CN108959726B - Method for automatically generating grid BIM model - Google Patents
Method for automatically generating grid BIM model Download PDFInfo
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- CN108959726B CN108959726B CN201810600519.1A CN201810600519A CN108959726B CN 108959726 B CN108959726 B CN 108959726B CN 201810600519 A CN201810600519 A CN 201810600519A CN 108959726 B CN108959726 B CN 108959726B
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- G06F30/00—Computer-aided design [CAD]
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- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
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Abstract
The invention discloses a method for automatically generating a net rack BIM model, which comprises the following steps: creating parameterized component families in the Revit software, outputting a calculation model completed by the structural design software in a text form, extracting information needed for creating a space grid BIM model from the output text file, importing the information file into a Dynamo for Revit space grid generating program, and generating the space grid BIM model. Compared with the traditional space grid modeling method, the method has the advantages of high automation degree, convenient modification, great improvement of design efficiency and achievement quality, and obvious popularization and application value; the method can create the space grid structure of any curved surface, and brings convenience to BIM modeling of the space grid structure.
Description
Technical Field
The invention belongs to the technical field of BIM building modeling, and particularly relates to a method for automatically generating a net rack BIM model.
Background
The modern open building style creates a plurality of large-span or special-shaped buildings, the space grid structure is rapidly developed by virtue of the characteristics of small dead weight, small self-height of the structure and the like, and the space grid structure is widely applied to various large-span venues, transportation hubs and large-scale commercial complexes.
With the rapid development of BIM technology in recent years, developing space truss design based on BIM technology is a requirement for deepening and optimizing design, but when developing space truss BIM design in Revit software, a space truss three-dimensional BIM model meeting the precision requirement needs to be placed at an accurate space position. Because the form, specification and space position of each node and each rod in the space grid structure are not completely the same, the existing BIM software has no convenient method for modeling the space grid, the manual grid model establishment workload is large, the model accuracy after the grid model establishment is difficult to realize the expected effect, is easily influenced by human factors, is not easy to modify, and has an unsatisfactory use effect.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and provides a method for automatically generating a grid BIM model, which can automatically generate the space grid BIM model in Revit software by inputting data in a calculation model completed by structural calculation software into a space grid automatic modeling program compiled by Dynamo in a text form, has the advantages of high automation degree, convenience and accuracy in establishing the space grid structure, convenience in modification, great improvement of design efficiency and achievement quality, obvious popularization and application value, and can create the space grid structure with any curved surface, thereby bringing convenience to BIM modeling of the space grid structure.
In order to solve the technical problems, the invention adopts the following technical scheme:
the method for automatically generating the grid BIM model is characterized by comprising the following steps of:
(a) Creating a parameterized component family capable of changing the geometric shape of the model by inputting parameters in Revit software, wherein the parameterized component family comprises space grid nodes and rods in different forms;
(b) The user calculates the space grid structure through the structure calculation software, and then derives the parameters of the space grid calculation model of any curved surface completed in the structure calculation software into a text format;
(c) Extracting information related to creating a space truss BIM model from a text file derived by the structure calculation software, and converting the information into a csv format for storage, wherein the information related to creating the space truss BIM model comprises a node specification and a space position, and a rod form, a specification and a space position;
(d) Inputting the parameterized component family in (a) and the csv file in (c) into Dynamo, running Dynamo for the automatic modeling program of the space grid, and completing BIM model creation of the space grid in the Revit software.
Further, the set of space-frame parameterized components created in step (a) comprises a set of bolt balls, a set of ribless weld balls, a set of annular rib weld balls, a set of bolt ball taper pins, a set of bolt ball seal pins, a set of weld ball tie pins, and a set of bottom brackets.
Further, the structure calculation software in step (b) includes MSTCAD and 3D3S.
Further, the csv file created in step (c) contains bolt ball position and specification, weld ball position and specification, rod position and specification, cone head, seal plate, and sleeve information.
Further, step (d) comprises the steps of:
(d1) Extracting spatial position information of a spatial grid node component in the csv file, generating points by an operation program according to x, y and z coordinates, extracting spatial position information of a spatial grid rod piece in the csv file, connecting left nodes and right nodes of the corresponding rod piece into a line, and generating a line model of the spatial grid;
(d2) Extracting (d 1) the node position of the space grid line model, placing parameterized node components, extracting node component information in the csv file, modifying the specification and the shape of the node components, and generating a space grid line node component model in Revit software;
(d3) Extracting (d 1) the position of a space grid line model rod member, placing a parameterized rod member, and extracting information in a csv file to modify the form, specification, shape and length of the rod member;
(d4) And (3) the running program finishes the steps (d 2) and (d 3), returns to the Revit software interface, and finishes the creation of the space network frame BIM model.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the method can automatically establish the space grid structure of any curved surface in Revit according to model calculation data output by the structure calculation software, and brings convenience for establishing a BIM model in the design process of the space grid of the steel structure.
2. The components in the BIM model which is finally generated are component families drawn in Revit software, so that the components can be selected and edited, and parameters can be added at will, thereby realizing the management of the BIM construction site in the later period;
3. the BIM model of the space net rack is automatically generated by program identification and calculation software data, so that manual intervention is less, personal errors are reduced, the space net rack model is accurately and conveniently created, and meanwhile, the advantages of a computer are fully exerted;
4. the information statistics function of the Revit software is utilized to rapidly count the types, specifications and quantity of the components of the whole project, and the space positions of the components are automatically inquired according to a component detail table;
5. when the design is changed, the model can be updated only by reintroducing the csv data, so that the repeated labor of re-establishing the model once by adjusting the height of the net rack in the past is avoided, designers are relieved from the complicated modeling work, and the working efficiency is greatly improved.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is an application environment diagram of a method for automatically generating a grid BIM model according to the present invention;
FIG. 2 is a detailed step diagram of step (d) of the present invention;
FIG. 3 is a schematic view of the two-end seal plate lever after construction according to the present invention;
FIG. 4 is a schematic view of the two-end tapered rod piece after construction according to the present invention;
FIG. 5 is a schematic view of the structure of the rod of the sealing plate with one end welded after the construction of the invention;
FIG. 6 is a schematic view of the structure of the built end-to-end bit rod member;
FIG. 7 is a schematic view of the structure of the bolt ball after the present invention is established;
FIG. 8 is a schematic diagram of the structure of the automatically generated space truss BIM model of the present invention.
Detailed Description
As shown in FIG. 1, the method for automatically generating the grid BIM model can be used for creating the whole space grid structure BIM model comprising the components such as a bolt ball, a welding ball, a conical head rod piece welded at one end, a sealing plate rod piece welded at one end, conical head rod pieces at two ends, sealing plate rod pieces at two ends and the like. The invention takes a space net frame with both ends being bolt balls and connected by conical head rod pieces as an example. The method specifically comprises the following steps:
(a) A family of parameterized building blocks capable of altering the geometry of the model by inputting parameters is created in the Revit software, the family of parameterized building blocks comprising different forms of spatial grid node building blocks and rods.
The created family of space grid parameterized components may include a family of bolt balls, a family of ribless welded balls, a family of annular rib welded balls, a family of bolt ball taper pins, a family of bolt ball seal plates, a family of welded ball tie bars, and a family of bottom standoffs. All of the components described above are families of parameterized components in the Revit software, the geometry of which can be changed by inputting control parameters.
(b) The user performs spatial grid structure calculation through structure calculation software, and the calculation software can comprise MSTCAD, 3D3S and the like. And then, exporting the parameters of the arbitrary curved space net rack calculation model completed in the structure calculation software into a text format and exporting the parameters into log format data.
(c) And extracting information related to the creation of the space truss BIM model from a text file derived by the structure calculation software, converting the information into a csv format, and storing the information related to the creation of the space truss BIM model, wherein the information related to the creation of the space truss BIM model comprises a node specification and a space position, and a rod form, a specification and a space position. The csv file contains bolt ball position and specification, weld ball position and specification, rod position and specification, bit, seal plate and sleeve information.
The node member coordinates comprise spatial position information of the node member, the node member diameter comprises diameter information of the node member, the rod member coordinates comprise spatial position information of the rod member, the rod member diameter comprises diameter of the rod member and high-strength bolt information, and the cone head, the sealing plate and the sleeve information comprise geometric information of the cone head and the sleeve in the two-end bolt ball cone head rod and geometric information of the sealing plate and the sleeve in the two-end bolt ball sealing plate rod.
(d) Inputting the parameterized component family in (a) and the csv file in (c) into Dynamo, running Dynamo for the automatic modeling program of the space grid, and completing BIM model creation of the space grid in the Revit software.
As shown in fig. 2, a detailed step diagram of step (d):
(d1) The space grid bolt ball space position information in the csv file is extracted, and the running program generates points according to the x, y and z coordinates. MSTCAD defaults to using the left hand coordinate system, should multiply the extracted z coordinate value by-1. And then extracting the rod position and the information of the space grid rod spatial position in the csv file, and connecting the left node and the right node of the corresponding rod into a line to generate a line model of the space grid.
(d2) And (d 1) extracting node coordinates of the space grid line model, placing parameterized bolt balls, extracting positions and specifications of the bolt balls, and modifying the shape of the node member by the diameter of the bolt balls in the csv file to generate a space grid line node member model in Revit software.
(d3) And (d 1) extracting the position of the space grid line model rod piece, and extracting information of the bolt ball taper head and the sleeve, wherein the information in the csv file modifies the pipe diameter, the wall thickness, the high-strength bolt diameter, the taper head and the sleeve parameters of the bolt ball taper head rod. The information in csv file modifies the pipe diameter, wall thickness, high strength bolt diameter and sealing plate and sleeve parameters of the bolt ball sealing plate rod.
(d4) And (3) the running program finishes the steps (d 2) and (d 3), returns to the Revit software interface, and finishes the creation of the space network frame BIM model.
As shown in fig. 3 to 7, the BIM model of the whole space grid structure in the invention comprises the components of a bolt ball, a conical head rod piece welded at one end, a sealing plate rod piece welded at one end, conical head rod pieces at two ends, sealing plate rod pieces at two ends and the like; FIG. 8 is a schematic diagram of the automatic modeling program of the space truss BIM model according to the present invention.
According to the invention, the data in the calculation model completed by the structure calculation software can be input into the space grid automatic modeling program compiled by Dynamo in a text form, and the space grid BIM model can be automatically generated in the Revit software, so that the space grid BIM model can be quickly, conveniently and accurately established, has the effects of high automation degree, convenience in modification, great improvement of design efficiency and achievement quality, has obvious popularization and application values, can be used for establishing the space grid structure with any curved surface, and brings convenience to BIM modeling of the space grid structure.
The beneficial effects of the invention are as follows:
1. the method can automatically establish the space grid structure of any curved surface in Revit according to model calculation data output by the structure calculation software, and brings convenience for establishing a BIM model in the design process of the space grid of the steel structure.
2. The components in the BIM model which is finally generated are component families drawn in Revit software, so that the components can be selected and edited, and parameters can be added at will, thereby realizing the management of the BIM construction site in the later period;
3. the BIM model of the space net rack is automatically generated by program identification and calculation software data, so that manual intervention is less, personal errors are reduced, the space net rack model is accurately and conveniently created, and meanwhile, the advantages of a computer are fully exerted;
4. the information statistics function of the Revit software is utilized to rapidly count the types, specifications and quantity of the components of the whole project, and the space positions of the components are automatically inquired according to a component detail table;
5. when the design is changed, the model can be updated only by reintroducing the csv data, so that the repeated labor of re-establishing the model once by adjusting the height of the net rack in the past is avoided, designers are relieved from the complicated modeling work, and the working efficiency is greatly improved.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications and the like made on the basis of the present invention to solve the substantially same technical problems and achieve the substantially same technical effects are included in the scope of the present invention.
Claims (4)
1. The method for automatically generating the grid BIM model is characterized by comprising the following steps of:
(a) Creating a parameterized component family capable of changing the geometric shape of the model by inputting parameters in Revit software, wherein the parameterized component family comprises space grid nodes and rods in different forms;
(b) The user calculates the space grid structure through the structure calculation software, and then derives the parameters of the space grid calculation model of any curved surface completed in the structure calculation software into a text format;
(c) Extracting information related to creating a space truss BIM model from a text file derived by the structure calculation software, and converting the information into a csv format for storage, wherein the information related to creating the space truss BIM model comprises a node specification and a space position, and a rod form, a specification and a space position;
(d) Inputting the parameterized component family in (a) and the csv file in (c) into Dynamo, running a Dynamofor Revit space grid automatic modeling program, and completing BIM model creation of the space grid in Revit software;
the method comprises the following steps:
(d1) Extracting spatial position information of a spatial grid node component in the csv file, generating points by an operation program according to x, y and z coordinates, extracting spatial position information of a spatial grid rod piece in the csv file, connecting left nodes and right nodes of the corresponding rod piece into a line, and generating a line model of the spatial grid;
(d2) Extracting (d 1) the node position of the space grid line model, placing parameterized node components, extracting node component information in the csv file, modifying the specification and the shape of the node components, and generating a space grid line node component model in Revit software;
(d3) Extracting (d 1) the position of a space grid line model rod member, placing a parameterized rod member, and extracting information in a csv file to modify the form, specification, shape and length of the rod member;
(d4) And (3) the running program finishes the steps (d 2) and (d 3), returns to the Revit software interface, and finishes the creation of the space network frame BIM model.
2. The method for automatically generating a grid BIM model according to claim 1, wherein: the set of space-frame parameterized components created in step (a) comprises a set of bolt balls, a set of ribless welded balls, a set of annular rib welded balls, a set of bolt ball taper pins, a set of bolt ball seal pins, a set of welded ball tie pins, and a set of bottom mounts.
3. The method for automatically generating a grid BIM model according to claim 1, wherein: the structure calculation software in step (b) includes MSTCAD and 3D3S.
4. The method for automatically generating a grid BIM model according to claim 1, wherein: the csv file created in step (c) contains bolt ball position and specification, weld ball position and specification, rod position and specification, cone head, seal plate and sleeve information.
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| CN111611633A (en) * | 2020-01-09 | 2020-09-01 | 中南建筑设计院股份有限公司 | Rapid modeling method based on Revit and Dynamo parameterized latticed shell structure model |
| CN111797451B (en) * | 2020-05-30 | 2024-05-03 | 国网上海电力设计有限公司 | BIM-based overhead line model construction method |
| CN112329090A (en) * | 2020-10-10 | 2021-02-05 | 河南建祥装饰工程有限公司 | Steel truss parametric modeling and calculating method based on BIM |
| CN113204835B (en) * | 2020-12-21 | 2024-04-19 | 中铁建工集团有限公司 | Method for realizing deviation correction and typesetting of shield pipe ring by utilizing Dynamo |
| CN113434944B (en) * | 2021-06-30 | 2023-03-24 | 浙江大东吴建筑科技有限公司 | Method for automatically generating structure construction drawing based on Revit and Dynamo |
| CN114091157B (en) * | 2021-11-24 | 2024-04-30 | 中国电力工程顾问集团东北电力设计院有限公司 | Dynamo-based steel grid column modeling method |
| CN114818073A (en) * | 2022-04-29 | 2022-07-29 | 中煤科工重庆设计研究院(集团)有限公司 | Modeling method and system based on 3D3S |
| CN115270249A (en) * | 2022-07-14 | 2022-11-01 | 中铁四局集团第四工程有限公司 | Three-dimensional scanning data and BIM model registration method |
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