Structure design support method, structure design support program and structure design support device

Abstract

To provide a structure design support method that can simplify the work of designers to design civil engineering structures using three-dimensional models.SOLUTION: A structure design support method includes: a model acquisition step of acquiring a structure model representing the three-dimensional shape of a civil engineering structure; a framework data creation step of creating structure framework data based on the structure model; a rebar distribution data creation step of creating rebar distribution data representing the arrangement of rebars to be placed in the civil engineering structure; a structural analysis step of performing a structural analysis of the structure model based on the structure framework data and the rebar distribution data; a performance verification step of verifying whether the structure model satisfies required performance based on the analysis results; a structure model modification step in which, if it cannot be confirmed that the required performance is met, the structure model is to be modified and returned to the framework data creation step assuming that the modified structure model has been obtained; and a model output step of outputting the confirmed structure model.SELECTED DRAWING: Figure 17

Description

[Technical field]

[0001] The present invention relates to a structure design support method, a structure design support program, and a structure design support device. [Background technology]

[0002] In recent years, the introduction of 3D models that represent the 3D shapes of civil engineering structures such as railways and roads has been promoted as data handled in a series of operations such as investigation, planning, design, ordering, construction, and maintenance management of civil engineering structures (see, for example, Patent Document 1). Also, in order to confirm that the civil engineering structures designed by designers meet the required performance such as safety and earthquake resistance, structural analysis is performed on the design values ​​of the civil engineering structures (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-021983 [Patent Document 2] JP 2017-119946 A Summary of the Invention [Problem to be solved by the invention]

[0004] Even if 3D models are introduced into the design of civil engineering structures, if the 3D models cannot be used to perform structural analysis of the civil engineering structures, designers will need to separately create data and drawings for the structural analysis, which means that workability will not improve.

[0005] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a structure design support method, a structure design support program, and a structure design support device that can simplify the work of designers when designing civil engineering structures using 3D models. [Means for solving the problem]

[0006] In order to achieve the above object, a structure design support method according to one aspect of the present invention includes: A method for supporting design of a railway-related civil engineering structure, the structure being composed of a plurality of members of a plurality of types, using a computer, comprising: a model acquisition step of acquiring a structure model representing a three-dimensional shape of the civil engineering structure, the structure model being composed of a plurality of member models of a plurality of types each representing a three-dimensional shape of a plurality of the members; a framework data creation step of creating structure framework data relating to a framework of the civil engineering structure based on the structure model acquired in the model acquisition step; a reinforcement data creation process for creating reinforcement data representing an arrangement state of reinforcing bars in a cross section of the member as an arrangement state of reinforcing bars arranged in the civil engineering structure represented by the structure model acquired in the model acquisition process; a structural analysis step of performing a structural analysis of the structure model based on the structure framework data created in the framework data creation step and the reinforcement data created in the reinforcement data creation step; a performance verification step of verifying whether or not the structure model satisfies the required performance of the civil engineering structure based on the analysis result of the structural analysis step; a structure model correction step of correcting the structure model when it cannot be confirmed in the performance verification step that the structure model satisfies the required performance, and returning to the framework data creation step as the corrected structure model obtained in the model acquisition step; and a model output process for outputting the confirmed structure model when it is confirmed in the performance verification process that the structure model satisfies the required performance. Effect of the Invention

[0007] According to the structure design support method according to one aspect of the present invention, it is possible to simplify the work of a designer when designing a civil engineering structure using a three-dimensional model.

[0008] Other objects, configurations and effects will become apparent from the detailed description of the invention described below. [Brief description of the drawings]

[0009] [Figure 1] 1 is an overall view showing an example of a structure design support system 1 and a civil engineering structure 5. FIG. [Diagram 2] 1 is a schematic side view showing an example of a rigid-frame viaduct 5A. FIG. [Diagram 3] 1 is a schematic side view showing an example of a simple girder bridge 5B. [Figure 4] A schematic side view showing an example of a mountain tunnel 5C. [Diagram 5] FIG. 13 is a schematic side view showing an example of a shield tunnel 5D. [Figure 6] A schematic side view showing an example of an underground structure 5E. [Figure 7] 2 is a data configuration diagram showing an example of structure management data 41 managed in a database 40. FIG. [Figure 8] FIG. 4 is a schematic diagram showing an example of wiring data. [Figure 9] FIG. 2 is a schematic diagram showing an example of topographical data. [Figure 10] 1 is a schematic diagram showing an example of a structural model 50A of a rigid-frame viaduct 5A. FIG. [Figure 11] 1 is a schematic diagram showing an example of a structure model 50B of a simple girder bridge 5B. [Figure 12] 1 is a schematic diagram showing an example of a structure model 50C of a mountain tunnel 5C. [Figure 13] 1 is a schematic diagram showing an example of a structure model 50D of a shield tunnel 5D. FIG. [Figure 14] 1 is a schematic diagram showing an example of a structure model 50E of an underground structure 5E. [Figure 15] FIG. 2 is a schematic diagram showing an example of a reinforcement model 56. [Figure 16] FIG. 2 is a block diagram showing an example of a structure design support device 2. [Figure 17] 4 is a flowchart showing a first operation of the structure design support device 2. [Figure 18] 13 is a flowchart showing a second operation of the design support device 2. [Figure 19] FIG. 2 is a schematic diagram showing an example of structure framework data. [Figure 20] FIG. 2 is a schematic diagram showing an example of reinforcement data. [Figure 21] 10 is a schematic diagram illustrating a method for correcting a structure model 50. FIG. [Figure 22] 1 is a diagram showing an example of a model display screen 11A that displays a structure model 50. FIG. [Diagram 23] FIG. 11 is a diagram showing an example of a model display screen 11B on which a structure model 50 and a reinforcement model 56 are displayed in an overlapping manner. [Figure 24] FIG. 2 is a diagram showing an example of a two-dimensional drawing display screen 12. [Diagram 25] FIG. 13 is a diagram showing an example of a reinforcement drawing display screen 13. [Figure 26] FIG. 13 is a diagram showing an example of a quantity summary table display screen 14. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment for carrying out the present invention will be described with reference to the drawings. In the following, the scope necessary for the explanation to achieve the object of the present invention will be shown in a schematic manner, and the scope necessary for the explanation of the relevant part of the present invention will be mainly explained, and the parts that are omitted from the explanation will be based on the publicly known technology.

[0011] (Configuration of Structural Design Support System 1) FIG. 1 is an overall view showing an example of a structure design support system 1 and a civil engineering structure 5. FIG. 2 is a schematic side view showing an example of a rigid-frame viaduct 5A. FIG. 3 is a schematic side view showing an example of a simple girder bridge 5B. FIG. 4 is a schematic side view showing an example of a mountain tunnel 5C. FIG. 5 is a schematic side view showing an example of a shield tunnel 5D. FIG. 6 is a schematic side view showing an example of an underground structure 5E.

[0012] The structure design support system 1 functions as a system for supporting each stage (survey / planning, design, ordering, construction, maintenance) of the life cycle of a civil engineering structure 5 that supports a railway track along a track centerline 100 that indicates the centerline of the track.

[0013] The civil engineering structure 5 is installed according to the conditions of the ground surface 60, the supporting layer 61, and the existing buried objects 62 at the construction site 6. The civil engineering structure 5 is composed of a plurality of members 51 of a plurality of types in order to support one or a plurality of tracks, i.e., a single-track or double-track track. The civil engineering structure 5 is classified into a plurality of structural types of civil engineering structures 5 (see Figs. 2 to 6). The structural types of the civil engineering structures 5 include, for example, viaducts, bridges, embankments, tunnels, underground structures 5E, foundations, etc., but are not limited to these. Note that the foundation is a structural type used in combination with other structural types such as viaducts, bridges, tunnels, and underground structures 5E.

[0014] The civil engineering structures 5 are classified into a plurality of structural types according to the structural type of the civil engineering structures 5. The structural types of viaducts include, for example, rigid frame viaducts 5A (see FIG. 2), girder-type viaducts, continuous arch viaducts, etc., but are not limited thereto. The structural types of bridges include, for example, simple girder bridges 5B (see FIG. 3), continuous girder bridges, rigid frame bridges, cable-stayed bridges, arch bridges, suspension bridges, etc., but are not limited thereto. The structural types of embankments include, for example, reinforced embankments, retaining wall embankments, etc., but are not limited thereto. The structural types of tunnels include, for example, mountain tunnels 5C (see FIG. 4), shield tunnels 5D (see FIG. 5), cut-and-cover tunnels, etc., but are not limited thereto. The structural types of underground structures 5E (see FIG. 6) may be classified into a plurality of structural types, although not particularly exemplified. The structural types of foundations include, for example, spread foundations, pile foundations, caisson foundations, steel pipe sheet pile well foundations, continuous well foundations, etc., but are not limited thereto.

[0015] The civil engineering structure 5 is composed of a plurality of types of members 51. The plurality of types of members 51 are composed corresponding to the structural types of the civil engineering structure 5 and the structural forms of the civil engineering structure 5 determined for each structural type of the civil engineering structure 5, respectively.

[0016] The types of members 51 constituting the viaduct are broadly classified into superstructure and substructure. The types of superstructure include, for example, slab (floor slab) 52A, vertical beams 52B, cross beams 52C, mid-level beams, and parapet 52D. The types of substructure include, for example, columns 52E, 52F, piles 52G, steel pipes 52H, underground beams, footings, caisson foundations, and pile supports. The types of members 51 constituting the rigid-frame viaduct 5A include, for example, slab 52A, vertical beams 52B, cross beams 52C, parapet 52D, columns 52E, 52F, piles 52G, steel pipes 52H, and the like, as shown in FIG. 2.

[0017] The types of members 51 constituting a bridge are broadly classified into superstructure and substructure. The types of superstructure include, for example, slabs, longitudinal beams, cross beams, main girders 53A, arches, trusses, towers, suspension members, cables, etc. The types of substructure include, for example, abutment bodies 53B, abutment foundations 53C, pier bodies 53D, pier foundations 53E, piles, caisson foundations, etc. The types of members 51 constituting a simple girder bridge 5B include, for example, main girders 53A, abutment bodies 53B, abutment foundations 53C, pier bodies 53D, pier foundations 53E, etc., as shown in FIG. 3.

[0018] The types of members 51 constituting the tunnel include, for example, an arch 54A, a side wall 54B, an invert 54C, a deformed steel bar, a twisted steel bar, an A segment 54F, a B segment 54G, and a K segment 54H. The types of members 51 constituting the mountain tunnel 5C include, for example, an arch 54A, a side wall 54B, an invert 54C, a deformed steel bar, a twisted steel bar, and the like, as shown in FIG. 4. Note that, in the mountain tunnel 5C shown in FIG. 4, illustration of the deformed steel bar and the twisted steel bar is omitted, but in the support pattern A, a total of four deformed steel bars are installed on the side wall 54B, in the support pattern B, a total of two twisted steel bars are installed on the arch 54A and a total of six deformed steel bars are installed on the side wall 54B, and in the support pattern C, a total of six twisted steel bars are installed on the arch 54A and a total of six deformed steel bars are installed on the side wall 54B. As shown in FIG. 5, the types of members 51 constituting the shield tunnel 5D include, for example, an A segment 54F, a B segment 54G, and a K segment 54H.

[0019] As shown in FIG. 6, types of members 51 constituting an underground structure 5E include, for example, an upper deck 55A, a side wall 55B, a lower deck 55C, and piles 55D.

[0020] In this embodiment, the civil engineering structure 5 will be described mainly in the case where it is a civil engineering structure supporting a railway track as described above, but the civil engineering structure 5 handled by the structure design support system 1 (each of the devices 2 to 4 described below) is not limited to the above example and may be any civil engineering structure related to a railway. In addition to the above examples, examples of the civil engineering structure 5 related to a railway include station buildings, platforms, slopes, underpasses, etc. Furthermore, the type of member 51 is not limited to the above example and may be specified according to, for example, the structural type, structural form, construction method, etc. of the civil engineering structure 5.

[0021] The main components of the structure design support system 1 include a structure design support device 2 used by a designer who designs the civil engineering structure 5 (5A to 5E), a worker terminal device 3 used by a worker or manager who performs research, planning, design, ordering, construction, maintenance, etc. related to the civil engineering structure 5, and a database device 4 that stores various data related to the civil engineering structure 5. Each of the devices 2 to 4 is, for example, configured as a general-purpose or dedicated computer, and is connected to a wired or wireless network 10 so as to be able to transmit and receive various data to and from each other. Note that the number of the devices 2 to 4 and the configuration of the network 10 are not limited to the example in FIG. 1.

[0022] The structure design support device 2 is composed of, for example, a desktop computer or a portable computer. Programs such as applications and browsers are installed in the structure design support device 2, and the structure design support device 2 accepts various input operations and outputs various information via a display screen or voice. The structure design support device 2 also transmits and receives various data to and from a database device 4, and supports work related to the design of the civil engineering structure 5 by, for example, displaying various data related to the civil engineering structure 5 on a display screen, accepting input operations on the display screen, registering new data in the database device 4, or correcting registered data.

[0023] The worker terminal device 3 is composed of, for example, a stationary computer or a portable computer. Programs such as applications and browsers are installed in the worker terminal device 3, and the worker terminal device 3 accepts various input operations and outputs various information via a display screen or voice. For example, the worker terminal device 3 transmits and receives various data to and from the database device 4, displays the contents of various data related to the civil engineering structure 5 on the display screen, accepts various input operations on the display screen, registers new data in the database device 4, and modifies registered data, thereby supporting work related to the survey, planning, ordering, construction, maintenance, and management of the civil engineering structure 5.

[0024] The database device 4 is configured, for example, by a server-type computer or a cloud-type computer. The database device 4 includes a database 40 that manages structure management data 41 related to the design of a civil engineering structure 5 for each construction site 6. As shown in Fig. 1, the database device 4 may be shared throughout the entire life cycle, or a dedicated database device 4 may be prepared for each stage of the life cycle.

[0025] Fig. 7 is a data configuration diagram showing an example of structure management data 41 managed in database 40. The structure management data 41 includes wiring data, topographical data, design conditions, structure model 50, reinforcement model 56, two-dimensional drawings, reinforcement drawings, quantity summary tables, etc. The database 40 shown in Fig. 7 illustrates a case in which structure management data 41 for structures A, B, ..., N is registered.

[0026] 8 is a schematic diagram showing an example of wiring data. The wiring data is data in which a track center line 100 indicating the center line of a track installed at the construction site 6 is recorded as three-dimensional data. The wiring data may be created in the investigation and planning stage, for example, by a program other than the structure design support program 210 described later, or may be created as a part of the function of the structure design support program 210.

[0027] Fig. 9 is a schematic diagram showing an example of topographical data. The topographical data is data in which the ground surface 60 and the supporting layer 61 at the construction site 6 are recorded as three-dimensional data. The topographical data of the ground surface 60 is created based on the measurement results, for example, by measuring the height of the ground surface 60 from the sky using a measuring device capable of measuring the height as a point cloud, during the investigation and planning stage. The topographical data of the supporting layer 61 is created based on the investigation results, for example, by conducting a boring investigation at multiple points during the investigation and planning stage.

[0028] The topographical data may include information (position, size, material, etc.) about the buried object 62 buried in the ground. The buried object 62 includes, but is not limited to, for example, a water pipe, a gas pipe, a subway, an underground road, an underground building, etc. In this case, the buried object 62 may be partially installed above ground. The topographical data may also include information about the strength of the support layer 61.

[0029] The design conditions include design conditions for the civil engineering structure 5, design conditions for the members 51, and design conditions for reinforcing bars (reinforcing bar arrangement conditions). As the design conditions for the civil engineering structure 5, structure design values ​​for a plurality of structure design items (structural type, structural form, starting point, etc.) that define the three-dimensional shape of the civil engineering structure 5 are set. As the design conditions for the members 51, member design values ​​for a plurality of member design items (shape, dimensions, material, etc.) that define the three-dimensional shape of the members 51 for each type of member 51 are set. As the design conditions for reinforcing bars, reinforcing bar design values ​​for a plurality of reinforcing bar design items (number, pitch, name (diameter), type (main bar, hoop), material, etc.) that define the three-dimensional arrangement of reinforcing bars for each type of member 51 are set. In this embodiment, the design conditions for the civil engineering structure 5, the members 51, and the reinforcing bars will be described later mainly focusing on conditions related to the three-dimensional shape, but may also include, for example, characteristic values ​​of the load when a train is running, characteristic values ​​related to the environment such as temperature, and materials of concrete, metal, and composite members.

[0030] The structure model 50 is composed of multiple component models 510 of multiple types, and is data representing the three-dimensional shape of the civil engineering structure 5. The multiple component models 510 of multiple types are data created corresponding to the structural types of the civil engineering structure 5 and the structural forms of the civil engineering structure 5 determined for each structural type of the civil engineering structure 5, and each of the component models 510 is data representing the three-dimensional shape of a component 51.

[0031] The structure model 50 and the component model 510 are data whose three-dimensional shapes can be displayed at any viewpoint, magnification, transparency, and display color, and are configured as data that can be converted into any outline drawing, cross-sectional drawing, etc. The structure model 50 and the component model 510 are data created by the structure design support device 2, and any data format can be adopted. As the data format of the structure model 50 and the component model 510, for example, a data format called a BIM (Building Information Modeling) model can be adopted.

[0032] Fig. 10 is a schematic diagram showing an example of a structure model 50A of a rigid-frame viaduct 5A. The structure model 50A shown in Fig. 10 is created when the rigid-frame viaduct 5A shown in Fig. 2 is adopted as the structural form of the viaduct. Therefore, the structure model 50A is composed of a slab model 520A, a vertical beam model 520B, a horizontal beam model 520C, a balustrade model 520D, a column model 520E, 520F, a pile model 520G, and a root-wrapped steel pipe model 520H, corresponding to each member 51 (slab 52A, vertical beam 52B, horizontal beam 52C, balustrade model 52D, column models 520E, 520F, pile model 520G, and root-wrapped steel pipe model 520H, as shown in Fig. 10. In addition, Figure 10 illustrates component design values ​​for component design items when the types of components 51 are columns 52E, 52F and piles 52G, but component design values ​​for component design items are similarly set for other types of components 51.

[0033] FIG. 11 is a schematic diagram showing an example of a structure model 50B of a simple girder bridge 5B. The structure model 50B shown in FIG. 11 is created when the simple girder bridge 5B shown in FIG. 3 is adopted as the structural type of the bridge. Therefore, the structure model 50B is composed of a main girder model 530A, an abutment body model 530B, an abutment foundation model 530C, a pier body model 530D, and a pier foundation model 530E, as shown in FIG. 11, corresponding to each member 51 (main girder 53A, abutment body 53B, abutment foundation 53C, pier body 53D, and pier foundation 53E) constituting the simple girder bridge 5B. Note that FIG. 11 illustrates member design values ​​for member design items when the type of member 51 is the abutment body 53B and the pier body 53D, but member design values ​​for member design items are set similarly for other types of members 51.

[0034] FIG. 12 is a schematic diagram showing an example of a structure model 50C of a mountain tunnel 5C. The structure model 50C shown in FIG. 12 is created when the mountain tunnel 5C shown in FIG. 4 is adopted as the structural form of the tunnel. Therefore, the structure model 50C is composed of an arch model 540A, a side wall model 540B, an invert model 540C, and a deformed steel bar model 540D, as shown in FIG. 12, in correspondence with each member 51 (arch 54A, side wall 54B, invert 54C, deformed steel bar) constituting the mountain tunnel 5C. Note that FIG. 12 illustrates member design values ​​for member design items when the type of member 51 is the arch 54A and the side wall 54B, but member design values ​​for member design items are set similarly for other types of members 51.

[0035] FIG. 13 is a schematic diagram showing an example of a structure model 50D of a shield tunnel 5D. The structure model 50D shown in FIG. 13 is created when the shield tunnel 5D shown in FIG. 5 is adopted as the structural form of the tunnel. Therefore, the structure model 50D is composed of an A-segment model 540F, a B-segment model 540G, and a K-segment model 540H, as shown in FIG. 13, corresponding to each member 51 (A-segment 54F, B-segment 54G, K-segment 54H) constituting the shield tunnel 5D. Note that FIG. 13 illustrates member design values ​​for member design items when the types of members 51 are A-segment 54F and B-segment 54G, but member design values ​​for member design items are set similarly for other types of members 51.

[0036] FIG. 14 is a schematic diagram showing an example of a structure model 50E of an underground structure 5E. The structure model 50E shown in FIG. 14 is created when the underground structure 5E shown in FIG. 6 is adopted as the structure type of the civil engineering structure 5. Therefore, it is composed of an upper deck model 550A, a side wall model 550B, a lower deck model 550C, and a pile model 550D corresponding to each member 51 (upper deck 55A, side wall 55B, lower deck 55C, pile 55D) constituting the underground structure 5E. Note that FIG. 14 illustrates member design values ​​for member design items when the types of members 51 are upper deck 55A and pile 55D, but member design values ​​for member design items are set similarly for other types of members 51.

[0037] FIG. 15 is a schematic diagram showing an example of the reinforcement model 56. The reinforcement model 56 is data representing the three-dimensional shape of reinforcing bars arranged in the civil engineering structure 5. The reinforcement model 56 is composed of a plurality of reinforcing bar models 560 corresponding to the reinforcing bars arranged in the civil engineering structure 5. The reinforcement model 56 and the reinforcing bar model 560 are data that can display the three-dimensional shape at any viewpoint, magnification, transparency, and display color, similar to the structure model 50 and the member model 510, and are composed as data that can be converted into any outline drawing, cross-sectional drawing, or the like. Similarly to the structure model 50 and the member model 510, the reinforcement model 56 and the reinforcing bar model 560 are data created by the structure design support device 2, and a data format called BIM, for example, is adopted.

[0038] The two-dimensional drawing is data representing an outline drawing or a cross-sectional drawing of the civil engineering structure 5 or the member 51. The two-dimensional drawing is created by the structure design support device 2 based on the structure model 50 and the member model 510.

[0039] The reinforcing bar drawing is data showing an outline drawing or a cross-sectional drawing of reinforcing bars arranged in the civil engineering structure 5. The reinforcing bar drawing is created by the structure design support device 2 based on the reinforcing bar model 56.

[0040] The quantity summary table is data that summarizes the quantities of the members 51 or the reinforcing bars by type. The quantity summary table is created by the structure design support device 2 based on the structure model 50, the member model 510, and the reinforcement model 56.

[0041] Each data constituting the structure management data 41 may be referenced by the structure design support device 2 and the worker terminal device 3 and displayed on a display screen of the structure design support device 2 and the worker terminal device 3, or may be transmitted and received between the structure design support device 2 and the worker terminal device 3. In this case, each data of the structure management data 41 may be edited or printed according to the permission authority given to the designer or worker. Furthermore, each data of the structure management data 41 may be subject to version management, for example, so that the structure model 50 and component model 510 before and after editing may be included in the structure management data 41.

[0042] In addition, the data configuration of the structure management data 41 is not limited to the above example and may be changed as appropriate, some of the above data may be omitted, and data other than the above may be added. For example, various work records performed in ordering, construction, maintenance, etc. may be associated with the structure management data 41.

[0043] (Configuration of structural design support device 2) 16 is a block diagram showing an example of a structure design support device 2. The structure design support device 2 includes a control unit 20 configured with a processor such as a CPU or an MPU, a storage unit 21 configured with an HDD, an SSD, a memory, etc., a communication unit 22 which is a communication interface with the network 10, an input unit 23 configured with a keyboard, a mouse, etc., and an output unit 24 configured with a display, etc.

[0044] The storage unit 21 stores the structure design support program 210, as well as an operating system, a browser, other programs, various data, etc. The structure management data 41 may be stored in the storage unit 21 instead of the database 40 of the database device 4.

[0045] The control unit 20 executes the structure design support program 210 stored in the memory unit 21, and thereby functions as a structure model creation unit 200, a model acquisition unit 201, a framework data creation unit 202A, a reinforcement data creation unit 202B, a structural analysis unit 203, a performance verification unit 204, a reinforcement data correction unit 205A, a structure model correction unit 205B, a reinforcement model creation unit 206, a model output unit 207, a 2D drawing creation unit 208A, a reinforcement drawing creation unit 208B, and a quantity summary table creation unit 209.

[0046] Each of the parts 200 to 209 of the control unit 20 causes the output unit 24 to display various display screens, and receives various input operations on the display screens via the input unit 23 to operate.

[0047] (Structure design support method) The following describes a series of operations (structure design support method) performed by the structure design support device 2. The series of operations is performed by each unit of the structure design support device 2 (each step of the structure design support method executed by the structure design support program 210).

[0048] Fig. 17 is a flowchart showing a first operation of the structure design support device 2. Fig. 18 is a flowchart showing a second operation of the structure design support device 2. Common steps are assigned common step numbers in Fig. 17 and Fig. 18. The following describes the operation when a designer issues an instruction to execute a structure design support program 210 via the input unit 23 of the structure design support device 2, and the control unit 20 of the structure design support device 2 supports the design of a civil engineering structure 5 to be designed (in this embodiment, a rigid frame viaduct 5A with a two-line three-column, split-back column and pile foundation (see Figs. 2 and 10)).

[0049] The first operation shown in FIG. 17 is an example of an operation in which the structure model 50 and the reinforcement model 56 have not been created at the start of the operation, and the structure model 50 and the reinforcement model 56 are newly created from an initial stage. The second operation shown in FIG. 18 is an example of an operation in which the structure model 50 and the reinforcement model 56 have been created at the start of the operation, and the created structure model 50 and the reinforcement model 56 are modified to create the final structure model 50 and the reinforcement model 56. Note that the first operation and the second operation may be performed independently, or the second operation may be performed after the first operation. For example, the second operation may be performed to further modify the structure model 50 and the reinforcement model 56 created by the first operation.

[0050] (First Action) In the first operation shown in FIG. 17, first, in step S10 (structure model creation step), the structure model creation unit 200 creates a structure model 50 of the civil engineering structure 5 to be designed.

[0051] Specifically, the structure model creation unit 200 receives wiring data (see FIG. 8) and topographical data (see FIG. 9) for the construction site 6 where the civil engineering structure 5 is to be constructed, and registers them in the database 40. In addition, the structure model creation unit 200 receives design conditions for the civil engineering structure 5 and members 51, for example, via the worker terminal device 3, and registers them in the database 40.

[0052] Then, the structure model creation unit 200 creates a structure model 50 based on the design conditions of the civil engineering structure 5 and the components 51 by placing multiple types of component models 510 on the ground surface 60 and supporting layer 61 recorded in the topographical data, based on the track center line 100 recorded in the wiring data, and registers the structure model 50 in the database 40. At this time, the structure model creation unit 200 determines the number of each component model 510 (specifically, slab model 520A, vertical beam model 520B, horizontal beam model 520C, parapet model 520D, column models 520E, 520F, pile model 520G, and root-wrapped steel pipe model 520H) to be arranged, and creates the structure model 50 by determining component design values ​​for component design items (for example, ``column height'' for column models 520E, 520F, ``pile length'' for pile model 520G) for each component model 510 based on the positional relationship between the component model 510 and the track center line 100, the ground surface 60, and the supporting layer 61.

[0053] In step S11 (structure model acquisition step), the model acquisition unit 201 acquires the structure model 50 representing the three-dimensional shape of the civil engineering structure 5 to be designed. For example, the model acquisition unit 201 acquires the structure model 50 by reading out the structure model 50 created in step S10 from the database 40. Note that the method of acquiring the structure model 50 is not limited to the above example. For example, the model acquisition unit 201 may acquire the structure model 50 by reading out the structure model 50 from the reference database 40 when the reference destination of the database 40 is specified by the designer on a display screen on which a file name or the like can be specified.

[0054] In step S20 (framework data creation step), the frame data creation unit 202A creates structure frame data related to the frame of the civil engineering structure 5 to be designed, based on the structure model 50 acquired in step S10. For example, the frame data creation unit 202A creates structure frame data by extracting characteristic parts (corners, corners, center of gravity, etc.) of the member models 510 constituting the structure model 50 and boundary parts between the member models 510 and defining them as nodes, and defining line segments connecting the contact points as elements. In addition, the frame data creation unit 202A identifies the section constant, physical property values, and ground spring coefficient of the member 51, and the load conditions acting on the civil engineering structure 5, based on the structure design values ​​for the structure design items in the structure model 50 and the member design values ​​for the member design items in each member model 510, and records them in the structure frame data. The load conditions include, for example, live load (load when a train passes), dead load (the weight of the civil engineering structure 5), wind load, and other load values, load cases, and load combinations.

[0055] 19 is a schematic diagram showing an example of structure framework data. The structure framework data is data in which a plurality of nodes arranged at characteristic parts (corners, corners, center of gravity, etc.) of members 51 constituting a civil engineering structure 5 and at boundaries between members 51, and a plurality of elements connecting the contact points are recorded in a predetermined coordinate system. The structure framework data further records the section constants and physical properties of members 51, the ground spring coefficient, and the load conditions acting on the civil engineering structure 5 (load values, load cases, load combinations, etc.).

[0056] The structure framework data is automatically created from the structure model 50 by the framework data creation unit 202A, but may be manually input by the designer via the input unit 23. The created structure framework data may be editable by the designer.

[0057] In step S21 (reinforcement data creation step), the reinforcement data creation unit 202B accepts the design conditions of the reinforcing bars, for example, via the worker terminal device 3, and registers the reinforcing bars in the database 40. The reinforcement data creation unit 202B then creates reinforcement data representing the arrangement state of the reinforcing bars arranged in the civil engineering structure 5 to be designed, based on the design conditions of the reinforcing bars, and registers the data in the database 40. For example, the reinforcement data creation unit 202B creates reinforcement data by determining the arrangement state when the reinforcing bars are arranged in the cross section of the member model 510 for each member model 510, based on reinforcing bar design values ​​for a plurality of reinforcing bar design items accepted as the design conditions of the reinforcing bars. The design conditions of the reinforcing bars may be input by the designer each time, or may be reused if previously set. For example, default values ​​may be set as the design conditions of the reinforcing bars according to the shape (dimension) of the cross section of each member 51.

[0058] Fig. 20 is a schematic diagram showing an example of reinforcement data. The reinforcement data is data that records the arrangement of reinforcing bars in the cross section of a member 51 that constitutes a civil engineering structure 5 defined by a structure model 50. The reinforcement data is data that further records the number of reinforcing bars, pitch, name (diameter), type (main bar, hoop), material, etc. In Fig. 20, as part of the reinforcement data, the arrangement of reinforcing bars in the case where the type of member 51 is a vertical beam 52B, a horizontal beam 52C, and columns 52E and 52F is illustrated, but the arrangement of reinforcing bars is set similarly for other types of members 51.

[0059] The reinforcement data is automatically created by the reinforcement data creation unit 202B from the design conditions of the reinforcing bars, but may be manually input by the designer via the input unit 23. The created reinforcement data may be editable by the designer.

[0060] In step S30 (structural analysis step), the structural analysis unit 203 performs a structural analysis of the structure model 50 based on the structure framework data created in step S20 and the reinforcement data created in step S21.

[0061] Specifically, the structural analysis unit 203 performs a structural analysis at all times (other than during an earthquake) using linear analysis (normal analysis), and a structural analysis during an earthquake using nonlinear analysis (earthquake-resistant analysis). In the normal analysis, for example, a two-dimensional or three-dimensional linear analysis is adopted, and the member section force of each member 51 is calculated as the acting force acting on each member 51. In the earthquake-resistant analysis, for example, a two-dimensional or three-dimensional nonlinear analysis is adopted, and a load-displacement curve, for example, is calculated as the response value of each member 51 when a predetermined earthquake motion is input. By performing the normal analysis and the earthquake-resistant analysis, the design quality of the structure model 50 can be improved.

[0062] In step S31 (performance verification process), the performance verification unit 204 verifies whether or not the structure model 50 (specifically, the structure framework data and the reinforcement data) acquired in step S11 satisfies the required performance of the civil engineering structure 5 to be designed, based on the analysis result in step S30. That is, the performance verification unit 204 checks whether or not the structure model 50 satisfies the required performance by verifying the analysis design values ​​of each member 51, which are the analysis results of the structural analysis, against the required values ​​of each member 51 defined as the required performance of the civil engineering structure 5 to be designed.

[0063] When the constant analysis is performed, it is confirmed whether or not the acting force (analysis design value) of each member, which is the analysis result of the constant analysis, exceeds the strength (required value) of each member 51, which is specified as the required performance of the civil engineering structure 5. The strength of each member 51 is, for example, a parameter such as bending strength, shear strength, torsional strength, fatigue strength, etc., and may be a value taking into account the time when a train passes. When the seismic analysis is performed, it is confirmed whether or not the response value (analysis design value) of each member, which is the analysis result of the seismic analysis, exceeds the limit value (required value) of each member 51, which is specified as the required performance of the civil engineering structure 5. The limit value of each member 51 is, for example, a parameter such as force, displacement, deformation, and stress. When it is confirmed whether or not the analysis design value exceeds the required value, a coefficient for ensuring a safety margin may be used depending on the structural type of the civil engineering structure 5 and the type of the member 51. In addition, it may be considered whether or not it is uneconomical as the required performance of the civil engineering structure 5.

[0064] Therefore, the performance verification unit 204 verifies whether the structure model 50 satisfies the required performance by verifying the acting force (analysis design value) of each member 51 as the analysis result of the constant analysis against the strength (required value) of each member 51 defined as the required performance. Also, the performance verification unit 204 verifies whether the structure model 50 satisfies the required performance by verifying the response value (analysis design value) of each member 51 as the analysis result of the seismic analysis against the limit value (required value) of each member 51 defined as the required performance. Then, if it cannot be confirmed that the structure model 50 satisfies the required performance of the civil engineering structure 5 (step S32: No), the process proceeds to step S40, and if it can be confirmed that the structure model 50 satisfies the required performance of the civil engineering structure 5 (step S32: Yes), the process proceeds to step S50.

[0065] In step S40, the performance evaluation unit 204 judges whether the reinforcement data can be modified. For example, when the number of reinforcing bars does not reach the upper limit value or the diameter of the reinforcing bars does not reach the upper limit value with the cross-sectional shape of the member 51 fixed, the analysis result of the structural analysis is likely to be improved by increasing the number of reinforcing bars or thickening the diameter of the reinforcing bars, so it is judged that the reinforcement data can be modified. If it is judged that the reinforcement data can be modified (step S40: Yes), the process proceeds to step S41, and if it is judged that the reinforcement data cannot be modified (step S40: No), the process proceeds to step S42. The branch in step S40 may be manually operated by the designer via the input unit 23.

[0066] In step S41 (reinforcement data correction process), if it is not possible to confirm in step S32 that the required performance of the civil engineering structure 5 is satisfied and it is determined in step S40 that the reinforcement data can be corrected, the reinforcement data correction unit 205A corrects the reinforcement data, treats the corrected reinforcement data as having been created in step S21 (reinforcement data creation process), and returns to step S30 (structural analysis process).

[0067] Specifically, when the analysis result of the constant analysis or the analysis result of the seismic analysis does not satisfy the required performance, the reinforcement data correction unit 205A corrects the reinforcement data so as to change the arrangement state of the reinforcing bars arranged in the member 51 that does not satisfy the required performance. As a method of correcting the reinforcement data, the reinforcement data of the member model 510 corresponding to the member 51 that does not satisfy the required performance is changed so as to increase the number of reinforcing bars arranged in the member 51 that does not satisfy the required performance or to make the diameter of the reinforcing bars thicker. This makes it possible to optimize the arrangement state of the reinforcing bars that satisfies the required performance of the civil engineering structure 5. Note that the method of correcting the reinforcement data is not limited to the above example. The reinforcement data may be manually corrected by the designer via the input unit 23.

[0068] When the reinforcement data correction unit 205A corrects the reinforcement data as described above and returns to step S30, step S31 is repeated for the corrected reinforcement data, and then in step S32, the process proceeds to either step S40 or step S50 depending on whether the structure model 50 (specifically, the structure framework data and the corrected reinforcement data) satisfies the required performance.

[0069] In step S42 (structure model correction step), if it cannot be confirmed in step S32 that the required performance of the civil engineering structure 5 is satisfied and if it is determined in step S40 that the reinforcement data cannot be corrected, the structure model correction unit 205B corrects the structure model 50, and returns to step S20 (framework data creation step) assuming that the corrected structure model 50 was acquired in step S11 (model acquisition step). When returning to step S20, steps S20 and after are repeated, but if the reinforcement data does not need to be recreated, step S21 may be omitted.

[0070] Specifically, the structure model correction unit 205B corrects the structure model 50 when the analysis result of the constant analysis does not satisfy the required performance, or when the analysis result of the seismic analysis does not satisfy the required performance. As a method of correcting the structure model 50, a member design value for a member design item (e.g., dimension) in the member model 510 corresponding to a member 51 that does not satisfy the required performance is changed so as to change the cross-sectional shape of the member 51 that does not satisfy the required performance. For example, the member design value may be changed according to the size or ratio when the analysis design value exceeds the required value. This makes it possible to optimize the cross-sectional shape of each member 51 that satisfies the required performance of the civil engineering structure 5.

[0071] Then, the structure model correction unit 205B corrects the structure model 50 by reflecting the changed component model 510 in the structure model 50. At that time, component design values ​​for multiple component design items may be changed respectively. Furthermore, the component model 510 to be changed may be multiple component models 510 or multiple types of component models 510. Note that the method of correcting the structure model 50 is not limited to the above example. The structure model 50 may be manually corrected by the designer via the input unit 23.

[0072] Fig. 21 is a schematic diagram for explaining a method of correcting the structure model 50. Fig. 21 illustrates a case where the cross-sectional shapes (dimensions) of the upper beams (longitudinal beam model 520B, horizontal beam model 520C), column models 520E and 520F, underground beam model, and pile model 520G are corrected to larger dimensions than before correction.

[0073] When the structure model correction unit 205B corrects the structure model 50 as described above and returns to step S20, steps S20 to S31 are repeatedly performed on the corrected structure model 50, and then the process proceeds to either step S40 or step S50 depending on whether the corrected structure model 50 satisfies the required performance in step S32.

[0074] In step S50 (reinforcement model creation step), if it is confirmed in step S32 that the structure model 50 satisfies the required performance of the civil engineering structure 5, the reinforcement model creation unit 206 creates a reinforcement model 56 representing the three-dimensional shape of the reinforcing bars to be arranged in the civil engineering structure 5, based on the reinforcement data obtained when the structural analysis of the structure model 50 was performed in step S30. Note that if the reinforcement data is corrected in step S41, the reinforcement model creation unit 206 creates the reinforcement model 56 based on the corrected reinforcement data.

[0075] Specifically, the reinforcement model creation unit 206 arranges a plurality of reinforcement models 560 corresponding to a plurality of reinforcement bars based on the number and pitch of the reinforcement bars recorded in the reinforcement data, and determines the three-dimensional shape of each reinforcement model 560 in accordance with the diameter of the reinforcement bars recorded in the reinforcement data and the reinforcement structure details defined for the entire structure 5 or for each type of member 51, thereby creating the reinforcement model 56. Examples of the reinforcement structure details include the cover of the reinforcement bars, bending processing, fixing method, joints, etc. Note that the reinforcement structure details may be accepted as design conditions for the reinforcement bars in step S21, for example, or may refer to the database 40 if they are registered in advance in the database 40.

[0076] In step S51 (model output step), the model output unit 207 outputs the confirmed structure model 50 that has been confirmed to satisfy the required performance in step S32, and the reinforcement model 56 created in step S50. For example, when the database 40 is selected as the output destination, the model output unit 207 registers the confirmed structure model 50 and the reinforcement model 56 created in step S50 in the database 40. Note that the output destination to which the model output unit 207 outputs the structure model 50 and the reinforcement model 56 is not limited to the database 40. In addition, the output method when the model output unit 207 outputs the structure model 50 and the reinforcement model 56 is not limited to outputting data, and may be a screen display (for example, model display screens 11A and 11B described later or steps S60 and S61 described later) or a printout.

[0077] Fig. 22 is a diagram showing an example of a model display screen 11A displaying a structure model 50. Fig. 23 is a diagram showing an example of a model display screen 11B displaying the structure model 50 and a reinforcement model 56 in an overlapping manner.

[0078] The model display screens 11A and 11B include a model display area 110 that displays at least one of the structure model 50 and the reinforcement model 56, a model selection box 111 that selects the display object model from the structure model 50 and the reinforcement model 56 to be displayed in the model display area 110, a 2D drawing creation button 112 that instructs the creation of a 2D drawing based on the structure model 50, a reinforcement drawing creation button 113 that instructs the creation of a reinforcement drawing based on the reinforcement model 56, and a quantity summary table creation button 114 that instructs the creation of a quantity summary table based on the structure model 50 or the reinforcement model 56.

[0079] The model display area 110 is configured to be able to update the display form of the structure model 50 and the reinforcement model 56 in response to operational inputs such as zooming in, zooming out, and rotation. The model display area 110 in Fig. 22 illustrates a case where the structure model 50 is displayed. The model display area 110 in Fig. 23 illustrates a case where the reinforcement model 56 is superimposed and displayed in a state where the structure model 50 is transparent. The model display area 110 may be configured to be able to select a component model 510 (a plurality of component models 510 may be able to be selected at once), and to be able to edit component design values ​​for component design items in the selected component model 510 (a plurality of component models 510 may be able to be edited at once).

[0080] In this embodiment, the following explanation assumes that the 2D drawing creation button 112 is pressed, the process proceeds to step S60, the reinforcement drawing creation button 113 is pressed, the process proceeds to step S61, and the quantity summary table creation button 114 is further pressed, the process proceeds to step S62.

[0081] In step S60 (two-dimensional drawing creation process), the two-dimensional drawing creation unit 208A creates a two-dimensional drawing representing an outline drawing or a cross-sectional view of the civil engineering structure 5 or member 51 based on the structure model 50. At that time, the two-dimensional drawing creation unit 208A may extract a cross-section including the main dimensions (column dimensions, pile dimensions, etc.) of the civil engineering structure 5 or member 51, and create a two-dimensional drawing representing the extracted cross-section. In addition, the two-dimensional drawing creation unit 208A may create a two-dimensional drawing representing a cross-section in a normal direction to the track center line 100 of a straight or curved portion, or may create a two-dimensional drawing representing a cross-section in a direction along the track center line 100.

[0082] 24 is a diagram showing an example of a two-dimensional drawing display screen 12 that displays a two-dimensional drawing. The two-dimensional drawing display screen 12 includes a two-dimensional drawing display area 120 that displays a two-dimensional drawing, a type selection box 121 that indicates the type of outline drawing or cross-sectional drawing, and a two-dimensional drawing save button 122 that instructs saving of the two-dimensional drawing. The two-dimensional drawing may include not only line drawings of the civil engineering structure 5 and members 51, but also dimension lines, materials, construction methods, and the like.

[0083] In step S61 (reinforcement bar arrangement drawing creation step), the reinforcing bar arrangement drawing creation unit 208B creates a reinforcing bar arrangement drawing showing an outline drawing or a cross-sectional drawing of a reinforcing bar based on the reinforcing bar arrangement model 56.

[0084] 25 is a diagram showing an example of the reinforcement drawing display screen 13 that displays a reinforcement drawing. The reinforcement drawing display screen 13 includes a reinforcement drawing display area 130 that displays a reinforcement drawing, a type selection box 131 that specifies the type of member 51, and a reinforcement drawing save button 132 that instructs saving the reinforcement drawing. The reinforcement drawing may include not only a line diagram of reinforcing bars, but also dimension lines, materials, construction methods, and the like.

[0085] In step S62 (quantity summary table creation step), the quantity summary table creation unit 209 counts up the quantities of the members 51 or rebars based on the structure model 50 or the reinforcement model 56, and creates a quantity summary table recording the counted results.

[0086] 26 is a diagram showing an example of a quantity summary table display screen 14 that displays a quantity summary table. The quantity summary table display screen 14 includes a quantity summary table display area 140 that displays the quantity summary table, a type selection box 141 that specifies the type of the quantity summary table, and a quantity summary table save button 142 that specifies saving of the quantity summary table. The quantity summary table, for example, tallies the quantities of columns and piles based on member design values ​​such as column height and pile length, and displays the tallied quantities in a table format.

[0087] (Second Action) 18, first, in step S12 (model acquisition step), the model acquisition unit 201 acquires the structure model 50 and the reinforcement model 56 of the civil engineering structure 5. For example, when a reference destination of a database 40 is specified by a designer on a display screen on which a file name or the like can be specified, the model acquisition unit 201 acquires the structure model 50 and the reinforcement model 56 by reading out the structure model 50 and the reinforcement model 56 from the reference destination database 40.

[0088] In step S20 (skeleton data creation step), the skeleton data creation unit 202A creates structure skeleton data based on the structure model 50 acquired in step S12, similar to the first operation.

[0089] In step S22 (reinforcement data creation step), the reinforcement data creation unit 202B creates reinforcement data based on the reinforcement model 56 acquired in step S12, and registers the data in the database 40. For example, the reinforcement data creation unit 202B creates the reinforcement data by converting the three-dimensional shape of the reinforcing bar included in the reinforcement model 56 into the data format of the reinforcement data. If the structure model 50 is corrected in step S42, the process proceeds to step S22 after step S20. In this case, the reinforcement data creation unit 202B receives the design conditions of the reinforcing bar via, for example, the worker terminal device 3, and creates the reinforcement data, as in step S21. Note that the method by which the reinforcement data creation unit 202B creates the reinforcement data is not limited to the above example. For example, in the case where the created reinforcement data is registered in the database 40, the model acquisition unit 201 may acquire the reinforcement data by reading out the created reinforcement data from the reference database 40 when the designer specifies the reference destination of the database 40 on a display screen where a file name, etc., can be specified.

[0090] In step S30 (structural analysis step), the structural analysis unit 203 performs a structural analysis of the structure model 50 based on the structure framework data created in step S20 and the reinforcement data created in step S22. The structural analysis is similar to the first operation, and therefore a description thereof will be omitted.

[0091] In step S31 (performance verification step), similarly to the first operation, the performance verification unit 204 verifies, based on the analysis result in step S30, whether or not the structure model 50 acquired in step S12 satisfies the required performance of the civil engineering structure 5. If it cannot be confirmed that the structure model 50 satisfies the required performance of the civil engineering structure 5 (step S32: No), the process proceeds to step S40, and if it can be confirmed that the structure model 50 satisfies the required performance of the civil engineering structure 5 (step S32: Yes), the process proceeds to step S50.

[0092] In step S40, the performance verification unit 204 judges whether the reinforcement data can be corrected or not, as in the first operation. If it is judged that the reinforcement data can be corrected (step S40: Yes), the process proceeds to step S41, and if it is judged that the reinforcement data cannot be corrected (step S40: No), the process proceeds to step S42.

[0093] In step S41 (reinforcement data correction step), the reinforcing bar data correction unit 205A corrects the reinforcing bar data, and returns to step S30 (structural analysis step) assuming that the corrected reinforcing bar data was created in step S22 (reinforcement data creation step).

[0094] In step S42 (structure model correction step), the structure model correction unit 205B corrects the structure model 50, and returns to step S20 (framework data creation step) assuming that the corrected structure model 50 was acquired in step S12 (model acquisition step). When returning to step S20, steps S20 and after are repeated, but if re-creation of reinforcement data is not required, step S22 may be omitted.

[0095] In step S50 (reinforcement model creation step), similarly to the first operation, when it is confirmed in step S32 that the structure model 50 satisfies the required performance of the civil engineering structure 5, the reinforcement model creation unit 206 creates the reinforcement model 56 based on the reinforcement data obtained when the structural analysis of the structure model 50 is performed in step S30. Note that, when it is confirmed in step S32 that the structure model 50 satisfies the required performance of the civil engineering structure 5, the reinforcement model creation unit 206 may omit creating the reinforcement model 56 in step S50 if the reinforcement data obtained in step S32 that the structure model 50 satisfies the required performance of the civil engineering structure 5 is generated from the reinforcement model 56 in step S22.

[0096] In step S51 (model output step), the model output unit 207 outputs the confirmed structure model 50 that has been confirmed to satisfy the required performance in step S32, and the reinforcement model 56 created in step S50, in the same manner as in the first operation. Each of the subsequent steps S60 to S62 is similar to the first operation, and therefore description thereof will be omitted.

[0097] As described above, according to the structure design support device 2 and the structure design support method executed by the structure design support device 2 according to the present embodiment, in the structural analysis step, structural analysis of the civil engineering structure model 50 is performed based on the structure framework data and the reinforcement data of the civil engineering structure 5 to be designed, and in the structural model correction step, the structure model 50 is corrected according to the analysis result of the structural analysis, so that in the model output step, the structure model 50 that satisfies the required performance of the civil engineering structure 5 is output. Therefore, the structural analysis of the civil engineering structure model 50 and the correction of the structure model 50 operate in conjunction with each other, and as a result, the structure model 50 that satisfies the required performance of the civil engineering structure 5 is output. Therefore, the work of the designer when designing the civil engineering structure 5 using the structure model 50 as a three-dimensional model can be simplified. In addition, in the structural analysis of the civil engineering structure model 50, the structure framework data and the reinforcement data are used instead of the structure model 50 as a three-dimensional model, so that the calculation load of the structural analysis can be reduced.

[0098] Furthermore, in a structural analysis step, a structural analysis of the civil engineering structure model 50 is executed based on the structure framework data and reinforcement data of the civil engineering structure 5 to be designed, in a reinforcement data correction step, the reinforcement data is corrected in accordance with the results of the structural analysis, and in a reinforcement model creation step, a reinforcement model 56 is created based on the reinforcement data, and in a model output step, a reinforcement model 56 that satisfies the required performance of the civil engineering structure 5 is output. Therefore, the designer does not need to create a new reinforcement model 56 as a three-dimensional model in accordance with the structure model 50 or to correct the reinforcement model 56 in accordance with the results of the structural analysis, thereby simplifying the work of the designer.

[0099] (Other embodiments) The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention. All such modifications are included in the technical concept of the present invention.

[0100] In the above embodiment, the functions of the units 200 to 209 of the structure design support device 2 are described as being realized by one device, but the functions of the units may be distributed among a plurality of devices to be realized by a plurality of devices. Also, the control unit of the worker terminal device 3 may function as the structure design support device 2 by executing the structure design support program 210.

[0101] In the above embodiment, the structure design support device 2 operates according to the flowcharts shown in FIGS. 17 and 18. However, the order of execution of each step (process) may be changed as appropriate, and some steps (processes) may be omitted.

[0102] For example, in the above embodiment, a case has been described in which the model creation unit 200 creates the structure model 50 in step S10, but for example, if an already created structure model 50 has been registered in the database 40, step S10 may be omitted. In that case, in step S11, the model acquisition unit 201 may acquire the already created structure model 50 from the database 40.

[0103] In the above embodiment, the case where the performance verification unit 204 judges whether or not the reinforcement data can be corrected in step S40 has been described, but step S40 may be omitted. In that case, either one of steps S41 or S42 may be executed. Both steps S41 and S42 may be executed.

[0104] Furthermore, in the above embodiment, the case where the reinforcement model creation unit 206 creates the reinforcement model 56 in step S50 has been described, but step S50 may be omitted. In that case, in step S51, the model output unit 207 may output the confirmed structure model 50 without outputting the reinforcement model 56. Furthermore, the execution order of steps S60 to S62 may be changed as appropriate, and all or a part of steps S60 to S62 may be omitted.

[0105] In the above embodiment, the structure design support device 2 executes the structure design support program 210 to realize a structure model creation process (structure model creation unit 200) for creating the structure model 50, a framework data creation process (framework data creation unit 202A) for creating structure framework data, a reinforcement data creation process (reinforcement data creation unit 202B) for creating reinforcement data, a structural analysis process (structural analysis unit 203) for performing structural analysis, and a reinforcement model creation process (reinforcement model creation unit 206) for creating the reinforcement model 56. However, some of these processes may be realized by a program other than the structure design support program 210. For example, the structure model creation process may be realized by the structure model creation unit 200 cooperating with another program that executes a process for creating the structure model 50.

[0106] Specifically, the framework data creation process may be realized by the framework data creation unit 202A cooperating with another framework data creation program that executes a process of creating structure framework data, and the reinforcement data creation process may be realized by the reinforcement data creation unit 202B cooperating with another reinforcement data creation program that executes a process of creating reinforcement data.

[0107] The structural analysis step may be realized by the structural analysis unit 203 cooperating with another structural analysis program that executes a process for performing structural analysis. In this case, the structure framework data created by the framework data creation unit 202A (which may be a framework data creation program) and the reinforcement data created by the reinforcement data creation unit 202B (which may be a reinforcement data creation program) are input as intermediate files to the structural analysis program. Therefore, the structure framework data and the reinforcement data may be created in the form of an intermediate file that can be input to the structural analysis program. Note that the structural analysis program may use a plurality of structural analysis programs with different analysis methods, and in that case, the structure framework data and the reinforcement data may be created for each structural analysis program in the form of an intermediate file corresponding to each structural analysis program. Also, the designer may select a structural analysis program to perform structural analysis from a plurality of structural analysis programs.

[0108] Furthermore, the reinforcement model creation unit 206 may cooperate with another reinforcement model creation program that executes a process of creating the reinforcement model 56, thereby realizing a reinforcement model creation step.

[0109] The five other programs may be a common program or may be separate programs. The five other programs may be executed by the structure design support device 2, or may be executed by another device connected to the structure design support device 2 via the network 10.

[0110] In the above embodiment, the structure design support device 2 creates the structure model 50A and the reinforcement model 56 of the rigid-frame viaduct 5A, but the structure design support device 2 may create the structure model 50 and the reinforcement model 56 of any civil engineering structure 5. For example, the structure design support device 2 may create the structure models 50B to 50E and the reinforcement models 56 of a simple girder bridge 5B, a mountain tunnel 5C, a shield tunnel 5D, and an underground structure 5E, respectively, but is not limited thereto. [Explanation of symbols]

[0111] 1...Structural design support system, 2...Structural design support device, 3...Worker terminal device, 4...database device, 5...civil engineering structure, 5A...rigid frame viaduct, 5B...simple girder bridge, 5C: Mountain tunnel, 5D: Shield tunnel, 5E: Underground structure, 6: Construction site, 11A, 11B...Model display screen, 12...2D drawing display screen, 13...Reinforcement drawing display screen, 14...Quantity summary table display screen, 20... control unit, 21... storage unit, 22... communication unit, 23... input unit, 24... output unit, 40...database, 41...structure management data, 50, 50A to 50E...structure model, 51...member, 52A...slab, 52B...vertical beam, 52C...horizontal beam, 52D...parapet, 52E, 52F...Column, 52G...Pile, 52H...Nekaki steel pipe, 53A...Main girder, 53B... abutment body, 53C... abutment foundation, 53D... pier body, 53E... pier foundation, 54A...arch, 54B...side wall, 54C...invert, 54F...A segment, 54G…B segment, 54H…K segment, 55A…upper floor slab, 55B…side wall, 55C…lower deck, 55D…pile, 56…reinforcement model, 60...Ground surface, 61...Support layer, 62...Buried object, 100...Track center line, 200... structure model creation unit, 201... model acquisition unit, 202A... framework data creation unit, 202B... Reinforcement data creation department, 203... Structural analysis department, 204... Performance verification department, 205A...bar arrangement data correction unit, 205B...structure model correction unit, 206...bar arrangement model creation unit, 207...model output unit, 208A...two-dimensional drawing creation unit, 208B…Reinforcement drawing preparation section, 209…Quantity summary table preparation section, 210…Structural design support program, 510: member model, 520A: slab model, 520B: longitudinal beam model, 520C...beam model, 520D...railing model, 520E, 520F...column model, 520G: pile model, 520H: steel pipe model, 530A: main girder model, 530B...Abutment body model, 530C...Abutment foundation model, 530D...Pier body model, 530E…Pier foundation model, 540A…Arch model, 540B…Side wall model, 540C…Invert model, 540D…Deformed bar model, 540F...A segment model, 540G...B segment model, 540H...K segment model, 550A...upper floor model, 550B...side wall model, 550C: Lower deck model, 550D: Pile model, 560: Reinforced bar model

Claims

1. A method for supporting design of a railway-related civil engineering structure, the structure being composed of a plurality of members of a plurality of types, using a computer, comprising: a model acquisition step of acquiring a structure model representing a three-dimensional shape of the civil engineering structure, the structure model being composed of a plurality of member models of a plurality of types each representing a three-dimensional shape of a plurality of the members; a framework data creation step of creating structure framework data relating to a framework of the civil engineering structure based on the structure model acquired in the model acquisition step; a reinforcement data creation process for creating reinforcement data representing an arrangement state of reinforcing bars in a cross section of the member as an arrangement state of reinforcing bars arranged in the civil engineering structure represented by the structure model acquired in the model acquisition process; a structural analysis step of performing a structural analysis of the structure model based on the structure framework data created in the framework data creation step and the reinforcement data created in the reinforcement data creation step; a performance verification step of verifying whether or not the structure model satisfies the required performance of the civil engineering structure based on the analysis result of the structural analysis step; a structure model correction step of correcting the structure model when it cannot be confirmed in the performance verification step that the structure model satisfies the required performance, and returning to the framework data creation step as the corrected structure model obtained in the model acquisition step; and a model output step of outputting the confirmed structure model when it is confirmed in the performance verification step that the structure model satisfies the required performance. Structure design support method.

2. The structural analysis step includes a normal structural analysis using linear analysis and a structural analysis during an earthquake using nonlinear analysis. The structure design support method according to claim 1 .

3. The performance verification step is to verify whether the structure model satisfies the required performance by verifying an analysis design value of each of the components, which is the analysis result, against a required value of each of the components defined as the required performance. The structure design support method according to claim 1 .

4. The plurality of component models define three-dimensional shapes of the components by setting component design values ​​for a plurality of component design items, respectively; The structure model correction step changes the member design values ​​for the member design items in the member model corresponding to the member not satisfying the required performance so as to change a cross-sectional shape of the member. The structure design support method according to claim 3.

5. The method further includes a reinforcement data correction step of correcting the reinforcement data and returning to the structural analysis step as the reinforcement data created in the reinforcement data creation step if it cannot be confirmed in the performance verification step that the structural model satisfies the required performance. The structure design support method according to claim 1 .

6. A two-dimensional drawing creation step is further provided for creating a two-dimensional drawing representing an outline drawing or a cross-sectional drawing of the civil engineering structure or the member based on the structure model. The structure design support method according to claim 1 .

7. If it is confirmed in the performance verification step that the structure model satisfies the required performance, a reinforcement model creation step is further provided for creating a reinforcement model representing a three-dimensional shape of reinforcing bars to be arranged in the civil engineering structure based on the reinforcement data when the structural analysis is performed in the structural analysis step, The model output step outputs the confirmed structure model and the reinforcement model created in the reinforcement model creation step. The structure design support method according to claim 1 .

8. The method further includes a step of creating a reinforcement drawing showing an outline or cross-sectional view of the reinforcing bar based on the reinforcement model. The structure design support method according to claim 7.

9. The method further includes a quantity summary table creation step of tallying up the quantities of the members or the reinforcing bars based on the structure model or the reinforcing bar arrangement model, and creating a quantity summary table that records the tallying results. The structure design support method according to claim 7.

10. On the computer, 10. A method for supporting a structure design comprising the steps of: Structural design support program.

11. A computer comprising: A control unit that executes each step included in the structure design support method according to any one of claims 1 to 9, Structure design support equipment.

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