CN114969936B - Grid structure construction method based on BIM - Google Patents
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Abstract
The invention belongs to a grid structure construction method of BIM in the technical field of grid structure construction, which comprises the following construction steps: creating a refined three-dimensional model serving as a standard parameter of the grid structure; the method comprises the steps of importing actual parameters of a grid structure to be constructed into stress analysis software for load calculation analysis, comparing stress deformation results with standard parameters of the grid structure, determining weak points of the grid structure to be constructed, and dividing the grid structure to be constructed into a plurality of parts from the weak point positions; and respectively carrying out projection on each divided refined three-dimensional model component to determine a plane and a vertical profile. According to the construction method of the grid structure based on the BIM, the stress form of the grid structure to be constructed is fully considered, the grid structure is cut and segmented by comparing with standard parameters, the grid structure is hoisted respectively, the prefabrication and construction precision is improved, and the site construction efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of grid structure construction, and particularly relates to a grid structure construction method based on BIM.
Background
The appearance is a flat plate grid, called grid for short; the external form is called curved surface grid, for short net shell. The grid structure has large space rigidity, good integrity and stability, good earthquake resistance and good building modeling effect, and is suitable for industrial and civil buildings with various supporting conditions, various plane shapes and large and small spans. The grid structure has the characteristics of multidirectional stress performance and internal force redistribution, and can be used for buildings with poor foundation conditions and possibly uneven settlement. The grid structure rod piece and the node are single, so that the grid structure rod piece is convenient to manufacture and install. The deviations of the geometric dimensions of the rod pieces and the nodes and the deviations of the curved surfaces have great influence on the internal force, the overall stability and the construction precision of the grid structure. In addition, to reduce initial defects, the high requirements placed on the machining accuracy of the bars and nodes add difficulty to the manufacturing process. These disadvantages are more pronounced in the large-scale reticulated shell. Thus, the site installation accuracy of the grid structure is affected. BIM is a building information model (building information model) for short, BIM technology refers to that basic components in a building engineering project are used as design elements, related information such as geometric data, physical characteristics, material information and the like describing the components are organically organized to form a database of comprehensive building system all-aspect information, all parameter information of the components are stored in the database, the database forms a data model of the building project, and each participant performs information insertion, extraction, editing, updating and the like on the model database in order to meet corresponding working requirements. The parameter information of the various components in the model is not independent information individuals, and a certain space and logic relation is kept between the parameter information and the parameter information, and the parameter information and the logic relation are used as the component part of the virtual digital building of the BIM model to form a complete and hierarchical building information system.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the defects of the prior art, the construction method of the grid structure based on the BIM has the advantages that the steps are simple, the stress form of the grid structure to be constructed is fully considered, the grid structure is cut and segmented according to standard parameters, the grid structure is respectively hoisted, the prefabrication and construction precision is improved, the site construction efficiency is improved, and the site construction quality of the grid structure is guaranteed.
The technical scheme adopted by the invention is as follows:
the invention relates to a grid structure construction method based on BIM, which comprises the following construction steps:
s1, creating a refined three-dimensional model in BIM modeling software as a standard parameter of a grid structure;
s2, importing actual parameters of the grid structure to be constructed into stress analysis software for load calculation analysis, comparing stress deformation results with standard parameters of the grid structure, determining weak points of the grid structure to be constructed, dividing the grid structure to be constructed into a plurality of parts from the weak point positions to form a plurality of grid structure components to be constructed, and determining lifting point positions of the grid structure components to be constructed;
s3, according to the data of the refined three-dimensional model created in the BIM modeling software after being analyzed according to the stress analysis software, cutting corresponding grid structure components to be constructed into corresponding refined three-dimensional model components, wherein the refined three-dimensional model components are independently arranged in the same plane;
s4, respectively carrying out projection on each divided refined three-dimensional model component in BIM modeling software to determine plane and elevation contour lines, and taking the plane and elevation contour lines as standard parameters of the plane and elevation contour lines of the grid structure component to be constructed;
s5, determining the corresponding installation positions of each grid structure component to be constructed on a construction site according to standard parameters of the plane and the elevation contour lines in BIM software, facilitating block assembly on the site, and hoisting each grid structure model component to an installation structure surface for installation.
In the step S2, when the actual parameters of the grid structure to be constructed are led into stress analysis software to carry out load calculation analysis, the stress characteristics of the construction stage must be considered, and proper load combinations including the dead weight of the component, wind load and construction load are selected.
And step S3, after the corresponding grid structure components to be constructed are cut into corresponding refined three-dimensional model components, marking the cut grid structure components to be constructed respectively.
In step S4, when the projection is performed on each divided refined three-dimensional model component in the BIM modeling software to determine the plane and the elevation contour lines, the contour lines need to be accurate in plane dimension and elevation data.
And S5, after the corresponding installation positions of the grid structure components to be constructed on the construction site are determined, construction lofting is carried out on the grid structure components to be constructed according to standard parameters of plane and elevation contour lines of the grid structure components to be constructed, and fine assembly is carried out according to the standard parameters of the grid structure.
According to the grid structure construction method based on BIM, load combinations such as dead weight, wind load, ash accumulation load and dynamic load are combined according to building structure load standard, and internal force calculation is carried out; the structure position with the worst deformation or stability in the internal force calculation is taken as the weak point (the most unfavorable point), and the similar positions are cut and sequenced in the model.
Before lifting and hoisting after the block combination of the construction site, welding a lifting ring on a component so as to facilitate site construction; the divided models are respectively marked by a label, the divided models are classified and marked by A, B, C … …, the steel pipe, the bolt ball node and the support in the A model are respectively marked by A-1, A-2 and A-3 … …, and the steel pipe, the bolt ball node and the support in the A model can be quickly selected and installed conveniently in site construction.
By adopting the technical scheme of the invention, the working principle and the beneficial effects are as follows:
the construction method of the grid structure based on the BIM aims at the technical problems in the prior art, and is improved in that when the grid structure is constructed, a refined three-dimensional model is created in BIM modeling software, then data of the grid structure to be constructed are compared with standard parameters of the refined three-dimensional model, weak points of the grid structure to be constructed are found, the grid structure to be constructed is cut to form a plurality of grid structure components to be constructed, the weak points are taken as cutting positions in cutting, the overall strength of the grid structure to be constructed is not affected, and after the grid structure components to be constructed are arranged and installed in place, the overall strength meets the requirements. And then respectively projecting each divided refined three-dimensional model component in BIM modeling software to determine plane and elevation contour lines, taking the plane and elevation contour lines as standard parameters of the plane and elevation contour lines of the grid structure components to be constructed, determining corresponding installation positions of each grid structure component to be constructed on a construction site according to the standard parameters of the plane and elevation contour lines in the BIM software, facilitating block assembly on the site, and hoisting each grid structure model component to the installation structure surface for installation. Therefore, whether the weak points are determined or the corresponding installation positions of the grid structure components to be constructed on the construction site are determined through the standard parameters of the refined three-dimensional model created in the BIM modeling software, and the installation accuracy of the grid structure is effectively improved. The construction method of the grid structure based on the BIM has the advantages that the steps are simple, the stress form of the grid structure to be constructed is fully considered, the grid structure is cut and segmented according to standard parameters, the grid structure is respectively hoisted, the prefabrication and construction precision is improved, the site construction efficiency is improved, and the site construction quality of the grid structure is guaranteed.
Drawings
The following is a brief description of what is expressed in the drawings of this specification and the references in the drawings:
FIG. 1 is a flow chart of a method for constructing a BIM-based grid structure according to the present invention;
Detailed Description
The following describes the shape, structure, mutual position and connection relation between parts, action of parts and working principle of the specific embodiment of the present invention by describing examples in further detail:
as shown in figure 1, the invention relates to a grid structure construction method based on BIM, which comprises the following construction steps:
s1, creating a refined three-dimensional model in BIM modeling software as a standard parameter of a grid structure; s2, importing actual parameters of the grid structure to be constructed into stress analysis software for load calculation analysis, comparing stress deformation results with standard parameters of the grid structure, determining weak points of the grid structure to be constructed, dividing the grid structure to be constructed into a plurality of parts from the weak point positions to form a plurality of grid structure components to be constructed, and determining lifting point positions of the grid structure components to be constructed; s3, according to the data of the refined three-dimensional model created in the BIM modeling software after being analyzed according to the stress analysis software, cutting corresponding grid structure components to be constructed into corresponding refined three-dimensional model components, wherein the refined three-dimensional model components are independently arranged in the same plane; s4, respectively carrying out projection on each divided refined three-dimensional model component in BIM modeling software to determine plane and elevation contour lines, and taking the plane and elevation contour lines as standard parameters of the plane and elevation contour lines of the grid structure component to be constructed; s5, determining the corresponding installation positions of each grid structure component to be constructed on a construction site according to standard parameters of the plane and the elevation contour lines in BIM software, facilitating block assembly on the site, and hoisting each grid structure model component to an installation structure surface for installation. The steps provide a brand new technical scheme aiming at the defects in the prior art. The construction method is improved in that when the grid structure is constructed, a refined three-dimensional model is firstly created in BIM modeling software, then data of the grid structure to be constructed are compared with standard parameters of the refined three-dimensional model, weak points of the grid structure to be constructed are found, then the grid structure to be constructed is cut to form a plurality of grid structure components to be constructed, the weak points are taken as cutting positions in cutting, the overall strength of the grid structure to be constructed is not affected, and after the grid structure components to be constructed are arranged and installed in place, the overall strength meets the requirements. And then respectively projecting each divided refined three-dimensional model component in BIM modeling software to determine plane and elevation contour lines, taking the plane and elevation contour lines as standard parameters of the plane and elevation contour lines of the grid structure components to be constructed, determining corresponding installation positions of each grid structure component to be constructed on a construction site according to the standard parameters of the plane and elevation contour lines in the BIM software, facilitating block assembly on the site, and hoisting each grid structure model component to the installation structure surface for installation. Therefore, whether the weak points are determined or the corresponding installation positions of the grid structure components to be constructed on the construction site are determined through the standard parameters of the refined three-dimensional model created in the BIM modeling software, and the installation accuracy of the grid structure is effectively improved. The construction method of the grid structure based on the BIM has the advantages that the steps are simple, the stress form of the grid structure to be constructed is fully considered, the grid structure is cut and segmented according to standard parameters, the grid structure is respectively hoisted, the prefabrication and construction precision is improved, the site construction efficiency is improved, and the site construction quality of the grid structure is guaranteed.
In the step S2, when the actual parameters of the grid structure to be constructed are led into stress analysis software to carry out load calculation analysis, the stress characteristics of the construction stage must be considered, and proper load combinations including the dead weight of the component, wind load and construction load are selected. According to the structure, when the actual parameters of the grid structure to be constructed are imported into the stress analysis software for load calculation and analysis, the parameters are required to be considered, and the accuracy of calculated values is ensured so as to be convenient to compare with standard parameters. Therefore, the weak points of the grid structure to be constructed are accurately determined, and the grid structure is convenient to cut and hoist.
And step S3, after the corresponding grid structure components to be constructed are cut into corresponding refined three-dimensional model components, marking the cut grid structure components to be constructed respectively. According to the structure, the grid structure components to be constructed are respectively marked with the serial numbers, so that the arrangement position sequence of the grid structure components to be constructed can be conveniently identified, and the subsequent site construction can be facilitated.
In step S4, when the projection is performed on each divided refined three-dimensional model component in the BIM modeling software to determine the plane and the elevation contour lines, the contour lines need to be accurate in plane dimension and elevation data. And S5, after the corresponding installation positions of the grid structure components to be constructed on the construction site are determined, construction lofting is carried out on the grid structure components to be constructed according to standard parameters of plane and elevation contour lines of the grid structure components to be constructed, and fine assembly is carried out according to the standard parameters of the grid structure. And respectively carrying out projection on each divided refined three-dimensional model component in BIM modeling software to determine a plane and a vertical profile as standard parameters, and determining the corresponding installation position of each grid structure component to be constructed on a construction site. Thus, the site arrangement position of the grid structure to be constructed is effectively improved.
According to the grid structure construction method based on BIM, load combinations such as dead weight, wind load, ash accumulation load and dynamic load are combined according to building structure load standard, and internal force calculation is carried out; the structure position with the worst deformation or stability in the internal force calculation is taken as the weak point (the most unfavorable point), and the similar positions are cut and sequenced in the model.
Before lifting and hoisting after the block combination of the construction site, welding a lifting ring on a component so as to facilitate site construction; the divided models are respectively marked by a label, the divided models are classified and marked by A, B, C … …, the steel pipe, the bolt ball node and the support in the A model are respectively marked by A-1, A-2 and A-3 … …, and the steel pipe, the bolt ball node and the support in the A model can be quickly selected and installed conveniently in site construction.
The construction method of the grid structure based on the BIM aims at the technical problems in the prior art, and is improved in that when the grid structure is constructed, a refined three-dimensional model is created in BIM modeling software, then data of the grid structure to be constructed are compared with standard parameters of the refined three-dimensional model, weak points of the grid structure to be constructed are found, the grid structure to be constructed is cut to form a plurality of grid structure components to be constructed, the weak points are taken as cutting positions in cutting, the overall strength of the grid structure to be constructed is not affected, and after the grid structure components to be constructed are arranged and installed in place, the overall strength meets the requirements. And then respectively projecting each divided refined three-dimensional model component in BIM modeling software to determine plane and elevation contour lines, taking the plane and elevation contour lines as standard parameters of the plane and elevation contour lines of the grid structure components to be constructed, determining corresponding installation positions of each grid structure component to be constructed on a construction site according to the standard parameters of the plane and elevation contour lines in the BIM software, facilitating block assembly on the site, and hoisting each grid structure model component to the installation structure surface for installation. Therefore, whether the weak points are determined or the corresponding installation positions of the grid structure components to be constructed on the construction site are determined through the standard parameters of the refined three-dimensional model created in the BIM modeling software, and the installation accuracy of the grid structure is effectively improved. The construction method of the grid structure based on the BIM has the advantages that the steps are simple, the stress form of the grid structure to be constructed is fully considered, the grid structure is cut and segmented according to standard parameters, the grid structure is respectively hoisted, the prefabrication and construction precision is improved, the site construction efficiency is improved, and the site construction quality of the grid structure is guaranteed.
While the invention has been described above with reference to the accompanying drawings, it will be apparent that the specific implementation of the invention is not limited by the foregoing, but rather is within the scope of the invention as long as various modifications are made by the method concept and technical scheme of the invention, or the concept and technical scheme of the invention are directly applied to other occasions without modification.
Claims (3)
1. A grid structure construction method based on BIM is characterized in that: the construction steps of the grid structure construction method based on BIM are as follows:
s1, creating a refined three-dimensional model in BIM modeling software as a standard parameter of a grid structure;
s2, importing actual parameters of the grid structure to be constructed into stress analysis software for load calculation analysis, comparing stress deformation results with standard parameters of the grid structure, determining weak points of the grid structure to be constructed, dividing the grid structure to be constructed into a plurality of parts from the weak point positions to form a plurality of grid structure components to be constructed, and determining lifting point positions of the grid structure components to be constructed;
s3, according to the data of the refined three-dimensional model created in the BIM modeling software after being analyzed according to the stress analysis software, cutting corresponding grid structure components to be constructed into corresponding refined three-dimensional model components, wherein the refined three-dimensional model components are independently arranged in the same plane;
s4, respectively carrying out projection on each divided refined three-dimensional model component in BIM modeling software to determine plane and elevation contour lines, and taking the plane and elevation contour lines as standard parameters of the plane and elevation contour lines of the grid structure component to be constructed;
s5, determining corresponding installation positions of each grid structure component to be constructed on a construction site according to standard parameters of plane and elevation contour lines in BIM software, facilitating block assembly on the site, and hoisting each grid structure model component to an installation structure surface for installation;
in the step S2, when the actual parameters of the grid structure to be constructed are imported into stress analysis software for load calculation and analysis, the stress characteristics of the construction stage must be considered, and proper load combinations including the dead weight of the component, wind load and construction load are selected;
step S3, after the corresponding grid structure components to be constructed are cut into corresponding refined three-dimensional model components, marking the cut grid structure components to be constructed respectively;
in the step S4, when the projection of each divided refined three-dimensional model component is respectively carried out in BIM modeling software to determine the contour lines of the plane and the elevation, the contour lines need to be accurate in plane dimension and elevation data;
step S5, after the corresponding installation positions of the grid structure components to be constructed on a construction site are determined, construction lofting is carried out on the grid structure components to be constructed of all the labels according to the standard parameters of the plane and the elevation contour lines of the grid structure components to be constructed, and fine assembly is carried out according to the standard parameters of the grid structure;
when the weak points of the grid structure to be constructed are determined, the structure positions with the worst deformation or stability in calculation are taken as the weak points, and the similar positions are cut and sequenced in the model.
2. The BIM-based grid structure construction method according to claim 1, wherein: before lifting and hoisting after the construction site block combination, a hanging ring is welded on the component so as to facilitate site construction.
3. The BIM-based grid structure construction method according to claim 1 or 2, wherein: the divided models are respectively marked by a label, the divided models are classified and marked by A, B, C … …, the steel pipe, the bolt ball node and the support in the A model are respectively marked by A-1, A-2 and A-3 … …, and the steel pipe, the bolt ball node and the support in the A model can be quickly selected and installed conveniently in site construction.
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| CN111444564A (en) * | 2020-03-25 | 2020-07-24 | 中国十七冶集团有限公司 | Spatial information modeling (BIM) -based grid structure synchronous lifting construction method |
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| WO2010072060A1 (en) * | 2008-12-23 | 2010-07-01 | 徐州中煤钢结构建设有限公司 | Construction technique of super large span double-layer network frame dome |
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