Concrete evaluation system, concrete evaluation method, and concrete evaluation program

Abstract

To provide a concrete evaluation system, a concrete evaluation method, and a concrete evaluation program for evaluating concrete by using a BIM model.SOLUTION: A management device 20 comprises a BIM information storage unit 22 that stores modeling data for members constituting a structure, and a control unit connected to an interface unit. The control unit 21 specifies a section range divided according to the construction process of the structure, acquires structural information of concrete members included in the section range from the BIM information storage unit 22, specifies the construction period of the concrete members, and determines whether the construction is feasible, on the basis of the environmental conditions of the construction period and in accordance with the structural information.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a concrete evaluation system, a concrete evaluation method, and a concrete evaluation program for evaluating concrete used in construction. [Background technology]

[0002] When constructing a large-scale structure through construction work, mass concrete with a large mass and volume may be used. In the "Standard Specifications for Concrete," mass concrete is defined as concrete with a thickness of 80 to 100 cm or more, and 50 cm or more for walls with a restrained bottom. Mass concrete has a large temperature difference within the cross section of the member, and also a large temperature difference over time due to temperature rise and fall, which may cause thermal cracks. For example, Non-Patent Document 1 shows a guideline for evaluating cracks in concrete. In addition, a technology for managing thermal cracks in mass concrete is also being considered (for example, see Patent Document 1). The construction management support system disclosed in Patent Document 1 performs a cooling water injection operation by pipe cooling into the target mass concrete structure. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-207430 A [Non-patent literature]

[0004] [Non-Patent Document 1] Architectural Institute of Japan, "Guidelines for Design and Construction of Thermal Crack Controlled Mass Concrete, Commentary and Explanation", 2nd Edition, Architectural Institute of Japan, November 2019 Summary of the Invention [Problem to be solved by the invention]

[0005] As described in Non-Patent Document 1, when managing cracks, concrete structures are extracted as several simple analysis models. However, it is time-consuming to carry out crack evaluation every time the construction section is changed. [Means for solving the problem]

[0006] A concrete evaluation system for solving the above problems includes a modeling information storage unit that records modeling data for components that constitute a structure, and a control unit connected to an interface unit. The control unit identifies a work area that is divided according to the construction work in the construction of the structure, obtains structural information of the concrete components included in the work area from the modeling information storage unit, identifies the construction time of the concrete components, and judges whether the construction can be performed according to the structural information and based on the environmental conditions at the construction time. Effect of the Invention

[0007] According to the present invention, the modeling data can be used to evaluate concrete. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is an explanatory diagram of a system according to an embodiment. [Diagram 2] FIG. 2 is an explanatory diagram of a hardware configuration of the embodiment. [Diagram 3] FIG. 2 is an explanatory diagram of a processing procedure according to an embodiment. [Figure 4] FIG. 2 is an explanatory diagram of a processing procedure according to an embodiment. [Diagram 5] FIG. 4 is an explanatory diagram of a display screen according to the embodiment. [Figure 6] FIG. 2 is a plan view of the structure of the embodiment. [Figure 7] FIG. 4 is an explanatory diagram of a display screen according to the embodiment. [Figure 8] FIG. 4 is an explanatory diagram of a display screen according to the embodiment. [Figure 9] FIG. 4 is an explanatory diagram of a display screen according to the embodiment. [Figure 10] FIG. 4 is an explanatory diagram of a display screen according to the embodiment. [Figure 11] FIG. 4 is an explanatory diagram of a display screen according to the embodiment. [Figure 12] 1A and 1B are explanatory diagrams of the reinforcement state of an embodiment, in which (a) is an explanatory diagram of a first work area range, and (b) is an explanatory diagram of a second work area range. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of a concrete evaluation system, a concrete evaluation method, and a concrete evaluation program will be described with reference to Fig. 1 to Fig. 12. In this embodiment, a concrete evaluation system for evaluating cracks in concrete in construction work will be described. Here, thermal cracks are assumed.

[0010] In this embodiment, as shown in FIG. 1, a design terminal 10, a management device 20, and a weather information site 30 are used, which are connected via a network. (Hardware configuration description) 2, the hardware configuration of the information processing device H10 that constitutes the design terminal 10, management device 20, and weather information site 30 will be described. The information processing device H10 includes a communication device H11, an input device H12, a display device H13, a storage device H14, and a processor H15. Note that this hardware configuration is an example, and it can also be realized by other hardware.

[0011] The communication device H11 is an interface that establishes a communication path with other devices and transmits and receives data, and is, for example, a network interface or a wireless interface.

[0012] The input device H12 is a device that accepts input of various information, such as a mouse, a keyboard, etc. The display device H13 is a display that displays various information, etc. In this embodiment, the input device H12 and the display device H13 function as an interface unit.

[0013] The storage device H14 stores data and various programs for executing various functions of the design terminal 10, the management device 20, and the weather information site 30. Examples of the storage device H14 include a ROM, a RAM, and a hard disk.

[0014] The processor H15 uses the programs and data stored in the storage device H14 to control each process in the design terminal 10, the management device 20, and the weather information site 30. Examples of the processor H15 include a CPU and an MPU. The processor H15 loads the programs stored in the ROM, etc., into the RAM and executes various processes for each process.

[0015] The processor H15 is not limited to a processor that performs software processing for all the processes it executes. For example, the processor H15 may include a dedicated hardware circuit (e.g., an application specific integrated circuit (ASIC)) that performs hardware processing for at least a part of the processes it executes. That is, the processor H15 may be configured as follows:

[0016] [1] One or more processors that operate according to a computer program (software). [2] One or more dedicated hardware circuits that perform at least some of the various processes [3] A circuit that includes a combination of these. The processor includes a CPU and memory, such as RAM and ROM, that stores program codes or instructions configured to cause the CPU to execute processes. Memory, i.e., computer-readable media, includes any available media that can be accessed by a general-purpose or special-purpose computer.

[0017] (System Configuration) Next, each function of the concrete evaluation system will be explained using FIG. The design terminal 10 is a computer terminal for designing a structure (three-dimensional CAD processing) using BIM (Building Information Modeling). In this embodiment, for example, "Autodesk Revit" (registered trademark) is used as the BIM application. In the BIM file (RVT file) generated by the BIM application, not only the shapes of elements (three-dimensional component data) used in construction but also the attributes (properties) of the building elements can be managed.

[0018] In this design terminal 10, a BIM file (modeling data) created by a BIM application is recorded. The management device 20 is a computer system that evaluates cracks in concrete. The management device 20 includes a control unit 21, a BIM information storage unit 22 (modeling information storage unit), a display information storage unit 23, an object information storage unit 24, a member management information storage unit 25, and an evaluation information storage unit 26.

[0019] The control unit 21 manages three-dimensional models for managing information related to components, and manages construction using the components. For this purpose, the control unit 21 functions as a common management unit 211, a data editing unit 212, and a construction management unit 213 by executing management programs for executing each stage (a common management stage, a data editing stage, and a construction management stage).

[0020] As shown in FIG. 3, in this embodiment, the control unit 21 generates a display file and an object file from a BIM file. The common management unit 211 realizes a CDE (Common Data Environment) by integrally managing data (such as 3D models) used in the construction of a building. For example, "Autodesk BIM360 Docs" (registered trademark) can be used for the common management unit 211. In this embodiment, it is used to convert a BIM file (RVT format) into a display file (SVF format).

[0021] The data editing unit 212 edits (changes or adjusts) the BIM file. For example, "Autodesk Design Automation API for Revit" (registered trademark) can be used for the data editing unit 212. In this embodiment, it is used to convert the BIM file (RVT format) into an object file (OBJ format) for each instance.

[0022] The construction management unit 213 manages the construction of materials used in building construction. The construction management unit 213 includes a viewer V1 equipped with an API for handling 3D models. For example, "Autodesk Forge" (registered trademark) can be used for this viewer V1.

[0023] As shown in Fig. 5, the viewer V1 incorporates a rendering function V11. For example, the rendering function V11 can use "Three.js." The viewer V1 runs on a graphics API such as WebGL to display the screen.

[0024] Here, a display file generated from a BIM file created by a BIM application is output by the viewer V1. Also, an object file generated from the BIM file is output by the viewer V1 via a rendering function V11.

[0025] Furthermore, the construction management unit 213 holds component information of a target for which an object file (OBJ format) is to be generated. In this embodiment, the target for application is a component constructed by pouring concrete at a construction site.

[0026] Furthermore, the construction management unit 213 holds win-lose condition information for determining a component type that has priority as a winning component type and a component type that has no priority as a losing component type when multiple elements interfere with each other in a three-dimensional space.

[0027] The BIM information storage unit 22 records BIM files (RVT format) created by a BIM application. This BIM file is recorded when a building is designed using 3D CAD. The BIM file includes a unique code, member type, element model, arrangement, and attributes for each member (element) in relation to the file code.

[0028] The file code information is an identifier for identifying a BIM file. This file code information makes it possible to identify the location of a construction site. The unique code information is an identifier for identifying the instances (elements) of components contained in this BIM file.

[0029] The component type information is information on the type of this component (such as "column", "beam", "window", etc.). The element model information is information about the three-dimensional model (BIM model) of this component. The placement information is information regarding the coordinates (XYZ) at which each element model is placed. The attribute information is attribute information of this element (such as specifications, dimensions, weight, material, etc.) In this embodiment, the attribute information is used to identify the concrete member to be poured at the site.

[0030] A display file is recorded in the display information storage unit 23. For example, this display file uses SVF (Streaming Vector Format). This allows for a reduction in memory usage by sharing and referencing geometry of equivalent shapes instead of having individual instances. Furthermore, a 3D display can be performed by a general-purpose application such as a browser. As shown in Fig. 3, this display file is recorded when a BIM file is converted into a display file in the common management unit 211. The display file includes a unique code, element model, arrangement, and attributes for each element (display model) for the file code.

[0031] The file code information is an identifier for identifying a display file. The unique code information is an identifier for identifying the elements (components) included in this display file. Here, the unique code of the elements included in the source BIM file is used.

[0032] The element model information is information about the 3D model (display model) of this component. Here, the same 3D shape as the element included in the source BIM file is used. The placement information is information about the coordinates (XYZ) of where each element model is placed. Here, the coordinates of the elements included in the source BIM file are used.

[0033] The attribute information is the attribute information of this element (specifications, dimensions, weight, material, reinforcement arrangement, etc.). Here, the attribute information included in the source BIM file is used. In this embodiment, the attribute information is used to identify the concrete members to be poured at the site.

[0034] 1 records an object file for each element to which the object is to be applied, in association with the element model included in the display file. For example, this object file uses a file format (OBJ format) for recording shape data of objects used in three-dimensional computer graphics. In this OBJ format, the coordinates of vertices that represent the shape of an element (model) in three-dimensional space, information on the faces that make up the object surface, parameters that represent curves and curved surfaces, etc. are written in text format. 3, this object file is recorded when the object file is generated from the BIM file in the data editing unit 212. In the object file, a file code, an element model as three-dimensional geometry information, and information on placement are recorded for each part (object model).

[0035] The file code information is an identifier for identifying an object file. The element model information is information about the 3D model (object model) of this component. Here, the same 3D shape as the element contained in the original BIM file is used. This 3D shape makes it possible to calculate the area and volume of the region occupied by the element model. The placement information is information about the coordinates (XYZ) of where each element model is placed. Here, the coordinates of the elements included in the source BIM file are used.

[0036] Component management data is recorded in the component management information storage unit 25. This component management data is recorded when an object file is generated from a BIM file in the data editing unit 212. The component management data records information on a file code, unique code, component type, box coordinates, and process code for each component.

[0037] The file code information is an identifier for the object file. The unique code information is a unique code in the display file of the component converted into the object file. The object file and the element model in the display file are linked by the file code and the unique code recorded in the component management data.

[0038] The component type information is information on the type of this component. The box coordinate information is the coordinates (bounding box coordinates) that indicate the bounding box that this component exists in. Here, the minimum and maximum values ​​of the X axis, the minimum and maximum values ​​of the Y axis, and the minimum and maximum values ​​of the Z axis of the component are recorded. The process code information is an identifier for identifying the process in which the component is handled. This code can be used to identify the actual status of construction work, such as the planned construction date and the construction execution date.

[0039] Concrete evaluation data is recorded in the evaluation information storage unit 26. This concrete evaluation data is recorded when the data editing unit 212 executes a work area division process for dividing areas into areas where concrete will be poured collectively. The concrete evaluation data records information on the area group name, target floor, and area coordinates for the work area range. In addition, information on the file code and unique code of the components included in the area coordinates is recorded. In addition, information on the position and evaluation of the mass concrete within the work area range is recorded.

[0040] The area group name information is information regarding the name of the work section in which one concrete pouring is performed. The target floor information is information that specifies the floor on which the concrete pouring is to be performed. The area coordinate information is information about the coordinates of the area of ​​the work area where the concrete will be poured. This area is specified by the vertices of a box space specified by its planar shape (corner shape) and height range. Note that an area group may be composed of multiple box spaces combined. The file code information and the unique code information are information relating to a file identifier and a unique identifier for identifying a member (object) belonging to an area group, respectively.

[0041] The position information for the mass concrete is information regarding the coordinates of a pour line specified for the mass concrete. The evaluation information is information on the calculation results (for example, maximum stress strength ratio, crack width) and judgment results for evaluating this mass concrete.

[0042] The weather information site 30 is a computer system that provides weather information for various locations. In this embodiment, the management device 20 acquires, from the weather information site 30, information on the outside air temperature in the area where the construction site is located as an environmental condition.

[0043] (Concrete Evaluation Treatment) The concrete evaluation process will be described with reference to Fig. 4. When evaluating cracks in concrete, the person in charge inputs an evaluation start command to the management device 20 using the input device H12.

[0044] In this case, the control unit 21 of the management device 20 executes a process for identifying the structure (step S11). Specifically, the construction management unit 213 of the control unit 21 outputs a target designation screen to the display device H13. This target designation screen includes a designation field for the structure to be the target of the work division. In this case, the person in charge identifies the file code of the desired BIM file in the BIM information storage unit 22.

[0045] Furthermore, the construction management unit 213 outputs the target floor designation screen to the display device H13. Then, when the construction management unit 213 identifies the target floor designated on the target floor designation screen, it acquires the designated file code and the BIM file of the target floor from the BIM information storage unit 22. Next, the common management unit 211 converts the BIM file (RVT format) into a display file (SVF format). Then, the common management unit 211 records the converted display file in the display information storage unit 23.

[0046] Next, the control unit 21 of the management device 20 executes a process of identifying a concrete member (step S12). Specifically, the data editing unit 212 of the control unit 21 identifies an element model of a concrete member by using attribute information of the BIM file of the element model constituting the identified structure. The data editing unit 212 generates an object file for each identified element (instance). In this object file, a file code and a unique code of the BIM file are recorded. Then, the data editing unit 212 records the generated object file in the object information storage unit 24. Next, the construction management unit 213 of the control unit 21 generates member management data for the element (instance) for which the object file was generated. The member management data includes a file code, a unique code, and a member type acquired from the BIM file for each element to which the data is applied. Furthermore, the construction management unit 213 identifies bounding box coordinates according to the arrangement of each element model, and records them in the member management data. Then, the construction management unit 213 records the generated member management data in the member management information storage unit 25. The construction management unit 213 also uses the bounding box coordinates to extract elements that may interfere with each other.The construction management unit 213 then uses the win / lose condition information to remove interfering parts from element models of the losing member type by Boolean operations.The construction management unit 213 also updates the member management file with the bounding box coordinates from which the interfering parts have been removed.

[0047] In this case, as shown in FIG. 5, the construction management unit 213 outputs a screen 500 to the display device H13 using a viewer V1 to display a three-dimensional model using element models of the concrete members of the target floor.

[0048] Next, the control unit 21 of the management device 20 executes a work area allocation setting process (step S13). Specifically, when an element model (object model) to be applied is recorded in the object information storage unit 24, the construction management unit 213 of the control unit 21 replaces the display model with the object model. As a result, the display model recorded in the display information storage unit 23 and the object model recorded in the object information storage unit 24 are displayed in a mixed manner.

[0049] Then, the construction management unit 213 of the control unit 21 uses the display model recorded in the display information storage unit 23 to output a plan view of the concrete member identified on the target floor to the display device H13.

[0050] Next, the person in charge uses the input device H12 to specify the desired work area range on the floor plan, and then specifies the height of the work area range. 6, a work area range 511 is specified on a screen 510 displayed on the display device H13. Furthermore, a height setting screen 512 is used to specify the height range of the work area.

[0051] 7, a plurality of work sections 521 to 528 are set in a three-dimensional model 520 by using a plan view and a height range. Note that a plurality of work sections can be integrated to form a larger grouped work section.

[0052] Here, when dividing one component into areas for pouring concrete based on the work area range, the construction management unit 213 divides the element model to generate two element models (object models). Then, the construction management unit 213 generates an object file for each divided element model and records it in the object information storage unit 24. In this case, a branch code indicating the division is set to the unique code of the original object model. Furthermore, the object file records the shapes and arrangements of the two divided element models. Next, the construction management unit 213 records component management data for the divided element models in the component management information storage unit 25. Furthermore, the construction management unit 213 records concrete evaluation data for the work area range in the evaluation information storage unit 26.

[0053] 8, when an area 531 obtained by grouping work sections 527 and 528 is specified on a screen 530, the element models of the concrete members included in the area 531 are divided. Then, the construction management unit 213 includes a quantity display 532 on the screen 530. This quantity display 532 includes information on the volume calculated from the dimensions of the attribute information recorded in the attribute information of the BIM file of the divided element models, and on the quantity required for pouring concrete.

[0054] Next, the control unit 21 of the management device 20 executes a mass concrete specification process (step S14). Specifically, the construction management unit 213 of the control unit 21 outputs a mass concrete specification screen to the display device H13. In this case, the person in charge specifies the mass concrete using the input device H12 on the mass concrete specification screen. Here, as shown in Fig. 9, on a mass concrete designation screen 540, a pouring line 541 is set for components that are considered to be mass concrete in the construction area. In this case, the construction management unit 213 specifies the coordinates of the pouring line 541. Then, the construction management unit 213 uses the BIM file to specify concrete components 542 that are along the pouring line 541. In this case, the construction management unit 213 records position information of the pouring line for the mass concrete in the evaluation information storage unit 26.

[0055] Next, the control unit 21 of the management device 20 executes a process of identifying the type of consideration (step S15). Specifically, the construction management unit 213 of the control unit 21 identifies the cross-sectional shape of the identified concrete member using the BIM file. Here, a plate-like member and a wall-like member are identified as the type of consideration.

[0056] Next, the control unit 21 of the management device 20 executes a process for setting a target value (step S16). Specifically, the construction management unit 213 of the control unit 21 outputs a target value setting screen to the display device H13. In this case, the person in charge sets a target value of the mass concrete on the target value setting screen using the input device H12.

[0057] 10, the target value setting screen 550 has setting fields for the stress intensity ratio and crack width, which are the target values. The construction management unit 213 temporarily stores the target values ​​set on the target value setting screen 550 in association with the work section.

[0058] Next, the control unit 21 of the management device 20 executes a process of specifying the concrete conditions (step S17). Specifically, the construction management unit 213 of the control unit 21 outputs a concrete condition editing screen.

[0059] As shown in Fig. 11, the concrete condition editing screen 560 is provided with a setting field for the concrete condition name. By setting the concrete condition name, the nominal strength, slump, maximum aggregate size, and cement type are determined. The concrete condition editing screen 560 is also provided with setting fields for the design standard strength, type, and pouring date. The construction management unit 213 then temporarily stores the concrete conditions set on the concrete condition editing screen 560 in association with the work area.

[0060] Next, the control unit 21 of the management device 20 executes a process of identifying constraint conditions (step S18). Specifically, when pouring concrete, the construction management unit 213 of the control unit 21 identifies an element model of a lower layer that has already been constructed, using the BIM information storage unit 22. Then, the construction management unit 213 identifies constraint conditions such as the ground based on the material of the element model of the lower layer according to the attribute information of the BIM file recorded in the BIM information storage unit 22.

[0061] Next, the control unit 21 of the management device 20 executes a calculation process of the stress intensity ratio according to the member shape (step S19). Specifically, the construction management unit 213 of the control unit 21 calculates the stress intensity ratio using the type of construction, concrete conditions, and constraint conditions (ground rigidity).

[0062] For the type under consideration (plate-like member), the maximum temperature rise is calculated using the maximum temperature rise estimation formula below.

[0063]

number

[0064] For the type under consideration (wall-shaped member), the maximum temperature rise is calculated using the maximum temperature rise estimation formula below.

[0065]

number

[0066] Then, for the type under consideration (plate-like member), the maximum temperature rise calculated using [Equation 1] is substituted into the stress intensity ratio estimation formula for the plate-like member below to calculate the maximum stress intensity ratio.

[0067]

number

[0068] For the type under consideration (wall-shaped member), the maximum temperature rise calculated using [Equation 2] is substituted into the stress intensity ratio estimation formula for the wall-shaped member below to calculate the maximum stress intensity ratio.

[0069]

number

[0070] Furthermore, the maximum stress intensity ratio is corrected according to the temperature and the linear expansion coefficient. Here, the following correction values ​​are used: "a correction value when the outside temperature and the casting temperature (reference temperature) differ," "a correction value when the outside temperature varies with the season," and "a correction value when the linear expansion coefficient differs from the standard value."

[0071] In this case, the construction management unit 213 acquires the outside air temperature using the location of the construction site and the construction date (construction time) from the weather information site 30. Next, the construction management unit 213 calculates a correction value using a correction value estimation formula when the outside air temperature and the pouring temperature (reference temperature) differ.

[0072] The following formula is used for the "correction value when the outside air temperature and the casting temperature differ." A predetermined reference temperature is used as the casting temperature.

[0073]

number

[0074] The following formula is used for the "correction value when the outdoor temperature varies seasonally."

[0075]

number

[0076] The following formula is used for the "correction value when the linear expansion coefficient differs from the standard value."

[0077]

number

[0078] The corrected stress intensity ratio is calculated by substituting the "stress intensity ratio" and the three correction values ​​into the following formula.

[0079]

number

[0080] Next, the crack width is calculated. Here, the reinforcement conditions of the concrete members may change depending on the specified work area.

[0081] For example, as shown in Fig. 12(a), it may be divided according to a first work area 610, or as shown in Fig. 12(b), it may be divided according to a second work area 620. The construction management unit 213 identifies the rebars included in each work area in the BIM file according to the respective work area, and calculates the rebar ratio from the cross-sectional area of ​​the rebar relative to the cross-sectional area of ​​the concrete member.

[0082] The crack width is calculated using the following formula:

[0083]

number

[0084] Next, the control unit 21 of the management device 20 executes a calculation result output process (step S20). Specifically, the construction management unit 213 of the control unit 21 outputs a judgment result as to whether construction is possible or not based on a comparison of the calculated maximum stress intensity ratio and crack width with the target values. Furthermore, the construction management unit 213 records the calculation results and judgment results of the mass concrete in the evaluation information storage unit 26. Here, if the maximum stress intensity ratio, crack width, or target value cannot be achieved and it is judged that construction is impossible, the person in charge considers construction of concrete members that will achieve the target values ​​by changing the scope of the work area, the type of concrete, reinforcement, etc.

[0085] According to this embodiment, the following effects can be obtained. (1) In this embodiment, a display file (SVF file) generated from a BIM file is recorded in the display information storage unit 23. Also, an object file is recorded in the object information storage unit 24 for each element to which the display file is applied, in association with the element model included in the display file. This allows a 3D display to be performed using a general-purpose application even if a BIM application is not installed on a terminal that displays a 3D model.

[0086] (2) In this embodiment, the object information storage unit 24 records an object file for each element to which the object is to be applied, in association with the element model included in the display file. This allows editing of objects (geometry operations such as division) that cannot be performed using the display model. Furthermore, the area and volume of the element model can be calculated using the object file.

[0087] (3) In this embodiment, the component management data is recorded in the component management information storage unit 25. This allows the object file to be associated with the element model in the display file by the file code and unique code recorded in the component management data. Then, construction management can be performed using the attribute information of each component.

[0088] (5) In this embodiment, the control unit 21 of the management device 20 executes a process for identifying the concrete member (step S12), thereby making it possible to identify evaluation targets such as stress strength ratio and cracks.

[0089] (6) In this embodiment, the control unit 21 of the management device 20 executes a work area allocation setting process (step S13). This allows for work area allocation that determines the pouring range on a target floor where concrete pouring is to be performed.

[0090] (7) In this embodiment, the control unit 21 of the management device 20 executes a process for identifying mass concrete (step S14). This makes it possible to identify mass concrete that is prone to cracking.

[0091] (8) In this embodiment, the control unit 21 of the management device 20 executes a process of identifying the type of crack to be examined (step S15). This makes it possible to evaluate cracks according to the shape of the concrete member.

[0092] (9) In this embodiment, the control unit 21 of the management device 20 executes a process of setting a target value (step S16), thereby making it possible to obtain an index for evaluating the concrete.

[0093] (10) In this embodiment, the control unit 21 of the management device 20 executes a process of identifying concrete conditions (step S17), thereby making it possible to acquire concrete conditions necessary for calculating the stress strength ratio.

[0094] (11) In this embodiment, the control unit 21 of the management device 20 executes a process of identifying the constraint body condition (step S18). This makes it possible to identify the constraint body condition required for calculating the stress intensity ratio by using the BIM file.

[0095] (12) In this embodiment, the control unit 21 of the management device 20 executes a calculation process of the stress strength ratio according to the shape of the member (step S19). This makes it possible to determine the condition of the concrete member, taking into account the outside temperature on the day of construction and the condition of the rebars included in the work area. Work area division is often determined based on the limit on the amount of concrete that can be poured in a day. Here, if a large amount of concrete is poured in a day, cracks are more likely to occur. Therefore, it is possible to determine the condition of the concrete member and find the appropriate pouring amount.

[0096] This embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other to the extent that there is no technical contradiction. In the above embodiment, BIM information is used as modeling data in the construction work of a building. The application of this embodiment is not limited to construction work. That is, the BIM of this embodiment is a technology including CIM (Construction Information Modeling) used in construction design of civil engineering, etc. In the above embodiment, the cracks are assumed to be thermal cracks, but are not limited to this. For example, the present invention may be applied to drying shrinkage cracks that occur when a volume change in a concrete member caused by drying shrinkage is restrained by a restraining body. In the above embodiment, information regarding the outside temperature of the area where the construction site is located is obtained from the weather information site 30. The method of obtaining weather information is not limited to using the weather information site 30. For example, weather information prepared by the person in charge may be input. In the above embodiment, the calculations are performed using the estimation formulas (1) to (7), but the calculation method is not limited to these. For example, FEM analysis may be performed. In the above embodiment, the management device 20 acquires information on the outside air temperature of the area where the construction site is located as the environmental condition from the weather information site 30. The environmental condition is not limited to temperature. For example, when evaluating drying shrinkage cracks, humidity may be taken into consideration.

[0097] In the above embodiment, the control unit 21 of the management device 20 executes a process for identifying mass concrete (step S14). Here, the input device H12 is used to specify mass concrete on the mass concrete specification screen. Alternatively, the management device 20 may specify mass concrete. In this case, concrete members having a size equal to or larger than a cross-sectional dimension specified in advance are specified as mass concrete. Here, the cross-sectional dimension specified in advance is the approximate dimension of mass concrete shown in Non-Patent Document 1 or a dimension presented by a designer (for example, a dimension shown in a design drawing). In addition, the concrete members included in the construction area may be individually identified as mass concrete and evaluated.

[0098] In the above embodiment, the control unit 21 of the management device 20 executes the process of setting the target value (step S16) and the process of specifying the concrete conditions (step S17). Alternatively, the target value and the concrete conditions may be set in advance. Also, the construction date may be obtained from the construction plan or BIM file of the structure.

[0099] Next, the technical ideas that can be understood from the above embodiment and other examples will be described below. The concrete evaluation system according to claim 1, characterized in that (a) the control unit identifies the concrete member by using attribute information recorded in the modeling data.

[0100] (b) The concrete evaluation system according to claim 1 or (a), characterized in that the control unit specifies, as the structural information, a reinforcement condition according to a pouring height. (c) The concrete evaluation system according to claim 1, (a) or (b), characterized in that the control unit calculates a stress-strength ratio when determining whether or not the construction can be carried out.

[0101] (d) The concrete evaluation system according to any one of (a) to (c) above, characterized in that the control unit calculates a crack width when determining whether or not the construction is possible. (e) A concrete evaluation system according to any one of (a) to (d) of claim 1, characterized in that the control unit identifies an outside air temperature as the environmental condition during the construction period and corrects the stress-strength ratio. [Explanation of symbols]

[0102] 10...design terminal, 11...memory unit, 20...management device, 21...control unit, 211...common management unit, 212...data editing unit, 213...construction management unit, 22...BIM information memory unit, 23...display information memory unit, 24...object information memory unit, 25...component management information memory unit, 26...evaluation information memory unit.

Claims

1. a modeling information storage unit that records modeling data for members that constitute a structure; A concrete evaluation system comprising: The control unit: Identifying a work area range divided according to the construction work in the construction work of the structure, acquiring structural information of concrete members included in the work area from the modeling information storage unit; A concrete evaluation system characterized by identifying a construction time of the concrete member, and judging whether or not the construction is possible based on the environmental conditions at the construction time and in accordance with the structural information.

2. a modeling information storage unit that records modeling data for members that constitute a structure; A method for managing a work section using a concrete evaluation system including a control unit connected to an interface unit, The control unit: Identifying a work area range divided according to the construction work in the construction work of the structure, acquiring structural information of concrete members included in the work area from the modeling information storage unit; A concrete evaluation method comprising: identifying a construction time of the concrete member; and judging whether or not the construction is possible based on the environmental conditions at the construction time and in accordance with the structural information.

3. a modeling information storage unit that records modeling data for members that constitute a structure; A program for managing a work area using a concrete evaluation system including a control unit connected to an interface unit, The control unit, Identifying a work area range divided according to the construction work in the construction work of the structure, acquiring structural information of concrete members included in the work area from the modeling information storage unit; A concrete evaluation program characterized by functioning as a means for identifying the construction time of the concrete member, and determining whether or not the construction is possible based on the environmental conditions at the construction time and in accordance with the structural information.

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