CN116186860B - Large-span structure drawing method based on BIM - Google Patents
Large-span structure drawing method based on BIM Download PDFInfo
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- CN116186860B CN116186860B CN202310217259.0A CN202310217259A CN116186860B CN 116186860 B CN116186860 B CN 116186860B CN 202310217259 A CN202310217259 A CN 202310217259A CN 116186860 B CN116186860 B CN 116186860B
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Abstract
The application relates to a large-span structure drawing method based on BIM, which comprises the following steps: extracting model data in a structural calculation model file; combing the extracted model data into BIM software usable data; loading family and family type information to generate a structure BIM model; creating a physical model of each component according to the component data information in the structural BIM; calling an analysis model corresponding to the physical model of the component, and respectively endowing a unit number and a node number of the structural calculation model to a unit and a node of the analysis model; the physical model respectively creates a structural layout according to the plane, the elevation and the section; respectively creating node numbering graphs according to planes, vertical planes and sections by the analysis model; creating a construction drawing; and releasing a construction drawing. The method can quickly realize drawing from structural calculation to construction drawing based on BIM, and can clearly express the positioning of the space rod piece.
Description
Technical Field
The application belongs to the technical field of large-span structures of constructional engineering, and particularly relates to a large-span structure drawing method based on BIM.
Background
With the advent of the information age and the development of global economy, a large number of buildings with complex forms are represented in cities. Based on the structural arrangement form of the special-shaped curved surface, the structural arrangement form is expressed in a traditional two-dimensional plane drawing mode and is often difficult to deal with. The development of digital technology, in particular BIM technology, has now brought more solutions to designers.
BIM, building Information Modeling, chinese definition is a building information model, is defined as an engineering data model based on three-dimensional digital technology and integrated with various related information of a building engineering project, and is an exhaustive digital expression of the related information of the engineering project. The BIM-based design method has the characteristics of visualization, synergy, simulation, diagrammability and the like. And combining the models for collaborative design in the same platform by each specialty, and generating a two-dimensional design drawing based on the three-dimensional BIM model.
At present, a three-dimensional BIM model can easily generate plane, elevation and section views of a structural model, and a method is also provided for rapidly realizing labeling aiming at information such as materials, sections and the like of a component. For a large-span structure of special-shaped curved surface modeling, a method commonly used in BIM software is a mode of marking node coordinates or marking sizes at rod member endpoints, and the method is used for solving the problems that the number of rod members is large, drawing marking contents are too much, and drawing expression is disordered. How to quickly mark and clearly express the positioning of hundreds of rods in BIM software is a problem to be solved in designing drawings.
The information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The application aims to provide a large-span structure drawing method based on BIM, which aims to solve the technical problems in the prior art.
In order to achieve the above purpose, the present application adopts the following technical scheme:
the application provides a large-span structure mapping method based on BIM, which comprises the following steps:
s1, extracting model data in a structural calculation model file;
s2, combing the extracted model data into data available to BIM software;
s3, loading family and family type information to generate a structure BIM model;
s4, creating a physical model of each component according to the component data information in the structural BIM;
s5, calling an analysis model corresponding to the physical model of the component, and respectively endowing the unit number and the node number of the structural calculation model to the unit and the node of the analysis model;
s6, the physical model respectively creates a structural layout according to the plane, the vertical plane and the section;
s7, respectively creating node numbering graphs according to planes, vertical surfaces and sections by the analysis model;
s8, creating a construction drawing;
s9, releasing a construction drawing.
Preferably, step S1 includes: writing a plug-in program, and extracting model data in a structural calculation model file, wherein the model data at least comprises the following information: structural units, nodes, coordinates, materials, cross-sections, boundary conditions.
Preferably, step S2 includes: the extracted model data are carded into BIM software usable data, and the BIM software usable data at least comprise the following information: cell number, node number, coordinates, material, family type information, eccentricity, section torsion angle, boundary conditions of the member.
Preferably, step S4 includes: and calling api in BIM software according to the data information of the components, and respectively creating physical models of the components according to the positioning, family and family type, eccentricity and section torsion angle information.
Preferably, step S6 includes: the physical model respectively creates a structural layout according to the plane, the elevation and the section; the structural layout is marked with the contents of the shaft net, the dimension, the section and the section of the component.
Preferably, step S7 includes: the analysis model respectively creates a node numbering diagram according to the plane, the vertical plane and the section, and the node numbers of all analysis nodes are marked in the node numbering diagram.
By adopting the technical scheme, the application has the following beneficial effects:
the application can rapidly realize the drawing method from structural calculation to construction drawing based on BIM, and can clearly express the positioning of the space rod piece.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will briefly explain the drawings needed in the embodiments or the prior art, and it is obvious that the drawings in the following description are some embodiments of the present application and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a structure diagram method provided by an embodiment of the present application;
FIG. 2 is a schematic diagram of a Midas Gen structure calculation model provided by an embodiment of the application;
FIG. 3 is a schematic diagram of a Revit structure physical model according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a Revit structural analysis model according to an embodiment of the present application;
FIG. 5 is a structural layout diagram provided by an embodiment of the present application;
FIG. 6 is a node numbering diagram according to an embodiment of the present application;
FIG. 7 is a component detail table provided by an embodiment of the present application;
fig. 8 is a node coordinate table according to an embodiment of the present application.
Description of the embodiments
The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the application are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The following describes specific embodiments of the present application in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the application, are not intended to limit the application.
To make this embodiment clearer, the technical terms appearing will be explained:
midas Gen: the general analysis and design software is used for structural calculation analysis.
mgt A text-formatted data storage file of Midas Gen software for access to structural calculation model data.
Revit: BIM modeling design software is used for BIM modeling, professional collaboration, plotting and the like.
And (3) calculating a model: the model for structure calculation in the structure analysis software.
Physical model: three-dimensional solid model in Revit software.
Analyzing the model; the line models which are in one-to-one association with the entity models in the Revit software can be used for calculating and analyzing the link structure calculation software.
As shown in fig. 1 to 8, the present embodiment proposes a structure design drawing method based on BIM, which includes the following steps:
step 1: and writing a plug-in program, and extracting information such as structural units, nodes, coordinates, materials, sections, boundary conditions and the like in the structural calculation model file.
Preferably, the example model uses the structure computation software Midas Gen to export model data as mgt file. And programming a Revit plug-in by adopting C# language, and sequentially reading model data such as nodes, units, materials, sections, boundary conditions and the like in a mgt file in a program.
Step 2: the model data obtained by program combing is arranged into data information related to each unit, including unit numbers, node numbers, coordinates, materials, families, family type information, eccentricities, section torsion angles, boundary conditions and the like.
Step 3: and calling the api to finish loading corresponding family and family types in the Revit current document according to the carded family and family type information.
Specifically, first, the loaded families in the current Revit document are traversed, and if there are unloaded families, then the loaded families are manually loaded or automatically loaded according to a predefined file directory. Then traversing the family types under loaded families, and if the unloaded family types exist, building the family types according to the predefined type parameters. Next, the family types to be used in the future are numbered in order, and are entered into "type notes" (note marks "or other custom parameters may be used) of the family type attribute, which numbers are used for component section labeling (see fig. 5) and a list of component sections (see fig. 7) of the structural layout.
Step 4: and (3) according to the data information of each component obtained in the step (2), sequentially calling api to create a physical model of each component in the Revit according to the information of positioning, family and family type, eccentricity, rotation angle and the like.
Step 5: and calling an analysis model corresponding to the component physical model, and respectively assigning the unit number and the node number of the original calculation model to the unit and the node of the analysis model. The physical model and the analysis model in the Revit structural member are in one-to-one correspondence, the analysis model is a simplified expression of the physical model for structural calculation, the model is identical to the expression of the structural calculation model, such as beams and columns are corresponding to rod units, walls and plates are corresponding to surface units, and each unit is positioned by a plurality of nodes.
Step 6: and respectively creating structural arrangement views of all parts according to planes, vertical surfaces, sections and the like by utilizing a three-dimensional BIM model, and marking contents such as an axial network, dimensions, sections, a component section table and the like in the views (see figure 5). Since parameters such as section numbers are added in the group type in advance in step 3, section labeling of each view can be accomplished with one key of the "all labeling" function.
Step 7: and (3) corresponding to each structural arrangement view one by one, creating a three-dimensional structural analysis model view, and marking the node numbers of all analysis nodes. To ensure that the structural layout view is at the same angle as the node number view, the structural layout view can be replicated as a master. Next, the display settings of the view are changed, with the "model category" column selecting all closed, the "analysis model category" column selecting all closed, and the "annotation category" column checking the "analysis node mark". At this point the three-dimensional physical model has been closed and only the corresponding linear analytical model is displayed. The marking of the node number is accomplished using a "all marking" function to select "analyze node marking" one-touch (see fig. 6). The "analysis node mark" family here does not exist in the original Revit, and needs to be customized and loaded by the user in advance.
Step 8: node numbers and coordinate information of the calculation model are extracted, and a node coordinate table (shown in fig. 7) is created and placed in a drawing. Since the analysis model node data for the graph is consistent with the data of the calculation model, the Midas Gen node data table can be directly copied. The data content of the node coordinate table comprises node numbers, X coordinates, Y coordinates and Z coordinates.
Step 9: and arranging the generated various views into related drawings, and publishing the views as pdf and dwg files according to different drawings.
In summary, compared with the prior art, the embodiment has the following characteristics and beneficial effects:
1. the structural calculation model directly generates a three-dimensional BIM model by using a secondarily developed program, so that a large number of repeated modeling works are avoided. The conventional method is to create a calculation model and a BIM model by different personnel, and the BIM model is modeled by referring to a two-dimensional design drawing after the design is completed. And the plug-in units of secondary development are utilized, the conversion is directly carried out by a calculation model, and the modeling process is fast and efficient.
2. According to the application, the node number views of the components are created in one-to-one correspondence by combining the structural arrangement views, the two views are mutually compared, and the positioning expression of the rod piece is clear. By introducing an analysis model, the physical model view and the analysis model view are mutually compared, the three-dimensional model and the section of the physical model view expression component are marked, the node numbers related to the positioning of the analysis model view expression component are combined, and the rapid and clear expression of the rod positioning is realized by combining a node coordinate table.
3. According to the application, from the structural calculation model to the BIM model and to the construction drawing, the model information data are identical, all information conduction is completed by using one key of a program, and the error rate caused by manpower is greatly reduced on the basis of improving the efficiency.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (3)
1. The large-span structure drawing method based on BIM is characterized by comprising the following steps:
s1, extracting model data in a structural calculation model file;
s2, combing the extracted model data into data available to BIM software;
s3, loading family and family type information to generate a structure BIM model;
s4, creating a physical model of each component according to the component data information in the structural BIM;
s5, calling an analysis model corresponding to the physical model of the component, and respectively endowing the unit number and the node number of the structural calculation model to the unit and the node of the analysis model;
s6, the physical model respectively creates a structural layout according to the plane, the vertical plane and the section;
s7, respectively creating node numbering graphs according to planes, vertical surfaces and sections by the analysis model;
s8, creating a construction drawing;
s9, releasing a construction drawing;
the step S2 comprises the following steps: the extracted model data are carded into BIM software usable data, and the BIM software usable data at least comprise the following information: cell number, node number, coordinates, material, family type information, eccentricity, section torsion angle, boundary conditions of the member;
the step S6 comprises the following steps: the physical model respectively creates a structural layout according to the plane, the elevation and the section; marking the contents of the shaft net, the dimension, the section and the section table of the component in the structural layout;
the step S7 includes: the analysis model respectively creates a node numbering diagram according to the plane, the vertical plane and the section, and the node numbers of all analysis nodes are marked in the node numbering diagram.
2. The BIM-based large span structure mapping method of claim 1, wherein step S1 includes: writing a plug-in program, and extracting model data in a structural calculation model file, wherein the model data at least comprises the following information: structural units, nodes, coordinates, materials, cross-sections, boundary conditions.
3. The BIM-based large span structure mapping method of claim 1, wherein step S4 includes: and calling api in BIM software according to the data information of the components, and respectively creating physical models of the components according to the positioning, family and family type, eccentricity and section torsion angle information.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022257099A1 (en) * | 2021-06-09 | 2022-12-15 | 青岛理工大学 | Prefabricated building intelligent drawing output method based on bim |
| CN115525955A (en) * | 2022-10-18 | 2022-12-27 | 成都建筑材料工业设计研究院有限公司 | Intelligent generation method of digital design product with special structure |
| CN115600298A (en) * | 2022-10-31 | 2023-01-13 | 安徽地平线建筑设计有限公司（Cn） | BIM building forward design standardization plotting method based on revit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022257099A1 (en) * | 2021-06-09 | 2022-12-15 | 青岛理工大学 | Prefabricated building intelligent drawing output method based on bim |
| CN115525955A (en) * | 2022-10-18 | 2022-12-27 | 成都建筑材料工业设计研究院有限公司 | Intelligent generation method of digital design product with special structure |
| CN115600298A (en) * | 2022-10-31 | 2023-01-13 | 安徽地平线建筑设计有限公司（Cn） | BIM building forward design standardization plotting method based on revit |
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