A BIM model creation method for structures based on 3D datum line

Abstract

The invention discloses a three-dimensional reference line-based BIM creation method for a building. The method comprises the following steps of S1, generating a spatial three-dimensional line based on planar and longitudinal section data of a line; S2, extracting the position of a building plane center, and generating a discontinuous three-dimensional building model according to a relationship between the position and the spatial three-dimensional line; S3, establishing a local coordinate system corresponding to a mileage point of the line, drawing a corresponding structure outline according to the local coordinate system, and performing sweeping and lofting on the structure outline based on the spatial three-dimensional line to generate a continuous three-dimensional building model; and S4, generating a complete BIM of the building. According to the method, the BIM of the building is created; three-dimensional visual design of building layout is realized; the generated model is visual and vivid, and the model is extremely convenient to update and modify, so that the engineering efficiency can be improved; and in addition, the generated model establishes a building full-life-cycle database, so that more bases are provided for later operation and maintenance.

Description

Technical field [0001] The invention belongs to the technical field of structure design, and specifically relates to a method for creating a BIM model of a structure based on a three-dimensional reference line. Background technique [0002] my country is vigorously developing basic transportation construction. At present, based on the traffic planning route, the commonly used structure layout design methods are: (1) Use line plan, combined with terrain, planning road network and other control factors to lay out discontinuous structures in the line; (2) Use line longitudinal section, combined with structural dimensions, etc. Information is arranged in a continuous structure. [0003] However, the above-mentioned structure layout design method still stays in the two-dimensional design stage, and it has the following shortcomings and limitations: (1) The design results are only two-dimensional display, not as visual and intuitive as the three-dimensional model; (2) plan and elevation...

AI Technical Summary

Problems solved by technology

[0003] However, the layout design method of the above-mentioned structures still stays in the two-dimensional design stage, which has the following shortcomings and limitations: (1) the design results are only displayed in two dimensions, which cannot be as intuitive as the three-dimensional model; (2) the plan and elevation The diagram belongs to two parts that are relatively separated, and linkage modification cannot be done. In the design process, if the line changes or local adjustments, it is necessary to modify the plan and elevation at the same time, and the amount of modification is huge.

Moreover, there is currently no suitable design software that can be directly used in structure design to solve the technical problems faced by current structure design

[0004] As a new architectural model design method, BIM (Building Information Modeling) has excellent characteristics such as visualization, coordination, simulation, optimization and drawing, and has attracted special attention from the construction industry since its appearance. However, BIM is still in conceptual mode and has not been put into actual engineering design

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