Bridge three-dimensional model construction method based on BIM

Abstract

The present invention discloses a bridge three-dimensional model construction method based on the BIM. The method comprises the following steps: dividing objects of an whole structure of the bridge, and classifying the objects of the bridge in a normative manner; subdividing the bridge components into elements and primitives, parameterizing the elements and primitives, and formulating a parameter table corresponding to the geometric dimensions; carrying out assembly and positioning on the three-dimensional model of the bridge components, determining and defining element control points and relative spatial position relationships, assembling the elements into components, storing the components into an component template library, and establishing component control points; extracting three-dimensional route information of the project, and determining stake marks and the design elevation of the route; and assembling the component three-dimensional model, based on the route information, using positioning parameters to determine the location of the component model, and calling the type method, so that parametric assembly can be automatically carried out between components. According to the method disclosed by the present invention, by optimizing the bridge model, parameterization and standardization of the bridge components are realized, the modeling time is shortened, and the design efficiency and quality are improved.

Description

technical field [0001] The invention relates to the technical field of bridge engineering BIM, in particular to a method for constructing a three-dimensional model of a bridge based on BIM. Background technique [0002] With the development of computer technology and network technology, the degree of informatization is getting higher and higher. The owner's requirements for engineering design are not limited to the delivery of two-dimensional graphic design drawings, but hope to have a more intuitive and comprehensive design delivery form. It is convenient for later procurement, construction, management and maintenance. Traditional two-dimensional design drawings can no longer meet the above requirements. The effective application of BIM technology in the design stage can not only effectively improve the quality, efficiency and level of engineering design, save manpower and material resources to the greatest extent and shorten the design cycle, but also can transmit the 3D ...

AI Technical Summary

Problems solved by technology

[0004] 1. It does not conform to the bridge design habits of the highway industry, and can only meet the requirements of 3D modeling;

[0005] 2. There is no component library suitable for specifications and engineering experience;

[0006] 3. The parameter constraints of each component of the bridge structure are complex, resulting in low modeling efficiency;

[0007] 4. Modeling is not based on 3D route information, and coordinates are used for positioning instead of pile number and elevation. When the route information changes, it is difficult to adjust the bridge structure accordingly

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