CN110489895B - Design method of bridge vase pier capping beam steel template based on BIM technology - Google Patents
Design method of bridge vase pier capping beam steel template based on BIM technology Download PDFInfo
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Abstract
The invention provides a design method of a bridge vase pier capping beam steel template based on a BIM technology, which is characterized in that the vase pier capping beam steel template is designed in a top-down mode, and a three-dimensional model of each designed block steel template is led into an Ansys Workbench to carry out integral stress analysis and design optimization. The method utilizes the advantages of three-dimensional parametric design of the BIM technology, exerts the powerful stress analysis function of the Ansys Workbench finite element software, realizes the full three-dimensional forward design and processing drawing of the steel template, and fully exerts the advantages of various application software. The method solves the problems of low design efficiency, complex change and modification, poor intersection visual effect, poor integration degree of geometric information and non-geometric information and the like of the conventional method, and belongs to the field of building engineering.
Description
Technical Field
The invention relates to a method for designing a steel template of a pier capping beam of a bridge vase based on a BIM (building information modeling) technology, belonging to the field of constructional engineering.
Background
The steel template is used as a common turnover resource in structural concrete construction, generally customized and processed according to the structural design size, CAD (computer-aided design) plane design software is mostly adopted for design at present in China, and a two-dimensional processing diagram, a corresponding material quantity table and other related design achievements are generated on the basis. When a template with a heterogeneous structure is designed, a plurality of detailed design drawings need to be designed, the expression effect is not visual, the requirement on the visibility of designers and construction side technicians is extremely high, construction can be misled by mistake and the defects of low design efficiency, complex change and modification, poor bottom-crossing visual effect, poor integration of geometric information and non-geometric information and the like exist, and the requirement on informatization development of the existing building construction industry can not be effectively met.
Disclosure of Invention
The invention provides a method for designing a bridge vase pier capping beam steel template based on a BIM (building information modeling) technology, which aims to solve the problems of low design efficiency, complex change and modification, poor intersection visual effect, poor integration of geometric information and non-geometric information and the like of the conventional method.
In order to solve the problems, the design method of the bridge vase pier capping beam steel template based on the BIM technology is designed, and the specific method is as follows:
1) parameterized model building
After the dimension of the capping beam design drawing is comprehensively analyzed, defining a vase pier capping beam three-dimensional modeling parameter table in Autodesk Inventor software; drawing a vase pier capping beam three-dimensional model in Autodesk Inventor software according to defined parameters;
2) panel design
Considering the universality of the capping beam steel templates with different types of transverse slopes, the top surface of the capping beam steel template is designed into a flat slope and is properly heightened, so that the user parameters are adjusted to drive the generation of a capping beam entity model; taking a solid model carrier, and outwards extracting a shell with the thickness of 6 mm; dividing the shell into 16 panels of an upper layer, a middle layer and a lower layer through a blocking command;
3) design of skeleton
Dividing the panel into explosion views, finding that the bent cap steel template has symmetry, and only needing to design the framework of 2 panels on each layer;
according to the manufacturing requirements of manufacturers, 100# channel steel is adopted as the vertical ribs, 100 × 10mm offset steel is adopted as the connecting rib plates, and 180# channel steel is adopted as the back rods; full welding is required to be adopted for welding seams between the connecting rib plates, and the height of the welding seams is not less than 5 mm;
on the basis of the designed panel, selecting a corresponding structural part to be inserted into a skeleton design position by using a structural part design function in the Inventor software so as to quickly complete skeleton design;
assembling the framework and the panel into a whole;
4) connection design
The connection design comprises two aspects of connection between the template blocks and arrangement design of back rod pull rods, wherein M24 bolts are selected for connection between the template blocks, the hole spacing of the bolts is controlled to be 20-25cm, the bolts are uniformly distributed on the connecting rib plates, and a reinforcing rib plate is arranged between every two bolts;
the back rod pull rods are made of finish-rolled deformed steel bars, the distance between the pull rods is controlled to be 1.0-1.5m, the distribution positions of the pull rods are reasonably determined according to a three-dimensional design drawing, and after the positions of the pull rods are determined, the proper finish-rolled deformed steel bars are selected according to stress analysis;
5) force analysis
Stress analysis is carried out on the part or the structural part through a self-contained structure stress analysis module in the Inventor software;
guiding the three-dimensional model of each block steel template preliminarily designed by an Inventor software from top to bottom into an Ansys Workbench for stress analysis, and carrying out optimization comparison design on the basis, wherein a representative lower front panel is selected for stress analysis, and peripheral connecting bolts are used as safe storage and do not participate in computational analysis during block simulation calculation;
6) processing and drawing
And (3) creating a two-dimensional engineering drawing on the basis of three-dimensional design by using the Inventor software, submitting the BOM table to each related party or performing technical intersection, and realizing forward design.
When the vase pier capping beam three-dimensional model is drawn, whether the defined parameters can be normally driven or not is continuously debugged along with the drawing step in the process; in order to ensure the correctness of the design result, after the three-dimensional model is drawn, a software measurement function command is adopted to verify whether each design size is consistent with the two-dimensional design drawing, and after the verification is correct, the design work of the steel template can be carried out on the basis.
During stress analysis, in order to ensure the correctness of the calculation result, the setting of boundary conditions and the checking of whether the deformation animation demonstration is consistent with the actual stress deformation trend should be paid attention to in the calculation analysis process, so that the calculation result can be macroscopically grasped.
Compared with the prior art, the method has the advantages of short design period, excellent quality, good visualization, development of various applications (such as engineering quantity statistics, process animation production and visual bottom crossing) of design results (including intermediate results) and the like, the design of the vase pier capping beam steel template is carried out in a top-down mode, and the designed three-dimensional model of each block steel template (framework, panel and pull rod) is led into an Ansys Workbench to carry out integral stress analysis and design optimization. The method utilizes the advantages of BIM technology three-dimensional parametric design, exerts the powerful stress analysis function of the Ansys Workbench finite element software, realizes the full three-dimensional forward design and processing drawing of the steel template, fully exerts the advantages of all application software, is successfully applied in a plurality of projects at present, obtains better effect, and has very strong guiding significance and popularization value for project construction and production.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.
Examples
Referring to the attached drawing 1, the embodiment provides a method for designing a steel template of a pier capping beam of a bridge vase based on a BIM technology, which comprises the following specific steps:
1) parameterized model building
In order to drive the similar bent cap steel template design result to be plotted, after the bent cap design drawing is subjected to comprehensive analysis on the marked dimension, a vase pier bent cap three-dimensional modeling parameter table is defined in Autodesk Inventor software;
drawing the vase pier capping beam three-dimensional model in Autodesk Inventor software according to the definition parameters, wherein during drawing, attention needs to be paid to whether the definition parameters can be normally driven or not continuously debugged along with the drawing steps.
In order to ensure the correctness of the design result, after the three-dimensional model is drawn, a software measurement function command is adopted to verify whether each design size is consistent with the two-dimensional design drawing, and the design work of the steel template can be carried out on the basis after the verification is correct.
2) Panel design
Considering the universality of different cross slope bent cap steel templates (the construction template of the shockproof stop block is additionally designed), the top surface of the bent cap steel template is designed into a flat slope and is properly heightened, and the top surface is driven to generate a bent cap solid model by adjusting user parameters;
taking a solid model carrier, and outwards extracting a shell with the thickness of 6 mm;
the shell is divided into 16 panels of an upper layer, a middle layer and a lower layer through a blocking command;
3) design of skeleton
Dividing the panel into explosion views, finding that the bent cap steel template has symmetry, and only needing to carry out framework design on 2 panels (6 panels in total) on each layer;
according to the manufacturing requirements of manufacturers, 100# channel steel is adopted as the vertical ribs, 100 x 10mm offset steel is adopted as the connecting rib plates (a reinforcing design is adopted in partial positions, 100 x 100 angle steel is selected), and 180# channel steel is adopted as the back rod; the welding seams between the connecting rib plates are required to be fully welded, and the height of the welding seams is not less than 5 mm;
on the basis of the designed panel, the skeleton design can be quickly finished by selecting the corresponding section steel to be inserted into the skeleton design position by using the structural part design function in the Inventor software;
assembling the framework and the panel into a whole;
4) connection design
The connection design comprises two aspects of connection between template blocks and arrangement design of back rod pull rods, wherein M24 bolts are selected for connection between the template blocks according to experience, the hole spacing of the bolts is controlled to be between 20 and 25cm, the bolts are uniformly distributed on the connecting rib plates, and a reinforcing rib plate is arranged between every two bolts;
the back rod pull rods are made of finish-rolled deformed steel bars, the distance between the pull rods is controlled to be 1.0-1.5m, the distribution positions of the pull rods are reasonably determined according to a three-dimensional design drawing, and after the positions of the pull rods are determined, the suitable finish-rolled deformed steel bars are selected according to stress analysis.
5) Force analysis
Through a self-contained structure stress analysis module in the Inventor software, stress analysis can be performed on parts or structural members, but the whole loading analysis is difficult to be performed on each block template generated in the modeling mode.
In order to analyze the integral stress effect of each block template, a three-dimensional model of each block steel template (a framework, a panel and a pull rod) which is preliminarily designed by using an Inventor software from top to bottom is led into an Ansys Workbench to be subjected to stress analysis, and optimization comparison and selection design is carried out on the basis. A representative lower front panel is selected for stress analysis (when block simulation calculation is carried out, peripheral connecting bolts are used as safety reserves and do not participate in calculation analysis);
the calculation analysis shows that: the design of the framework and the panel is conservative, the safety reserve is large, the framework can be made of steel sections with smaller size, and the panel can be made of steel plates with the size of 5 mm; the middle pull rod is basically reasonable, and the angle pull rod can be finish-rolled deformed steel with the diameter of 24 mm.
In order to ensure the correctness of the calculation result, attention should be paid to the setting of boundary conditions and to the checking of whether the deformation animation demonstration is consistent with the actual stress deformation trend in the calculation analysis process, so as to macroscopically grasp the calculation result.
6) Processing and drawing
At present, the two-dimensional engineering drawing is still the main expression mode of design intention and design information, and the final design result needs to be submitted to relevant parties in a two-dimensional engineering drawing mode, so that the Inventor needs to create the two-dimensional engineering drawing (part drawing, assembly drawing and the like) on the basis of three-dimensional design by utilizing the Inventor software, and design results such as BOM (Bill of materials) tables and the like are submitted to the relevant parties or are subjected to technical background so as to realize forward design.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. A method for designing a steel template of a pier capping beam of a bridge vase based on a BIM technology is characterized by comprising the following specific steps:
1) parameterized model building
After the dimension of the capping beam design drawing is comprehensively analyzed, defining a vase pier capping beam three-dimensional modeling parameter table in Autodesk Inventor software; drawing a vase pier capping beam three-dimensional model in Autodesk Inventor software according to the defined parameters, and continuously debugging the defined parameters along with the drawing step in the process to normally drive when drawing the vase pier capping beam three-dimensional model; in order to ensure the correctness of the design result, after the three-dimensional model is drawn, a software measurement function command is adopted to verify whether each design size is consistent with the two-dimensional design drawing, and the design work of the steel template can be carried out on the basis after the verification is correct;
2) panel design
Considering the universality of different types of transverse slope bent cap steel templates, the top surface of the bent cap steel template is designed into a flat slope and is properly heightened, and the top surface is driven by adjusting user parameters to generate a bent cap solid model; taking a solid model carrier, and outwards extracting a shell with the thickness of 6 mm; dividing the shell into 16 panels of an upper layer, a middle layer and a lower layer through a blocking command;
3) skeleton design
Dividing the panel into explosion views can find that the bent cap steel template has symmetry, and only 2 panels on each layer need to be subjected to framework design;
according to the manufacturing requirements of manufacturers, 100# channel steel is adopted as the vertical ribs, 100 x 10mm offset steel is adopted as the connecting rib plates, and 180# channel steel is adopted as the back rods; the welding seams between the connecting rib plates are required to be fully welded, and the height of the welding seams is not less than 5 mm;
on the basis of the designed panel, selecting a corresponding structural part to be inserted into a skeleton design position by using a structural part design function in the Inventor software so as to quickly complete skeleton design;
assembling the framework and the panel into a whole;
4) connection design
The connection design comprises two aspects of connection between template blocks and arrangement design of back rod pull rods, wherein M24 bolts are selected for connection between the template blocks, the hole spacing of the bolts is controlled to be 20-25cm, the bolts are uniformly distributed on the connecting rib plates, and a reinforcing rib plate is arranged between every two bolts;
the back rod pull rods are made of finish-rolled deformed steel bars, the distance between the pull rods is controlled to be 1.0-1.5m, the distribution positions of the pull rods are reasonably determined according to a three-dimensional design drawing, and after the positions of the pull rods are determined, proper finish-rolled deformed steel bars are selected according to stress analysis;
5) force analysis
Stress analysis is carried out on the part or the structural part through a self-contained structure stress analysis module in the Inventor software;
guiding the three-dimensional model of each block steel template preliminarily designed by an Inventor software from top to bottom into an Ansys Workbench for stress analysis, and carrying out optimization comparison design on the basis, wherein a representative lower front panel is selected for stress analysis, and peripheral connecting bolts are used as safe storage and do not participate in computational analysis during block simulation calculation;
during stress analysis, in order to ensure the correctness of a calculation result, the setting of boundary conditions should be paid attention to and whether the deformation animation demonstration is consistent with the actual stress deformation trend or not is checked in the process of calculation and analysis so as to grasp the calculation result macroscopically;
6) processing and drawing
And (3) creating a two-dimensional engineering drawing on the basis of three-dimensional design by using the Inventor software, submitting a BOM table to each related party or performing technical background intersection, and realizing forward design.
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| CN111502246A (en) * | 2020-04-29 | 2020-08-07 | 中铁二局第一工程有限公司 | BIM technology-based design and optimization method for side wall unilateral template support system |
| CN112818448B (en) * | 2021-01-29 | 2023-03-31 | 中国电建集团成都勘测设计研究院有限公司 | Design method of underground factory building rock wall crane beam based on BIM technology |
| CN114065336B (en) * | 2021-09-28 | 2022-07-22 | 广州优比建筑咨询有限公司 | Revit-based high formwork region inspection method, device, medium and equipment |
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