Data linking method and data linking system

Abstract

To generate highly consistent model data.SOLUTION: The data linkage method includes a model data storage step in which based on a user's input, a computer stores model data of a model having structural design information data of parts of a structure, a construction information storage step in which based on a user's input, the computer stores the construction information data of the parts, and a data linkage step in which the computer adds the construction information data to the model data and links the model data with the construction information data.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a data linking method and a data linking system. [Background technology]

[0002] Conventionally, in order to manufacture each component that makes up a building, for example, structural design information such as general information about the building, information about materials, and information about the cross-sections of components is stored as a file of a specific format such as an ACCESS file at the time of input, while information regarding the building shape and component arrangement is held as a three-dimensional CAD model at the time of input. When linking with an external system, the information stored as CAD data is output in bulk to a file such as an ACCESS file, thereby forming a database in which all structural design information is unified into a fixed format. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-25152 Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional method of using structural design information as described above, general information, information on materials, information on component cross-sections, building shape, and information on component placement are stored as separate data in different formats, and when linking with an external system, the formats of each data are unified. Therefore, even if a three-dimensional CAD model is held, each data for constructing a building cannot be synthesized into one unified data until linking with an external system. For example, a conversion program is created from the structural body database to each commercially available construction CAD for each business, and data is linked in each commercially available construction CAD. For this reason, there is a problem that since there is no consistency between each commercially available construction CAD, there is a risk that it is not possible to draw construction drawings or manufacturing drawings for parts that are consistent as a whole, or to use them as data for manufacturing parts as they are.

[0005] The present invention has been made in consideration of the above-mentioned problems, and an object of the present invention is to generate data of a model with high consistency. [Means for solving the problem]

[0006] In order to achieve this object, the data linking method of the present invention includes a BIM model generation step of a building in which a BIM processing unit executes BIM software to generate a BIM model of a building based on data input from an input unit, based on a user's input; a model data storage step of storing model data of a model having structural design information data of parts of a structure input when generating the BIM model; and Construction information data storage unit a construction information storage step of storing construction information data of the part; Data link processing unit and a data linking step of adding the construction information data to the model data to link the model data with the construction information data.

[0007] According to this data linking method, the computer adds the construction information data to the model data and links the model data and the construction information data, so that the model data and the construction information data can be linked in correspondence with the model. Therefore, it is possible to generate model data with higher consistency. As a result, it is possible to reduce the labor required for drawing and part manufacturing and shorten the construction period by using the model data with higher consistency.

[0008] The data linking method of the present invention includes a BIM model generation step of a building in which a BIM processing unit executes BIM software to generate a BIM model of a building based on a user's input, based on data input from an input unit, a model data storage step of storing model data of a model having structural design information data of components of the structure input when generating the BIM model, and a model data storage step of storing reinforcement information data indicating a reinforcement state of reinforcing bars in the components based on the user's input. A construction information data storage unit that stores the reinforcement information data A reinforcing bar arrangement information storage step; Data link processing unit and a data linking step of adding the reinforcement bar arrangement information data to the model data to link the model data with the reinforcement bar arrangement information data.

[0009] According to this data linking method, the computer adds the reinforcing bar arrangement information data to the model data and links the model data with the reinforcing bar arrangement information data, so that the data can be linked in correspondence with the model. This makes it possible to generate a model in which reinforcing bars are arranged more accurately. This makes it possible to reduce the labor required for drawing and manufacturing parts by using the data of the model in which reinforcing bars are arranged more accurately.

[0010] The data linking method of the present invention includes a BIM model generation step of a building in which a BIM processing unit executes BIM software to generate a BIM model of a building based on data input from an input unit, based on a user's input; a model data storage step of storing model data of a model having structural design information data of a part of a structure input when generating the BIM model; and a PCa construction method information data storage step of storing PCa construction method information data for updating a configuration of the model for a PCa construction method based on the user's input. A construction information data storage unit that stores the PCa construction method information data PCa construction method memory step to be memorized, Data link processing unit and a data linking step of adding the PCa construction method information data to the structural design information data to link the structural design information data and the PCa construction method information data.

[0011] According to such a data linking method, the computer adds PCa construction method information data to the model data and links the model data and the PCa construction method information data, so that the model data can be linked in correspondence with the model. Therefore, it is possible to generate model data of a model in which each part included in the data is updated to a configuration for the PCa construction method. This allows each part to be digitized in a form in which it is manufactured by PCa.

[0012] This data linking method is characterized in that the construction information data includes reinforcement information data indicating the reinforcement state of the reinforcing bars in the component and PCa construction method information data for updating the configuration of the model for the PCa construction method.

[0013] According to this data linking method, by linking model data, reinforcement information data, and PCa construction method information data in correspondence with a model, it is possible to clearly identify the parts of each component that are manufactured with PCa and the parts that are not PCa, and to generate model data (model data after linking) that shows a model in which reinforcing bars are appropriately arranged for each part.

[0014] This data linking method is characterized in that it generates production drawings for the units of the parts to be manufactured by PCa based on the PCa construction method information data.

[0015] According to this data linking method, in the model data (linked model data) showing a model in which model data and construction information data are linked, rebar is appropriately arranged in the data for the parts to be manufactured using PCa, so that manufacturing drawings can be easily and more accurately generated based on the linked model data.

[0016] In order to achieve the above object, the data linkage system of the present invention is a data linkage system that links data of a model having structural design information data of parts constituting a building with construction information data of the parts, and includes a BIM processing unit that executes BIM software to generate a BIM model of a building based on a user's input, based on data input from an input unit, a model data storage unit that stores model data of the model including the structural design information data input when generating the BIM model, and a computer separate from the BIM processing unit that stores the construction information data of the parts based on the user's input. of The system is characterized by having a construction information data storage unit, and a data linking processing unit separate from the BIM processing unit, which adds the construction information data of the construction information data storage unit to the model data of the model data storage unit and executes a process of linking the model data and the construction information data.

[0017] According to such a data linking system, the model data and the construction information data are linked by adding the construction information data to the model data by the data linking processing unit, so that linked model data showing a more consistent model is generated. Therefore, by using the linked model data with higher consistency, it is possible to reduce the labor required for drawing and manufacturing parts and shorten the construction period. Effect of the Invention

[0018] According to the present invention, highly consistent model data can be generated. [Brief description of the drawings]

[0019] [Figure 1] 1 is an explanatory diagram showing an overview of the configuration of a data linkage system according to an embodiment of the present invention; [Diagram 2] FIG. 13 is a diagram showing reinforcement information data stored in a construction information data storage unit. [Diagram 3] FIG. 13 is a diagram for explaining reinforcement information data. [Figure 4]A diagram showing PCa construction method information data stored in the construction information data storage unit. [Diagram 5] FIG. 13 is a diagram for explaining PCa construction method information data. [Figure 6] FIG. 13 is a diagram showing an image of a BIM model stored in a model data storage unit. [Figure 7] FIG. 2 is a flow diagram showing the flow of processing of the data linkage system of the present embodiment. [Figure 8] FIG. 1 is a visualization of the data after the model preparation step. [Figure 9] This is an image of a visualization of the data after the construction information preparation step. [Figure 10] FIG. 13 is a visualization of the data after the data linking step. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, the target is a reinforced concrete (RC) structure, and an example using a structural design BIM model (hereinafter referred to as a BIM model) as a model will be described in detail with reference to the drawings. ===BIM Model Overview===

[0021] First, a brief overview of the BIM model that is the basis for explaining the present invention will be provided.

[0022] A BIM (Building Information Modeling) model is a (3D) model of a building generated on a computer, and is a model of the assembly of parts that make up a building. Traditionally, 3D CAD has been used as a 3D building model, but 3D CAD often only has information about the shape. In contrast, a BIM model has structural design information data (position information of parts such as frame diagram position and floor plan position, cross-section information of parts, etc.) for each part that makes up a building. Furthermore, the number of parts can be calculated for the entire model. For example, for the "beams" of a building, shape information such as length, information on the position where the beam is placed in the building, and information (attribute information) such as the name (model number) and specifications of the beam are registered in the computer. This BIM model can be used to conduct technical studies such as building design. === Implementation form ===

[0023] FIG. 1 is an explanatory diagram showing an outline of the configuration of a data linkage system according to this embodiment.

[0024] The data linkage system 1 shown in Figure 1 includes a BIM processing unit 10 that executes software for a BIM model 11 (hereinafter also referred to as BIM software), a model data storage unit 20 that stores data (hereinafter also referred to as model data) 12 of the BIM model 11 as a model having structural design information data 13, a construction information data storage unit 30 that stores construction information data 14 of parts that make up a building (columns, beams, etc.), and a data linkage processing unit 40 that adds the construction information data 14 to the model data 12 and executes processing to link the model data 12 and the construction information data 14.

[0025] Each of these units (BIM processing unit 10, model data storage unit 20, construction information data storage unit 30, data linkage processing unit 40) is realized by a computer or a server device. All of the data linkage system 1 in FIG. 1 may be provided on one computer, or some or each of them may be provided on separate computers and connected via a communication line or the like. For example, the BIM processing unit 10, model data storage unit 20, construction information data storage unit 30, and data linkage processing unit 40 may be provided on different computers, each installed in a separate location, and connected via a communication line or the like, and each computer may be operated by different users to perform input operations.

[0026] The BIM processing unit 10 executes the BIM software based on data input from an input unit (not shown) to generate a BIM model 11 of the building. At this time, the generated model data 12 includes data on the BIM model 11 itself and structural design information data 13 input when the BIM model is generated. The structural design information data 13 includes shape information such as dimensions of each part (columns, beams, etc.) constituting the building and information on reinforcing bars (reinforcing bar information) arranged in each part, and the structural design information data 13 can be stored in the model data storage unit 20 in Excel format or the like. The reinforcing bar information is, for example, the diameter and number of main bars, the diameter and shape of stirrups, etc., and these pieces of information are input by the user at the time of designing to generate the BIM model 11. The model data 12 including the structural design information data 13 is stored in the model data storage unit 20 based on the user's input.

[0027] The construction information data 14 is data that is linked to the model data 12 having rebar information corresponding to each component, and includes reinforcement information data 15 indicating the position of rebar, and PCa (Precast Concrete) construction information data 16 for manufacturing PCa components when constructing a building using the PCa method.

[0028] The reinforcement information data 15 includes multiple parameters such as the position where the main reinforcement is arranged and the amount of additional reinforcement, as well as the type of anchorage of the beam 3, the length of the straight part of the anchorage (horizontal projection length), and the extra length after bending, and is defined by the user inputting the parameters in Excel format as shown in Fig. 2. The reinforcement information data 15 is stored in the construction information data storage unit 30 based on the user input. The construction information data 14 for the beam 3 will be explained below as an example.

[0029] For example, when reinforcing bars are arranged as shown in Fig. 3 for a beam 3 spanning a pair of adjacent columns 2 spaced apart from each other, the type of anchorage for the beam 3 is bent anchorage, and the length (L1) of the straight part of the anchorage numbered "37" in Fig. 3 is input as 1120 mm as shown in Fig. 2, and the extra length after bending (L2) numbered "38" is input as 256 mm as shown in Fig. 2, and the spacing between the main bars and the amount of concrete to be poured are also input, not shown. In this case, when the type of anchorage is straight anchorage, "0" is input in the extra length after bending (L2) column.

[0030] As for the input method, in addition to inputting numerical values, if the length of the straight part of the fastening (L1) and the extra length after bending (L2) are standardized, reference data that associates standard values ​​with numbers and symbols, etc., can be compiled into a database, and the associated numbers and symbols can be input, or the extra length that is standardized as a reinforcement rule can be input as a multiple of the rebar diameter, for example, "15d" (d: rebar diameter). Also, if the fastening type is a mechanical joint, reference data that associates the name of the joint with numbers and symbols, etc. can be compiled into a database, and the associated numbers and symbols can be input.

[0031] The PCa construction information data 16 is, for example, information on the columns 2 and beams 3 that are required when constructing the BIM model 11 using the PCa construction method.

[0032] The PCa construction information data 16 for each beam 3 includes multiple parameters such as the number of members constituting the beam 3, the type of each member, the position (length) of the members, the joint width, and the protruding length from the joint portion for one beam 3 that is spanned between a pair of adjacent columns 2 spaced apart from each other among the multiple beams 3, and is defined by the user inputting the parameters in Excel format as shown in Fig. 4. The PCa construction information data 16 is stored in the construction information data storage unit 30 based on the user's input.

[0033] For example, the PCa construction information data 16 will be described as an example when a column-beam structure in which three beams 3A, 3B, and 3C are spanned between four columns 2A, 2B, 2C, and 2D as shown in Fig. 5(a) is converted to PCa construction by the configuration as shown in Fig. 5(b). The four columns 2A, 2B, 2C, and 2D in Fig. 5(a) and Fig. 5(b) are described as the first column 2A, the second column 2B, the third column 2C, and the fourth column 2D from the left, and the three beams 3A, 3B, and 3C arranged between the first column 2A and the fourth column 2D are described as the first beam 3A, the second beam 3B, and the third beam 3C from the left. In addition, the left side of each beam 3A, 3B, and 3C is the starting point, and the right side is the end.

[0034] In the PCa construction method information data 16, information defining each parameter is input by the user for each of the beams 3A, 3B, and 3C, as shown in Fig. 4. For example, the parameters defined are the type of each beam part at the start end, center, and end end, the length of the joint at the start end, center, and end end, the protruding length of the rebar in each beam part at the start end and end end, and the division position of each beam part at the start end and end end.

[0035] The types of beam sections include beam sections that are not integrated with the column joints (Type A), beam sections that are integrated with the column joints (Type B), beam sections that are constructed using conventional construction methods (Type C), and cases where no central beam section is provided (-), and are defined by inputting a set number. Note that for the length of the joints at the start, center, and end, the protruding length of the rebar in each beam section at the start and end, and the division position of each beam section at the start and end, the length can be input as a numerical value, or, if standardized, a database of reference data that associates standard values ​​with numbers and symbols can be created, and the associated numbers and symbols can be input.

[0036] For example, in the PCa construction method information data 16 shown in FIG. 4, a second beam 3B is defined. In the PCa construction method information data 16 shown in Fig. 4, the second beam 3B has a value "2" indicating "Type B" input as the start end PCa member type for the beam section 3B-1 at the start end, a value "2" indicating "Type B" input as the end end PCa member type for the beam section 3B-2 at the end end, and a value "3" indicating that there is no central beam section input as the central PCa member type indicating the central beam section. Note that the PCa construction method information data 16 of this embodiment also defines that each of the columns 2A, 2B, 2C, and 2D is divided into a column main body section 2-2 (Fig. 7) arranged between the joint sections 2A-1, 2B-1, 2C-1, and 2D-1.

[0037] In addition, in the PCa construction method information data 16 shown in Fig. 4, the user has input information that the starting member division position (length from the second column 2B) is 2000 mm, and the end member division position (length from the third column 2C) is 2000 mm. This defines that the second beam 3B is divided into two parts, a beam section 3B-1 on the starting side and a beam section 3B-2 on the end side, each having a length of 2000 mm from the joint sections 2B-1 and 2C-1.

[0038] In addition, in the PCa construction method information data 16 shown in Fig. 4, the value "0" is input as the start joint width and the end joint width, and the value "20" is input as the center joint width. This defines that no joints are provided between the joint portion 2B-1 and the beam portion 3B-1 on the start side, and between the beam portion 3B-2 on the end side and the joint portion 2C-1, and that a joint with a joint width of 20 mm is provided between the beam portion 3B-1 on the start side and the beam portion 3B-2 on the end side.

[0039] The first beam 3A and the third beam 3C are also defined by the PCa construction method information data 16. The first beam 3A is defined to be divided into two parts, a beam section 3A-1 on the start side and a beam section 3A-2 on the end side, with the beam section 3A-1 on the start side being constructed by the conventional construction method and the beam section 3A-2 on the end side being defined as a beam section manufactured by PCa, integrated with the joint section 2B-1 of the second column 2B. Based on these definitions, the beam section 3B-1 on the start side of the second beam 3B is defined as a member manufactured by PCa, integrated with the joint section 2B-1 of the second column 2B together with the beam section 3A-2 on the end side of the first beam 3A.

[0040] The third beam 3C is defined as being divided into three parts: a beam section 3C-1 at the start end, a beam section 3C-2 at the end end, and a central beam section 3C-3 located between the beam section 3C-1 at the start end and the beam section 3C-2 at the end end. The beam section 3C-1 at the start end is defined as a beam section manufactured by PCa integrally with the joint section 2C-1 of the third column 2C, the central beam section 3C-3 is constructed by a conventional construction method, and the beam section 3C-3 at the end end is defined as a beam section manufactured by PCa integrally with the joint section 2D-1 of the fourth column 2D. Therefore, the beam section 3C-1 at the start end of the third beam 3C is defined as a member manufactured by PCa integrally with the joint section 2C-1 of the third column 2c together with the beam section 3B-2 at the end end of the second beam 3B. Additionally, beam portion 3C-2 at the end of the third beam 3C is defined as a component manufactured from PCa, integrated with beam portion 3D-1 at the start of the fourth beam 3D and joint portion 2D-1 of the fourth column 2D.

[0041] The model data storage unit 20 and the construction information data storage unit 30 are configured by a storage device such as a hard disk, and also store programs (software) for executing the operations of each unit. The model data storage unit 20 and the construction information data storage unit 30 may be in a form in which the areas are separated in a single storage unit.

[0042] Next, a data linking method will be described. In the data linking method, first, a BIM model 11 of a structure to be constructed, for example as shown in Fig. 6, is generated by a BIM processing unit 10 in the design stage in response to user input and operation, and model data 12 in which structural design information data 13 of each component (column 2, beam 3) is added to the BIM model 11 is stored in a model data storage unit 20 (model storage step S1) as shown in Fig. 7. In the model storage step S1, it is sufficient that the model data 12 is stored in the model data storage unit 20 in response to user input and operation, and it is not necessary that the process of modeling the BIM model 11 is included.

[0043] Next, the construction information data 14 such as the reinforcement information data 15 and the PCa construction method information data 16 are stored in the construction information data storage unit 30 by the user inputting information defining each parameter from an input means set in Excel format (construction information storage step S2). At this time, the reinforcement information data 15 may be generated by the user inputting reinforcement information into an automatic reinforcement optimization system such as Great Monster, which is an existing software, and the reinforcement information data 15 may be stored in the construction information data storage unit 30 as the construction information data 14.

[0044] Next, based on a command signal for executing data linkage by a user's operation, the data linkage processing unit 40 executes a process for adding the construction information data 14 to the model data 12 and linking them (data linkage step S3). The data linkage processing unit 40 does not necessarily need to rewrite the BIM model 11 and visualize the linked BIM model, but for ease of understanding, the state of the model data linked by the process executed by the data linkage processing unit 40 will be explained by visualizing it as shown in Figs. 8 to 10.

[0045] The data linking processor 40 first divides the column-beam structure shown in Fig. 6 into parts, i.e., columns 2, beams 30, 31, 32, joint parts 2-1, column main body parts 2-2, etc., as shown in Fig. 8 (parts division step S31). At this time, if it is necessary to divide one beam 30, 31, 32 into multiple parts based on the PCa construction method information data 16, the target beams 30, 31, 32 are divided into multiple beam parts 30-2, 31-1, 31-2, 32-1.

[0046] Next, the data linking processing unit 40, based on the PCa construction information data 16, identifies beam section 30-2 and beam section 31-1, and beam section 31-2 and beam section 32-1 that will be integrated into one PCa member when manufactured using PCa, for the divided beam sections 30-2, 31-1, 31-2, and 32-1, and integrates them into PCa members 300, 301 manufactured using PCa as shown in Figure 9 (integration step S32).

[0047] Next, the data linking processor 40, based on the reinforcing bar information data included in the structural design information data 13 and the reinforcement bar arrangement information data 15 included in the construction information data 14, arranges the reinforcing bars 5 (reinforcing bar arrangement step S33) as shown in Fig. 10 to generate linked model data in which reinforcement bars are arranged for each of the PCa members 300, 301 and other members. At this time, reinforcement bars are arranged for each of the PCa members 300, 301 manufactured by PCa, the reinforcing bars 5 of adjacent members are arranged based on the fixing type, and the reinforcing bars 5 are arranged by protruding from the columns 2 and the PCa members 300, 301 where necessary. At this time, sleeves 6 (Fig. 5(b)) that fix the reinforcing bars 5 to each other are also arranged.

[0048] Thus, according to the data linking method and data connection system 1 of this embodiment, reinforcement information data 15 and PCa construction method information data 16 are added to the model data 12 as construction information data 14, and the model data 12 is linked with the reinforcement information data 15 and the PCa construction method information data 16, so that the model data 12 can be linked with the reinforcement information data 15 and the PCa construction method information data 16 in correspondence with the BIM model 11.

[0049] Therefore, since the BIM model 11 with linked data has accurate modeling of the reinforcement of the columns 2, beams 3, etc., it is possible to generate model data of a more consistent linked BIM model. This makes it possible to reduce the labor required for drawing and manufacturing parts by using the model data of the more consistent linked BIM model.

[0050] Furthermore, when data on each of the PCa members 300, 301 manufactured using PCa is extracted from the data-linked BIM model 11, the reinforcement is arranged in a state in which each of the PCa members 300, 301 to be manufactured will be manufactured into a product. Therefore, accurate cross-sectional views and product drawings of each of the PCa members 300, 301 can be easily generated from the model data of the BIM model 11 to which this data is linked.

[0051] In addition, by linking the model data 12 and the construction information data 14, data of the linked BIM model can be generated that can display the state of each manufactured component in a product without necessarily visualizing the BIM model, so that by sharing the model data of the linked BIM model 11 with rebar contractors, formwork manufacturers, PCa factories, and reinforcing bar inspection systems, manufacturing and construction can be performed without creating drawings. At this time, each component is manufactured from the data of a single linked BIM model 11 (linked model data) between each contractor, and construction is performed based on the linked model data, so that the work and effort of manually generating drawings or checking the generated drawings can be eliminated, making it possible to share more accurate data and reduce labor. ===Other embodiments===

[0052] The above-mentioned embodiment is for facilitating understanding of the present invention, and is not intended to limit the present invention. The present invention may be modified or improved without departing from the spirit of the present invention, and it goes without saying that the present invention includes equivalents. In particular, the following embodiments are also included in the present invention. In the above embodiment, a structure made of reinforced concrete has been described as an example, but the present invention is not limited to this and may be a structure made of steel frame or reinforced steel concrete.

[0053] In the above embodiment, a BIM model (BIM data) 11 was used as a model of a building, but this is not limited to a BIM model and may be a model using any digital data, such as a CIM (Construction Information Modeling) model or a CAD model (including 2D CAD).

[0054] In the above embodiment, the structural design information data 13, the reinforcement information data 15, and the PCa construction information data 16 stored based on user input were created in Excel format, but this is not limited to this and may be in other formats. [Explanation of symbols]

[0055] 1 Data linking system 2 pillars (2A 1st pillar, 2B 2nd pillar, 2C 3rd pillar, 2D 4th pillar), 2-1 (2A-1, 2B-1, 2C-1, 2D-1) Joint part, 2-2 Pillar body part, 3 beams (3A 1st beam, 3B 2nd beam, 3C 3rd beam), 4 Joint, 5 Reinforcement bar, 6 Sleeve, 10 BIM processing section, 11 BIM model, 12 Model data, 13 Structural design information data, 14 Construction information data, 15 Reinforcement information data, 16 PCa construction method information data, 20 Model data storage unit, 30 construction information data storage unit, 40 data link processing unit,

Claims

1. a building BIM model generation step in which the BIM processing unit executes the BIM software to generate a BIM model of the building based on the user's input, based on the data input from the input unit; A model data storage step of storing model data of a model having structural design information data of a part of a structure input when the BIM model is generated; A construction information storage step in which a construction information data storage unit stores construction information data of the part based on an input from a user; a data linking step in which a data linking processing unit adds the construction information data to the model data to link the model data with the construction information data; A data linking method comprising:

2. a building BIM model generation step in which the BIM processing unit executes the BIM software to generate a BIM model of the building based on the user's input, based on the data input from the input unit; A model data storage step of storing model data of a model having structural design information data of a part of a structure input when the BIM model is generated; a reinforcement information storage step in which reinforcement information data indicating a reinforcement state of the reinforcing bars in the component is stored in a construction information data storage unit that stores the reinforcement information data based on a user input; a data linking step in which a data linking processing unit adds the reinforcement bar arrangement information data to the model data and links the model data with the reinforcement bar arrangement information data; A data linking method comprising:

3. a building BIM model generation step in which the BIM processing unit executes the BIM software to generate a BIM model of the building based on the user's input, based on the data input from the input unit; A model data storage step of storing model data of a model having structural design information data of a part of a structure input when the BIM model is generated; A PCa construction method storage step in which a construction information data storage unit stores PCa construction method information data for updating the configuration of the model for the PCa construction method based on a user input; A data linking step in which a data linking processing unit adds the PCa construction method information data to the structural design information data to link the structural design information data and the PCa construction method information data; A data linking method comprising:

4. The data linking method according to claim 1 , A data linking method characterized in that the construction information data includes reinforcement information data indicating the reinforcement state of the steel bars in the component and PCa construction method information data for updating the configuration of the model for the PCa construction method.

5. 5. A data linking method, comprising: generating a production drawing of a unit of the part to be manufactured by PCa based on the PCa construction method information data by the data linking method according to claim 3 or 4.

6. A data linking system that links data of a model having structural design information data of components constituting a building with construction information data of the components, a BIM processing unit that executes BIM software to generate a BIM model of a building based on a user's input and on data input from the input unit; A model data storage unit that stores model data of the model including the structural design information data input when the BIM model is generated; A construction information data storage unit of a computer separate from the BIM processing unit that stores construction information data of the parts based on a user's input; A data linking processing unit separate from the BIM processing unit that adds the construction information data of the construction information data storage unit to the model data of the model data storage unit and links the model data and the construction information data; A data linkage system comprising:

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