Support systems, support methods, and support programs

Abstract

This invention provides a support system, support method, and support program that enable efficient design work using BIM models. [Solution] The support system 1 includes a support device 20 having a second control unit 21 for supporting the design of structures. The second control unit 21 acquires first structural information of members included in a first analysis model in which structural analysis has been performed and stores it in a structural information database 23, creates a BIM model based on the first analysis model, acquires second structural information of members included in a second analysis model in which the first analysis model has been updated and updates the structural information database 23, and updates the members included in the BIM model based on the second structural information stored in the structural information database 23.

Description

Technical Field

[0005] ,

[0001] The present disclosure relates to a support system, a support method, and a support program for assisting in the design of a structure.

Background Art

[0002] In the design of structures such as buildings, BIM (Building Information Modeling) is used. In BIM, in addition to three-dimensional shape information of the structure, it also has various attribute information of the structure. The attribute information of the structure includes, for example, attribute information related to structural design, equipment design, design design, etc. in the design stage, and attribute information related to production in the construction stage. In the design and construction stages of a building using BIM, while sharing the data of the BIM model among the persons in charge, the design and construction are advanced by each person in charge appropriately generating and modifying the data related to their respective responsible parts (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003] <​​​​​​​​​​​​​​​​​​​​A support system for solving the above problems is a support system comprising a control unit for supporting the design of a structure, wherein the control unit acquires first structural information of members included in a first analysis model on which structural analysis has been performed and stores it in a structural information database, creates a BIM model based on the first analysis model, acquires second structural information of members included in a second analysis model on which the first analysis model has been updated and updates the structural information database, and updates the members included in the BIM model based on the second structural information stored in the structural information database. [Effects of the Invention]

[0006] According to this disclosure, design work using BIM models can be performed efficiently. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a schematic diagram showing the overall configuration of the support system. [Figure 2] Figure 2 is an explanatory diagram of the hardware configuration of the embodiment. [Figure 3] Figure 3 is a schematic diagram representing the contents of the structural information database. [Figure 4] Figure 4 is a flowchart showing the steps involved in generating the design BIM model. [Figure 5] Figure 5 is a flowchart showing the procedure for updating the design BIM model. [Figure 6] Figure 6 is a schematic diagram illustrating the contents of the matching process. [Figure 7] Figure 7 is a schematic diagram illustrating the contents of the document generation process; Figure 7(a) is a schematic diagram for generating design documents, and Figure 7(b) is a schematic diagram for generating inspection reports. [Modes for carrying out the invention]

[0008] An embodiment of the support system, support method, and support program will be described below with reference to Figures 1 to 7. In this embodiment, the support system will be described as one that assists in the design of a building, which is an example of a structure, using BIM.

[0009] As shown in Figure 1, the support system 1 of this embodiment comprises a user terminal 10, a support device 20, and a steel frame BIM server 30. The user terminal 10, the support device 20, and the steel frame BIM server 30 are connected to each other via a network.

[0010] (Hardware configuration) Figure 2 illustrates the hardware configuration of the information processing device H10, which constitutes the user terminal 10, the support device 20, and the steel frame BIM server 30, respectively. 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 be implemented with other hardware.

[0011] Communication device H11 is an interface for establishing a communication path to send and receive data between other devices. Communication device H11 can be, for example, a network interface or a wireless interface.

[0012] The input device H12 is a device that accepts input of various types of information. An example of an input device H12 is a mouse or keyboard. The display device H13 is a display that shows various types of information. The storage device H14 stores data and programs for executing various functions of the support device 20, etc. Examples of storage devices H14 include ROM, RAM, and hard disks.

[0013] Processor H15 controls each process in the support device 20 and the like by using programs and data stored in the storage device H14. Examples of the processor H15 include, for example, a CPU, an MPU, and the like. This processor H15 expands a program stored in a ROM or the like into a RAM and executes various processes for each process.

[0014] The processor H15 is not limited to performing software processing for all processes it executes. For example, the processor H15 may include a dedicated hardware circuit (for example, 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 can be configured as follows.

[0015] 〔1〕One or more processors that operate according to a computer program (software) 〔2〕One or more dedicated hardware circuits that execute at least a part of various processes 〔3〕A combination thereof, including circuitry The processor includes a CPU and memories such as a RAM and a ROM. The memory stores program codes or instructions configured to cause the CPU to execute a process. The memory, that is, the computer-readable medium, includes any available medium that can be accessed by a general-purpose or dedicated computer.

[0016] (Support system) Next, each function of the support system 1 will be described using FIG. 1. The user terminal 10 is a computer terminal used by a person in charge of performing the structural design of a building. The user terminal 10 includes a first control unit 11 and an analysis information storage unit 12.

[0017] The first control unit 11 functions as an analysis model creation unit 11A and an analysis processing unit 11B by executing a program for structural analysis. The analysis model creation unit 11A creates an analysis model for structural analysis. For example, the analysis model is a 3D CAD (Computer Aided Design) model including member objects of a building. The member objects are, for example, objects such as the foundation, columns, and beams of a building. The analysis model includes shape information for specifying the shape of the member object and arrangement information for specifying the arrangement (coordinates) of the member object in the 3D model space.

[0018] The analysis processing unit 11B performs various structural analyses such as stress calculation on the analysis model. During the structural analysis, material information for specifying the material of the member object is set for the member objects included in the analysis model. Note that the analysis model on which the analysis processing unit 11B performs the structural analysis may be a model obtained by converting the base 3D CAD model into a format (e.g., mesh model) according to the structural analysis method.

[0019] The analysis information storage unit 12 stores various types of information related to structural analysis, such as a program for structural analysis, the analysis model created by the analysis model creation unit 11A, and the analysis results of the structural analysis by the analysis processing unit 11B.

[0020] The support device 20 is a computer system for performing design processing using BIM. The support device 20 includes a second control unit 21, a design BIM storage unit 22, and a structural information database 23.

[0021] The second control unit 21 functions as a design BIM management unit 21A, a DB management unit 21B, a collation unit 21C, a document creation unit 21D, etc. by executing a support program. The design BIM management unit 21A manages the BIM model generated by the BIM application. In the BIM model, in addition to the 3D model including shape information and arrangement information about the member objects constituting the building, the attribute information (properties) of the members can be managed.

[0022] In the following, the BIM model created by the Design BIM Management Department 21A will be referred to as the design BIM model. The design BIM model is created based on the shape information and placement information of member objects included in the analysis model from which structural analysis has been performed.

[0023] The material information for member objects included in the design BIM model is set according to the material properties specified as analysis conditions during structural analysis. Furthermore, member objects in the design BIM model are assigned a member code based on their type. For example, in the design BIM model, member objects of the same type are assigned the same member code.

[0024] The DB management unit 21B manages the structural information stored in the structural information database 23. For example, the DB management unit 21B creates and edits data files containing structural information. The structural information includes shape information for identifying the shape (e.g., cross-sectional shape) of a member object, and material information for identifying the material of a member object.

[0025] The matching unit 21C compares the structural information stored in the structural information database 23 and the information contained in the design BIM model with the information contained in the steel frame BIM model. The steel frame BIM model is created by a steel fabricator (manufacturer), which is a business that manufactures and processes steel frames. The steel frame BIM model is data intended for detailed design specifically for the manufacture and construction of steel frames, and contains more specific information for the manufacture and assembly of steel frames than the design BIM model. The steel frame BIM model is created, for example, based on the design BIM model using a CAD application specifically for steel frames.

[0026] The document creation unit 21D assists in the creation of various document data based on structural information stored in the structural information database 23 and various information included in the design BIM model.

[0027] The design BIM storage unit 22 stores the design BIM model created by the design BIM management unit 21A. The design BIM model stored in the design BIM storage unit 22 is shared with the architectural designer, the building services designer, and other personnel. The design BIM model stored in the design BIM storage unit 22 is configured to be updated by the structural designer and other personnel as the design progresses.

[0028] The structural information database 23 is a database for managing structural information reflected in the design BIM model separately from the design BIM model. For example, the structural information database 23 stores structural information for each type of member included in the analysis model. For example, the structural information database 23 stores a correspondence between member codes assigned to each type of member included in the analysis model and structural information such as shape information and material information.

[0029] As shown in Figure 3, for example, the structural information database 23 stores, in association with the shape information, material information, and member code of steel materials used in columns, beams, etc. Figure 3 illustrates the structural information of an H-beam stored in the structural information database 23. For example, the structural information database 23 stores dimensions such as the height "H", flange width "B", web thickness "tw", flange thickness "tf", and the radius "r" of the curved surface at the connection point between the web and flange as shape information for the H-beam. The structural information database 23 also stores a symbol representing the manufacturing standard of the steel material as material information for the H-beam. The structural information database 23 may also store information that can identify the type of joint applied to the steel material (in Figure 3, "joint code") for steel materials used in columns and beams.

[0030] Furthermore, structural information may be any information about the structural materials used in a building, and is not limited to information about steel materials. For example, the structural information database 23 stores, in association with shape information including cross-sectional dimensions, length, and the number and diameter of reinforcing bars for reinforced concrete columns of a building, material information including strength information of the reinforcing bars and concrete, and member codes for the columns.

[0031] Returning to Figure 1, the steel frame BIM server 30 is a server managed by the steel frame fabricator. The steel frame BIM server 30 includes a steel frame BIM storage unit 31. The steel frame BIM storage unit 31 stores the steel frame BIM model.

[0032] (Process for creating the design BIM model) Next, we will explain the process of creating the design BIM model in support system 1. As shown in Figure 4, when creating a design BIM model, the analysis processing unit 11B of the user terminal 10 first performs a structural analysis of the analysis model (step S11). Specifically, the analysis processing unit 11B quantitatively analyzes the state of the analysis model when a load is applied to the analysis model of the structure created by the analysis model creation unit 11A. During the structural analysis by the analysis processing unit 11B, material information is set for the member objects included in the analysis model.

[0033] When creating a design BIM model, the analysis conditions, such as the shape, arrangement, and material of the member objects included in the analysis model, and the structural analysis are repeated until the desired analysis results are obtained. Once the desired analysis results are obtained, the process proceeds to the next step, S12. In the following, the analysis model from which the desired analysis results were obtained through structural analysis in step S11 will be referred to as the first analysis model.

[0034] Next, the design BIM management unit 21A of the support device 20 creates a design BIM model based on the first analysis model (step S12). Specifically, the design BIM management unit 21A acquires data from the analysis information storage unit 12 of the user terminal 10, and then converts the first analysis model into a design BIM model.

[0035] In this case, a design BIM model is generated that reflects the shape information, placement information, and material information of the member objects included in the first analysis model. In addition, in the design BIM model, each member object is assigned a member code according to its type. This design BIM model is stored in the design BIM storage unit 22.

[0036] Next, the DB management unit 21B of the support device 20 stores the structural information of the first analysis model in the structural information database 23 (step S13). Specifically, after the DB management unit 21B obtains the structural information of the first analysis model from the analysis information storage unit 12 of the user terminal 10, it stores the structural information in the structural information database 23 along with the member codes of the member objects. Hereinafter, the structural information of the first analysis model will be referred to as the first structural information. The first structural information includes shape information and material information of the member objects included in the first analysis model.

[0037] The creation of the design BIM model is completed by following the above procedure. Note that the order of the processes in steps S12 and S13 does not matter, and step S13 may be performed before step S12. The created design BIM model will be used by the structural design, architectural design, and MEP design teams. In the design BIM model, adjustments to the placement of component objects and other details will be made when performing detailed design.

[0038] (Updating the design BIM model) Next, with reference to Figure 5, the update process for the design BIM model in support system 1 will be explained. The design BIM model update process is performed, for example, when the shape or material of member objects included in the design BIM model is changed. In other words, the design BIM model update process is performed when the first analysis model is updated to the second analysis model. The second analysis model is an analysis model in which the shape and material of member objects have been changed from the first analysis model.

[0039] As shown in Figure 5, when updating the design BIM model, the analysis processing unit 11B of the user terminal 10 first performs a structural analysis of the second analysis model (step S21). In step S21, the adjustment of analysis conditions such as the shape, arrangement, and material of the member objects included in the second analysis model and the structural analysis are repeated until the desired analysis result is obtained. Hereinafter, the structural information of the second analysis model will be referred to as the second structural information. The second structural information includes shape information and material information of the member objects included in the second analysis model.

[0040] Next, the DB management unit 21B of the support device 20 updates the structural information stored in the structural information database 23 from the first structural information to the second structural information (step S22). Specifically, after the DB management unit 21B obtains the second structural information of the second analysis model from the analysis information storage unit 12 of the user terminal 10, it updates (replaces) the structural information stored in the structural information database 23 from the first structural information to the second structural information. At this time, the member codes stored in the structural information database 23 are maintained.

[0041] Next, the design BIM management unit 21A of the support device 20 updates the structural information of the design BIM model with the second structural information registered in the structural information database 23 (step S23). Specifically, after obtaining the second structural information registered in the structural information database 23, the design BIM management unit 21A updates (replaces) the structural information of the member objects included in the design BIM model from the first structural information to the second structural information. At this time, the structural information is updated according to the member code assigned to each member object included in the design BIM model.

[0042] The update process for the design BIM model is completed by following the above procedure. In step S23, structural information such as shape information and material information in the design BIM model is updated from first structural information to second structural information, while parameters adjusted after the creation process of the design BIM model, such as placement information, are maintained. In other words, in this update process, only the structural information of the design BIM model is updated, so the shape information and material information of member objects included in the design BIM model can be updated while maintaining the design adjustments that have already been made to the design BIM model.

[0043] (Verification process) Next, with reference to Figure 6, the verification process in support system 1 will be explained. In the verification process, the information contained in the steel frame BIM model created by the steel frame fabricator is compared with the structural information stored in the structural information database 23 and the information contained in the design BIM model, thereby supporting the structural design personnel in verifying the contents of the steel frame BIM model.

[0044] As shown in Figure 6, the matching unit 21C creates a matching file 100 based on the data extracted from the design BIM storage unit 22, the structural information database 23, and the steel frame BIM storage unit 31.

[0045] Specifically, the matching unit 21C extracts placement information of member objects in the design BIM model from the design BIM storage unit 22. The matching unit 21C also extracts structural information applied to member objects in the design BIM model from the structural information database 23. In the following, the placement information of member objects in the design BIM model extracted from the design BIM storage unit 22 is referred to as the reference placement information, and the structural information extracted from the structural information database 23 is referred to as the reference structural information.

[0046] The matching unit 21C then extracts structural information and placement information of member objects included in the steel frame BIM model from the steel frame BIM storage unit 31. In the following, the structural information of member objects in the steel frame BIM model extracted from the steel frame BIM storage unit 31 is used as the structural information to be matched, and the placement information of member objects in the steel frame BIM model is used as the placement information to be matched.

[0047] Next, the matching unit 21C creates a matching file 100 containing the extracted reference placement information, reference structural information, matching target structural information, and matching target placement information. At this time, the matching unit 21C outputs the results of comparing the reference structural information and reference placement information extracted from the design BIM storage unit 22 and the structural information database 23 with the matching target structural information and matching target placement information extracted from the steel frame BIM storage unit 31 to the matching file 100. For example, the matching unit 21C outputs the results of comparing the reference structural information with the matching target structural information, and the results of comparing the reference placement information with the matching target placement information to the matching file 100.

[0048] The structural design engineer checks the comparison file 100 to verify the discrepancies between the structural design and the steel frame BIM model. If there are no discrepancies in any of the comparison results, it can be confirmed that the steel frame BIM model created by the steel fabricator is in line with the structural design. If there are discrepancies in any of the comparison results, it can be confirmed that the steel frame BIM model deviates from the structural design.

[0049] (Document generation process) Next, we will explain the document generation process in support system 1. As shown in Figures 7(a) and 7(b), the document generation process uses structural information stored in the structural information database 23 and information included in the design BIM model to support the creation of document data such as design documents 200 and inspection forms 300. Design documents 200 are structural drawings that include drawing data such as foundation plans, floor plans, and beam plans. Inspection forms 300 are, for example, forms for reinforcement inspection. The document data may also be, for example, a cross-section list that lists the cross-sectional dimensions of columns, beams, etc., as text data.

[0050] As shown in Figure 7(a), for example, when creating a structural drawing, which is an example of a design document 200, the document creation unit 21D creates drawing data illustrating the shape of member objects based on the design BIM model and outputs it to the structural drawing. The drawing data may be, for example, a floor plan of an arbitrary location or a cross-sectional view of an arbitrary member object. The document creation unit 21D also creates text data representing the dimensions and materials applied to the member objects of the design BIM model, based on the structural information in the structural information database 23, and outputs it to the structural drawing. Alternatively, for example, the document creation unit 21D outputs a cross-section list, which is a list of cross-sectional dimensions as text data, based on the structural information in the structural information database 23. The cross-section list may also output drawing data of cross-sectional views created based on the design BIM model, along with the text data. Furthermore, the location for which the document creation unit 21D creates document data may be selected by the user, or it may be set according to a predetermined output pattern (for example, per floor).

[0051] As shown in Figure 7(b), for example, when creating an inspection form 300 for reinforcement inspection, the document creation unit 21D creates drawing data from the design BIM model that illustrates the shape of member objects such as cross-sectional views of the inspection target area, and outputs it as an inspection form 300 for reinforcement inspection.

[0052] Through this process, document data such as design documents 200 and inspection forms 300 can be created based on the structural information stored in the structural information database 23 and the information contained in the design BIM model.

[0053] (Effect of the embodiment) In this embodiment, structural information applied to the design BIM model is stored in a structural information database 23, separate from the design BIM model shared among multiple personnel. This data management method ensures greater accuracy of structural design data than when structural design data (i.e., structural information) is managed solely using the design BIM model shared among multiple personnel.

[0054] (Effects of the embodiment) (1) When changing the shape or material of a member object included in the design BIM model, first, the DB management unit 21B acquires the second structural information of the member object included in the second analysis model after the design change and updates the structural information database 23. Then, the design BIM management unit 21A updates the structural information of the member object included in the BIM model based on the second structural information stored in the structural information database 23. The design BIM model is created with the shape and placement information of the objects included in the analysis model reflected, and then various design adjustments such as member position adjustments are made. Therefore, if the analysis model is simply imported as a design BIM model each time the member shape is updated, the same design adjustments will be required each time. With this support system 1, only the structural information of the member object can be updated, eliminating the need for further design adjustments in the design BIM model. Therefore, when changing the shape or material of a member object in the design BIM model, the structural information stored in the structural information database 23 can be used to efficiently perform design work using the design BIM model while ensuring the accuracy of the structural design data.

[0055] (2) The matching unit 21C outputs the result of matching the reference structural information extracted from the structural information database 23 with the matching target structural information extracted from the steel frame BIM model. By using the reference structural information, whose accuracy of structural design data is guaranteed, as a reference and comparing it with the matching target structural information extracted from the steel frame BIM model, the accuracy of the verification work of the steel frame BIM model can be improved.

[0056] (3) The matching unit 21C outputs the result of matching the reference placement information extracted from the design BIM model with the matching target placement information extracted from the steel frame BIM model. By using the reference placement information extracted from the design BIM model as a reference and matching it with the matching target placement information extracted from the steel frame BIM model, the placement of member objects can also be matched between the design BIM model and the steel frame BIM model.

[0057] (4) The document creation unit 21D creates drawing data illustrating the shape of member objects based on the design BIM model, and also creates text data relating to member objects based on the structural information in the structural information database 23. This method allows for the creation of text data to be output to the document data based on the structural information in the structural information database 23, which ensures the accuracy of the data.

[0058] (Example of change) This embodiment can be implemented with the following modifications. This embodiment and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0059] The document data generated by the document creation unit 21D may be data files for any document other than the design documents 200 or inspection forms 300. The data that the document creation unit 21D references when generating document data can be appropriately determined depending on the type of document data. For example, it may use only structural information obtained from the structural information database 23, or only information included in the design BIM model, or it may generate document data using other attribute information other than structural information and layout information included in the design BIM model. Furthermore, the document generation process by the document creation unit 21D may be omitted in the support system 1.

[0060] The matching unit 21C may output only the result of matching the reference structural information with the matching target structural information, or it may output only the result of matching the reference placement information with the matching target placement information. Furthermore, in the support system 1, the matching process by the matching unit 21C may be omitted. The BIM model subject to the matching process is not limited to the steel frame BIM model, and matching of the matching target structural information and matching target placement information may be performed in any BIM model (other BIM models) created based on the design BIM model.

[0061] In support system 1, the user terminal 10 and the support device 20 may be implemented as a single device. Each of the user terminal 10 and the support device 20 may be implemented as a single device, or they may be distributed across multiple devices or subsystems.

[0062] In step S13, the DB management unit 21B may, instead of acquiring the first structural information of the first analysis model from the analysis information storage unit 12 of the user terminal 10, acquire the data entered by the user as the first structural information. Similarly, in step S22, the DB management unit 21B may, instead of acquiring the second structural information of the second analysis model from the analysis information storage unit 12 of the user terminal 10, acquire the data entered by the user as the second structural information. In other words, the DB management unit 21B may acquire structural information based on user input in steps S13 and S22. For example, in step S22, the DB management unit 21B may, based on user input, update only the structural information of the changes from the first analysis model to the second analysis model among the structural information stored in the structural information database 23. [Explanation of Symbols]

[0063] H10...Information processing device, H11...Communication device, H12...Input device, H13...Display device, H14...Storage device, H15...Processor, S11~S13, S21~S23...Step, 1...Support system, 10...User terminal, 11...First control unit, 11A...Analysis model creation unit, 11B...Analysis processing unit, 12...Analysis information storage unit, 20...Support device, 21...Second control unit, 21A...Design BIM management unit, 21B...DB management unit, 21C...Verification unit, 21D...Document creation unit, 22...Design BIM storage unit, 23...Structural information database, 30...Steel frame BIM server, 31...Steel frame BIM storage unit, 100...Verification file, 200...Design documents, 300...Inspection forms.

Claims

1. A support system comprising a control unit for assisting in the design of a structure, The control unit, The first structural information of the members included in the first analysis model, which has undergone structural analysis, is obtained and stored in the structural information database. Based on the aforementioned first analysis model, a BIM model is created. The structural information database is updated by obtaining the second structural information of the members included in the second analysis model, which is an updated version of the first analysis model. Based on the second structural information stored in the structural information database, update the members included in the BIM model. Support system.

2. The control unit, The standard structural information stored in the aforementioned structural information database is extracted, The structural information to be compared is extracted from other BIM models created based on the aforementioned BIM model. Output the result of comparing the aforementioned reference structure information with the aforementioned comparison target structure information. The support system according to claim 1.

3. The control unit, Reference placement information for the arrangement of components included in the BIM model is extracted from the BIM model. The matching arrangement information for the arrangement of components included in the aforementioned other BIM model is extracted from the aforementioned other BIM model. Output the result of comparing the aforementioned reference placement information with the aforementioned matching target placement information. The support system according to claim 2.

4. The control unit, Based on the BIM model, drawing data is created that illustrates the shapes of the components included in the BIM model. Based on the structural information stored in the aforementioned structural information database, text data relating to the member is created. The drawing data and the text data are output as document data. The support system according to claim 1.

5. A support method for assisting in the design of a structure using a support system equipped with a control unit, The control unit, The first structural information of the members included in the first analysis model, which has undergone structural analysis, is obtained and stored in the structural information database. Based on the aforementioned first analysis model, a BIM model is created. The structural information database is updated by obtaining the second structural information of the members included in the second analysis model, which is an updated version of the first analysis model. Based on the second structural information stored in the structural information database, update the members included in the BIM model. How to help.

6. A support program that assists in the design of a structure using a support system equipped with a control unit, The control unit, The first structural information of the members included in the first analysis model, which has undergone structural analysis, is obtained and stored in the structural information database. Based on the aforementioned first analysis model, a BIM model is created. The structural information database is updated by obtaining the second structural information of the members included in the second analysis model, which is an updated version of the first analysis model. Based on the second structural information stored in the structural information database, it functions as a means to update the members included in the BIM model. Support program.

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