck plate (2), and information on the specifications of the reinforcing bars (4), and includes information on the specifications of the concrete (3) as compression member specification information, which is information on the physical properties and cross-sectional area of ​​the compression member, and the second calculation information (112B) includes information on the height of the deck plate (2), information on the plate thickness of the deck plate (2), information on the material of the deck plate (2), and information on the specifications of the reinforcing bars (4) as the tension member specification information. The third calculation information (112C) includes information on the specifications of the concrete (3), information on the support distance indicating the distance at which the deck plate (2) is supported by a plurality of beams, information on the live load and finish load acting on the deck slab (1), and information on the fixed load acting on the deck slab (1). The third calculation information (112C) includes, as special load-related information related to the calculation of the special load, information on the load acting on the deck slab (1) by vehicles (20, 30) running on the deck slab (1), and the wheel spacing ( The fourth calculation information (112D) includes at least a part of information on the support distance, information on the wheelbase (WB) of the vehicle (20, 30), information on the ratio of the load acting on the front wheels of the vehicle (20), and information on the impact coefficient which is a coefficient representing the ratio of the dynamic load to the static load, information on the support distance, additional support distance information which is information on the laying direction of the deck plate (2) and the distance between the main girder (52) and the sub-girder (53), information on the body on which the deck slab (1) is to be installed, and information on the joining method between the deck plate (2) and the beam the fifth calculation information (112E) includes information relating to the support distance and the support distance additional information, the sixth calculation information (112F) includes at least one of the information relating to the support distance, the support distance additional information, information relating to the skeleton, and information relating to the joining method, the determination information (112H) includes, as the tension member specification information, information relating to the material of the deck plate (2), and as the compression member specification information, information relating to the specifications of the concrete (3), the information relating to the support distance,and information on the allowable stress of the deck slab (1), the structural calculation of the deck slab performed by the calculation unit (113) includes a process of executing a calculation including at least one of a calculation of a maximum bending moment in a positive direction occurring in the deck slab (1), a calculation of a maximum bending moment in a negative direction occurring in the deck slab (1), and a calculation of a maximum deflection amount occurring in the deck slab (1), and the judgment process performed by the calculation unit (113) includes a process of judging whether or not at least one of the calculated maximum bending moment in a positive direction, maximum bending moment in a negative direction, and maximum deflection amount is equal to or less than a reference value set based on the judgment information (112H).

[0016] [6] In the information processing device (100) described in [5] above, the input receiving unit (111) receives seventh calculation information (112G) transmitted from the information processing terminal (200) connected via the communication network (300), and the seventh calculation information (112G) includes, as the tensile member specification information, information on the plate thickness of the deck plate (2), and as the compression member specification information, information on the specification of the concrete (3), and the calculation unit (113) calculates, as the structural calculation, the seventh calculation information (112G) ), calculates the allowable shear stress of the deck slab (1) based on the information on the support distance, the calculation result of the deck slab effective width, and the calculation result of the load data pair, calculates the maximum shear force acting on the deck slab (1) based on the information on the support distance, the calculation result of the deck slab effective width, and the calculation result of the load data pair, performs the judgment process to judge whether or not the calculation result of the maximum shear force is equal to or less than a reference value set based on the calculation result of the index representing the cross-sectional performance and the calculation result of the allowable shear stress, and stores the calculation result (112I) in the memory unit (112).

[0017] [7] In the information processing device (100) described in [5] to [6] above, it is preferable that the information regarding the specific load includes at least one of information regarding the position and dimensions of the vehicle's outriggers and the forces acting on them, information regarding the position and dimensions of the equipment foundation and the forces acting on it, and information regarding the position and dimensions of heavy equipment such as bookshelves, mobile bookshelves, and server racks and the like and the forces acting on them.

[0018] [8] In the information processing device (100) described in any one of [5] to [7] above, it is preferable that the calculation unit (113) performs the structural calculation using the finite element method.

[0019] [9] A program (102A) according to one aspect of the present invention is a program (102A) for executing structural calculation of a deck slab (1), and includes an input receiving step of receiving information including at least one of first calculation information (112A), second calculation information (112B), third calculation information (112C), fourth calculation information (112D), fifth calculation information (112E), sixth calculation information (112F), and judgment information (112H); A uniformly distributed load acting on the deck slab (1) is calculated based on the third calculation information (112C), a special load which is a concentrated load acting on the deck slab (1) by an object placed on the deck slab (1) is calculated based on the fourth calculation information (112D) and the calculation result of the special load, an effective deck slab width which is a width of a range in which the deck slab (1) bears the load when the special load acts on the deck slab (1) is calculated based on the fifth calculation information (112E), the calculation result of the uniformly distributed load, the calculation result of the special load, and the deck slab and calculating a load data pair, which is a combination of loads acting under specific conditions, based on the calculation result of the deck slab effective width and the sixth calculation information (112F); performing a structural calculation of the deck slab (1) based on the calculation result of the index representing the cross-sectional performance, the calculation result of the deck slab effective width, and the calculation result of the load data pair; and performing a determination process of determining whether or not the result of the structural calculation is equal to or less than a reference value set based on the determination information (112H), based on the sixth calculation information (112F), the calculation result of the index representing the cross-sectional performance, and the determination information (112H). and storing in a storage unit (112) a calculation result (112I) including the result of the structural calculation and the result of the determination process; and an output step of outputting the calculation result (112I) stored in the storage unit (112), wherein the first calculation information (112A) includes, as tensile material specification information that is information regarding the physical properties and cross-sectional area of ​​the tensile material, information regarding the height of the deck plate (2), information regarding the plate thickness of the deck plate (2), and information regarding the specification of the reinforcing bars (4);The second calculation information (112B) includes, as the compression member specification information, which is information about the physical properties and cross-sectional area of ​​the compression member, information about the specification of the concrete (3), and the second calculation information (112B) includes, as the tension member specification information, information about the height of the deck plate (2), information about the plate thickness of the deck plate (2), information about the material of the deck plate (2), and information about the specification of the reinforcing bars (4). The second calculation information (112B) includes, as the compression member specification information, information about the specification of the concrete (3), and a support interval indicating an interval at which the deck plate (2) is supported by a plurality of beams. The third calculation information (112C) includes, as special load-related information related to the calculation of the special load, information on the distance between the deck slab (1), information on the live load and the finishing load acting on the deck slab (1), and information on the fixed load acting on the deck slab (1), and the third calculation information (112C) includes, as special load-related information related to the calculation of the special load, information on the load acting on the deck slab (1) by the vehicles (20, 30) running on the deck slab (1), information on the wheel spacing (WI) of the vehicles (20, 30), information on the wheel base (WB) of the vehicles (20, 30), and information on the distribution of the load acting on the front wheels of the vehicle (20). the fourth calculation information (112D) includes at least a part of information on the inter-support distance, additional support distance information which is information on the laying direction of the deck plate (2) and the distance between the main girder (52) and the sub-girder (53), information on the body on which the deck slab (1) is to be installed, and information on the joining method between the deck plate (2) and the beam; the fifth calculation information (112E) includes the information on the inter-support distance and the additional support distance information; The sixth calculation information (112F) includes at least one of the information on the support distance, the additional support distance information, the information on the skeleton, and the information on the joining method, and the determination information (112H) includes, as the tensile member specification information, information on the material of the deck plate (2), and as the compression member specification information, information on the specification of the concrete (3), and includes at least one of the information on the support distance and information on the allowable stress of the deck slab (1), and the structural calculation of the deck slab isThe method includes a process of performing calculations including at least one of a calculation of a maximum bending moment in the positive direction occurring in the deck slab (1), a calculation of a maximum bending moment in the negative direction occurring in the deck slab (1), and a calculation of a maximum deflection amount occurring in the deck slab (1), and the determination process includes a process of determining whether or not at least one of the calculated maximum bending moment in the positive direction, maximum bending moment in the negative direction, and maximum deflection amount is equal to or less than a reference value set based on the determination information (112H).

[0020]

[10] The program (102A) described in [9] above further acquires seventh calculation information (112G) in the input receiving step, and the seventh calculation information (112G) includes, as the tensile member specification information, information on the plate thickness of the deck plate (2), and as the compression member specification information, information on the specification of the concrete (3), and the structural calculation in the calculation step includes calculation of the allowable shear stress of the deck slab (1) and calculation of the support stress based on the seventh calculation information (112G). It is preferable that the calculation step further includes a calculation of the maximum shear force acting on the deck slab based on information regarding the distance between the deck slabs, the calculation result of the effective width of the deck slab, and the calculation result of the load data pair, and that the judgment information further includes the calculation result of the index of cross-sectional performance and the calculation result of the allowable shear stress, and that the judgment process in the calculation step further includes a judgment process for judging whether the calculation result of the maximum shear force acting on the deck slab (1) is equal to or less than a reference value set based on the judgment information.

[0021]

[11] In the program (102A) described in [9] to

[10] above, it is preferable that the information regarding the specific load includes at least one of information regarding the position and dimensions of the vehicle's outriggers and the forces acting on them, information regarding the position and dimensions of the equipment foundation and the forces acting on it, and information regarding the position and dimensions of heavy equipment such as bookshelves, mobile bookshelves, and server racks and the like and the forces acting on them.

[0022]

[12] In the program (102A) described in [9] to

[11] above, it is preferable that the structural calculation is performed using the finite element method.

[0023]

[13] An information processing system (10) according to one aspect of the present invention is an information processing system (10) including an information processing terminal having a display device (215) and a server (100) connected to the information processing terminal (200) via a communication network (300), wherein the information processing terminal (200) receives first calculation information (112A), second calculation information (112B), third calculation information (112C), fourth calculation information (112D), fifth calculation information (112E), sixth calculation information (112F), and determination information (112H) input by a system user. a transmitting unit (212) that transmits the information received by the receiving unit (211) to the server (100) via the communication network (300); a receiving unit (213) that receives the information transmitted from the server (100) via the communication network (300); and a display control unit (214) that displays the information received by the receiving unit (213) on a display device (215), and the server (100) is connected to an information processing terminal (20) via the communication network (300). 11. An input receiving unit (111) for receiving information transmitted from a building construction company (building code: 110), the information including at least one of the first calculation information (112A), the second calculation information (112B), the third calculation information (112C), the fourth calculation information (112D), the fifth calculation information (112E), the sixth calculation information (112F), and the judgment information (112H), a storage unit (112), and an input receiving unit (111) for calculating an index indicating the cross-sectional performance of the deck slab (1) based on the first calculation information (112A) and for determining the cross-sectional performance of the deck slab (1) based on the second calculation information (112B). calculates a uniformly distributed load acting on the deck slab (1), calculates a special load which is a concentrated load acting on the deck slab (1) by an object placed on the deck slab (1) based on the third calculation information (112C), calculates a deck slab effective width which is the width of the range in which the deck slab (1) bears the load when the special load acts on the deck slab (1) based on the fourth calculation information (112D) and the calculation result of the special load, and calculates a deck slab effective width which is the width of the range in which the deck slab (1) bears the load when the special load acts on the deck slab (1) based on the fifth calculation information (112E), the calculation result of the uniformly distributed load, the calculation result of the special load, and the calculation result of the deck slab effective width,a load data pair, which is a combination of loads acting under specific conditions, is calculated based on the sixth calculation information (112F), the calculation result of the index representing the cross-sectional performance, the calculation result of the deck slab effective width, and the calculation result of the load data pair; a structural calculation of the deck slab (1) is performed based on the sixth calculation information (112F), the calculation result of the index representing the cross-sectional performance, and the determination information (112H), a determination process is performed to determine whether or not the result of the structural calculation is equal to or less than a reference value set based on the determination information (112H); and a calculation unit (113) that stores a calculation result (112I) including the result of the determination process in the storage unit (112), and an output unit (114) that transmits the calculation result (112I) stored in the storage unit (112) to the information processing terminal (200) via the communication network (300), wherein the first calculation information (112A) includes information about the height of the deck plate (2), information about the plate thickness of the deck plate (2), and information about the specifications of the reinforcing bars (4) as tension member specification information that is information about the physical properties and cross-sectional area of ​​the tension member, and The second calculation information (112B) includes, as the tensile member specification information, information on the height of the deck plate (2), information on the plate thickness of the deck plate (2), information on the material of the deck plate (2), and information on the specification of the reinforcing bars (4), and the second calculation information (112B) includes, as the tensile member specification information, information on the specification of the concrete (3), and information on an inter-support distance indicating an interval at which the deck plate (2) is supported by a plurality of beams. the third calculation information (112C) includes, as special load-related information related to the calculation of the special load, information on the load acting on the deck slab (1) by vehicles (20, 30) running on the deck slab (1), information on the wheel spacing (WI) of the vehicles (20, 30), information on the wheelbase (WB) of the vehicles (20, 30), information on the proportion of the load acting on the front wheels of the vehicle (20),and information on an impact coefficient which is a coefficient representing the ratio of a dynamic load to a static load, the fourth calculation information (112D) includes at least a part of information on the support distance, additional support distance information which is information on the laying direction of the deck plate (2) and the distance between the main girder (52) and the sub-girder (53), information on the body on which the deck slab (1) is to be installed, and information on a joining method between the deck plate (2) and the beams, and the fifth calculation information (112E) includes at least a part of information on the support distance, additional support distance information which is information on the laying direction of the deck plate (2) and the distance between the main girder (52) and the sub-girder (53), information on the body on which the deck slab (1) is to be installed, and information on a joining method between the deck plate (2) and the beams. The sixth calculation information (112F) includes at least one of information on the support distance, the support distance additional information, information on the skeleton, and information on the joining method, and the determination information (112H) includes, as the tensile member specification information, information on the material of the deck plate (2), and as the compression member specification information, information on the specification of the concrete (3), and the information on the support distance and information on the allowable stress of the deck slab (1). The structural calculation performed by the calculation unit (113) includes a process of executing a calculation including at least one of a calculation of a maximum bending moment in a positive direction occurring in the deck slab (1), a calculation of a maximum bending moment in a negative direction occurring in the deck slab (1), and a calculation of a maximum deflection amount occurring in the deck slab (1), and the judgment process performed by the calculation unit (113) includes a process of executing a calculation including at least one of a calculation of a maximum bending moment in a positive direction occurring in the deck slab (1), a calculation of a maximum bending moment in a negative direction occurring in the deck slab (1), and a calculation of a maximum deflection amount occurring in the deck slab (1). and a process of determining whether or not at least one of the above is equal to or less than a reference value set based on the determination information (112H), the receiving unit (213) receives the calculation result (112I) executed by the calculation unit (113) based on the information transmitted by the transmitting unit (212) and transmitted by the output unit (114) via the communication network (300), and the display control unit (214) displays the calculation result (112I) received by the receiving unit (213) on a display device (215).

[0024]

[14] In the information processing system (10) described in

[13] above, the input receiving unit (111) receives seventh calculation information (112G) transmitted from the information processing terminal (200) connected via the communication network (300), and the seventh calculation information (112G) includes, as the tensile member specification information, information on the plate thickness of the deck plate (2), and as the compression member specification information, information on the specification of the concrete (3). The calculation unit (113) calculates the seventh calculation information (112G) as the structural calculation. It is preferable that the allowable shear stress of the deck slab (1) is calculated based on the information on the support distance, the calculation result of the deck slab effective width, and the calculation result of the load data pair, and the determination process is performed to determine whether or not the calculation result of the maximum shear force is equal to or less than a reference value set based on the calculation result of the index representing the cross-sectional performance and the calculation result of the allowable shear stress, and the calculation result (112I) is stored in the memory unit (112).

[0025]

[15] In the information processing system (10) described in

[13] to

[14] above, it is preferable that the information regarding the specific load includes at least one of information regarding the position and dimensions of the vehicle's outriggers and the forces acting on them, information regarding the position and dimensions of the equipment foundation and the forces acting on it, and information regarding the position and dimensions of heavy equipment such as bookshelves, mobile bookshelves, and server racks and the like and the forces acting on them.

[0026]

[16] In the information processing system (10) described in

[13] to

[15] above, it is preferable that the calculation unit (113) performs the structural calculation using the finite element method.

[0027] 2. Specific examples of embodiments Specific examples of embodiments of the present invention will be described below with reference to the drawings. In the following description, components common to each embodiment will be given the same reference numerals, and repeated description will be omitted. It should be noted that the drawings are schematic, and the dimensional relationships and ratios of each element may differ from the actual situation. The drawings may also include portions with different dimensional relationships and ratios.

[0028] <Special load calculation system> FIG. 1 is a diagram showing an example of the configuration of a special load calculation system according to an embodiment of the present invention and a functional block configuration of an information processing device. FIG. 2 is a diagram illustrating an example of information stored in a storage unit of an information processing device.

[0029] The information processing system 10 shown in the figure is a system for supporting calculation of specific special loads acting on the deck slab 1. Hereinafter, the information processing system 10 will also be referred to as the "special load calculation system 10." Specifically, the special load calculation system 10 is a system that calculates the specific special loads acting on the deck slab 1 based on conditions specified by the system user when designing a specific building using the deck slab 1, and confirms whether the deck slab 1 meets the design requirements.

[0030] 1, the special load calculation system 10 includes an information processing device 100 and a client terminal device 200. The information processing device 100 and the client terminal device 200 are connected to a network 300, and data can be transmitted and received between the information processing device 100 and the client terminal device 200 via the network 300. 1 shows a case where one client terminal device 200 is connected to the network 300 in the special load calculation system 10, but multiple client terminal devices 200 may be connected to the network 300. The network 300 is, for example, a local area network (LAN).

[0031] In the following description, the information processing device 100 will also be simply referred to as the "server 100." In the following description, a user who operates the server 100 will also be referred to as a "system user."

[0032] First, the hardware configuration of the server 100 will be described.

[0033] FIG. 3 is a diagram illustrating a hardware configuration of the information processing device.

[0034] The server 100 includes, as hardware resources, an arithmetic unit 101, a storage unit 102, an input unit 103, an I / F (Interface) unit 104, an output unit 105, and a bus 106.

[0035] The arithmetic device 101 is configured with processors such as a CPU (Central Processing Unit) and a DSP (Digital Signal Processor). The storage device 102 has a storage area for storing programs for causing the arithmetic device 101 to execute various types of data processing, and data such as parameters and calculation results used in the data processing by the arithmetic device 101, and is configured with, for example, a ROM (Read Only Memory), a RAM (Random Access Memory), a HDD, and a flash memory.

[0036] Here, the program 102A includes a special load calculation program for causing a computer to function as the server 100, and is pre-installed in the storage device 102, for example.

[0037] The data 102B also includes calculation information 112A to 112G and determination information 112H as data for a special load calculation program.

[0038] The program and data may be distributed via a network, or may be written to a non-transitory computer readable medium such as a CD-ROM and distributed.

[0039] The input device 103 is a functional unit that detects input of information from the outside, and is composed of, for example, a keyboard, a mouse, a pointing device, buttons, a touch panel, etc. The I / F device 104 is a functional unit that sends and receives information to and from the outside, and is composed of a communication control circuit, an input / output port, an antenna, etc. for wired or wireless communication.

[0040] The output device 105 is a functional unit that outputs information obtained by data processing by the arithmetic device 101. Examples of the output device 105 include an external storage device such as an SSD or HDD, and a display device such as a console unit. The bus 106 is a functional unit that interconnects the arithmetic device 101, the storage device 102, the input device 103, the I / F device 104, and the output device 105, enabling data exchange among these devices.

[0041] In the server 100, each calculation device 101 executes calculations according to the programs and data stored in each storage device 102, and controls the storage device 102, input device 103, I / F device 104, output device 105, and bus 106 in each server, thereby realizing each functional block in the server 100 (input receiving unit 111, calculation unit 113, output unit 114, and storage unit 112).

[0042] Next, each functional block of the server 100 will be described in detail.

[0043] As shown in Figure 1, the server 100 has an input receiving unit 111, a calculation unit 113, an output unit 114, and a memory unit 112 as functional blocks for assisting in the calculation of specific special loads acting on the deck slab 1. These functional blocks are realized by the cooperation of the hardware resources and software that constitute the server 100.

[0044] The above software is a program for realizing assistance (native application) in calculating specific special loads acting on the deck slab 1 in this embodiment, and is, for example, downloaded in advance from an external device (e.g., an external storage medium) and stored in a storage device (e.g., storage unit 112) within the server 100.

[0045] The above program may be distributed via a network, or may be written to a computer-readable storage medium (non-transitory computer-readable medium) such as a CD-ROM or flash memory and distributed.

[0046] 3 by a system user or data input from outside the server 100. As a specific example, the input receiving unit 111 receives a request transmitted from a client terminal device 200 connected via the network 300, and instructs each functional unit in the server 100 to execute processing in accordance with the received request.

[0047] For example, the input receiving unit 111 receives the calculation information 112A to 112G and the judgment information 112H transmitted from the client terminal device 200 connected via the network 300, and stores the calculation information 112A to 112G and the judgment information 112H in the storage unit 112. Furthermore, for example, the input receiving unit 111 receives calculation information 112A to 112G and judgment information 112H input by the system user via the input device 103 in FIG. The calculation information 112A to 112G and the determination information 112H can be stored in advance in the storage unit 112 by a system administrator.

[0048] Furthermore, for example, when the input receiving unit 111 receives a request to instruct the calculation unit 113 to perform a calculation of the specific special load acting on the deck slab 1 specified by the calculation information 112A to 112G and the judgment information 112H, it instructs the calculation unit 113 to perform a calculation of the specific special load acting on the deck slab 1, and also instructs the output unit 114 to output the calculation result by the calculation unit 113 to the client terminal device 200 as a response.

[0049] The storage unit 112 is a functional unit that stores various data related to assistance in calculating specific special loads acting on the deck slab 1. For example, the storage unit 112 stores calculation information 112A to 112G and determination information 112H received by the input receiving unit 111, and a calculation result 112I by the calculation unit 113.

[0050] The first calculation information 112A includes information prepared in advance by a system administrator or the like, related to the calculation of indices that indicate the cross-sectional performance of the deck slab 1. For example, tension member specification information, which is information about the physical properties and cross-sectional area of ​​the tension member, includes information about the height of the deck plate 2, information about the plate thickness of the deck plate 2, and information about the specifications of the reinforcing bars 4, and compression member specification information, which is information about the physical properties and cross-sectional area of ​​the compression member, includes information about the specifications of the concrete 3, but is not limited to these. The information on the specifications of the concrete 3 includes information on the type of concrete 3, information on the thickness of the concrete 3, information on the strength of the concrete 3, and information on the rigidity of the concrete 3. In addition to these, information on the durability of the concrete 3 may also be included.

[0051] The second calculation information 112B includes information related to the calculation of the uniformly distributed load acting on the deck slab 1, which is prepared in advance by a system administrator or the like. For example, the tensile member specification information includes information related to the height of the deck plate 2, information related to the plate thickness of the deck plate 2, information related to the material of the deck plate 2, and information related to the specifications of the reinforcing bars 4, and the compression member specification information includes information related to the specifications of the concrete 3, information related to the support distance indicating the interval at which the deck plate 2 is supported by multiple beams, information related to the live load and finishing load acting on the deck slab 1, and information related to the fixed load acting on the deck slab 1, but is not limited to these. The information about the material of the deck plate 2 may include information about the surface treatment of the deck plate 2. For example, the information about the surface treatment of the deck plate 2 may include information about the type and amount of plating. The information on the specifications of the reinforcing bars 4 includes information on the type of reinforcing bars 4 (deformed reinforcing bars, steel wire, round steel, welded wire mesh, deformed wire welded wire mesh, reinforcing bar mesh, steel plate, resin rod member, etc.). More specifically, the information includes information on the material and diameter of the reinforcing bars 4, the position of the reinforcing bars 4 within the deck slab 1, and the pitch between the reinforcing bars 4. Live load is the load per unit area placed on the floor of a building. Finishing load is the load generated by the mass of floor finishing, ceiling, etc., which is not included in the live load. Dead load is the load generated by the mass of the deck plate, concrete, etc. Note that dead load does not include live load and finishing load.

[0052] The third calculation information 112C includes information related to the calculation of a special load, which is a concentrated load acting on the deck slab 1 by an object placed on the deck slab 1, prepared in advance by a system administrator or the like. For example, the information includes at least some of the following: information on the load acting on the deck slab 1 by the vehicles 20, 30 traveling on the deck slab 1 (including information on the position, dimensions, and acting force), information on the wheel spacing WI of the vehicles 20, 30, information on the wheelbase WB of the vehicles 20, 30, information on the proportion of the load acting on the front wheels 23 of the vehicle 20, and information on the impact coefficient, which is a coefficient representing the ratio of the dynamic load to the static load, but is not limited to these. The information about the load acting on the deck slab 1 includes information about the positions on the deck slab 1 at which the vehicles 20 and 30 will travel or be positioned. The concentrated load may include information on the area on which the concentrated load acts, the speed at which the concentrated load acts, and the number of times, duration, and frequency at which the concentrated load acts.

[0053] The fourth calculation information 112D includes information prepared in advance by a system administrator or the like related to the calculation of the deck slab effective width, which is the width of the range over which the deck slab will bear a load when a special load acts on the deck slab 1. For example, the information includes, but is not limited to, information about the support distance, additional support distance information which is information about the laying direction of the deck plate 2 and the distance between the main girders 52 and the secondary girders 53, information about the frame on which the deck slab 1 is installed, and information about the joining method between the deck plate 2 and the beams. Information regarding the structure on which the deck slab 1 is to be installed includes information regarding whether it is steel-framed, reinforced concrete, or wooden, as well as information regarding the columns and beams (including main beams 52 and secondary beams 53) (dimensions, material, composite beams), etc. The information relating to the joining method between the deck plate 2 and the beam includes information on whether it is stud welding (including headed studs), whether it is burnt-out plug welding, whether it is joining with a driven rivet, whether it is spot welding, bolt joining, drill screw joining, etc., whether it is by swallowing the deck plate or by using anchor reinforcement. Furthermore, the information relating to the joining method between the deck plate 2 and the beam can include information on the degree of fixation between the deck plate 2 and the beam. The additional support distance information includes information regarding whether the deck plate 2 is supported in the extension direction, whether the deck plate 2 is supported in the width direction, and the distance from the main beam 52 and the secondary beam 53.

[0054] The fifth calculation information 112E includes information related to calculation of load data pairs, which are combinations of loads acting under specific conditions prepared in advance by a system administrator, etc. For example, the fifth calculation information 112E includes information related to the support distance and the support distance additional information, but is not limited to these. The specific conditions are conditions related to the fixing method of the deck slab 1 specified based on the fifth calculation information 112E, and are conditions required for calculating bending moment, deflection, shear force, etc. when a specific load acts on the deck slab 1. Specifically, the conditions include information such as whether the structure is a pin-supported beam at both ends or a fixed-supported beam at both ends, and the degree of fixation of the deck slab 1, which will be described later. The load data pair refers to a combination of loads that act under specific conditions designated based on the fifth calculation information 112E. For example, load data pairs include, but are not limited to, combinations of live load Wl and finishing load Wc and effective wheel load per unit width PA (including information on the position of action), combinations of live load Wl, finishing load Wc and fixed load Wd acting on the overlap and effective wheel load PA per unit width (including information on the position of action), combinations of live load Wl and finishing load Wc and effective wheel load PB per unit width (including information on the position of action), combinations of live load Wl, finishing load Wc and fixed load Wd acting on the overlap and effective wheel load PB per unit width (including information on the position of action), equivalent concentrated loads PEA and PEB per 1 m width of deck slab 1 (including information on the position of action), uniformly distributed loads WS and WF acting on deck slab 1 (including information on the position of action), and combinations of concentrated load PC acting on deck slab 1 (including information on the position of action) and fixed load Wd acting on deck slab 1 (including information on the position of action). The specific load refers to a load generated by one selected from multiple types of load elements described below. The multiple types of load elements include, for example, the mass and dimensions of the forklift 20, vehicle 30, crawler crane vehicle, caterpillar vehicle, aerial work platform vehicle, passenger car, truck, equipment foundation, and mobile bookshelf, information on the position and dimensions of the outriggers of vehicles (crawler crane vehicle, caterpillar vehicle, truck, etc.) and the forces acting on them, information on the position and dimensions of the equipment foundation and the forces acting on them, and information on the position and dimensions of heavy equipment such as bookshelves, mobile bookshelves, and server racks and the like.

[0055] The sixth calculation information 112F includes information related to the structural calculation of the deck slab 1, which is prepared in advance by a system administrator or the like. For example, the sixth calculation information 112F includes information related to the support distance, additional support distance information, information related to the skeleton, and information related to the joining method, but is not limited to these. Note that only one of these pieces of information may be included depending on the conditions.

[0056] The seventh calculation information 112G includes information related to the calculation of the allowable shear stress of the deck slab 1, which is prepared in advance by a system administrator or the like. For example, the tensile member specification information includes information related to the plate thickness of the deck plate 2, and the compression member specification information includes information related to the specifications of the concrete 3, but is not limited to these.

[0057] The determination information 112H includes information related to the calculation of the reference value, which is prepared in advance by a system administrator, etc. For example, the tension member specification information includes information related to the material of the deck plate 2, the compression member specification information includes information related to the specifications of the concrete 3, information related to the support distance, and information related to the allowable stress of the deck slab 1, but is not limited to these. Note that only one of these pieces of information may be included depending on the conditions. The reference value is a value set for each parameter based on the judgment information 112H, the calculation results of the index representing the cross-sectional performance included in the calculation results 112I described later, and the results of the structural calculation included in the calculation results 112I described later. Specifically, the reference value for the maximum positive bending moment that occurs on the deck slab 1 is the allowable positive stress of the deck slab 1. Also, the reference value for the maximum negative bending moment that occurs on the deck slab 1 is the allowable negative stress of the deck slab 1. Also, the reference value for the maximum deflection that occurs on the deck slab 1 is the allowable deflection of the deck slab 1. Also, the reference value for the maximum shear force acting on the deck slab 1 is the allowable shear stress of the deck slab 1. The allowable stress of the deck slab 1 includes information on the long-term allowable stress, the medium-term allowable stress, the short-term allowable stress, the allowable stress during temporary use, and the like.

[0058] The calculation information 112A to 112G and the determination information 112H stored in the storage unit 122 may include not only information input by the system user but also information prepared in advance by a system administrator or the like.

[0059] The calculation results 112I are information that constitute part of the memory unit 112, and include the indexes that indicate the cross-sectional performance of the deck slab calculated in the calculation unit 113, the uniformly distributed load acting on the deck slab, the special load acting on the deck slab, the effective width of the deck slab, the load data pair, the calculation results of the structural calculation for deck slab 1, namely the maximum positive bending moment that occurs on deck slab 1, the maximum negative bending moment that occurs on deck slab 1, the maximum deflection that occurs on deck slab 1, and the maximum shear force that acts on deck slab 1, and the judgment results that determine whether the maximum positive bending moment that occurs on deck slab 1, the maximum negative bending moment that occurs on deck slab 1, the maximum deflection that occurs on deck slab 1, and the maximum shear force that acts on deck slab 1 are below the reference values ​​(allowable stress in the positive direction of deck slab 1, allowable stress in the negative direction of deck slab 1, allowable deflection of deck slab 1, allowable shear stress of deck slab 1).

[0060] The calculation unit 113 is a functional unit that performs various calculations related to the calculation of specific special loads acting on the deck slab 1. Specifically, the calculation unit 113 calculates a specific special load acting on the deck slab 1 based on the calculation information 112A to 112G and the determination information 112H stored in the storage unit 112.

[0061] For example, the calculation unit 113 calculates an index indicating the cross-sectional performance of the deck slab 1 based on the first calculation information 112A to calculate the specific special load acting on the deck slab 1, and stores the calculation result in the memory unit 112 as the calculation result 112I. Furthermore, for example, the calculation unit 113 calculates the uniformly distributed load acting on the deck slab 1 based on the second calculation information 112B as a calculation of the specific special load acting on the deck slab 1, and stores the calculation result in the memory unit 112 as the calculation result 112I. Furthermore, for example, the calculation unit 113 calculates the specific special load acting on the deck slab 1 by calculating the special load, which is a concentrated load acting on the deck slab 1 by an object placed on the deck slab 1, based on the third calculation information 112C, and stores the calculation result in the memory unit 112 as the calculation result 112I. Furthermore, for example, the calculation unit 113 calculates the specific special load acting on the deck slab 1 by calculating the deck slab effective width VW, which is the width of the range in which the deck slab 1 bears the load when a special load acts on the deck slab 1, based on the fourth calculation information 112D and the calculation result of the special load acting on the deck slab 1 included in the calculation result 112I, and stores the calculation result in the memory unit 112 as the calculation result 112I. Furthermore, for example, the calculation unit 113 calculates a specific special load acting on the deck slab 1 by calculating a load data pair, which is a combination of loads acting under specific conditions, based on the fifth calculation information 112E, the calculation result of the uniformly distributed load included in the calculation result 112I, the calculation result of the special load included in the calculation result 112I, and the calculation result of the deck slab effective width VW included in the calculation result 112I, and stores the calculation result in the memory unit 112 as the calculation result 112I. Furthermore, for example, the calculation unit 113 performs structural calculations of the deck slab based on the sixth calculation information 112F, the calculation results of the index representing the cross-sectional performance included in the calculation result 112I, the calculation results of the deck slab effective width VW included in the calculation result 112I, and the calculation results of the load data pairs included in the calculation result 112I to calculate the specific special load acting on the deck slab 1, and stores the calculation results in the memory unit 112 as the calculation result 112I. Furthermore, for example, the calculation unit 113 calculates the allowable shear stress of the deck slab 1 based on the seventh calculation information 112G as a calculation of the specific special load acting on the deck slab 1, and stores the calculation result in the memory unit 112 as the calculation result 112I.

[0062] Furthermore, for example, the calculation unit 113 calculates the specific special load acting on the deck slab 1 by calculating the maximum positive bending moment occurring on the deck slab 1, the maximum negative bending moment occurring on the deck slab 1, and the maximum deflection amount occurring on the deck slab 1 based on the sixth calculation information 112F, the calculation results of the index representing the cross-sectional performance included in the calculation result 112I, the calculation results of the deck slab effective width VW included in the calculation result 112I, and the calculation results of the load data pair included in the calculation result 112I, and stores the calculation results in the memory unit 112 as the calculation result 112I. Furthermore, for example, the calculation unit 113 calculates the specific special load acting on the deck slab 1 by calculating the maximum shear force acting on the deck slab 1 based on information regarding the support distance, the calculation result of the deck slab effective width VW included in the calculation result 112I, and the calculation result of the load data pair included in the calculation result 112I, and stores the calculation result in the memory unit 112 as the calculation result 112I.

[0063] In addition, the calculation unit 113 calculates reference values ​​(allowable stress in the positive direction of deck slab 1, allowable stress in the negative direction of deck slab 1, allowable deflection of deck slab 1, allowable shear stress of deck slab 1) based on the judgment information 112H, the calculation results of the indexes representing cross-sectional performance included in the calculation results 112I, and the results of the structural calculation included in the calculation results 112I, and stores the calculation results in the memory unit 112 as the calculation results 112I. Furthermore, for example, the calculation unit 113 performs a determination process to determine whether or not the maximum positive bending moment occurring in the deck slab 1, the maximum negative bending moment occurring in the deck slab 1, the maximum deflection occurring in the deck slab 1, and the maximum shear force acting on the deck slab 1, which are included in the calculation result 112I, are equal to or less than reference values. Furthermore, the calculation unit 113 includes the determination result from the above determination process in the calculation result 112I, and stores it in the memory unit 112.

[0064] The calculation unit 113 calculates the maximum bending moment in the positive direction that occurs in the deck slab 1 based on equations (1) to (87) and the finite element method, which will be described later. Furthermore, the calculation unit 113 calculates the maximum bending moment in the negative direction that occurs in the deck slab 1 based on equations (1) to (87) and the finite element method, which will be described later. Furthermore, the calculation unit 113 calculates the maximum amount of deflection occurring in the deck slab 1 based on equations (1) to (87) and the finite element method, which will be described later. Furthermore, the calculation unit 113 calculates the maximum shear force acting on the deck slab 1 based on equations (1) to (87) and the finite element method, which will be described later. The calculation unit 113 also calculates the allowable stress intensity in the positive direction of the deck slab 1 based on equations (1) to (87) described below. Furthermore, the calculation unit 113 calculates the allowable stress intensity in the negative direction of the deck slab 1 based on the formulas (1) to (87) described later. The calculation unit 113 also calculates the allowable deflection of the deck slab 1 based on equations (1) to (87) described below. Moreover, the calculation unit 113 calculates the allowable shear stress of the deck slab 1 based on the formulas (1) to (87) described later.

[0065] The output unit 114 is a functional unit that outputs data to the outside of the server 100. As a specific example, the output unit 114 transmits the calculation result stored in the calculation result 112I to the client terminal device 200 via the network 300. Also, for example, the output unit 114 displays the calculation result to the system user via the output device 105 in FIG. The calculation result 112I may include all or any one of the following: an index indicating the cross-sectional performance of the deck slab, a uniformly distributed load acting on the deck slab, a special load acting on the deck slab, an effective width of the deck slab, a load data pair, the calculation results of the maximum positive bending moment occurring on the deck slab 1, the maximum negative bending moment occurring on the deck slab 1, the maximum deflection occurring on the deck slab 1, and the maximum shear force acting on the deck slab 1; and a determination result determining whether the maximum positive bending moment occurring on the deck slab 1, the maximum negative bending moment occurring on the deck slab 1, the maximum deflection occurring on the deck slab 1, and the maximum shear force acting on the deck slab 1 are below the reference values ​​(allowable stress in the positive direction of the deck slab 1, allowable stress in the negative direction of the deck slab 1, allowable deflection of the deck slab 1, and allowable shear stress of the deck slab 1).

[0066] Next, the hardware configuration of the client terminal device 200 will be described.

[0067] FIG. 5 is a diagram illustrating a hardware configuration of the client terminal device.

[0068] The client terminal device 200 includes, as hardware resources, an arithmetic unit 201, a storage device 202, an input device 203, an I / F (Interface) device 204, an output device 205, and a bus 206.

[0069] The arithmetic device 201 is configured with processors such as a CPU (Central Processing Unit) and a DSP (Digital Signal Processor). The storage device 202 has a storage area for storing programs for causing the arithmetic device 201 to execute various data processing operations, and data such as parameters and calculation results used in the data processing by the arithmetic device 201, and is configured with, for example, a ROM (Read Only Memory), a RAM (Random Access Memory), a HDD, and a flash memory.

[0070] Here, the programs include programs such as an OS and a browser for causing a computer to function as the client terminal device 200, and are pre-installed in the storage device 202, for example.

[0071] The input device 203 is a functional unit that detects input of information from the outside, and is composed of, for example, a keyboard, a mouse, a pointing device, buttons, a touch panel, etc. The I / F device 204 is a functional unit that sends and receives information to and from the outside, and is composed of a communication control circuit, an input / output port, an antenna, etc. for wired or wireless communication.

[0072] The output device 205 is a functional unit that outputs information obtained by data processing by the arithmetic device 201. Examples of the output device 205 include external storage devices such as SSDs and HDDs, and display devices such as LCDs (Liquid Crystal Displays) and organic EL (Electro Luminescence) displays. The bus 206 is a functional unit that interconnects the arithmetic device 201, storage device 202, input device 203, I / F device 204, and output device 205, enabling data exchange among these devices.

[0073] In the client terminal device 200, the calculation device 201 executes calculations in accordance with a program stored in the memory device 202, and controls the memory device 202, the input device 203, the I / F device 204, the output device 205, and the bus 206, thereby realizing each functional block of the client terminal device 200 shown in Figure 4 (reception unit 211, transmission unit 212, reception unit 213, display control unit 214).

[0074] For example, the reception unit 211, transmission unit 212, reception unit 213, and display control unit 214 are realized by an OS (Operating System) and browser programs pre-installed in the client terminal device 200. In other words, the browser is downloaded in advance from an external device (e.g., a server on the Internet) and stored in a storage device 202 in the client terminal device 200, which will be described later.

[0075] Next, each functional block of the client terminal device 200 will be described in detail.

[0076] FIG. 4 is a diagram showing an example of the configuration of a special load calculation system and a functional block configuration of a client terminal device according to an embodiment of the present invention.

[0077] The client terminal device 200 is an information processing device (program processing device) used by a system user who wishes to obtain the structural calculation results of a deck plate, etc. As shown in FIG. 4 , the client terminal device 200 has a reception unit 211, a transmission unit 212, a reception unit 213, a display control unit 214, and a display device 215. These functional units are realized by the cooperation of the hardware resources and software that constitute the client terminal device 200.

[0078] The reception unit 211 is a functional unit that receives various data inputs and instructions from system users.

[0079] Specifically, the receiving unit 211 receives input of the calculation information 112A to 112G and the judgment information 112H. For example, the receiving unit 211 receives values ​​and the like input by a system user into an input form of a web page displayed on the display device 215 by a web browser as the calculation information 112A to 112G and the judgment information 112H.

[0080] The receiving unit 211 also receives an instruction to execute calculation of a specific special load acting on the deck slab 1 specified by the calculation information 112A-112G as a calculation of a specific special load acting on the deck slab 1 based on the input calculation information 112A-112G and determination information 112H. Furthermore, the receiving unit 211 receives an instruction to execute a determination process to determine whether the calculated special load satisfies a reference value (e.g., the value of the allowable stress in the forward direction of the deck slab 1 when the calculated special load is the maximum bending moment in the forward direction acting on the deck slab 1) set based on the determination information 112H, the calculation result of the index representing the cross-sectional performance included in the calculation result 112I, and the result of the structural calculation included in the calculation result 112I. For example, the receiving unit 211 receives an instruction to execute calculation of the special load and determination process when the execute button of the web browser displayed on the screen of the display device 215 is selected (clicked).

[0081] The transmitting unit 212 is a functional unit that transmits a request and various data according to instructions input by the system user via the receiving unit 211 to the server 100. For example, the transmitting unit 212 transmits a request including an instruction to execute processing (calculation and determination processing of special loads) based on the calculation information 112A to 112G and the determination information 112H according to instructions input by the system user via the receiving unit 211 to the server 100 via the network 300.

[0082] The receiving unit 213 is a functional unit that receives various data transmitted from the server 100. Specifically, the receiving unit 213 receives a response from the server 100 via the network 300 in response to the request output from the transmitting unit 212. For example, when the client terminal device 200 accesses the server 100 via a web browser, the receiving unit 213 receives an HTML file transmitted from the server 100 and provides it to the display control unit 214. The display control unit 214 displays a web page based on the received HTML file on the screen of the display device 215. The receiving unit 213 also receives results of calculations and determination processes of specific special loads acting on the deck slab 1 as a response to the request output from the transmitting unit 212, and provides them to the display control unit 214. The display control unit 214 displays the received results of calculations and determination processes of specific special loads acting on the deck slab 1 on the display device 215.

[0083] The display control unit 214 is a functional unit that instructs the display device 215 to display various types of information. For example, the display control unit 214 instructs the display device 215 to display a web page using a web browser. In addition, the display control unit 214 instructs the display device 215 to display information included in a response transmitted from the output unit 114 of the server 100 in response to a request transmitted by the transmission unit 212.

[0084] The display control unit 214 is a functional unit that controls the display device 215 to display various information on the screen of the display device 215. The display control unit 214 draws on the screen of the display device 215 the results of calculation and determination processing of specific special loads acting on the deck slab 1. The display device 215 may be integrated with the client terminal device 200 as in this embodiment, or may be configured separately from the client terminal device 200.

[0085] <<Design Elements>> The elements required for designing a deck slab according to an embodiment of the present invention are shown below. FIG. 6 is a diagram showing an example of a deck slab that is a design target of the present invention.

[0086] In this example, the deck slab 1 is obtained by placing reinforcing bars on top of a deck plate 2 laid on a beam material (not shown), and pouring concrete 3 therein. The deck slab 1, consisting of a deck plate 2, concrete 3, and reinforcing bars 4, has a predetermined dimension in the Z direction, and in Figure 6, the height of the deck plate 2 is TS, the thickness of the deck plate 2 is TD, and the thickness of the concrete 3 is TC. Note that although a peak-valley type deck plate is shown here as an example, slabs using deck plates with flat top surfaces or deck plates equipped with reinforcing bar trusses are also included in the deck slabs to be designed in this invention. In the present invention, the special load acting on the deck slab 1 is calculated.

[0087] FIG. 7 is a plan view of a forklift, which is an example of a special load.

[0088] First, as an example of a special load acting on the deck slab 1, a concentrated load caused by the forklift 20 will be calculated.

[0089] The forklift 20 has a main body 21 and a fork 22 . The main body 21 is a functional part that has a prime mover and a driver's seat where a person operates the forklift 20. The fork section 22 is a functional section that holds cargo loaded on a pallet or the like. The main body 21 also has two front wheels 23 and two rear wheels 24 on each side. The forklift 20 has a wheelbase WB, which is the distance between the axles of the front wheels 23 and the rear wheels 24, and also has a wheel spacing WI, which is the distance between the left and right front wheels 23. In the present invention, a design example is shown in which the mass of the forklift 20 is 2950 N, the wheelbase WB is 1100 mm, and the wheel spacing WI is 870 mm.

[0090] It is known that the load acting on the deck slab 1 by the front wheels 23 of the forklift 20 and the load acting on the deck slab 1 by the rear wheels 24 of the forklift 20 are uneven. Therefore, when designing the deck slab 1, it is necessary to take into consideration the proportion LR of the load acting on the deck slab 1 by the front wheels 23 of the forklift 20 out of the load acting on the deck slab 1 by the entire forklift 20. In the present invention, the concentrated load due to the forklift 20 is calculated assuming that the ratio LR of the load acting on the deck slab 1 by the front wheels 23 of the forklift 20 is 0.8.

[0091] In addition, among the loads acting on the deck slab 1 when the forklift 20 is moving, the load acting on the deck slab 1 while moving and the load acting on the deck slab 1 at the start of moving are uneven, and generally the load acting on the deck slab 1 at the start of moving is greater. Therefore, when the forklift 20 starts traveling, the load acting on the deck slab must take into consideration the impact coefficient IC, which is a coefficient that represents the ratio of the dynamic load to the static load. In the present invention, the concentrated load caused by the forklift 20 is calculated assuming that the impact coefficient IC is 1.3. <<Calculating the effective width of the deck slab>>

[0092] FIG. 8 is a diagram showing the effective width of the deck slab. FIG. 9 is a diagram showing an example of the experimental results regarding the relationship between the effective width of the deck slab and the concentrated load per point. An example of a method for calculating the effective width of the deck slab by the calculation unit 113 will be described below.

[0093] In Figure 8, a concentrated load P acts on a deck slab 1 laid in the X direction with a support distance L. When concentrated load P acts on the deck slab 1, there is a limit to the range in the Y direction (width direction) of the deck slab 1 that can bear the concentrated load P. The width of the range in the width direction of the deck slab 1 that can bear the concentrated load P is called the deck slab effective width VW (or effective width VW).

[0094] Figure 9 shows the experimental results E1 regarding the relationship between the effective width VWE1 of the deck slab 1 and the concentrated load P per point. In Figure 9, the value of the concentrated load P per point (unit: t) is shown along the horizontal axis, and the value of the effective width VWE1 (unit: mm) is shown along the vertical axis. In the experimental result E1, when the concentrated load P per point is 1.0t (=9800N), the effective width VWE1 is 2100mm, and when the concentrated load P per point is 3.0t (=29400N), the effective width VWE1 is 1500mm.

[0095] In the present invention, the size of two-thirds of the support distance L is compared with the value of the experimental result E1, and the smaller value is adopted as the value of the deck slab effective width VW, and the concentrated load by the forklift 20 is calculated.

[0096] In other words, the effective width VW of the deck slab can be calculated using the following formula when the concentrated load P per point is 1.0 t or less.

[0097] VW=MIN(2L / 3,2100)…(1) Note that MAX(2L / 3, 2100) means that the smaller value of 2L / 3 and 2100 is adopted.

[0098] In addition, when the concentrated load P per point exceeds 1.0 t, the effective width VW of the deck slab can be calculated using the following formula:

[0099] VW=MIN{2L / 3,―300(P―1)+2100}…(2) Note that MIN{2L / 3, -300(P-1)+2100} means that the smaller value of 2L / 3 and -300(P-1)+2100 is adopted.

[0100] <<An example of a deck slab structural calculation using the calculation unit (part 1)>> Next, the load acting when the forklift 20 travels in the extending direction of the deck slab 1 will be calculated. FIG. 10 is a plan view showing the positional relationship between the deck slab and the forklift when the extending direction of the deck slab coincides with the traveling direction of the forklift. FIG. 11A is a diagram showing the load acting on the structure shown in FIG. 10 and the positive bending moment that is generated. FIG. 11B is a diagram showing the load acting in FIG. 10 and the positive and negative bending moments that are generated. FIG. 11C is a diagram illustrating the load and shear forces acting in FIG. Below, an example of a method for calculating the load data pair by the calculation unit 113, the maximum positive bending moment occurring on the deck slab, the maximum negative bending moment occurring on the deck slab, the maximum deflection occurring on the deck slab, and the maximum shear force acting on the deck slab will be described.

[0101] In this example, the height TS of the deck plate 2 is 75 mm, the plate thickness TD of the deck plate 2 is 1.2 mm, the thickness TC of the concrete 3 is 80 mm, and the type of concrete 3 is concrete with a density of 23.0 kN / m 3 The design strength Fc of ordinary concrete and concrete 3 is 24N / mm 2 The material of deck plate 2 is ordinary steel, the surface treatment of deck plate 2 (galvanization, etc.) is Z12, and the design standard strength (yield point) Ft of the steel material is 235N / mm 2 The specifications of the rebar 4 are that the diameter of the rebar is φ6 and the spacing between the rebars is 100 x 100 mm, the support distance L of the deck plate 2 is 2250 mm, and the live load Wl and the finishing load Wc acting on the deck slab 1 (however, the live load Wl and the load acting by the forklift 20 are not assumed to act simultaneously, and Wc is 0 N / m 2 (assumed to be 820N / m 2 , the dead load Wd acting on deck slab 1 is 2930N / m 2 Design is carried out as follows. In addition, steel materials include not only deck plates but also reinforcing bars, welded wire mesh, reinforcing bars, etc.

[0102] Figure 10 shows a state in which the forklift 20 is traveling in the extension direction of the deck slab 1, and the forklift 20 is stationary in the X-axis direction so that the front wheels 23 of the forklift 20 overlap with the midpoint L / 2 of the support distance L of the deck slab 1. Considering the ratio LR of the load acting on the deck slab 1 by the front wheels 23 of the forklift 20 and the value of the impact coefficient IC, when the forklift 20 travels in the extension direction of the deck slab 1, the load acting on the deck slab 1 by the forklift 20 is greatest at the point where the midpoint L / 2 of the support distance L of the deck slab 1 overlaps with the front wheels 23 of the forklift 20.

[0103] In FIG. 10, it can be seen that the deck slab 1 and the forklift 20 are symmetrical in the Y-axis direction when the axis of symmetry AS is taken as the center. In addition, the deck slab effective range 25, which is the range over which the load from one front wheel 23 of the forklift 20 acts, has the length of the support distance L of the deck slab 1 in the X-axis direction, and has the length of the deck slab effective width VW1 in an example (part 1) of the deck slab structural calculation by the calculation unit 113 in the Y-axis direction. The load acting on the deck slab effective range 25 by the front wheels 23 on one side of the forklift 20 is the maximum load PFL acting on the deck slab 1 by the forklift 20 when the forklift 20 travels in the extension direction of the deck slab 1.

[0104] Here, the effective wheel load per unit width PA can be calculated by dividing the maximum load PFL acting on the deck slab 1 by the forklift 20 by the effective width VW1 of the deck slab in an example (part 1) of the structural calculation of the deck slab by the calculation unit 113, and therefore the effective wheel load PA per unit width can be calculated. The effective wheel load per unit width PA can be calculated using the following formula:

[0105] PA=PFL / VW1…(3)

[0106] From the above formula (3), it can be seen that when calculating the effective wheel load PA per unit width, it is necessary to calculate the specific values ​​of the maximum load PFL acting on the deck slab 1 by the forklift 20 and the deck slab effective width VW1 in an example (part 1) of the deck slab structural calculation by the calculation unit 113.

[0107] As shown in FIG. 10, in an example (part 1) of the structural calculation of the deck slab by the calculation unit 113, the effective deck slab width VW1 satisfies the following relational expression in relation to the effective deck slab width VW and the wheel spacing WI.

[0108] VW1=(VW+WI) / 2…(4)

[0109] Here, in order to determine the specific value of the deck slab effective width VW1 in an example (part 1) of the deck slab structural calculation by the calculation unit 113, it is necessary to determine the value of the load PFL acting by one front wheel 23 of the forklift 20, and therefore the load PFL is calculated based on the above formulas (1) and (2).

[0110] Since the mass of the forklift 20 is 2950 kg, the load PFL acting on one front wheel 23 of the forklift 20 can be calculated from the following relational expression.

[0111] PFL = 2950 × 9.8 × LR × IC / 2…(5)

[0112] In the above formula (5), the load ratio LR acting on the deck slab 1 by the front wheels 23 of the forklift 20 is 0.8 and the impact coefficient IC is 1.3, so the load PFL acting by the front wheels 23 on one side of the forklift 20 is calculated to be 15033 N.

[0113] The load PFL value of 15033N is equivalent to 1.53t in tons, so based on the above formula (2), the effective width VW of the deck slab is calculated to be 1500mm.

[0114] Therefore, the deck slab effective width VW1 in the example (part 1) of the structural calculation of the deck slab by the calculation unit 113 is calculated to be 1185 mm based on the above formula (2).

[0115] Using the above equations (2) and (5), the load PFL acting from one front wheel 23 of the forklift 20 and the specific values ​​of the deck slab effective width VW1 in an example (part 1) of the deck slab structural calculation by the calculation unit 113 can be obtained, and therefore, based on the above equation (3), it can be seen that the effective wheel load PA per unit width is 12,690 N / m.

[0116] Next, the maximum bending moment Mfmax in the positive direction and the maximum deflection δmax occurring in the deck slab 1 are calculated.

[0117] As shown in Figure 11A, the deck slab 1, which has a pin-supported beam structure at both ends, is subjected to uniformly distributed loads: live load Wl, finishing load Wc, and fixed load Wd, as well as concentrated loads: effective wheel load PA per unit width. When these loads act on the deck slab 1, a positive bending moment Mf and deflection δ occur in the deck slab 1. Of the positive bending moments Mf that occur in the deck slab 1, the maximum positive bending moment Mfmax occurs at the midpoint of the support distance L of the deck slab 1, in other words, at the point where LA = LA in the X direction (LA = L / 2). When designing the deck slab 1, it is necessary to confirm that the maximum bending moment Mfmax occurring in the deck slab 1 in the positive direction is smaller than the allowable stresses FSt and FSc of the deck slab 1 in the positive direction, and that the maximum deflection δmax occurring in the deck slab 1 is smaller than the allowable deflection of the deck slab 1. Therefore, the calculation methods for the maximum positive bending moment Mfmax occurring in the deck slab 1, the maximum deflection δmax occurring in the deck slab 1, the allowable stresses FSt and FSc of the deck slab 1, and the allowable deflection δa of the deck slab 1 will be described.

[0118] First, we will explain how to calculate the maximum positive bending moment Mfmax that occurs in deck slab 1 and the allowable stresses FSt and FSc of deck slab 1. The bending moment Mfd generated in the deck slab 1 due to the application of the live load Wl, finishing load Wc, and fixed load Wd can be calculated from the following equation, assuming that the support distance of the deck plate 2 is L.

[0119] Mfd={(Wd+Wc+Wl)×(L^2)} / 8…(6)

[0120] In addition, the bending moment Mfp generated in the deck slab 1 due to the application of the effective wheel load PA per unit width can be calculated from the following relational expression, where L is the distance between supports of the deck plate 2.

[0121] Mfp = (PA × L) / 4…(7)

[0122] Since the deck slab 1 is subjected to the superimposed loads of live load Wl, finishing load Wc, fixed load Wd, and effective wheel load PA per unit width, the maximum bending moment Mfmax in the positive direction acting on the deck slab 1 can be calculated using the following equation. Mfmax = Mfd + Mfp…(8)

[0123] There are two types of allowable positive stresses for the deck slab 1: the allowable positive stress FSt determined by the tension members of the deck slab 1, and the allowable positive stress FSc determined by the compression members of the deck slab 1. The allowable positive stress FSt determined by the tension member of the deck slab 1 must satisfy the following inequality, assuming that the section modulus of the steel side of the deck slab 1 is cZt.

[0124] FSt≧Mfmax / cZt…(9)

[0125] The allowable positive stress FSc determined by the compression members of deck slab 1 must satisfy the following inequality, assuming that the concrete 3-side section modulus of deck slab 1 is cZc.

[0126] FSc≧Mfmax / cZc…(10)

[0127] In addition, the allowable positive stress FSt determined by the tension member of the deck slab 1 can be calculated from the following equation, assuming that the design standard strength (yield point) of the steel is Ft and the safety factor is 1.5.

[0128] FSt = Ft / 1.5…(11)

[0129] In addition, the allowable positive stress FSc determined by the compression members of the deck slab 1 can be calculated from the following equation, assuming that the design standard strength of the concrete 3 is Fc and the safety factor is 3.

[0130] FSc = Fc / 3…(12)

[0131] From the above equations (9) and (11), if the following inequality is satisfied, the value of the maximum bending moment Mfmax in the positive direction generated in the deck slab 1 will be less than the value of the allowable positive stress FSt determined by the tension member of the deck slab 1, and therefore it can be said that the design conditions are met.

[0132] Mfmax / cZt≦Ft / 1.5…(13)

[0133] From the above equations (10) and (12), if the following inequality is satisfied, the value of the maximum bending moment Mfmax in the positive direction generated in deck slab 1 will be less than the value of the allowable positive stress FSc determined by the compression members of deck slab 1, and therefore it can be said that the design conditions are met.

[0134] Mfmax / cZc≦Fc / 3…(14)

[0135] Here, if the support distance L of the deck plate 2 is 2250 mm, then the bending moment Mfd generated in the deck slab 1 is 2370 N·m / m according to the above formula (6), the bending moment Mfp generated in the deck slab 1 is 7140 N·m / m according to the above formula (7), and the maximum bending moment Mfmax in the positive direction generated in the deck slab 1 is 9510 N·m / m according to the above formula (8).

[0136] In addition, the steel section modulus cZt of deck slab 1 is 120.0 × 10 3 mm 3 / m, and the concrete side section modulus cZc of deck slab 1 is 3210 × 10 3 mm 3 / m, then, from the above formula (9), Mfmax / cZt is 79.3N / mm 2 / m, and from the above formula (10), Mfmax / cZc is 3.0N / mm 2 / m. Therefore, the above formula (13) is 79.3N / mm 2 / m≦156.7N / mm 2 / m, the above (14) is 3.0N / mm 2 / m≦8.0N / mm 2 / m, the value of the maximum bending moment Mfmax in the positive direction generated in deck slab 1 is less than the value of the allowable positive stress FSt determined by the tension members of deck slab 1, and is less than the value of the allowable positive stress FSc determined by the compression members of deck slab 1, so it can be said that the design conditions are met.

[0137] Next, a method for calculating the maximum deflection δmax occurring in the deck slab 1 and the allowable deflection δa of the deck slab 1 will be described. The deflection δd that occurs in the deck slab 1 due to the application of the live load Wl, finishing load Wc, and fixed load Wd can be calculated from the following equation, where L is the distance between the supports of the deck plate 2, E is the Young's modulus of the steel, I is the second moment of area of ​​the deck slab 1, and n is the Young's modulus ratio between the steel and concrete 3. The Young's modulus E of the steel is 205 GPa, and the second moment of area I of deck slab 1 is 17900 × 104 ×mm 4 / m, and the Young's modulus ratio n is 15. Furthermore, steel materials include not only deck plates but also reinforcing bars, welded wire mesh, reinforcing bars, etc.

[0138] δd={5×(Wd+Wc+Wl)×(L^4)×n} / (384×E×I)…(15)

[0139] The deflection δp that occurs in the deck slab 1 due to the effective wheel load PA per unit width can be calculated from the following equation, where L is the distance between supports of the deck plate 2, E is the Young's modulus of the steel, and I is the second moment of area of ​​the deck slab 1.

[0140] δp={PA×(L^3)×n} / (48×E×I)…(16)

[0141] Since the deck slab 1 is subjected to the superimposed loads Wl, Wc, Wd, and PA, the effective wheel load per unit width, the maximum deflection δmax of the deck slab 1 can be calculated using the following equation.

[0142] δmax = δd + δp…(17)

[0143] The allowable deflection δa of deck slab 1, assuming the deformation increase coefficient K is 1.5, can be calculated from the following equation based on Article 82, Paragraph 1, Item 4 of the Building Standards Act Enforcement Order and Ministry of Construction Notification No. 1459 of 2000.

[0144] δa=L / (250×K)…(18)

[0145] From the above equations (17) and (18), if the following inequality is satisfied, the value of the maximum deflection δmax occurring in the deck slab 1 will be smaller than the value of the allowable deflection δa of the deck slab 1, and therefore it can be said that the design conditions are met.

[0146] δmax≦δa…(19)

[0147] From the above formula (15), the deflection δd occurring in the deck slab 1 is 0.512 mm, from the above formula (16), the deflection δp occurring in the deck slab 1 is 1.731 mm, and from the above formula (17), the maximum deflection δmax occurring in the deck slab 1 is 2.243 mm. Furthermore, from the above formula (18), the allowable deflection δa of the deck slab 1 is 6 mm. Therefore, since the above formula (19) is 2.243 mm≦6 mm, it can be said that the maximum deflection δmax occurring in the deck slab 1 satisfies the design conditions.

[0148] Next, the maximum bending moment Mnmax in the negative direction occurring in the deck slab 1 is calculated.

[0149] As shown in Figure 11B, the deck slab 1 with a fixed-support beam structure is subjected to uniformly distributed loads, namely, the live load Wl and the finishing load Wc, and concentrated loads, namely, the effective wheel load PA per unit width. When these loads act on the deck slab 1, not only a positive bending moment Mfn but also a negative bending moment Mn is generated in the deck slab 1. Of the negative bending moments Mn acting on the deck slab 1, the maximum negative bending moment Mnmax occurs at the end of the deck slab 1. When designing deck slab 1, it is necessary to confirm that the maximum negative bending moment Mnmax occurring in deck slab 1 is smaller than the negative allowable stress FScn of deck slab 1. Note that in the case of a deck slab 1 with a fixed-support beam structure at both ends, the maximum positive bending moment Mfnmax is smaller than the maximum positive bending moment Mfmax in the case of a deck slab 1 with a pin-support beam structure at both ends, so calculation of the maximum positive bending moment Mfnmax is omitted. Also, in the case of a deck slab 1 with a fixed-support beam structure at both ends, the amount of deflection is smaller than in the case of a deck slab 1 with a pin-support beam structure at both ends, so calculation of deflection δ is omitted. Therefore, we will explain how to calculate the maximum negative bending moment Mnmax that occurs in the deck slab 1 and the negative allowable stress FScn of the deck slab 1.

[0150] The bending moment Mnd generated in the deck slab 1 due to the application of the live load Wl and the finishing load Wc can be calculated from the following equation, where L is the distance between the supports of the deck plate 2.

[0151] Mnd={(Wc+Wl)×(L^2)} / 12…(20)

[0152] In addition, the bending moment Mnp generated in the deck slab 1 due to the application of the effective wheel load PA per unit width can be calculated from the following relational expression, where L is the distance between supports of the deck plate 2.

[0153] Mnp = (PA × L) / 8…(21)

[0154] Since the deck slab 1 is subjected to the superimposed loads Wl, Wc, and effective wheel load PA per unit width, the maximum negative bending moment Mnmax acting on the deck slab 1 can be calculated using the following equation. Mnmax = Mnd + Mnp…(22)

[0155] There are two types of negative allowable stresses for the deck slab 1: the negative allowable stress FStn determined by the tension members of the deck slab 1, and the negative allowable stress FScn determined by the compression members of the deck slab 1. The allowable negative stress FStn determined by the tension member of the deck slab 1 must satisfy the following inequality, assuming that the section modulus of the steel side of the deck slab 1 is cZt.

[0156] FStn≧Mnmax / cZt…(23)

[0157] The allowable negative stress FScn determined by the compression members of deck slab 1 must satisfy the following inequality, assuming that the concrete side section modulus of deck slab 1 is eZt.

[0158] FScn≧Mnmax / eZt…(24)

[0159] In addition, the allowable negative stress FStn determined by the tensile material of the deck slab 1 can be calculated from the following equation, where Ft is the design standard strength (yield point) of the steel material and α is the reduction coefficient taking into account the reduction due to buckling (in this example, α is set to 1.5).

[0160] FStn=Ft / α…(25)

[0161] In addition, the allowable negative stress FScn determined by the compression members of the deck slab 1 can be calculated from the following relational expression, assuming that the design standard strength of the concrete 3 is Fc.

[0162] FScn=0.62×{(Fc)^(1 / 2)}…(26)

[0163] From the above equations (23) and (25), if the following inequality is satisfied, the value of the maximum negative bending moment Mnmax occurring in the deck slab 1 will be less than the value of the negative allowable stress FStn determined by the tensile member of the deck slab 1, and therefore it can be said that the design conditions are met.

[0164] Mnmax / cZt≦Ft / 1.5…(27)

[0165] From the above equations (24) and (26), if the following inequality is satisfied, the value of the maximum negative bending moment Mnmax generated in deck slab 1 will be less than the value of the negative allowable stress FScn determined by the compression members of deck slab 1, and therefore it can be said that the design conditions are met.

[0166] Mnmax / eZt≦0.62×{(Fc)^(1 / 2)}…(28)

[0167] Here, if the support distance L of the deck plate 2 is 2250 mm, then the bending moment Mnd generated in the deck slab 1 is 350 N·m / m according to the above formula (20), the bending moment Mnp generated in the deck slab 1 is 3570 N·m / m according to the above formula (21), and the maximum bending moment Mnmax in the negative direction generated in the deck slab 1 is 3920 N·m / m according to the above formula (22).

[0168] In addition, the steel section modulus cZt of deck slab 1 is 120.0 × 10 3 mm 3 / m, and the concrete side section modulus of deck slab 1 is eZt = 3860 × 10 3 mm 3 / m, then, from the above formula (23), Mnmax / cZt is 32.7N / mm 2 / m, and from the above formula (24), Mnmax / eZt is 1.02N / mm 2 / m. Therefore, the above formula (27) is 32.7N / mm 2 / m≦156.7N / mm 2 / m, the above (28) is 1.02N / mm 2 / m≦3.04N / mm 2 / m, the value of the maximum negative bending moment Mnmax generated in deck slab 1 is less than the value of the negative allowable stress FStn determined by the tension members of deck slab 1, and is less than the value of the negative allowable stress FScn determined by the compression members of deck slab 1, so it can be said that the design conditions are met.

[0169] Next, the maximum shear stress τmax occurring in the deck slab 1 is calculated.

[0170] As shown in Figure 11C, the deck slab 1 with a pin-supported beam structure is subjected to uniformly distributed loads, namely, the live load Wl and the finishing load Wc, and concentrated loads, namely, the effective wheel load PA per unit width. These loads act on the deck slab 1, causing a shear force Q to act on the deck slab 1. Of the shear force Q acting on the deck slab 1, the maximum shear force Qmax acts at the end of the deck slab 1. When designing the deck slab 1, it is necessary to confirm that the maximum shear stress τmax generated by the maximum shear force Qmax acting on the deck slab 1 is smaller than the allowable shear stress τa of the deck slab 1. Therefore, a method for calculating the maximum shear force Qmax acting on the deck slab 1, the maximum shear stress τmax generated by the maximum shear force Qmax acting on the deck slab 1, and the allowable shear stress τa of the deck slab 1 will be described.

[0171] The maximum shear force Qmax acting on the deck slab 1 due to the application of the live load Wl and the finishing load Wc can be calculated from the following equation, assuming that the support distance of the deck plate 2 is L.

[0172] Qmax = PA + {(Wc + Wl) × L} / 2…(29)

[0173] The maximum shear stress τmax generated by the maximum shear force Qmax acting on the deck slab 1 can be calculated from the following equation, where S is the moment of area of ​​the deck slab 1 and I is the moment of area of ​​the deck slab 1. The primary moment of area S of deck slab 1 is 1560 x 10 3 ×mm 3 / m, and the moment of inertia I of deck slab 1 is 17900×10 4 ×mm 4 / m.

[0174] τmax=Qmax×S / I…(30)

[0175] From the above equation (30), if the following inequality is satisfied, the value of the maximum shear stress τmax generated by the maximum shear force Qmax acting on the deck slab 1 will be less than the value of the allowable shear stress τa of the deck slab 1, and therefore it can be said that the design conditions are met. The allowable shear stress τa of the deck slab 1 is set to 185.0 N / mm / m.

[0176] τmax≦τa…(31)

[0177] Here, if the support distance L of the deck plate 2 is 2250 mm, then from the above formula (29), the maximum shear force Qmax acting on the deck slab 1 is 13610 N·m / m, and from the above formula (30), the maximum shear stress τmax caused by the maximum shear force Qmax acting on the deck slab 1 is 118.6 N / mm / m. Therefore, since the above (31) is 118.6 N / mm / m ≦ 185.0 N / mm / m, it can be said that the maximum shear force Qmax acting on the deck slab 1 and the maximum shear stress τmax generated by the maximum shear force Qmax acting on the deck slab 1 meet the design conditions.

[0178] <<An example of a deck slab structural calculation using the calculation unit (part 2)>> Next, the load acting when the forklift 20 travels in a direction perpendicular to the extension direction of the deck slab 1 will be calculated. FIG. 12 is a plan view showing the positional relationship between the deck slab and the forklift when the extending direction of the deck slab and the traveling direction of the forklift are perpendicular to each other. FIG. 13A is a diagram showing the load acting on the structure shown in FIG. 12 and the positive bending moment that is generated. FIG. 13B is a diagram showing the load acting in FIG. 12 and the positive and negative bending moments that are generated. FIG. 13C is a diagram illustrating the load and shear forces acting in FIG. Below, we will describe an example of a method for calculating the load data pair by the calculation unit 113, the maximum positive bending moment occurring on the deck slab, the maximum negative bending moment occurring on the deck slab, the maximum deflection occurring on the deck slab, and the maximum shear force acting on the deck slab, which is different from the example (part 1) of structural calculation of a deck slab by the calculation unit 113.

[0179] In this example, as in the example (part 1) of the structural calculation of the deck slab by the calculation unit 113, the height TS of the deck plate 2 is 75 mm, the plate thickness TD of the deck plate 2 is 1.2 mm, the thickness TC of the concrete 3 is 80 mm, and the type of concrete 3 is concrete density 23.0 kN / m 3 The design strength Fc of ordinary concrete and concrete 3 is 24N / mm 2 The material of deck plate 2 is ordinary steel, the surface treatment of deck plate 2 (galvanization, etc.) is Z12, and the design standard strength (yield point) Ft of the steel material is 235N / mm 2 The specifications of the rebar 4 are that the diameter of the rebar is φ6 and the spacing between the rebars is 100 x 100 mm, the support distance L of the deck plate 2 is 2250 mm, and the live load Wl and the finishing load Wc acting on the deck slab 1 (however, the live load Wl and the load acting by the forklift 20 are not assumed to act simultaneously, and Wc is 0 N / m 2 (assumed to be 820N / m 2 , the dead load Wd acting on deck slab 1 is 2930N / m 2 Design is carried out as follows. In addition, steel materials include not only deck plates but also welded wire mesh, reinforcing bars, reinforcing bars, etc.

[0180] In Figure 12, the forklift 20 is traveling in a direction (Y-axis direction) perpendicular to the extension direction of the deck slab, and in the X-axis direction, it is at the midpoint L / 2 of the support distance L of the deck slab 1, and in the Y-axis direction, the forklift 20 is stationary in the deck slab effective range 25, which is the range where the load from the front wheels 23 of the forklift 20 acts, and the rear wheels 24 of the forklift 20 are outside the deck slab effective range 25. Considering the ratio LR of the load acting on the deck slab 1 by the front wheels 23 of the forklift 20 and the value of the impact coefficient IC, when the forklift 20 travels in the extension direction of the deck slab 1, the load acting on the deck slab 1 by the forklift 20 will be maximum when the midpoint L / 2 of the support distance L of the deck slab 1 overlaps with the central axis of the forklift 20. Specifically, this is the case when LB2, which represents the distance between the center of the beam supporting the deck slab 1 in the X-axis direction and the wheels 23, 24 of the forklift 20, satisfies the following relationship between the support distance L of the deck slab 1 and LB1, which is the size of the forklift 20 in the X-axis direction.

[0181] LB2=(L-LB1) / 2…(32)

[0182] In Figure 12, the deck slab effective range 25, which is the range over which the load from the front wheels 23 of the forklift 20 acts, has a length in the X-axis direction of the support distance L of the deck slab 1, and has a length in the Y-axis direction of the deck slab effective width VW2 in an example (part 2) of the deck slab structural calculation by the calculation unit 113. When the forklift 20 travels in a direction (Y-axis direction) perpendicular to the extension direction of the deck slab 1 and the central axis of the forklift 20 coincides with the midpoint L / 2 of the support distance L of the deck slab 1, the load acting on the deck slab effective range 25 by the front wheels 23 of the forklift 20 is the maximum load PFL acting on the deck slab 1 by the forklift 20. PFL is the same as Example (Part 1) of the structural calculation of the deck slab by the calculation unit 113.

[0183] Here, the structural calculation can be easily performed by using the effective wheel load PB per unit width, which is obtained by dividing the maximum load PFL acting on the deck slab 1 by the forklift 20 by the deck slab effective width VW2 in an example (part 2) of structural calculation of the deck slab by the calculation unit 113, so we will calculate the effective wheel load PB per unit width. The effective wheel load per unit width PB can be calculated using the following formula:

[0184] PB=PFL / VW2…(33)

[0185] From the above equation (33), it can be seen that when calculating the effective wheel load PB per unit width, it is necessary to calculate the specific values ​​of the maximum load PFL acting on the deck slab 1 by the forklift 20 and the deck slab effective width VW2 in an example (part 2) of the deck slab structural calculation by the calculation unit 113.

[0186] As shown in FIG. 12, in the example (part 2) of the structural calculation of the deck slab by the calculation unit 113, the deck slab effective width VW2 satisfies the following relational expression in relation to the deck slab effective width VW and the wheelbase WB.

[0187] VW2=(VW+WB) / 2…(34)

[0188] Here, in order to determine the specific value of the deck slab effective width VW2 in an example (part 2) of the deck slab structural calculation by the calculation unit 113, it is necessary to determine the value of the load PFL acting by the front wheel 23 on one side of the forklift 20, and therefore the load PFL is calculated based on the above formulas (1) and (2).

[0189] Since the mass of the forklift 20 is 2950 kg, the load PFL acting from the front wheel 23 on one side of the forklift 20 can be calculated in the same manner as in Example 1 of the structural calculation of the deck slab by the calculation unit 113. It is calculated from the following relational expression. In other words, the load PFL acting from the front wheel 23 on one side of the forklift 20 is calculated to be 15033 N. In addition, the deck slab effective width VW is also calculated to be 1500 mm, similar to the example (part 1) of the structural calculation of the deck slab by the calculation unit 113.

[0190] Therefore, the deck slab effective width VW2 in the example (part 2) of the structural calculation of the deck slab by the calculation unit 113 is calculated to be 1300 mm based on the above formula (34).

[0191] Since the load PFL acting by one front wheel 23 of the forklift 20 and the specific values ​​of the deck slab effective width VW2 in an example (part 2) of the deck slab structural calculation by the calculation unit 113 have been obtained, it can be seen that the effective wheel load PB per unit width is 11,560 N / m based on the above formula (33).

[0192] Next, the maximum bending moment Mfmax in the positive direction and the maximum deflection δmax occurring in the deck slab 1 are calculated.

[0193] As shown in Figure 13A, the deck slab 1, which has a pin-supported beam structure at both ends, is subjected to uniformly distributed loads: live load Wl, finishing load Wc, and fixed load Wd, as well as concentrated loads: effective wheel load PB (two points) per unit width. When these loads act on the deck slab 1, a positive bending moment Mf and deflection δ occur in the deck slab 1. Of the positive bending moments Mf occurring in the deck slab 1, the maximum positive bending moment Mfmax occurs when the above formula (32) holds. When designing the deck slab 1, it is necessary to confirm that the maximum bending moment Mfmax occurring in the deck slab 1 in the positive direction is smaller than the allowable stresses FSt and FSc of the deck slab 1 in the positive direction, and that the maximum deflection δmax occurring in the deck slab 1 is smaller than the allowable deflection of the deck slab 1. Therefore, the calculation methods for the maximum positive bending moment Mfmax occurring in the deck slab 1, the maximum deflection δmax occurring in the deck slab 1, the allowable stresses FSt and FSc of the deck slab 1, and the allowable deflection δa of the deck slab 1 will be described.

[0194] First, we will explain how to calculate the maximum positive bending moment Mfmax that occurs in deck slab 1 and the allowable stresses FSt and FSc of deck slab 1. The bending moment Mfd generated in the deck slab 1 due to the application of the live load Wl, finishing load Wc, and fixed load Wd can be calculated from the following equation, assuming that the support distance of the deck plate 2 is L.

[0195] Mfd={(Wd+Wc+Wl)×(L^2)} / 8…(35)

[0196] In addition, the bending moment Mfp generated in the deck slab 1 due to the application of the effective wheel load PB per unit width can be calculated from the following relational expression, where L is the distance between supports of the deck plate 2.

[0197] Mfp=PB×[1―{(LB1) / (2×L)}]×{(L / 2)―(LB1 / 4)}…(36)

[0198] Since the deck slab 1 is subjected to the superimposed loads of live load Wl, finishing load Wc, fixed load Wd, and effective wheel load PB per unit width, the maximum bending moment Mfmax in the positive direction acting on the deck slab 1 can be calculated using the following equation. Mfmax=Mfd+Mfp…(37)

[0199] There are two types of allowable positive stresses for the deck slab 1: the allowable positive stress FSt determined by the tension members of the deck slab 1, and the allowable positive stress FSc determined by the compression members of the deck slab 1. The allowable positive stress FSt determined by the tension member of the deck slab 1 must satisfy the following inequality, assuming that the section modulus of the steel side of the deck slab 1 is cZt.

[0200] FSt≧Mfmax / cZt…(38)

[0201] The allowable positive stress FSc determined by the compression members of deck slab 1 must satisfy the following inequality, assuming that the concrete 3-side section modulus of deck slab 1 is cZc.

[0202] FSc≧Mfmax / cZc…(39)

[0203] In addition, the allowable positive stress FSt determined by the tension member of the deck slab 1 can be calculated from the following equation, assuming that the design standard strength (yield point) of the steel is Ft and the safety factor is 1.5.

[0204] FSt = Ft / 1.5…(40)

[0205] In addition, the allowable positive stress FSc determined by the compression members of the deck slab 1 can be calculated from the following equation, assuming that the design standard strength of the concrete 3 is Fc and the safety factor is 3.

[0206] FSc = Fc / 3…(41)

[0207] From the above equations (38) and (40), if the following inequality is satisfied, the value of the maximum bending moment Mfmax in the positive direction generated in the deck slab 1 will be less than the value of the allowable positive stress FSt determined by the tension member of the deck slab 1, and therefore it can be said that the design conditions are met.

[0208] Mfmax / cZt≦Ft / 1.5…(42)

[0209] From the above equations (39) and (41), if the following inequality is satisfied, the value of the maximum bending moment Mfmax in the positive direction generated in deck slab 1 will be less than the value of the allowable positive stress FSc determined by the compression members of deck slab 1, and therefore it can be said that the design conditions are met.

[0210] Mfmax / cZc≦Fc / 3…(43)

[0211] Here, if the support distance L of the deck plate 2 is 2250 mm, then the bending moment Mfd generated in the deck slab 1 is 2370 N·m / m according to the above formula (35), the bending moment Mfp generated in the deck slab 1 is 8460 N·m / m according to the above formula (36), and the maximum bending moment Mfmax in the positive direction generated in the deck slab 1 is 10830 N·m / m according to the above formula (37).

[0212] In addition, the steel section modulus cZt of deck slab 1 is 120.0 × 10 3 mm 3 / m, and the concrete side section modulus cZc of deck slab 1 is 3210 × 10 3 mm 3 / m, then, from the above formula (38), Mfmax / cZt is 90.3N / mm 2 / m, and from the above formula (39), Mfmax / cZc is 3.4N / mm 2 / m. Therefore, the above formula (42) is 90.3N / mm 2 / m≦156.7N / mm 2 / m, the above (43) is 3.4N / mm 2 / m≦8.0N / mm 2 / m, the value of the maximum bending moment Mfmax in the positive direction generated in deck slab 1 is less than the value of the allowable positive stress FSt determined by the tension members of deck slab 1, and is less than the value of the allowable positive stress FSc determined by the compression members of deck slab 1, so it can be said that the design conditions are met.

[0213] Next, a method for calculating the maximum deflection δmax occurring in the deck slab 1 and the allowable deflection δa of the deck slab 1 will be described. The deflection δd that occurs in the deck slab 1 due to the application of the live load Wl, finishing load Wc, and fixed load Wd can be calculated from the following equation, where L is the distance between the supports of the deck plate 2, E is the Young's modulus of the steel, I is the second moment of area of ​​the deck slab 1, and n is the Young's modulus ratio between the steel and concrete 3. The Young's modulus E of the steel is 205 GPa, and the second moment of area I of deck slab 1 is 17900 × 10 4 ×mm 4 / m, and the Young's modulus ratio n is 15. Steel materials include not only deck plates but also welded wire mesh, reinforcing bars, reinforcing bars, etc.

[0214] δd={5×(Wd+Wc+Wl)×(L^4)×n} / (384×E×I)…(44)

[0215] The deflection δp that occurs in the deck slab 1 due to the effective wheel load PB per unit width can be calculated from the following equation, where L is the distance between supports of the deck plate 2, E is the Young's modulus of the steel, and I is the second moment of area of ​​the deck slab 1.

[0216] δp=[PB×{3×(L^2)−4×(LB2^2)}×n] / (24×E×I)…(45)

[0217] Since the deck slab 1 is subjected to the superimposed loads Wl, Wc, Wd, and PB, the effective wheel load per unit width, the maximum deflection δmax of the deck slab 1 can be calculated using the following equation.

[0218] δmax = δd + δp…(46)

[0219] The allowable deflection δa of deck slab 1, assuming the deformation increase coefficient K is 1.5, can be calculated from the following equation based on Article 82, Paragraph 1, Item 4 of the Building Standards Act Enforcement Order and Ministry of Construction Notification No. 1459 of 2000.

[0220] δa=L / (250×K)…(47)

[0221] From the above equations (46) and (47), if the following inequality is satisfied, the value of the maximum deflection δmax occurring in the deck slab 1 will be smaller than the value of the allowable deflection δa of the deck slab 1, and therefore it can be said that the design conditions are met.

[0222] δmax≦δa…(48)

[0223] From the above formula (44), the deflection δd occurring in the deck slab 1 is 0.512 mm, from the above formula (45), the deflection δp occurring in the deck slab 1 is 2.615 mm, and from the above formula (46), the maximum deflection δmax occurring in the deck slab 1 is 3.127 mm. Furthermore, from the above formula (47), the allowable deflection δa of the deck slab 1 is 6 mm. Therefore, since the above formula (48) is 3.127 mm≦6 mm, it can be said that the maximum deflection δmax occurring in the deck slab 1 satisfies the design conditions.

[0224] Next, the maximum bending moment Mnmax in the negative direction occurring in the deck slab 1 is calculated.

[0225] As shown in Figure 13B, the deck slab 1 with a fixed support beam structure is subjected to uniformly distributed loads, such as live load Wl, finishing load Wc, and concentrated loads, such as effective wheel load PB (two points) per unit width. When these loads act on the deck slab 1, not only a positive bending moment Mfn but also a negative bending moment Mn is generated in the deck slab 1. Of the negative bending moments Mn acting on the deck slab 1, the maximum negative bending moment Mnmax occurs at the end of the deck slab 1. When designing deck slab 1, it is necessary to confirm that the maximum negative bending moment Mnmax occurring in deck slab 1 is smaller than the negative allowable stress FScn of deck slab 1. Note that in the case of a deck slab 1 with a fixed-support beam structure at both ends, the maximum positive bending moment Mfnmax is smaller than the maximum positive bending moment Mfmax in the case of a deck slab 1 with a pin-support beam structure at both ends, so calculation of the maximum positive bending moment Mfnmax is omitted. Also, in the case of a deck slab 1 with a fixed-support beam structure at both ends, the amount of deflection is smaller than in the case of a deck slab 1 with a pin-support beam structure at both ends, so calculation of deflection δ is omitted. Therefore, we will explain how to calculate the maximum negative bending moment Mnmax that occurs in the deck slab 1 and the negative allowable stress FScn of the deck slab 1.

[0226] The bending moment Mnd generated in the deck slab 1 due to the application of the live load Wl and the finishing load Wc can be calculated from the following equation, where L is the distance between the supports of the deck plate 2.

[0227] Mnd={(Wc+Wl)×(L^2)} / 12…(49)

[0228] In addition, the bending moment Mnp generated in the deck slab 1 due to the application of the effective wheel load PB per unit width can be calculated from the following relational expression, where L is the distance between supports of the deck plate 2.

[0229] Mnp={PB×(L^2)}×[{LB2×(LB1+LB2)^2}+{(LB2^2)×(LB1+LB2)}]…(50)

[0230] Since the deck slab 1 is subjected to the superimposed loads Wl, Wc, and the effective wheel load PB per unit width, the maximum negative bending moment Mnmax acting on the deck slab 1 can be calculated using the following equation. Mnmax = Mnd + Mnp…(51)

[0231] There are two types of negative allowable stresses for the deck slab 1: the negative allowable stress FStn determined by the tension members of the deck slab 1, and the negative allowable stress FScn determined by the compression members of the deck slab 1. The allowable negative stress FStn determined by the tension member of the deck slab 1 must satisfy the following inequality, assuming that the section modulus of the steel side of the deck slab 1 is cZt.

[0232] FStn≧Mnmax / cZt…(52)

[0233] The allowable negative stress FScn determined by the compression members of deck slab 1 must satisfy the following inequality, assuming that the section modulus at the top of deck slab 1 is eZt.

[0234] FScn≧Mnmax / eZt…(53)

[0235] In addition, the allowable negative stress FStn determined by the tensile material of the deck slab 1 can be calculated from the following equation, where Ft is the design standard strength (yield point) of the steel material and α is the reduction coefficient taking into account the reduction due to buckling (in this example, α is set to 1.5).

[0236] FStn=Ft / α…(54)

[0237] In addition, the allowable negative stress FScn determined by the compression members of the deck slab 1 can be calculated from the following relational expression, assuming that the design standard strength of the concrete 3 is Fc.

[0238] FScn=0.62×{(Fc)^(1 / 2)}…(55)

[0239] From the above equations (52) and (54), if the following inequality is satisfied, the value of the maximum negative bending moment Mnmax occurring in the deck slab 1 will be less than the value of the negative allowable stress FStn determined by the tensile member of the deck slab 1, and therefore it can be said that the design conditions are met.

[0240] Mnmax / cZt≦Ft / 1.5…(56)

[0241] From the above equations (53) and (55), if the following inequality is satisfied, the value of the maximum negative bending moment Mnmax occurring in deck slab 1 will be less than the value of the negative allowable stress FScn determined by the compression members of deck slab 1, and therefore it can be said that the design conditions are met.

[0242] Mnmax / eZt≦0.62×{(Fc)^(1 / 2)}…(57)

[0243] Here, if the support distance L of the deck plate 2 is 2250 mm, then the bending moment Mnd generated in the deck slab 1 is 350 N·m / m according to the above formula (49), the bending moment Mnp generated in the deck slab 1 is 5530 N·m / m according to the above formula (50), and the maximum bending moment Mnmax in the negative direction generated in the deck slab 1 is 5880 N·m / m according to the above formula (51).

[0244] In addition, the steel section modulus cZt of deck slab 1 is 120.0 × 10 3 mm 3 / m, and the section modulus of the upper end of deck slab 1 is eZt = 3860 × 10 3 mm3 / m, then, from the above formula (52), Mnmax / cZt is 49.0N / mm 2 / m, and from the above formula (53), Mnmax / eZt is 1.52N / mm 2 / m. Therefore, the above formula (56) is 49.0N / mm 2 / m≦156.7N / mm 2 / m, the above (57) is 1.52N / mm 2 / m≦3.04N / mm 2 / m, the value of the maximum negative bending moment Mnmax generated in deck slab 1 is less than the value of the negative allowable stress FStn determined by the tension members of deck slab 1, and is less than the value of the negative allowable stress FScn determined by the compression members of deck slab 1, so it can be said that the design conditions are met.

[0245] Next, the maximum shear stress τmax occurring in the deck slab 1 is calculated.

[0246] As shown in Figure 13C, the deck slab 1, which has a pin-supported beam structure at both ends, is subjected to uniformly distributed loads, namely, live load Wl and finishing load Wc, and concentrated loads, namely, effective wheel load PB (two points) per unit width. These loads act on the deck slab 1, causing a shear force Q to act on the deck slab 1. In addition, in an example (part 2) of the structural calculation of the deck slab by the calculation unit 113, the maximum shear force Qmax of the shear force Q on the deck slab 1 acts at the end of the deck slab 1 when at least one point of the effective wheel load PB per unit width (two points) acts on the end of the deck slab 1. When designing the deck slab 1, it is necessary to confirm that the maximum shear stress τmax generated by the maximum shear force Qmax acting on the deck slab 1 is smaller than the allowable shear stress τa of the deck slab 1. Therefore, a method for calculating the maximum shear force Qmax acting on the deck slab 1, the maximum shear stress τmax generated by the maximum shear force Qmax acting on the deck slab 1, and the allowable shear stress τa of the deck slab 1 will be described.

[0247] The maximum shear force Qmax acting on the deck slab 1 due to the application of the live load Wl and the finishing load Wc can be calculated from the following equation, assuming that the support distance of the deck plate 2 is L. LB3 is a value obtained by subtracting LB1, which is the size of the forklift 20 in the X-axis direction, from the support distance L of the deck slab 1.

[0248] Qmax=PB×{2―(LB1 / L)}+{(Wc+Wl)×L} / 2…(58)

[0249] The maximum shear stress τmax generated by the maximum shear force Qmax acting on the deck slab 1 can be calculated from the following equation, where S is the moment of area of ​​the deck slab 1 and I is the moment of area of ​​the deck slab 1. The primary moment of area S of deck slab 1 is 1560 x 10 3 ×mm 3 / m, and the moment of inertia I of deck slab 1 is 17900×10 4 ×mm 4 / m.

[0250] τmax=Qmax×S / I…(59)

[0251] From the above equation (59), if the following inequality is satisfied, the value of the maximum shear stress τmax generated by the maximum shear force Qmax acting on the deck slab 1 will be less than the value of the allowable shear stress τa of the deck slab 1, and therefore it can be said that the design conditions are met. The allowable shear stress τa of the deck slab 1 is set to 185.0 N / mm / m.

[0252] τmax≦τa…(60)

[0253] Here, if the support distance L of the deck plate 2 is 2250 mm, then from the above formula (58), the maximum shear force Qmax acting on the deck slab 1 is 19570 N·m / m, and from the above formula (59), the maximum shear stress τmax caused by the maximum shear force Qmax acting on the deck slab 1 is 170.6 N / mm / m. Therefore, since the above (60) is 170.6 N / mm / m ≦ 185.0 N / mm / m, it can be said that the maximum shear force Qmax acting on the deck slab 1 and the maximum shear stress τmax generated by the maximum shear force Qmax acting on the deck slab 1 meet the design conditions.

[0254] <An example of deck slab structural calculation using the calculation unit (part 3)> Next, the load acting on the deck slab 1 when a vehicle 30 runs on it will be calculated. FIG. 14 is a plan view showing a parking lot constructed using deck slabs. FIG. 15 is a plan view showing an example of the positions of vehicles arranged in a parking lot. Below, we will describe an example of a method for calculating the load data pair by the calculation unit 113, the maximum positive bending moment generated in the deck slab, and the maximum shear force acting on the deck slab, which is different from an example of a structural calculation of a deck slab by the calculation unit 113 (part 1) and an example of a structural calculation of a deck slab by the calculation unit 113 (part 2).

[0255] Figure 14 shows a parking lot on which a deck slab 1 having a support distance L and a slab width XW is laid. This parking lot consists of two areas: a driving area Z1 and a parking area Z2. FIG. 15 shows three vehicles 30 having four tires TY, a vehicle width CW and a wheelbase WB2, with an inter-vehicle distance ID1 and an adjacent-vehicle distance ID2 maintained. In this first modification, the load acting on the deck slab 1 by the vehicle 30 traveling in the travel area Z1 and the parking area Z2 is calculated.

[0256] First, various conditions for calculating the load acting on the deck slab 1 by the vehicles 30 traveling in the traveling zone Z1 and the vehicles 30 parked in the parking zone Z2 will be described.

[0257] FIG. 16 is a diagram showing the relationship between the concentrated load and the effective width of the deck slab. Figure 16 shows the value of the effective width CPW (unit: m), which is the width of the deck slab 1 that can bear the load in cooperation with the beam in the horizontal direction, and the value of the concentrated load P per point in the vertical direction (unit: kN). It is known that the effective width CPW of the deck slab 1 varies depending on the value of the concentrated load P per point, and in an example (part 3) of a structural calculation of the deck slab by the calculation unit, the value of the effective width CPW is determined based on the table in Figure 16.

[0258] In FIG. 16, when the concentrated load P per point is 30 kN, the effective width CPW is 1.5 m, and when the concentrated load P per point is 10 kN, the effective width CPW is 2.1 m. The effective width CPW is 2.1 m when the point-concentrated load P is 10 kN or less, and is calculated using the following formula when the point-concentrated load P is more than 10 kN.

[0259] CPW=−0.03×(P−10)+2.1…(61)

[0260] Therefore, in the example (part 3) of the structural calculation of the deck slab by the calculation unit, when the concentrated load P per point is a value exceeding 10 kN, the value of the effective width CPW is determined using the above formula (61). In one example (part 3) of structural calculation of deck slab by the calculation unit, the concentrated load (wheel pressure) PE1 per tire TY in the driving area Z1 of vehicle 30 is designed to be 9000 N, and the concentrated load (wheel pressure) PE2 per tire TY in the parking area Z2 of vehicle 30 is designed to be 8500 N, so in either case the effective width CPW is designed to be 2.1 m.

[0261] The main conditions other than the effective width CPW are as follows: In an example (part 3) of the structural calculation of the deck slab by the calculation unit, the height TS of the deck plate 2 is 75 mm, the thickness TD of the deck plate 2 is 1.6 mm, the thickness TC of the concrete 3 is 80 mm, and the type of concrete 3 is concrete density 23.0 kN / m 3 The design strength Fc of ordinary concrete and concrete 3 is 21N / mm 2 The material of deck plate 2 is ordinary steel, the surface treatment of deck plate 2 (galvanization, etc.) is Z12, and the design standard strength (yield point) Ft of the steel material is 235N / mm 2 , the steel section modulus cZt of deck slab 1 is 156.0×10 3 mm 3 / m, and the lower flange section modulus Zte of deck slab 1 is 52.7×10 3 mm 3 , the primary moment of area S of deck slab 1 is 1900×10 3 ×mm 3 / m, and the moment of inertia I of deck slab 1 is 21800×10 4 ×mm 4 / m, the allowable shear stress τa of deck slab 1 is 231N / mm / m, the specifications of rebar 4 are that the diameter of the rebar is φ6 and the installation interval of the rebar is 100 x 100mm, the support distance L of deck plate 2 is 3300mm, and the fixed load WDL of deck slab 1 is 2910N / m 2 Design is carried out as follows. The allowable stress FSZ1 of the deck slab 1 in the running area Z1 of the vehicle 30 is 235 N / mm 2 157N / mm with a safety factor of 1.5 2 The allowable stress FSZ2 of the deck slab 1 in the parking area Z2 of the vehicle 30 is 185 N / mm 2 Design is carried out as follows. The vehicle 30 is designed with a width CW of 1.5 m, a wheelbase WB2 of 3.6 m, an inter-vehicle distance ID1 of 1.8 m, and an adjacent inter-vehicle distance ID2 of 1.2 m.

[0262] Prior to calculating the load acting on the deck slab 1 by the vehicle 30, the moment MDL generated by the dead load WDL of the deck slab 1 is calculated. The fixed load WDL of the deck slab 1 acts as a uniformly distributed load over the entire deck slab 1, which has a two-end pin-supported beam structure with a support distance L between each beam. Therefore, the moment MDL generated by the fixed load WDL of the deck slab 1 can be calculated using the following equation.

[0263] MDL={9×WDL×(L^2) / 128}…(62)

[0264] From the above equation (62), the moment MDL generated by the dead load WDL on deck slab 1 is 2230 N·m.

[0265] Next, the load acting on the deck slab 1 due to the vehicle 30 parked in the parking area Z2 is calculated. FIG. 17 is a diagram showing an example of the position of a vehicle when the vehicle is placed in a parking area. FIG. 18 is a diagram showing an example of the load acting in FIG.

[0266] FIG. 17 shows two vehicles 30 each having a vehicle width CW and maintaining an adjacent distance ID2. When calculating the load acting on the deck slab 1 due to vehicles 30 parked in the parking area Z2, the calculation is performed based on the positional relationship of two vehicles 30 shown in Figure 17, out of the vehicles 30 shown in Figure 15.

[0267] First, the concentrated load PE2 per tire TY in the parking area Z2 of the vehicle 30 is converted into an equivalent concentrated load PEA per 1 m width of the deck slab 1. The equivalent concentrated load PEA per 1m width of deck slab 1 can be calculated using the following formula:

[0268] PEA = 2 × PE2 / (CW + ID2) … (63)

[0269] From the above formula (63), the equivalent concentrated load PEA per 1 m width of deck slab 1 is 6300 N.

[0270] 18 shows that two vehicles 30 with a vehicle-to-vehicle distance ID1 act on the deck slab 1 at two points of the equivalent concentrated load PEA per 1 m width of the deck slab 1 calculated using the above formula (63). This shows that, based on the relationship between the support distance L of the deck plate 2, the vehicle-to-vehicle distance ID1, and the wheelbase WB2, the number of tires TY (two) of the vehicles 30 that essentially act in the extension direction of the deck slab 1 is taken into consideration.

[0271] Next, a method for calculating the maximum bending moment Mmax generated in the deck slab 1 due to the equivalent concentrated load PEA per 1 m width of the deck slab 1 will be described. The maximum bending moment Mmax generated in deck slab 1 due to the equivalent concentrated load PEA per 1m width of deck slab 1 can be calculated using the following formula.

[0272] Mmax=PEA×[1―{(ID1) / (2×L)}]×{(L / 2)―(ID1 / 4)}…(64)

[0273] From the above equation (64), the maximum bending moment Mmax generated on deck slab 1 due to the equivalent concentrated load PEA per 1 m width of deck slab 1 is 5500 N·m.

[0274] The maximum stress intensity FZ2 of the deck slab 1 in the parking area Z2 of the vehicle 30 can be calculated from the following relational expression, where Zte is the section modulus on the lower flange side of the deck plate 2 and cZt is the section modulus on the steel side of the deck slab 1.

[0275] FZ2=(MDL / Zte)+(Mmax / cZt)…(65)

[0276] From the above formula (65), the maximum stress FZ2 of the deck slab 1 in the parking area Z2 of the vehicle 30 is 77.6 N / mm 2 This becomes:

[0277] From the above equation (65), if the following inequality is satisfied, the maximum stress FZ2 of the deck slab 1 in the parking area Z2 of the vehicle 30 will be less than or equal to the allowable stress FSZ2 of the deck slab 1 in the parking area Z2 of the vehicle 30, and therefore it can be said that the design conditions are met.

[0278] FZ2≦FSZ2…(66)

[0279] The allowable stress FSZ2 of the deck slab 1 in the parking area Z2 of the vehicle 30 is 185 N / mm 2 Therefore, the above formula (66) is 77.6N / mm 2 ≦185N / mm 2 It can be said that the maximum stress FZ of the deck slab 1 in the parking area Z2 of the vehicle 30 satisfies the design conditions.

[0280] Next, a method for calculating the maximum shear force Qmax acting on the deck slab 1 due to the application of an equivalent concentrated load PEA per 1 m width of the deck slab 1 will be described. The maximum shear force Qmax acting on the deck slab 1 in the parking area Z2 of the vehicle 30 due to the action of the equivalent concentrated load PEA per 1 m width of the deck slab 1 can be calculated from the following relational expression.

[0281] Qmax = PEA × (2 - ID1 / L) ... (67)

[0282] From the above equation (67), when the equivalent concentrated load PEA per 1 m width of the deck slab 1 acts, the maximum shear force Qmax acting on the deck slab 1 in the parking area Z2 of the vehicle 30 is 9160 N.

[0283] The allowable shear force QS2 of the deck slab 1 in the parking area Z2 of the vehicle 30 can be calculated from the following equation, where the allowable shear stress of the deck slab 1 is τa, the first moment of area of ​​the deck slab 1 is S, and the second moment of area of ​​the deck slab 1 is I.

[0284] QS2=τa×I / S…(68)

[0285] From the above formula (68), the allowable shear force QS2 of the deck slab 1 in the parking area Z2 of the vehicle 30 is 26,600 N.

[0286] From the above equations (67) and (68), if the following inequality is satisfied, the value of the maximum shear force Qmax acting on deck slab 1 in parking area Z2 for vehicle 30 will be less than or equal to the value of the allowable shear force QS2 of deck slab 1 in parking area Z2 for vehicle 30, and therefore it can be said that the design conditions are met.

[0287] Qmax≦QS2…(69)

[0288] The above formula (69) becomes 9160N≦26600N, and it can be said that the maximum shear force Qmax acting on the deck slab 1 in the parking area Z2 of the vehicle 30 satisfies the design conditions.

[0289] Next, the load acting on the deck slab 1 by the vehicle 30 traveling in the traveling zone Z1 is calculated. FIG. 19 is a diagram showing an example of the positions of vehicles when the vehicles are placed in a travel area. FIG. 20 is a diagram showing an example of the load acting in FIG.

[0290] FIG. 19 shows two vehicles 30 each having a wheelbase WB2 and maintaining a vehicle-to-vehicle distance ID1. When calculating the load acting on the deck slab 1 by the vehicles 30 traveling in the traveling area Z1, the calculation is performed based on the positional relationship of two of the vehicles 30 shown in Figure 15, as shown in Figure 19.

[0291] First, the concentrated load PE2 per tire TY in the travel area Z1 of the vehicle 30 is converted into an equivalent concentrated load PEB per 1 m width of the deck slab 1. Prior to converting the concentrated load PE2 into the equivalent concentrated load PEB, an equivalent distance ID4 between the vehicles 30 is calculated. The equivalent distance ID4 between the vehicles 30 is calculated from the following relation:

[0292] ID4 = (7 × WB2 / 12) + ID1 ... (70)

[0293] The equivalent concentrated load PEB per 1m width of deck slab 1 can be calculated using the following formula:

[0294] PEB = 2 × PE2 / ID4…(71)

[0295] From the above formula (71), the equivalent concentrated load PEB per 1 m width of deck slab 1 is 4620 N.

[0296] 20 shows that, with the inter-vehicle distance ID1 maintained, two vehicles 30 with wheelbases WB2 are applying an equivalent concentrated load PEB per meter width of the deck slab 1, calculated from the above formula (71), at three points on the deck slab 1. This shows that, based on the relationship between the support distance L of the deck plate 2, the adjacent distance ID2, and the vehicle width CW, the number of tires TY (three) of the vehicles 30 that are essentially acting in the extension direction of the deck slab 1 is taken into consideration.

[0297] Next, a method for calculating the maximum bending moment Mmax generated in the deck slab 1 by the equivalent concentrated load PEB per 1 m width of the deck slab 1 will be described. The maximum bending moment Mmax generated in the deck slab 1 by the equivalent concentrated load PEB per 1 m width of the deck slab 1 can be calculated using the following formula:

[0298] Mmax=PEB×[(3×L / 4)―{(CW+ID2) / 2}]…(72)

[0299] From the above equation (72), the maximum bending moment Mmax generated on deck slab 1 due to the equivalent concentrated load PEB per 1 m width of deck slab 1 is 5198 N·m.

[0300] The maximum stress intensity FZ1 of the deck slab 1 in the running area Z1 of the vehicle 30 can be calculated from the following relational expression, where Zte is the section modulus of the lower flange side of the deck plate 2 and cZt is the section modulus of the steel side of the deck slab 1.

[0301] FZ1=(MDL / Zte)+(Mmax / cZt)…(73)

[0302] From the above formula (73), the maximum stress FZ1 of the deck slab 1 in the running area Z1 of the vehicle 30 is 75.6 N / mm 2 This becomes:

[0303] From the above equations (72) and (73), if the following inequality is satisfied, the value of the maximum stress FZ1 of the deck slab 1 in the running area Z1 of the vehicle 30 will be less than or equal to the value of the allowable stress FSZ1 of the deck slab 1 in the running area Z1 of the vehicle 30, and therefore it can be said that the design conditions are met.

[0304] FZ1≦FSZ1…(74)

[0305] The allowable stress FSZ1 of the deck slab 1 in the running area Z1 of the vehicle 30 is 157 N / mm 2 Therefore, the above formula (74) is 75.6N / mm 2 ≦157N / mm 2 It can be said that the maximum stress intensity FZ1 of the deck slab 1 in the running area Z1 of the vehicle 30 satisfies the design conditions.

[0306] Next, a method for calculating the maximum shear force Qmax acting on the deck slab 1 due to the action of the equivalent concentrated load PEB per 1 m width of the deck slab 1 will be described. The maximum shear force Qmax acting on the deck slab 1 in the travel area Z1 of the vehicle 30 due to the action of the equivalent concentrated load PEB per 1 m width of the deck slab 1 is calculated from the following relational expression.

[0307] Qmax=PEB×[3―{3×(CW+ID2)} / (2×L)]…(75)

[0308] From the above equation (75), when the equivalent concentrated load PEB per 1 m width of the deck slab 1 acts, the maximum shear force Qmax acting on the deck slab 1 in the travel area Z1 of the vehicle 30 is 8190 N.

[0309] The allowable shear force QS1 of the deck slab 1 in the running area Z1 of the vehicle 30 can be calculated from the following equation, where the allowable shear stress of the deck slab 1 is τa, the first moment of area of ​​the deck slab 1 is S, and the second moment of area of ​​the deck slab 1 is I.

[0310] QS1=τa×I / S…(76)

[0311] From the above formula (76), the allowable shear force QS2 of the deck slab 1 in the running area Z1 of the vehicle 30 is 26,600 N.

[0312] From the above equations (75) and (76), if the following inequality is satisfied, the value of the maximum shear force Qmax acting on deck slab 1 in the running area Z1 of vehicle 30 will be less than or equal to the value of the allowable shear force QS1 of deck slab 1 in the running area Z1 of vehicle 30, and therefore it can be said that the design conditions are met.

[0313] Qmax≦QS1…(77)

[0314] The above formula (77) becomes 8190N≦26600N, and it can be said that the maximum shear force Qmax acting on the deck slab 1 in the running area Z1 of the vehicle 30 satisfies the design conditions.

[0315] <Example of moment calculation by the calculation unit taking into account the degree of fixation of the deck slab> Next, design considerations when calculating the moment caused by the load acting on the deck slab 1 using the calculation unit 113 will be described. First, a method for calculating the degree of fixation of the deck slab 1 will be described. FIG. 21 is a perspective view showing the bending moment generated in a deck slab installed in an area surrounded by a main girder and a secondary girder. FIG. 22A is a diagram showing the load acting on a simply supported one-way deck slab and the resulting positive bending moment. FIG. 22B is a diagram showing the load acting on a deck slab with both ends fixed and the bending moment that occurs.

[0316] 21 shows that the deck slab 1 is laid on an XY plane surrounded by columns 51 and girders 52. Three sub-girders 53 are laid between a pair of girders 52 laid in the X-axis direction. In the X-axis direction, since the deck slab 1 has a structure in which fixed support beams at both ends are continuous, a uniformly distributed load generated by the weight of the deck slab 1 (including fixed load, finishing load, live load, etc.) acts on the deck slab 1, generating a bending moment 55A. In the Y-axis direction, since the deck slab 1 has a structure in which fixed support beams at both ends are continuous, a uniformly distributed load generated by the weight of the deck slab 1 (including fixed load, finishing load, live load, etc.) acts on the deck slab 1, generating a bending moment 55B.

[0317] Conventionally, when calculating the bending moment caused by the load acting on the deck slab 1, even for the deck slab 1 shown in FIG. 21, the calculation was performed by regarding it as a beam structure supported by pins at both ends. That is, as shown in Figure 22A, it was assumed that a uniformly distributed load WS acting on a deck slab 1 having a support distance L generates a positive bending moment MS, and a determination was made as to whether the deck slab 1 has sufficient allowable stress against the maximum positive bending moment MSmax that occurs at the midpoint of the support distance L in the X-axis direction.

[0318] However, as shown in Figure 21, the deck slab 1 is usually fixed to the main beams 52 and the secondary beams 53, and the deck slab 1 shown in Figure 21 can be considered to have a fixed support beam structure at both ends, as shown in Figure 22B. That is, as shown in Figure 22B, it is assumed that a uniformly distributed load WF acting on a deck slab 1 having a support distance L generates a positive bending moment MF1 and a negative bending moment MF2, and it is then determined whether the deck slab 1 has sufficient allowable stress for the maximum positive bending moment MF1max that occurs at the midpoint of the support distance L in the X-axis direction and the maximum negative bending moment MF2max that occurs at the end in the X-axis direction.

[0319] The magnitude of the maximum positive bending moment MSmax occurring at the midpoint of the support distance L in the X-axis direction shown in FIG. 22A can be calculated from the following relational expression.

[0320] MSmax = {WS × (L^2)} / 8…(78)

[0321] On the other hand, the maximum positive bending moment MF1max generated at the midpoint of the support distance L in the X-axis direction shown in Figure 22B and the maximum negative bending moment MF2max generated at the end in the X-axis direction can be calculated using the following relational expressions.

[0322] MF1max={WF×(L^2)} / 24…(79)

[0323] MF2max={WF×(L^2)} / 12…(80)

[0324] In the above equations (78) to (80), if the uniformly distributed load WS acting on the deck slab 1 is equal to the uniformly distributed load WF, the following relational expression is established.

[0325] MF1max=MSmax / 3…(81)

[0326] MF2max=2×MSmax / 3…(82)

[0327] Furthermore, a uniformly distributed load WS acting on the deck slab 1 with a support distance L causes the deck slab 1 to deflect. If the Young's modulus of the steel is E, the Young's modulus ratio is n, and the second moment of area of ​​the deck slab 1 is I, the maximum deflection δSmax under the conditions of Figure 22A can be calculated using the following relational expression.

[0328] δSmax={5×WS×(L^4)×n} / (384×E×I)…(83)

[0329] A uniformly distributed load WF acting on a deck slab 1 with a support distance L causes the deck slab 1 to deflect. If the Young's modulus of the steel is E, the Young's modulus ratio is n, and the second moment of area of ​​the deck slab 1 is I, the maximum deflection δFmax under the conditions of Figure 22B can be calculated using the following relational expression.

[0330] δFmax={WF×(L^4)×n} / (384×E×I)…(84)

[0331] In the above equations (83) and (84), if the uniformly distributed load WS acting on the deck slab 1 is equal to the uniformly distributed load WF, the following relational expression is established.

[0332] δFmax=δSmax / 5…(85)

[0333] From the above equations (81), (82), and (85), when comparing a double-pinned beam structure with a double-fixed beam structure, it can be seen that the absolute value of the maximum bending moment for the double-fixed beam structure is two-thirds of that for the double-pinned beam structure, and the maximum deflection amount for the double-fixed beam structure is one-fifth of that for the double-pinned beam structure.In the case of deck slab 1 in Figure 21, the double-fixed beam structure is a structure closer to reality than the double-pinned beam structure, so more rational structural calculations can be performed by using the above equations (78) to (85).

[0334] However, if there is a void or opening near the deck slab 1 shown in Figure 21, or if the flexural and torsional rigidity of the girders 52 and sub-girders 53 is low, the degree of fixation between the girders 52 and sub-girders 53 and the deck slab 1 decreases, resulting in a change in the distribution of bending moments. As the degree of fixation between the girders 52 and sub-girders 53 and the deck slab 1 decreases, certain conditions shift from a fixed-support beam structure to a pin-support beam structure. This is particularly noticeable in steel-frame construction. On the other hand, reinforced concrete construction, compared to steel-frame construction, has a greater degree of fixation between the beams and floor, so the degree of fixation reduction due to surrounding conditions is mitigated. Furthermore, since openings may be created in the deck slab 1 after its construction, the environment in which the deck slab 1 is installed may change between the construction stage and the completed stage, resulting in different bending moment distributions. In such cases, simply applying the above equations (78) through (85) does not allow for structural calculations that accurately reflect the actual situation. Therefore, by taking into consideration information about the structure on which the deck slab 1 is installed, information about the method of joining the deck plate 2 to the beam, and additional information about the distance between supports, and calculating the generated moment using the finite element method, it becomes possible to take into account the degree of fixation of the deck slab 1, thereby making it possible to perform structural calculations that are in line with actual conditions and that are more rational. The specific information about the structure on which the deck slab 1 is to be installed includes the type of structure (steel frame, reinforced concrete, wood, other structure), information about the columns and beams (including main girders 52 and secondary girders 53) (dimensions, material, components, whether or not they are composite beams), information about the method of joining the deck plate 2 to the beams, such as whether or not it is stud welded (including headed studs), whether or not it is bung welded, whether or not it is joined with a driven rivet, whether or not it is spot welded, bolted, drilled screwed, etc., whether or not the deck plate is swallowed, and whether or not it is fixed with reinforcing bars, and additional information about the distance between supports, such as whether or not it is supported in the extension direction of the deck plate 2, whether or not it is supported in the width direction of the deck plate 2, and information about the distance from the main girders 52 and secondary girders 53.

[0335] <Differences in generated moments between one-way deck slabs and two-way deck slabs> Next, the difference between the generated moments of a one-way deck slab and a two-way deck slab when moment calculation is performed by the calculation unit 113 will be described. FIG. 23A is a diagram showing the load acting on a one-way deck slab and the positive bending moment that occurs. FIG. 23B is a diagram showing the load acting on a two-way deck slab and the resulting positive bending moment. Conventionally, the deck slab 1 shown in Figure 21 has been calculated assuming a one-way slab structure. That is, as shown in Figure 23A, in the deck slab 1 having a support distance L, it was assumed that the load acts only in the X-axis direction, and only a positive bending moment MX occurs, and then it was determined whether the deck slab 1 has sufficient allowable stress.

[0336] However, as shown in Figure 21, the deck slab 1 is laid in an area surrounded by main girders 52 and secondary girders 53, and it can be considered that the deck slab 1 shown in Figure 21 is subjected to loads not only in the X-axis direction but also in the Y-axis direction. That is, as shown in Figure 23B, the deck slab 1 is assumed to be laid on perpendicular cross beams, and the calculation can be performed assuming that a uniformly distributed load WS acting on the deck slab 1 having a support distance L causes a positive bending moment MX between supports of distance LX in the X-axis direction, and a positive bending moment MY between supports of distance LY in the Y-axis direction. As described above, by assuming that a positive bending moment MX occurs in the X-axis direction and a positive bending moment MY occurs in the Y-axis direction, the deck slab 1 can bear loads not only in the extension direction (X-axis direction) but also in the width direction (Y-axis direction), allowing for more rational structural calculations that are in line with actual conditions.

[0337] However, when deck slab 1 is a composite slab structure using a composite slab deck with a peak-valley shape, the cross-sectional performance (composite) differs in the extension direction and width direction, so calculations for a two-way slab cannot be performed using the same method as for an equal-thickness slab. Therefore, by taking into account additional information on the distance between supports and calculating the generated moment using the finite element method, it is possible to take into account the accurate rigidity of the deck slab 1 in the width direction, allowing for structural calculations that are in line with reality and are more rational. Specific additional information regarding the distance between supports includes whether the deck plate 2 is supported in the extension direction, whether the deck plate 2 is supported in the width direction, the type of supporting body and the method of joining it to the slab, the rigidity ratio between the extension direction and width direction of the deck slab 1, and information regarding the distance from the main beam 52 and secondary beam 53.

[0338] <An example of a deck slab structural calculation using the finite element method> Next, the results of structural calculations of the deck slab 1 performed by the calculation unit 113 using the finite element method will be described. FIG. 24 is an example of a perspective view of a portion of a deck slab that is the subject of special load calculations using the finite element method. Figure 25 shows an example of the analysis results of a deck slab in which generated moments were calculated using the finite element method. FIG. 24 shows a structural analysis model 60 of the deck slab 1 that is the subject of structural calculations using the finite element method. The structural analysis model 60 is composed of a mesh in which the structure is divided into a finite number of elements.

[0339] In structural analysis using the finite element method (FEM), a structure to be analyzed is modeled as a structural analysis model 60, and the components of the structural analysis model 60 are divided into a finite number of elements. The assembly of the components divided into a finite number of elements is called a mesh. By dividing the structure to be analyzed into a mesh, which is a collection of components made up of small areas, and repeatedly performing simple calculations using functions, equations, etc. on each component, it becomes possible to perform static and dynamic analysis of the entire mesh to be analyzed. Furthermore, the load acting on the structural analysis model 60 can be set arbitrarily.

[0340] As mentioned above, by taking into account information about the structure on which the deck slab 1 is installed, information about the method of joining the deck plate 2 to the beam, and additional information about the distance between supports, and calculating the generated moment using the finite element method, it is possible to take into account the degree of fixation of the deck slab 1, so that structural calculations can be performed that are in line with the actual situation of the deck slab 1 in Figure 21, and more accurate structural calculations can be performed depending on the specific conditions. Furthermore, by taking into account additional information about the distance between supports and calculating the generated moment using the finite element method, it is possible to take into account the rigidity of the deck slab 1 in the width direction, making it possible to perform structural calculations that are in line with the actual state of the deck slab 1 in Figure 21, and to perform more accurate structural calculations depending on the specific conditions.

[0341] FIG. 25 shows an example of the analysis results obtained by calculating moments generated in the structural analysis model 60 using the finite element method. In this example, the maximum bending moment occurs in the component 61 in FIG. By checking the magnitude of the bending moment generated in the component 61, it is possible to more accurately check whether the deck slab 1 has a sufficient allowable stress.

[0342] <Classification method of loads acting on deck slabs and equivalent conversion method> Next, the types of loads acting on the deck slab 1 and the calculation items for each type of load will be described. FIG. 26A is a diagram of a simply supported model of a deck slab that is the subject of calculation and to which a concentrated load acts. FIG. 26B is a diagram of a simply supported model of a deck slab that is the subject of calculation and to which a distributed load acts locally. An example of a method for classifying loads and a method for converting them into equivalent loads when the calculation unit 113 performs structural calculations on the deck slab 1 will be described below.

[0343] Up until now, calculations have been made mainly regarding loads acting on the deck slab 1 caused by the forklift 20 and the vehicle 30. However, if the load acting on the deck slab 1 can be converted into an equivalent concentrated load or distributed load, the structural calculation according to the present invention can also be applied to loads acting from elements other than the forklift 20 or vehicle 30.

[0344] For example, load types are classified into the following four types, and the structural calculation according to the present invention can be applied to any element to which loads belonging to these categories act. Loads can be broadly divided into two types: concentrated loads and distributed loads. Each of concentrated loads and distributed loads can be further divided into two types: moving loads and static loads. That is, the loads can be classified into the following types: first type is concentrated load and moving load; second type is concentrated load and static load; third type is distributed load and moving load; and fourth type is distributed load and static load. It should be noted that the moving load can also be calculated as a repeated load (including information on the number of times, period, frequency, etc.) by assuming the number of times that the load acts on the deck slab 1.

[0345] Elements on which the first type of concentrated load and moving load acts include not only the forklift 20 and vehicle 30 (passenger car, etc.) described above, but also aerial work vehicles, trucks, etc. The second type of concentrated and static load is the reaction force from the outriggers of vehicles (crawler cranes, caterpillar vehicles, aerial work platforms, trucks, etc.). The third type of element, which is subject to distributed and moving loads, includes crawler cranes, caterpillar vehicles, etc. The fourth type of distributed and static load is applied to elements such as equipment foundations, bookshelves, mobile bookshelves, and heavy equipment such as server racks.

[0346] With regard to the first and third types of loads, which fall under moving loads, the load acting on the deck slab 1 during movement and the load acting on the deck slab 1 at the start of movement are uneven, and generally the load acting on the deck slab 1 at the start of movement is greater. Therefore, it should be noted that even for loads other than the forklift 20, the impact coefficient IC, which is a coefficient representing the ratio of dynamic load to static load, may or may not be taken into consideration.

[0347] For elements on which loads corresponding to the first to fourth types act, by obtaining information on the mass, position, dimensions, acting force, and the position, dimensions, and acting force of the outriggers, it is possible to convert these into an equivalent concentrated load or distributed load acting on the deck slab 1. Since some of these elements are used only during the construction phase of a building, it is also possible to calculate the load as a repeated load, assuming the specific number of times that the load acts on the deck slab 1.

[0348] When concentrated loads and distributed loads acting on deck slab 1 are applied to the points on deck slab 1 where the maximum bending moment and maximum deflection occur, if the maximum bending moment and maximum deflection are below the allowable stress and allowable deflection of deck slab 1, it can be said that the design conditions are met.

[0349] As shown in FIG. 26A, the concentrated load PC acting on the deck slab 1 generates a maximum bending moment and a maximum deflection amount mainly at the midpoint of the support distance L of the deck slab 1. Furthermore, as shown in Figure 26B, the distributed load WD acting on the deck slab 1 generates a maximum bending moment and a maximum deflection amount mainly when the midpoint L / 2 of the support distance L of the deck slab 1 and the center point of the distributed load WD overlap. Specifically, this is the case when the following relationship holds between the support distance L of the deck slab 1 in the X-axis direction, the width LD1 where the distributed load WD acts, and LD2 and LD3, which are the widths of the area within the support distance L of the deck slab 1 where the distributed load WD does not act.

[0350] L = LD1 + LD2 = LD3…(86)

[0351] LD2=LD3…(87)

[0352] However, the moment and deflection caused by concentrated or distributed load acting on the deck slab 1 change depending on the conditions of the deck slab 1, the conditions of the concentrated or distributed load, the conditions of the beam, etc., so it cannot necessarily be said that the maximum bending moment or maximum deflection occurs at the midpoint of the support distance L of the deck slab 1. Therefore, for concentrated loads or distributed loads acting on the deck slab 1, the position and magnitude at which the maximum bending moment and maximum deflection occur can be calculated by performing structural calculations using the finite element method described above. In addition, when evaluating the vibration performance of deck slab 1, it is also possible to check whether there are any problems with the strength or livability of deck slab 1 by applying a concentrated load or distributed load at the position where the amplitude is greatest by analyzing the natural frequency of deck slab 1.

[0353] <<Deck slab design method>> A method for designing a deck slab according to an embodiment of the present invention will be described below. FIG. 27 is a flowchart showing a deck slab design method according to an embodiment of the present invention.

[0354] As an example of a deck slab design method according to an embodiment of the present invention, an example of a design method using the information processing device 100 will be described below. First, the input receiving unit 111 acquires the calculation information 112A to 112G and the determination information 112H (step S1). Furthermore, the input receiving unit 111 stores the received calculation information 112A to 112G and judgment information 112H in the storage unit 112. The calculation information includes first calculation information 112A, second calculation information 112B, third calculation information 112C, fourth calculation information 112D, fifth calculation information 112E, sixth calculation information 112F, and seventh calculation information 112G. The calculation information 112A to 112G and the determination information 112H include information necessary for designing the deck slab 1 as described above.

[0355] The first calculation information 112A includes, for example, tension material specification information, which is information regarding the physical properties and cross-sectional area of ​​the tension material, such as information regarding the height of the deck plate 2, information regarding the plate thickness of the deck plate 2, and information regarding the specifications of the reinforcing bars 4, and compression material specification information, which is information regarding the physical properties and cross-sectional area of ​​the compression material, such as information regarding the specifications of the concrete 3, but is not limited to these.

[0356] Furthermore, the second calculation information 112B includes, for example, the tensile material specification information, information regarding the height of the deck plate 2, information regarding the plate thickness of the deck plate 2, information regarding the material of the deck plate 2, and information regarding the specifications of the reinforcing bars 4; the compression material specification information, information regarding the specifications of the concrete 3, information regarding the support distance indicating the interval at which the deck plate 2 is supported by multiple beams, information regarding the live load and finishing load acting on the deck slab 1, and information regarding the fixed load acting on the deck slab 1, but is not limited to these.

[0357] In addition, the third calculation information 112C includes, for example, at least some of the following information regarding the load acting on the deck slab 1 by vehicles 20, 30 traveling on the deck slab 1, information regarding the wheel spacing WI of the vehicles 20, 30, information regarding the wheelbase WB of the vehicles 20, 30, information regarding the proportion of the load acting on the front wheels 23 of the vehicle 20, and information regarding the impact coefficient, which is a coefficient representing the ratio of dynamic load to static load, but is not limited to these.

[0358] In addition, the fourth calculation information 112D includes, for example, information regarding the support distance, additional support distance information which is information regarding the laying direction of the deck plate 2 and the distance between the main beam 52 and the secondary beam 53, information regarding the structure on which the deck slab 1 is installed, and information regarding the method of joining the deck plate 2 and the beam, but is not limited to these.

[0359] Furthermore, the fifth calculation information 112E includes, for example, information relating to the inter-support distance and the inter-support distance additional information, but is not limited to these.

[0360] Furthermore, the sixth calculation information 112F includes, for example, information regarding the support distance, additional support distance information, information regarding the main body, and information regarding the joining method, but is not limited to these. Note that only one of these pieces of information may be included depending on the conditions.

[0361] Furthermore, the seventh calculation information 112G includes, for example, information regarding the thickness of the deck plate 2 as the tension material specification information, and information regarding the specifications of the concrete 3 as the compression material specification information, but is not limited to these.

[0362] Furthermore, the judgment information 112H includes, for example, information regarding the material of the deck plate 2 as the tensile material specification information, information regarding the specifications of the concrete 3 as the compression material specification information, information regarding the support distance, and information regarding the allowable stress of the deck slab 1, but is not limited to these. Note that only one of these pieces of information may be included depending on the conditions.

[0363] Next, the calculation unit 113 calculates an index indicating the cross-sectional performance of the deck slab 1 based on the first calculation information 112A (step S2). Step S2 is also referred to as a first calculation step. Furthermore, the calculation unit 113 stores the calculated index indicating the cross-sectional performance of the deck slab 1 in the storage unit 112 as a calculation result 112I. The indexes indicating the cross-sectional performance of the deck slab 1 include the section modulus, the first moment of area, and the second moment of area of ​​the deck slab 1. For example, the section modulus, first moment of area, and second moment of area of ​​the deck slab 1 are calculated using a known calculation method based on the height TS of the deck plate 2, the plate thickness TD of the deck plate 2, and the thickness TC of the concrete 3. In addition, the section modulus, first moment of area, and second moment of area of ​​the deck slab 1 may be calculated by a known calculation method based on the specifications of the deck plate 2 and concrete 3 (height TS of the deck plate 2, plate thickness TD of the deck plate 2, thickness TC of the concrete 3) previously stored in the memory unit 112.

[0364] Next, the calculation unit 113 calculates the uniformly distributed load acting on the deck slab 1 based on the second calculation information 112B (step S3). Step S3 is also referred to as a second calculation step. Furthermore, the calculation unit 113 stores the calculation result of the uniformly distributed load acting on the deck slab 1 in the storage unit 112 as a calculation result 112I. Examples of uniformly distributed loads acting on the deck slab 1 include, but are not limited to, the sum of the live load Wl, the finishing load Wc, and the fixed load Wd, as mentioned above, the sum of the live load Wl and the finishing load Wc, the fixed load WDL of the deck slab 1, the uniformly distributed load WS acting on the deck slab 1 having the support distance L, the uniformly distributed load WF acting on the deck slab 1 having the support distance L, and the distributed load WD acting on the deck slab 1.

[0365] Next, the calculation unit 113 calculates a special load, which is a concentrated load acting on the deck slab 1 due to an object placed on the deck slab 1, based on the third calculation information 112C (step S4). Step S4 is also referred to as a third calculation step. Furthermore, the calculation unit 113 stores the calculation result of the special load acting on the deck slab 1 in the storage unit 112 as a calculation result 112I. Examples of special loads acting on the deck slab 1 include, but are not limited to, the effective wheel load per unit width PA, the effective wheel load per unit width PB, the equivalent concentrated load PEA per 1 m width of the deck slab 1, the equivalent concentrated load PEB per 1 m width of the deck slab 1, and the concentrated load PC acting on the deck slab 1, as mentioned above. Next, the calculation unit 113 calculates the deck slab effective width VW, which is the width of the range in which the deck slab 1 bears the load when the special load acts on the deck slab 1, based on the fourth calculation information 112D and the calculation result of the special load calculated in step S4 (step S5). Step S5 is also referred to as the fourth calculation step. Furthermore, the calculation unit 113 stores the calculation result of the deck slab effective width VW in the storage unit 112 as a calculation result 112I. As mentioned above, the deck slab effective width VW may be, for example, the deck slab effective width VW1 in an example (part 1) of the deck slab structural calculation by the calculation unit 113, or the deck slab effective width VW2 in an example (part 2) of the deck slab structural calculation by the calculation unit 113, but is not limited to these.

[0366] Next, the calculation unit 113 calculates a load data pair, which is a combination of loads acting under specific conditions, based on the fifth calculation information 112E, the calculation result of the uniformly distributed load calculated in step S3, the calculation result of the special load calculated in step S4, and the calculation result of the deck slab effective width VW calculated in step S5 (step S6). Step S6 is also referred to as the fifth calculation step. Furthermore, the calculation unit 113 stores the calculation results of the calculated load data pairs in the storage unit 112 as calculation results 112I. The specific conditions include, for example, as mentioned above, whether the structure is a pin-supported beam structure at both ends or a fixed-supported beam structure at both ends, and information regarding the degree of fixation of the deck slab 1, but are not limited to these. As mentioned above, examples of load data pairs include, but are not limited to, combinations of live load Wl and finishing load Wc and effective wheel load per unit width PA (including information regarding the position of action), combinations of live load Wl, finishing load Wc and fixed load Wd acting on the overlap and effective wheel load PA (including information regarding the position of action), combinations of live load Wl and finishing load Wc and effective wheel load PB per unit width (including information regarding the position of action), combinations of live load Wl, finishing load Wc and fixed load Wd acting on the overlap and effective wheel load PB per unit width (including information regarding the position of action), equivalent concentrated loads PEA and PEB per 1 m width of deck slab 1 (including information regarding the position of action), uniformly distributed loads WS and WF acting on deck slab 1 (including information regarding the position of action), and combinations of concentrated load PC acting on deck slab 1 (including information regarding the position of action) and fixed load Wd acting on deck slab 1 (including information regarding the position of action).

[0367] Next, the calculation unit 113 performs a structural calculation of the deck slab based on the sixth calculation information 112F, the calculation results of the index representing the cross-sectional performance calculated in step S2, the calculation results of the deck slab effective width VW calculated in step S5, and the calculation results of the load data pair calculated in step S6 (step S7). Step S7 is also referred to as the sixth calculation step. Furthermore, the calculation unit 113 stores the calculated structural calculation results of the deck slab in the storage unit 112 as calculation results 112I. The structural calculation of the deck slab performed in step S7 includes the maximum positive bending moment occurring in the deck slab 1, the maximum negative bending moment occurring in the deck slab 1, and the maximum amount of deflection occurring in the deck slab 1. However, depending on the conditions, it is possible to calculate only one of the maximum positive bending moment occurring in the deck slab 1, the maximum negative bending moment occurring in the deck slab 1, and the maximum deflection amount occurring in the deck slab 1. Specific calculations of the maximum positive bending moment Mfmax occurring in the deck slab 1, the maximum negative bending moment Mnmax occurring in the deck slab 1, and the maximum deflection δmax occurring in the deck slab 1 are performed based on (1) to (87) above. In the fourth calculation information 112D acquired in step S1, if "burnt plug welding" or "joining by hammered rivets" is not selected as information regarding the method of joining the deck plate 2 and the beam, for example, if "headed stud welding" is selected (step S8: No), proceed to step S9.

[0368] If "burn-out plug welding" or "joining by driven rivets" is selected as information regarding the joining method between the deck plate 2 and the beam in the fourth calculation information 112D acquired in step S1, then in step S7, the maximum shear force acting on the deck slab 1 is calculated based on the information regarding the support distance, the calculation result of the deck slab effective width VW calculated in step S5, and the calculation result of the load data pair calculated in step S6. The specific calculation of the maximum shear force Qmax acting on the deck slab 1 is performed based on the above (1) to (87).

[0369] Next, if "burn-out plug welding" or "joining by driven rivets" is selected as information regarding the joining method between the deck plate 2 and the beam in the fourth calculation information 112D acquired in step S1, the calculation unit 113 calculates the allowable shear stress of the deck slab 1 based on the seventh calculation information 112G (step S9). Step S9 is also referred to as the seventh calculation step. Furthermore, the calculation unit 113 stores the calculation result of the allowable shear stress of the deck slab 1 in the storage unit 112 as a calculation result 112I. The allowable shear stress of the deck slab 1 may be, for example, the allowable shear stress τa of the deck slab 1 as described above, but is not limited to this.

[0370] Next, the calculation unit 113 determines whether the result of the structural calculation calculated in the sixth calculation step is equal to or less than a reference value set based on the determination information 112H, the calculation result of the index representing the cross-sectional performance calculated in the first calculation step, and the result of the structural calculation calculated in the sixth calculation step (step S10). The reference value is set based on the above (1) to (87). Furthermore, the calculation unit 113 stores the determination result in the storage unit 112 as a calculation result 112I. As mentioned above, the reference values ​​include, for example, the allowable positive stresses FSt and FSc of the deck slab 1 in response to the maximum positive bending moment Mfmax occurring in the deck slab 1, the allowable negative stresses FStn and FScn of the deck slab 1 in response to the maximum negative bending moment Mnmax occurring in the deck slab 1, the allowable deflection δa of the deck slab 1 in response to the maximum deflection δmax occurring in the deck slab 1, and the allowable shear stress τa of the deck slab 1 in response to the maximum shear force Qmax acting on the deck slab 1, but are not limited to these. If the result of the structural calculation is greater than the reference value (step S10: No), the design conditions need to be reviewed, and so the input receiving unit 111 again acquires the calculation information 112A-112G and the judgment information 112H (step S1). Based on the reacquired calculation information 112A-112G and the judgment information 112H, steps S2-S9 are executed again, and this is repeated until the result of the structural calculation becomes equal to or less than the reference value. If the result of the structural calculation is equal to or less than the reference value (step S10: Yes), it is confirmed that the calculation information 112A to 112G and the determination information 112H acquired in step S1 satisfy the design requirements, and the design is completed.

[0371] By the above method, it becomes possible to design the deck slab 1 taking into consideration the specific special load acting on the deck slab 1.

[0372] As described above, the design method for the deck slab 1 according to this embodiment includes an acquisition step S1 for acquiring the first calculation information 112A, the second calculation information 112B, the third calculation information 112C, the fourth calculation information 112D, the fifth calculation information 112E, the sixth calculation information 112F, and the judgment information 112H, a first calculation step S2 for calculating an index showing the cross-sectional performance of the deck slab 1 based on the first calculation information 112A, a second calculation step S3 for calculating the uniformly distributed load acting on the deck slab 1 based on the second calculation information 112B, and a third calculation step S4 for calculating the uniformly distributed load acting on the deck slab 1 based on the third calculation information 112C. a third calculation step S4 for calculating a special load, which is a concentrated load acting on the deck slab due to an object placed on the deck slab, based on the fourth calculation information 112D and the calculation result of the special load calculated in the third calculation step S4; a fourth calculation step S5 for calculating an effective deck slab width, which is a width of a range in which the deck slab 1 bears the load when the special load acts on the deck slab 1, based on the fifth calculation information 112E, the calculation result of the uniformly distributed load calculated in the second calculation step S3, and the calculation result of the special load calculated in the third calculation step S4; a fifth calculation step S6 of calculating a load data pair which is a combination of loads acting under specific conditions based on the result of calculation of the index representing the cross-sectional performance calculated in the first calculation step S2, the calculation result of the deck slab effective width calculated in the fourth calculation step S5, and the calculation result of the load data pair calculated in the fifth calculation step S6; a sixth calculation step S7 of performing a structural calculation of the deck slab 1 based on the sixth calculation information 112F, the calculation result of the index representing the cross-sectional performance calculated in the first calculation step S2, the calculation result of the deck slab effective width calculated in the fourth calculation step S5, and the calculation result of the load data pair calculated in the fifth calculation step S6; and a determination step S10 for determining whether or not the result of the structural calculation calculated by the above is equal to or less than a reference value set based on the determination information 112H and the calculation result of the index representing the cross-sectional performance calculated in the first calculation step S2, wherein the first calculation information 112A includes, as tension member specification information which is information about the physical properties and cross-sectional area of ​​the tension member, information about the height of the deck plate 2, information about the plate thickness of the deck plate 2, and information about the specifications of the reinforcing bars 4, and as compression member specification information which is information about the physical properties and cross-sectional area of ​​the compression member,The second calculation information 112B includes, as the tensile member specification information, information on the height of the deck plate 2, information on the plate thickness of the deck plate 2, information on the material of the deck plate 2, and information on the specifications of the reinforcing bars 4, and as the compression member specification information, information on the specifications of the concrete 3, information on the support distance indicating the interval at which the deck plate 2 is supported by a plurality of beams, information on the live load and finishing load acting on the deck slab 1, and information on the load acting on the deck slab 1. The third calculation information 112C includes, as special load related information which is information related to the calculation of the special load, at least a part of information on the load acting on the deck slab 1 by the vehicles 20, 30 running on the deck slab 1, information on the wheel spacing WI of the vehicles 20, 30, information on the wheelbase WB of the vehicles 20, 30, information on the ratio of the load acting on the front wheels of the vehicle 20, and information on the impact coefficient which is a coefficient representing the ratio of the dynamic load to the static load, and the fourth calculation information 112D includes, as special load related information which is information related to the calculation of the special load, information on the support distance WI of the vehicles 20, 30, information on the wheel spacing WI of the vehicles 20, 30, information on the wheelbase WB of the vehicles 20, 30, information on the ratio of the load acting on the front wheels of the vehicle 20, and information on the impact coefficient which is a coefficient representing the ratio of the dynamic load to the static load. the fifth calculation information 112E includes information on the inter-support distance and the inter-support distance additional information, which is information on the laying direction of the deck plate 2 and the distance between the main girders 52 and the secondary girders 53, information on the skeleton on which the deck slab 1 is to be installed, and information on the joining method between the deck plate 2 and the beams; the fifth calculation information 112E includes information on the inter-support distance and the inter-support distance additional information; the sixth calculation information 112F includes at least one of information on the inter-support distance, the inter-support distance additional information, information on the skeleton, and information on the joining method; and the determination information 112H includes The tension member specification information includes information on the material of the deck plate 2, the compression member specification information includes information on the specifications of the concrete 3, and at least one of information on the support distance and information on the allowable stress of the deck slab 1, and the sixth calculation step S7 includes a step of calculating, as the structural calculation, at least one of the maximum bending moment in the positive direction generated in the deck slab 1, the maximum bending moment in the negative direction generated in the deck slab 1, and the maximum deflection amount generated in the deck slab 1.

[0373] According to this, after obtaining the calculation information 112A to 112G and the judgment information 112H, it is possible to calculate, for example, the section modulus, first moment of area and second moment of area of ​​the deck slab 1 as indicators showing the cross-sectional performance of the deck slab 1 based on the first calculation information 112A. In addition, based on the second calculation information 112B, the uniformly distributed load acting on the deck slab 1 can be calculated, for example, the sum of the live load Wl, finishing load Wc and fixed load Wd, the live load Wl and finishing load Wc, the fixed load WDL of the deck slab 1, the uniformly distributed load WS acting on the deck slab 1 having the support distance L, the uniformly distributed load WF acting on the deck slab 1 having the support distance L, and the distributed load WD acting on the deck slab 1. In addition, based on the third calculation information 112C, special loads, which are concentrated loads acting on the deck slab 1 due to objects placed on the deck slab 1, can be calculated, for example, the effective wheel load per unit width PA, the effective wheel load per unit width PB, the equivalent concentrated load per 1 m width of the deck slab 1 PEA, the equivalent concentrated load per 1 meter width of the deck slab 1 PEB, and the concentrated load PC acting on the deck slab 1. Furthermore, based on the fourth calculation information 112D and the calculation results of the special load, the deck slab effective width can be calculated, for example, as the deck slab effective width VW1 in an example (part 1) of a deck slab structural calculation by the calculation unit 113, or the deck slab effective width VW2 in an example (part 2) of a deck slab structural calculation by the calculation unit 113. In addition, based on the fifth calculation information 112E, the calculation results of the uniformly distributed load, the calculation results of the special load, and the calculation results of the effective width of the deck slab, it is possible to calculate load data pairs, such as information regarding whether the deck slab 1 has a pin-supported beam structure or a fixed-supported beam structure at both ends, information regarding the degree of fixation of the deck slab 1, combinations of the live load Wl and finishing load Wc and the effective wheel load per unit width PA, combinations of the live load Wl, finishing load Wc, and fixed load Wd acting on the overlap and the effective wheel load per unit width PA, combinations of the live load Wl and finishing load Wc and the effective wheel load per unit width PB, and combinations of the live load Wl, finishing load Wc, and fixed load Wd and the effective wheel load per unit width PB. Furthermore, based on the sixth calculation information 112F, the calculation results of the index representing the cross-sectional performance, the calculation results of the deck slab effective width, and the calculation results of the load data pair, structural calculations for the deck slab 1 can be performed, for example, to calculate the maximum positive bending moment Mfmax occurring in the deck slab 1, the maximum negative bending moment Mnmax occurring in the deck slab 1, and the maximum deflection δmax occurring in the deck slab 1. In addition, as standard values ​​set based on the judgment information 112H and the calculation results of the index representing the cross-sectional performance, it is possible to determine, for example, whether the value of the maximum positive bending moment Mfmax occurring in the deck slab 1 is less than or equal to the values ​​of the positive allowable stresses FSt and FSc of the deck slab 1, whether the value of the maximum negative bending moment Mnmax occurring in the deck slab 1 is less than or equal to the values ​​of the negative allowable stresses FStn and FScn of the deck slab 1, and whether the value of the maximum deflection δmax occurring in the deck slab 1 is less than or equal to the value of the allowable deflection δa of the deck slab 1. Therefore, the deck slab 1 can be designed taking into consideration the specific special loads acting on the deck slab 1 from the construction stage to the post-completion stage of the building, such as the uniformly distributed load acting on the deck slab 1 for each load data pair, the maximum bending moment occurring on the deck slab 1 due to concentrated loads, and whether the maximum deflection occurring on the deck slab 1 is below the standard value.

[0374] Furthermore, the design method for the deck slab 1 according to this embodiment further includes a seventh calculation step S8 in which seventh calculation information 112G is acquired in the acquisition step S1, the seventh calculation information 112G including information on the plate thickness of the deck plate 2 as the tensile member specification information and information on the specification of the concrete 3 as the compression member specification information, and the method further includes a seventh calculation step S8 in which an allowable shear stress of the deck slab 1 is calculated based on the seventh calculation information 112G, and the sixth calculation step S7 includes information on the support distance and information on the The fourth calculation step S4 further includes a step of calculating the maximum shear force acting on the deck slab 1 based on the calculation result of the deck slab effective width calculated in the fourth calculation step S5 and the calculation result of the load data pair calculated in the fifth calculation step S6, and the judgment step S10 further includes a step of judging whether or not the maximum shear force acting on the deck slab 1 is below a set standard value based on the calculation result of the index representing the cross-sectional performance calculated in the first calculation step S2, the maximum shear force calculated in the sixth calculation step S7, and the calculation result of the allowable shear stress calculated in the seventh calculation step.

[0375] This allows the maximum positive bending moment, the maximum negative bending moment, and the maximum deflection amount occurring in the deck slab 1 to be calculated, as well as the maximum shear force acting on the deck slab 1 to be calculated. Therefore, for example, it is possible to confirm whether the value of the maximum shear force Qmax acting on the deck slab 1 is less than or equal to the values ​​of the allowable shear forces QS1 and QS2 of the deck slab 1, and to determine whether the value of the maximum shear stress τmax occurring in the deck slab 1 based on the maximum shear force Qmax acting on the deck slab 1 is less than or equal to the value of the allowable shear stress τa of the deck slab 1, thereby improving the design accuracy of the deck slab.

[0376] In addition, in the design method for deck slab 1 according to this embodiment, the information regarding the specific load includes at least one of information regarding the position and dimensions of the vehicle's outriggers and the forces acting on them, information regarding the position and dimensions of the equipment foundation and the forces acting on it, and information regarding the position and dimensions of heavy equipment such as bookshelves, mobile bookshelves, and server racks and the like and the forces acting on them.

[0377] According to this, by converting the load elements into equivalent concentrated loads or distributed loads, structural calculations can be carried out as loads acting on the deck slab 1. Therefore, it is possible to design deck slabs assuming various load data pairs, thereby improving the design accuracy of deck slabs.

[0378] In addition, in the design method for the deck slab 1 according to this embodiment, the first calculation step S2, the second calculation step S3, the third calculation step S4, the fourth calculation step S5, the fifth calculation step S6, and the sixth calculation step S7 are performed using the finite element method.

[0379] According to this, by using the finite element method to calculate the maximum positive bending moment, maximum negative bending moment, maximum deflection, and maximum shear force acting on the deck slab 1, it is possible to more accurately confirm whether the deck slab 1 has sufficient allowable stress. This allows for a more rational design of the deck slab 1.

[0380] The information processing device 100 according to the present embodiment is an information processing device 100 for executing structural calculations for a deck slab 1, and includes an input receiving unit 111 for receiving calculation information 112A to 112G and judgment information 112H transmitted from an information processing terminal 200 connected via a communication network 300, a storage unit 112, and a controller 113 for calculating an index indicating the cross-sectional performance of the deck slab 1 based on the first calculation information 112A, calculating a uniformly distributed load acting on the deck slab 1 based on the second calculation information 112B, and calculating a uniformly distributed load acting on the deck slab 1 based on the third calculation information 112C. A special load, which is a concentrated load acting on the deck slab 1 due to the placed object, is calculated, and a deck slab effective width, which is the width of the range in which the deck slab 1 bears the load when the special load acts on the deck slab 1, is calculated based on the fourth calculation information 112D and the calculation result of the special load, and a load data pair, which is a combination of loads acting under specific conditions, is calculated based on the fifth calculation information 112E, the calculation result of the uniformly distributed load, the calculation result of the special load, and the calculation result of the deck slab effective width, and a load data pair, which is a combination of loads acting under specific conditions, is calculated based on the sixth calculation information 112F and the cross-sectional performance a calculation unit 113 that performs structural calculation of the deck slab 1 based on the calculation result of the index representing the sectional performance, the calculation result of the deck slab effective width, and the calculation result of the load data pair, and performs a judgment process that judges whether or not the result of the structural calculation is equal to or less than a reference value set based on the judgment information 112H based on the sixth calculation information 112F, the calculation result of the index representing the sectional performance, and the judgment information 112H, and stores the calculation result 112I including the result of the structural calculation and the result of the judgment process in the storage unit 112; and an output unit 114 that transmits the result 112I to the information processing terminal via the communication network 300, and the structural calculation performed by the calculation unit 113 includes a process of executing calculations including at least one of calculation of the maximum bending moment in the positive direction that occurs in the deck slab 1, calculation of the maximum bending moment in the negative direction that occurs in the deck slab 1, and calculation of the maximum deflection amount that occurs in the deck slab 1, and the judgment process performed by the calculation unit 113 includes a process of executing calculations including at least one of calculation of the calculated maximum bending moment in the positive direction, maximum bending moment in the negative direction, and maximum deflection amount,The process includes determining whether or not at least one of the above is equal to or less than a reference value set based on the determination information 112H.

[0381] According to this, when a system user inputs calculation information 112A to 112G and judgment information 112H into the information processing terminal 200, the information processing device 100 calculates an index indicating the cross-sectional performance of the deck slab 1, the uniformly distributed load acting on the deck slab 1, the concentrated load acting on the deck slab 1, the deck slab effective width, and load data pairs, and then performs structural calculations for the deck slab 1 based on this information, determines whether the results of the structural calculations are equal to or less than a reference value set based on the judgment information 112H, and transmits calculation results 112I including the results of the structural calculations and the judgment results to the client terminal device 200. Therefore, the system user can accurately and quickly calculate the special load acting on the deck slab 1.

[0382] Furthermore, the information processing system 10 according to this embodiment is an information processing system 10 including an information processing terminal having a display device 215 and a server 100 connected to the information processing terminal 200 via a communication network 300, wherein the information processing terminal 200 includes a reception unit 211, a transmission unit 212, a reception unit 213, and a display control unit 214, and the server 100 includes an input reception unit 111, a memory unit 112, a calculation unit 113, and an output unit 114.

[0383] According to this, a system user inputs the calculation information 112A to 112G and the determination information 112H into the client terminal device 200 that the system user owns, and the information processing device 100 executes calculation of the special load acting on the deck slab 1. Therefore, the system user can check the calculation result 112I sent from the information processing device 100 on the display screen of the client terminal device 200 in a timely manner. <<Extension of Embodiment>> The invention made by the present inventors has been specifically described above based on an embodiment, but it goes without saying that the invention is not limited thereto and can be modified in various ways without departing from the spirit of the invention.

[0384] For example, in the deck slab design method shown in Figure 27, if the result of the structural calculation in step S9 is greater than the reference value, the calculation information 112A to 112G and the judgment information 112H are acquired again (step S1), and steps S2 to S9 are then executed again based on the newly acquired calculation information 112A to 112G and judgment information 112H. However, it is not necessary to acquire all of the calculation information 112A to 112G and judgment information 112H, and it is also possible to acquire only some of the information. Furthermore, when only a portion of the calculation information 112A to 112G and the determination information 112H is acquired, the calculation steps (steps S2 to S7) in which the calculation results are not changed by the acquired portion of information may be omitted.

[0385] For example, in step S8 of the deck slab design method shown in Figure 27, the fourth calculation information 112D acquired in step S1 is intended to determine whether "burn-out plug welding" or "joining by hammered rivets" has been selected as information regarding the method of joining the deck plate 2 and the beam, but the determination process of step S8 may be omitted and the seventh calculation step (step S9) may be executed immediately after the processing of the sixth calculation step. Alternatively, the judgment process of step S8 and the seventh calculation step (step S9) may be omitted, and a judgment may be made as to whether the result of the structural calculation calculated by the sixth calculation step is equal to or less than a reference value (step S10).

[0386] For example, the special load calculation system 10 according to the embodiment of the present invention is realized by an information processing device 100 and a client terminal device 200 connected to a network 300, but the network 300 is not limited to a local area network (LAN) but may be a wide area network (WAN) such as the Internet. In other words, a system user who uses the special load calculation system 10 may connect his / her own client terminal device 200 to an information processing device 100 owned by a business operator that provides the special load calculation system 10 via the Internet, and use the functions of the special load calculation system 10. This allows a system user who uses the special load calculation system 10 to easily and appropriately calculate the special load.

[0387] It is possible that a system user may not be able to input all of the required information because he or she does not have specialized knowledge regarding calculation of special loads. In such a case, by installing an automatic conversation program (chatbot) corresponding to the special load calculation program 102A in the information processing device 100, it is possible for the information processing device 100 to actively inquire of the system user about any missing information required for calculating the special load. [Explanation of symbols]

[0388] 1 Deck slab 2 Deck Plate 3. Concrete 4. Reinforced concrete 10 Special Load Calculation System 20 forklift 21 Main body 22 Fork section 23 Front wheel 24 rear wheels 25 Deck slab effective range 30 vehicles 51 pillars 52 Large beam 53 Small beam 55 Bending moment 60 Structural analysis model using the finite element method 61 Component where maximum bending moment occurred 100 Special load calculation information processing device 200 Client terminal device 300 Network WB Wheelbase WI Wheel spacing VW Deck slab effective width Z1 driving area Z2 Parking Area CW Vehicle width ID1 Inter-vehicle distance ID2 neighbor distance TY Tires WB2 wheelbase

Claims

1. A method for designing a deck slab, comprising: an acquiring step of acquiring first calculation information, second calculation information, third calculation information, fourth calculation information, fifth calculation information, sixth calculation information, and determination information; A first calculation step of calculating an index indicating the cross-sectional performance of the deck slab based on the first calculation information; A second calculation step of calculating a uniformly distributed load acting on the deck slab based on the second calculation information; a third calculation step of calculating a special load, which is a concentrated load acting on the deck slab due to an object placed on the deck slab, based on the third calculation information; A fourth calculation step of calculating a deck slab effective width, which is the width of the range in which the deck slab bears the load when the special load acts on the deck slab, based on the fourth calculation information and the calculation result of the special load calculated in the third calculation step; a fifth calculation step of calculating a load data pair, which is a combination of loads acting under specific conditions, based on the fifth calculation information, the calculation result of the uniformly distributed load calculated in the second calculation step, the calculation result of the special load calculated in the third calculation step, and the calculation result of the deck slab effective width calculated in the fourth calculation step; a sixth calculation step of performing a structural calculation of the deck slab based on the sixth calculation information, the calculation result of the index representing the cross-sectional performance calculated in the first calculation step, the calculation result of the deck slab effective width calculated in the fourth calculation step, and the calculation result of the load data pair calculated in the fifth calculation step; a determination step of determining whether or not the result of the structural calculation calculated by the sixth calculation step is equal to or less than a reference value set based on the determination information and the calculation result of the index representing the cross-sectional performance calculated in the first calculation step, The first calculation information includes, as tension member specification information which is information on the physical properties and cross-sectional area of ​​the tension member, information on the height of the deck plate, information on the plate thickness of the deck plate, and information on the specifications of the reinforcing bars, and includes, as compression member specification information which is information on the physical properties and cross-sectional area of ​​the compression member, information on the specifications of the concrete, The second calculation information includes, as the tension member specification information, information related to the height of the deck plate, information related to the plate thickness of the deck plate, information related to the material of the deck plate, and information related to the specifications of reinforcing bars; and, as the compression member specification information, information related to the specifications of the concrete; information related to the support distance indicating the interval at which the deck plate is supported by a plurality of beams; information related to the live load and finishing load acting on the deck slab; and information related to the fixed load acting on the deck slab. The third calculation information includes, as special load-related information that is information related to the calculation of the special load, at least a portion of information on the load acting on the deck slab by a vehicle running on the deck slab, information on the wheel spacing of the vehicle, information on the wheelbase of the vehicle, information on the proportion of the load acting on the front wheels of the vehicle, and information on an impact coefficient that is a coefficient representing the ratio of the dynamic load to the static load, The fourth calculation information includes information on the support distance, additional support distance information which is information on the deck plate laying direction and the distance between the main beam and the sub-beam, information on the skeleton on which the deck slab is to be installed, and information on the joining method between the deck plate and the beam, The fifth calculation information includes information related to the support distance and the support distance additional information, the sixth calculation information includes at least one of information on the support distance, additional support distance information, information on the skeleton, and information on the joining method; The determination information includes, as the tension member specification information, information on the material of the deck plate, and as the compression member specification information, information on the specification of the concrete, and includes at least one of information on the support distance and information on the allowable stress of the deck slab, The sixth calculation step includes, as the structural calculation, a step of calculating at least one of a maximum bending moment in a positive direction generated in the deck slab, a maximum bending moment in a negative direction generated in the deck slab, and a maximum deflection amount generated in the deck slab. Design method.

2. 2. The deck slab design method according to claim 1, In the acquiring step, seventh calculation information is further acquired; The seventh calculation information includes, as the tension member specification information, information regarding the plate thickness of the deck plate, and as the compression member specification information, information regarding the specification of the concrete, Further comprising a seventh calculation step of calculating an allowable shear stress of the deck slab based on the seventh calculation information, The sixth calculation step further includes, as the structural calculation, a step of calculating a maximum shear force acting on the deck slab, which is calculated based on information related to the support distance, the calculation result of the deck slab effective width calculated in the fourth calculation step, and the calculation result of the load data pair calculated in the fifth calculation step, The determination step further includes a step of determining whether or not the calculated index representing the cross-sectional performance calculated in the first calculation step, the calculated maximum shear force calculated in the sixth calculation step, and the calculated allowable shear stress calculated in the seventh calculation step are equal to or less than a reference value that is set based on the calculated index. Design method.

3. 2. The deck slab design method according to claim 1, The information about the specific load includes at least one of information about the position and dimensions of a vehicle's outrigger and the force acting thereon, information about the position and dimensions of an equipment foundation and the force acting thereon, and information about the position and dimensions of heavy equipment such as bookshelves, mobile bookshelves, and server racks and the like and the force acting thereon. Design method.

4. 2. The deck slab design method according to claim 1, The first calculation step, the second calculation step, the third calculation step, the fourth calculation step, the fifth calculation step, and the sixth calculation step are performed using a finite element method. Design method.

5. An information processing device for performing structural calculations for deck slabs, an input receiving unit that receives information transmitted from an information processing terminal connected via a communication network, the information including at least one of first calculation information, second calculation information, third calculation information, fourth calculation information, fifth calculation information, sixth calculation information, and determination information; A memory unit; An index indicating the cross-sectional performance of the deck slab is calculated based on the first calculation information, a uniformly distributed load acting on the deck slab is calculated based on the second calculation information, a special load which is a concentrated load acting on the deck slab by an object placed on the deck slab is calculated based on the third calculation information, a deck slab effective width which is a width of a range in which the deck slab bears the load when the special load acts on the deck slab is calculated based on the fourth calculation information and the calculation result of the special load, and a calculation result of the fifth calculation information, the calculation result of the uniformly distributed load, the calculation result of the special load, and the calculation of the deck slab effective width. a calculation unit that calculates a load data pair, which is a combination of loads acting under specific conditions, based on the sixth calculation information, the calculation result of the index representing the cross-sectional performance, the calculation result of the deck slab effective width, and the calculation result of the load data pair, performs a structural calculation of the deck slab based on the sixth calculation information, the calculation result of the index representing the cross-sectional performance, and the judgment information, and performs a judgment process to judge whether the result of the structural calculation is equal to or less than a reference value set based on the judgment information, and stores the calculation result, which includes the result of the structural calculation and the result of the judgment process, in the storage unit; an output unit that transmits the calculation result stored in the storage unit to the information processing terminal via the communication network, The first calculation information includes, as tension member specification information which is information on the physical properties and cross-sectional area of ​​the tension member, information on the height of the deck plate, information on the plate thickness of the deck plate, and information on the specifications of the reinforcing bars, and includes, as compression member specification information which is information on the physical properties and cross-sectional area of ​​the compression member, information on the specifications of the concrete, The second calculation information includes, as the tension member specification information, information related to the height of the deck plate, information related to the plate thickness of the deck plate, information related to the material of the deck plate, and information related to the specifications of reinforcing bars; and, as the compression member specification information, information related to the specifications of the concrete; information related to the support distance indicating the interval at which the deck plate is supported by a plurality of beams; information related to the live load and finishing load acting on the deck slab; and information related to the fixed load acting on the deck slab. The third calculation information includes, as special load-related information that is information related to the calculation of the special load, at least a portion of information on the load acting on the deck slab by a vehicle running on the deck slab, information on the wheel spacing of the vehicle, information on the wheelbase of the vehicle, information on the proportion of the load acting on the front wheels of the vehicle, and information on an impact coefficient that is a coefficient representing the ratio of the dynamic load to the static load, The fourth calculation information includes information on the support distance, additional support distance information which is information on the deck plate laying direction and the distance between the main beam and the sub-beam, information on the skeleton on which the deck slab is to be installed, and information on the joining method between the deck plate and the beam, The fifth calculation information includes information related to the support distance and the support distance additional information, the sixth calculation information includes at least one of information on the support distance, additional support distance information, information on the skeleton, and information on the joining method; The determination information includes, as the tension member specification information, information on the material of the deck plate, and as the compression member specification information, information on the specification of the concrete, and includes at least one of information on the support distance and information on the allowable stress of the deck slab, The structural calculation of the deck slab performed by the calculation unit includes a process of executing calculations including at least one of a calculation of a maximum bending moment in a positive direction that occurs in the deck slab, a calculation of a maximum bending moment in a negative direction that occurs in the deck slab, and a calculation of a maximum deflection amount that occurs in the deck slab, The determination process performed by the calculation unit includes a process of determining whether or not at least one of the calculated maximum bending moment in the positive direction, the maximum maximum bending moment in the negative direction, and the maximum deflection amount is equal to or less than a reference value set based on the determination information. Information processing device.

6. 6. The information processing device according to claim 5, the input receiving unit receives seventh calculation information transmitted from the information processing terminal connected via the communication network; The seventh calculation information includes, as the tension member specification information, information regarding the plate thickness of the deck plate, and as the compression member specification information, information regarding the specification of the concrete, The calculation unit, as the structural calculation, calculates the allowable shear stress of the deck slab based on the seventh calculation information, calculates the maximum shear force acting on the deck slab based on information on the support distance, the calculation result of the deck slab effective width, and the calculation result of the load data pair, performs the judgment process to determine whether the calculation result of the maximum shear force is equal to or less than a reference value set based on the calculation result of the index representing the cross-sectional performance and the calculation result of the allowable shear stress, and stores the calculation result in the memory unit. Information processing device.

7. 6. The information processing device according to claim 5, The information about the specific load includes at least one of information about the position and dimensions of a vehicle's outrigger and the force acting thereon, information about the position and dimensions of an equipment foundation and the force acting thereon, and information about the position and dimensions of heavy equipment such as bookshelves, mobile bookshelves, and server racks and the like and the force acting thereon. Information processing device.

8. 6. The information processing device according to claim 5, The calculation unit performs the structural calculation using a finite element method. Information processing device.

9. A program for causing a computer to perform structural calculations for deck slabs, an input receiving step of receiving information including at least one of first calculation information, second calculation information, third calculation information, fourth calculation information, fifth calculation information, sixth calculation information, and determination information; An index showing the cross-sectional performance of the deck slab is calculated based on the first calculation information, a uniformly distributed load acting on the deck slab is calculated based on the second calculation information, a special load which is a concentrated load acting on the deck slab by an object placed on the deck slab is calculated based on the third calculation information, an effective deck slab width which is a width of a range in which the deck slab bears the load when the special load acts on the deck slab is calculated based on the fourth calculation information and the calculation result of the special load, and a calculation result of the effective deck slab width is calculated based on the fifth calculation information, the calculation result of the uniformly distributed load, the calculation result of the special load, and the calculation result of the effective deck slab a calculation step of calculating a load data pair, which is a combination of loads acting under specific conditions, based on the sixth calculation information, the calculation result of the index representing the cross-sectional performance, the calculation result of the deck slab effective width, and the calculation result of the load data pair, performing a structural calculation of the deck slab based on the sixth calculation information, the calculation result of the index representing the cross-sectional performance, and the determination information, performing a determination process to determine whether or not the result of the structural calculation is equal to or less than a reference value set based on the determination information, and storing the calculation result including the result of the structural calculation and the result of the determination process in a storage unit; an output step of outputting the calculation result stored in the storage unit, The first calculation information includes, as tension member specification information which is information on the physical properties and cross-sectional area of ​​the tension member, information on the height of the deck plate, information on the plate thickness of the deck plate, and information on the specifications of the reinforcing bars, and includes, as compression member specification information which is information on the physical properties and cross-sectional area of ​​the compression member, information on the specifications of the concrete, The second calculation information includes, as the tension member specification information, information related to the height of the deck plate, information related to the plate thickness of the deck plate, information related to the material of the deck plate, and information related to the specifications of reinforcing bars; and, as the compression member specification information, information related to the specifications of the concrete; information related to the support distance indicating the interval at which the deck plate is supported by a plurality of beams; information related to the live load and finishing load acting on the deck slab; and information related to the fixed load acting on the deck slab. The third calculation information includes, as special load-related information that is information related to the calculation of the special load, at least a portion of information on the load acting on the deck slab by a vehicle running on the deck slab, information on the wheel spacing of the vehicle, information on the wheelbase of the vehicle, information on the proportion of the load acting on the front wheels of the vehicle, and information on an impact coefficient that is a coefficient representing the ratio of the dynamic load to the static load, The fourth calculation information includes information on the support distance, additional support distance information which is information on the deck plate laying direction and the distance between the main beam and the sub-beam, information on the skeleton on which the deck slab is to be installed, and information on the joining method between the deck plate and the beam, The fifth calculation information includes information related to the support distance and the support distance additional information, the sixth calculation information includes at least one of information on the support distance, additional support distance information, information on the skeleton, and information on the joining method; The determination information includes, as the tension member specification information, information on the material of the deck plate, and as the compression member specification information, information on the specification of the concrete, and includes at least one of information on the support distance and information on the allowable stress of the deck slab, The structural calculation of the deck slab includes a process of executing calculations including at least one of calculations of a maximum bending moment in a positive direction that occurs in the deck slab, calculations of a maximum bending moment in a negative direction that occurs in the deck slab, and calculations of a maximum deflection amount that occurs in the deck slab, the determination process includes a process of determining whether or not at least one of the calculated maximum bending moment in the positive direction, the maximum maximum bending moment in the negative direction, and the maximum deflection amount is equal to or less than a reference value set based on the determination information. program.

10. 10. The program according to claim 9, In the input receiving step, seventh calculation information is further acquired, The seventh calculation information includes, as the tension member specification information, information regarding the plate thickness of the deck plate, and as the compression member specification information, information regarding the specification of the concrete, The structural calculation in the calculation step further includes: calculating an allowable shear stress of the deck slab based on the seventh calculation information; and calculating a maximum shear force acting on the deck slab based on information on the support distance, the calculation result of the deck slab effective width, and the calculation result of the load data pair; the determination information further includes a calculation result of the cross-sectional performance index and a calculation result of the allowable shear stress, The determination process in the calculation step further includes a determination process for determining whether the calculation result of the maximum shear force acting on the deck slab is equal to or less than a reference value set based on the determination information. program.

11. 10. The program according to claim 9, The information about the specific load includes at least one of information about the position and dimensions of a vehicle's outrigger and the force acting thereon, information about the position and dimensions of an equipment foundation and the force acting thereon, and information about the position and dimensions of heavy equipment such as bookshelves, mobile bookshelves, and server racks and the like and the force acting thereon. program.

12. 10. The program according to claim 9, The structural calculation is performed using a finite element method. program.

13. An information processing system comprising: an information processing terminal having a display device; and a server connected to the information processing terminal via a communication network, The information processing terminal a receiving unit that receives information input by a system user, the information including at least one of first calculation information, second calculation information, third calculation information, fourth calculation information, fifth calculation information, sixth calculation information, and determination information; a transmitting unit that transmits the information received by the receiving unit to the server via the communication network; a receiving unit that receives information transmitted from the server via the communication network; a display control unit that displays the information received by the receiving unit on a display device, The server an input receiving unit that receives information transmitted from the information processing terminal connected via the communication network, the information including at least one of the first calculation information, the second calculation information, the third calculation information, the fourth calculation information, the fifth calculation information, the sixth calculation information, and the determination information; A memory unit; An index indicating the cross-sectional performance of the deck slab is calculated based on the first calculation information, a uniformly distributed load acting on the deck slab is calculated based on the second calculation information, a special load which is a concentrated load acting on the deck slab by an object placed on the deck slab is calculated based on the third calculation information, a deck slab effective width which is a width of a range in which the deck slab bears the load when the special load acts on the deck slab is calculated based on the fourth calculation information and the calculation result of the special load, and a calculation result of the fifth calculation information, the calculation result of the uniformly distributed load, the calculation result of the special load, and the calculation of the deck slab effective width. a calculation unit that calculates a load data pair, which is a combination of loads acting under specific conditions, based on the sixth calculation information, the calculation result of the index representing the cross-sectional performance, the calculation result of the deck slab effective width, and the calculation result of the load data pair, performs a structural calculation of the deck slab based on the sixth calculation information, the calculation result of the index representing the cross-sectional performance, and the judgment information, and performs a judgment process to judge whether the result of the structural calculation is equal to or less than a reference value set based on the judgment information, and stores the calculation result, which includes the result of the structural calculation and the result of the judgment process, in the storage unit; an output unit that transmits the calculation result stored in the storage unit to the information processing terminal via the communication network, The first calculation information includes, as tension member specification information which is information on the physical properties and cross-sectional area of ​​the tension member, information on the height of the deck plate, information on the plate thickness of the deck plate, and information on the specifications of the reinforcing bars, and includes, as compression member specification information which is information on the physical properties and cross-sectional area of ​​the compression member, information on the specifications of the concrete, The second calculation information includes, as the tension member specification information, information related to the height of the deck plate, information related to the plate thickness of the deck plate, information related to the material of the deck plate, and information related to the specifications of reinforcing bars; and, as the compression member specification information, information related to the specifications of the concrete; information related to the support distance indicating the interval at which the deck plate is supported by a plurality of beams; information related to the live load and finishing load acting on the deck slab; and information related to the fixed load acting on the deck slab. The third calculation information includes, as special load-related information that is information related to the calculation of the special load, at least a portion of information on the load acting on the deck slab by a vehicle running on the deck slab, information on the wheel spacing of the vehicle, information on the wheelbase of the vehicle, information on the proportion of the load acting on the front wheels of the vehicle, and information on an impact coefficient that is a coefficient representing the ratio of the dynamic load to the static load, The fourth calculation information includes information on the support distance, additional support distance information which is information on the deck plate laying direction and the distance between the main beam and the sub-beam, information on the skeleton on which the deck slab is to be installed, and information on the joining method between the deck plate and the beam, The fifth calculation information includes information related to the support distance and the support distance additional information, the sixth calculation information includes at least one of information on the support distance, additional support distance information, information on the skeleton, and information on the joining method; The determination information includes, as the tension member specification information, information on the material of the deck plate, and as the compression member specification information, information on the specification of the concrete, and includes at least one of information on the support distance and information on the allowable stress of the deck slab, The structural calculation performed by the calculation unit includes a process of executing calculations including at least one of a calculation of a maximum bending moment in a positive direction that occurs in the deck slab, a calculation of a maximum bending moment in a negative direction that occurs in the deck slab, and a calculation of a maximum deflection amount that occurs in the deck slab, the determination process performed by the calculation unit includes a process of determining whether or not at least one of the calculated maximum bending moment in the positive direction, the maximum maximum bending moment in the negative direction, and the maximum deflection amount is equal to or less than a reference value set based on the determination information, the receiving unit receives, via the communication network, the calculation result transmitted from the output unit and executed by the calculation unit based on the information transmitted from the transmission unit; the display control unit causes a display device to display the calculation result received by the receiving unit. Information processing system.

14. 14. The information processing system according to claim 13, the input receiving unit receives seventh calculation information transmitted from the information processing terminal connected via the communication network; The seventh calculation information includes, as the tension member specification information, information regarding the plate thickness of the deck plate, and as the compression member specification information, information regarding the specification of the concrete, The calculation unit, as the structural calculation, calculates the allowable shear stress of the deck slab based on the seventh calculation information, calculates the maximum shear force acting on the deck slab based on information on the support distance, the calculation result of the deck slab effective width, and the calculation result of the load data pair, performs the judgment process to determine whether the calculation result of the maximum shear force is equal to or less than a reference value set based on the calculation result of the index representing the cross-sectional performance and the calculation result of the allowable shear stress, and stores the calculation result in the memory unit. Information processing system.

15. 14. The information processing system according to claim 13, The information about the specific load includes at least one of information about the position and dimensions of a vehicle's outrigger and the force acting thereon, information about the position and dimensions of an equipment foundation and the force acting thereon, and information about the position and dimensions of heavy equipment such as bookshelves, mobile bookshelves, and server racks and the like and the force acting thereon. Information processing system.

16. 14. The information processing system according to claim 13, The calculation unit performs the structural calculation using a finite element method. Information processing system.

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