CN114722477A - BIM design method for curve steel box bridge to generate curve mode from top to bottom - Google Patents
BIM design method for curve steel box bridge to generate curve mode from top to bottom Download PDFInfo
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- CN114722477A CN114722477A CN202210455013.2A CN202210455013A CN114722477A CN 114722477 A CN114722477 A CN 114722477A CN 202210455013 A CN202210455013 A CN 202210455013A CN 114722477 A CN114722477 A CN 114722477A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 26
- 239000010959 steel Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000000605 extraction Methods 0.000 claims description 24
- 239000011159 matrix material Substances 0.000 claims description 18
- 238000005192 partition Methods 0.000 claims description 4
- 230000002194 synthesizing effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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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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- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/12—Geometric CAD characterised by design entry means specially adapted for CAD, e.g. graphical user interfaces [GUI] specially adapted for CAD
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Abstract
The invention relates to the field of steel structure engineering design and manufacture, and provides a BIM design method in a curve generation mode of a curve steel box bridge from top to bottom in order to modify a BIM model, wherein different parts are stored into different files, and a final model is generated by using the files; when the model is changed, the corresponding file is changed without modeling again; the scheme is more suitable for the situation without electronic version drawings, and when a 3D curve is drawn at the same time, the data is directly used for data generation in the BIM software instead of being generated through CAD and copied to the BIM software, so that the use is more convenient.
Description
Technical Field
The invention relates to the field of steel structure engineering design and manufacture, in particular to a BIM design method for generating a curve mode of a curve steel box bridge from top to bottom.
Background
In the BIM establishment of the curved steel box bridge, the difficulty is high, and more manpower and longer time are required for establishment. The manufacture and installation of the curved steel box bridge often meet the conditions of road design line change, manufacture section change, hoisting section change and the like, at the moment, the BIM model can be only created again, and great influence is caused on steel purchasing, construction period and the like.
Disclosure of Invention
In order to modify the model, the application provides a BIM design method for generating a curve mode of a curve steel box bridge from top to bottom.
The technical scheme adopted by the invention for solving the problems is as follows:
the BIM design method for generating the curve mode of the curve steel box bridge from top to bottom comprises the following steps:
step 3, synthesizing 3D coordinate data of the steel box bridge curve according to the first extraction lattice and the corresponding coordinates of the second extraction lattice;
step 4, generating a space curve in the SolidWorks according to the 3D coordinate data, and respectively copying all curves in the plane graph to different files of SolidWorks software to generate different curve models;
step 6, generating each curved surface model according to the primary control files, and respectively storing the curved surface models in a plurality of newly-built secondary control files;
step 7, generating a part entity according to the secondary control file;
step 8, introducing one or more control files convenient for positioning, and generating the rest part entities except for the step 7, wherein the control files convenient for positioning comprise a primary control file and a secondary control file;
step 9, respectively storing the part entities generated in the step 7 and the step 8 in a plurality of newly-built part files;
and step 10, generating a final model according to the part file.
Further, the design data is coordinate point information or a curve equation.
Further, the first extraction dot matrix is the intersection point of the diaphragm control line and all the control lines in the plan view; the second extraction dot matrix is the intersection point of the diaphragm control line and the elevation curve.
Further, the surface model includes: top plate curved surface, bottom plate curved surface, web curved surface, horizontal partition plate face and vertical stiffening rib curved surface.
Further, the step 6 further includes: and respectively generating an optimized surface model according to the secondary control files, and respectively storing the optimized surface models in a plurality of newly-built second secondary control files.
Furthermore, the optimized curved surface model further comprises a diaphragm manhole, an overwelding hole and a longitudinal stiffening rib hole on the basis of the curved surface model.
Compared with the prior art, the invention has the beneficial effects that: the method can be used for modifying the model in a self-adaptive manner if the road design line and the steel box bridge segment are changed in the modeling process or after the modeling is finished by referring the file, and the model is not required to be completely re-created, so that the influence of the change on the construction period is reduced, the operation is simple and convenient, the adaptability is good, and the method is applicable to other curved surface steel structures besides the BIM creation of the curved surface bridge structure. The scheme is more suitable for the condition that no electronic version drawing or only a design equation is provided, and when the 3D curve is drawn, the data is directly used in the BIM software instead of being generated through CAD and copied to the BIM software, so that the use is more convenient.
Drawings
FIG. 1 is a flow chart of a BIM design method from top to bottom in a curve generation manner of a curve steel box bridge;
FIG. 2 is a schematic diagram of a first extraction lattice;
FIG. 3 is a schematic diagram of a second extraction lattice;
FIG. 4 is a schematic diagram of the contents of a file named "Curve 1 import coordinates. sldcrv";
FIG. 5 is a schematic diagram of a system interface named SLDPRT 01 level one control file;
FIG. 6 is a schematic diagram of a system interface named "02 level one control File. SLDPRT";
FIG. 7 is a schematic diagram of a system interface named "03 Secondary control File. SLDPRT";
FIG. 8 is a schematic view of a system interface corresponding to a backplane component;
FIG. 9 is a schematic view of a system interface corresponding to a bulkhead part;
FIG. 10 is a schematic view of a system interface corresponding to the curve steel box bridge BIM.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in FIG. 1, the BIM design method for generating the curve mode of the curve steel box bridge from top to bottom comprises the following steps:
step 3, synthesizing 3D coordinate data of the steel box bridge curve according to the first extraction dot matrix and the coordinates of the corresponding second extraction dot matrix;
step 4, generating a space curve in the SolidWorks according to the 3D coordinate data, and respectively copying all curves in the plane graph to different files of SolidWorks software to generate different curve models;
step 6, generating each curved surface model according to the primary control files, and respectively storing the curved surface models in a plurality of newly-built secondary control files; the curved surface model includes: the top plate curved surface, the bottom plate curved surface, the web plate curved surface, the transverse partition plate surface and the longitudinal stiffening rib curved surface;
step 7, generating a part entity according to the secondary control file;
step 8, introducing one or more control files convenient for positioning, and generating the rest part entities except for the step 7, wherein the control files convenient for positioning comprise a primary control file and a secondary control file;
step 9, respectively storing the part entities generated in the step 7 and the step 8 in a plurality of newly-built part files;
and step 10, generating a final model according to the part file.
Further, the step 6 further includes: respectively generating optimized surface models according to the second-level control files, and respectively storing the optimized surface models in a plurality of newly-built second-level control files; the optimized curved surface model further comprises a diaphragm manhole, an overwelding hole and a longitudinal stiffening rib hole on the basis of the curved surface model.
Examples
1. Drawing a plane graph in autocad according to data provided by a paper drawing, and extracting a first extraction dot matrix of plane coordinate data, wherein the first extraction dot matrix is an intersection point of a diaphragm control line and all curves in the plane graph, and is shown in FIG. 2;
2. drawing an elevation curve integrating a designed elevation and a pre-camber in an autocad elevation map, and drawing a second extraction dot matrix for extracting elevation data, wherein the second extraction dot matrix is an intersection point of a diaphragm control line and the elevation curve, and is shown in fig. 3;
3. according to the bridge mileage direction, sequentially extracting plane point coordinates and corresponding elevation point data, and synthesizing 3D coordinates in excel;
4. saving the data synthesized by each curve as a single text file, and using sldcrv as a suffix name, for example, the file can be named as 'curve 1 import coordinate sldcrv', and the file content is shown in fig. 4;
5. importing the 3D coordinate data into SolidWorks to generate a space curve, then converting the curve into a 3D sketch, storing the SolidWorks file, and naming the SolidWorks file as '01 first-level control file, SLDPRT', as shown in FIG. 5;
6. newly building a SolidWorks part file, copying and pasting an autocad plan, converting the autocad plan into a 3D sketch, storing the SolidWorks file, and naming the SolidWorks file as '02 first-level control file SLDPRT', as shown in FIG. 6;
7. creating a SolidWorks part file, introducing the '01 first-level control file, SLDPRT' and the '02 first-level control file, SLDPRT' draft, generating a top plate curved surface, a bottom plate curved surface, a web curved surface, a transverse partition plate surface, a U-shaped rib, an I-shaped rib and other longitudinal stiffening rib section shapes by a curved surface tool, generating a longitudinal stiffening rib curved surface by taking an original design drawing plane design line as a path, and if the longitudinal stiffening rib is not parallel to the original design drawing plane design line, creating a path for generating the stiffening rib curved surface in the '01 first-level control file': namely, the curve of the intersection of the plane curve stretching surface of the stiffening rib and the 3D curved surfaces of the top, the bottom and the web plate; the SolidWorks file is saved and named as '03 second-level control file SLDPRT', as shown in FIG. 7; the original design drawing plane design lines comprise top plate control lines, bottom plate control lines, web plate control lines, diaphragm plate control lines and road design lines;
8. building a SolidWorks part file, introducing a curved surface model in the previous step '03 second-level control file' SLDPRT 'by inserting a part command, on the basis, taking a diaphragm plate at the end part of a bridge as a working surface, creating cutting shapes such as a diaphragm plate manhole, an overwelding hole, a longitudinal stiffening rib hole and the like, generating a cutting curved surface by taking an original design drawing plane design line as a path, simultaneously performing extension cutting on top, bottom and web curved surfaces for cutting the diaphragm plate to obtain an optimized curved surface model, and storing the SolidWorks file, namely' 04 third-level control file 'SLDPRT';
9. newly building a part file, and introducing a '03 secondary control file, SLDPRT', respectively creating top, bottom and web curved surfaces into top, bottom and web curved surface entities by using thickening commands, and respectively storing the top, bottom and web curved surfaces as independent part files; the floor part created in situ is shown in figure 8; the in-situ creation refers to: because the positions of the models in the '03 secondary control file, SLDPRT' and the '03 secondary control file, SLDPRT' are fixed, the positions of the curved surface entities created on the basis of the fixed positions are also determined, and the positions of the curved surface entities do not need to be positioned during later assembly.
10. Newly building a part file, and referring to a '04 third-level control file, SLDPRT', cutting the diaphragm plate by using a relevant curved surface, then using a thickening command to create a diaphragm plate entity, and respectively storing the diaphragm plate entity as an independent part file, wherein the diaphragm plate part created in situ is shown in fig. 9;
11. similarly, a part file is newly built, one or more control files convenient to position are introduced, and parts in other non-control files such as a support base plate and the like are created; the control files convenient to locate in this embodiment are as follows: including "primary control files", "secondary control files", and "tertiary control files".
12. And (3) creating an assembly file, adding all parts into the assembly file, and completing the BIM of the curved steel box bridge, wherein the assembly result is shown in figure 10.
Because the parts are created in situ, the positioning by matching parts is omitted in the process of creating the assembly body, and the time for assembling the model is saved. If the bridge design line or the section is changed, the 'primary control file' is changed, and a file which correspondingly refers to the file subsequently is updated; if the section or arrangement of the longitudinal stiffening rib is changed, the aforementioned 'secondary control file' is changed, and the file which is subsequently and correspondingly referred to in the file is updated; if the related contents such as the process hole and the like are changed, the three-level control file is changed, and the subsequent file which correspondingly refers to the file is updated; if the thickness, the material and the like of the part are changed, the corresponding part file is changed, and the file which is subsequently and correspondingly quoted in the file is updated; when the design is changed, only the corresponding file is required to be changed, and the BIM model does not need to be completely recreated, so that the use is more convenient.
Claims (6)
1. A BIM design method for generating curves of a curved steel box bridge from top to bottom is characterized by comprising the following steps:
step 1, drawing a plan according to design data and calculating a first extraction dot matrix for extracting plane coordinate data;
step 2, drawing an elevation curve in the elevation map according to the design data and calculating a second extraction dot matrix for extracting elevation data;
step 3, synthesizing 3D coordinate data of the steel box bridge curve according to the first extraction lattice and the corresponding coordinates of the second extraction lattice;
step 4, generating a space curve in the SolidWorks according to the 3D coordinate data, and respectively copying all curves in the plane graph to different files of SolidWorks software to generate different curve models;
step 5, storing each curve model as a primary control file respectively;
step 6, generating each curved surface model according to the primary control files, and respectively storing the curved surface models in a plurality of newly-built secondary control files;
step 7, generating a part entity according to the secondary control file;
step 8, introducing one or more control files convenient for positioning, and generating the rest part entities except for the step 7, wherein the control files convenient for positioning comprise a primary control file and a secondary control file;
step 9, respectively storing the part entities generated in the step 7 and the step 8 in a plurality of newly-built part files;
and step 10, generating a final model according to the part file.
2. The top-down BIM design method for the curve generation mode of the curve steel box bridge according to claim 1, wherein the design data is coordinate point information or a curve equation.
3. The BIM design method for generating the curve of the curved steel box bridge in the top-down direction according to claim 1, wherein the first extraction dot matrix is the intersection point of a diaphragm control line and all control lines in a plan view; the second extraction dot matrix is the intersection point of the diaphragm control line and the elevation curve.
4. The method for designing the curve-type steel box bridge BIM from top to bottom according to any one of claims 1 to 3, wherein the curve model comprises: top plate curved surface, bottom plate curved surface, web curved surface, horizontal partition plate face and vertical stiffening rib curved surface.
5. The top-down BIM design method for generating the curve of the curved steel box bridge according to claim 4, wherein the step 6 further comprises the following steps: and respectively generating an optimized surface model according to the secondary control files, and respectively storing the optimized surface models in a plurality of newly-built second secondary control files.
6. The curved steel box bridge girder generation curve type top-down BIM design method according to claim 5, wherein the optimized curved model further comprises diaphragm manholes, overbeld holes and longitudinal stiffening rib holes on the basis of the curved model.
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