BIM design method for automatic comparison and selection of tunnel entrance positions

Abstract

The invention discloses a tunnel hole opening position automatic comparison and selection BIM (building information modeling) design method, which comprises the following steps of building a digital ground model (S1) according to three-dimensional topographic point cloud data; building a three-dimensional line position (S2) according to the line two-dimensional flat and longitudinal cross section; building a tunnel hole opening section key mileage point (S3) on the three-dimensional plane line position; building a point (S4) moving in a direction along with the tunnel three-dimensional space line position; building a point (S5) moving in a direction vertical to the tunnel three-dimensional line position; building a tunnel hole opening framework line (S6); developing a tunnel hole opening edge front slope formwork (S7); using the formwork for realizing the instantiation generation of a tunnel hole opening edge front slope model (S8); realizing the movement of a tunnel hole opening in the three-dimensional space line position; realizing the regulation (S10) of different factor lengths of the tunnel hole opening section on the three-dimensional space line position; realizing the deviation (S11) of the tunnel hole opening in a position near the three-dimensional space line position. The method realizes the automatic comparison and selection of different hole opening conditions of a tunnel, and has the obvious popularization and application values.

Description

technical field [0001] The invention relates to a method for automatic comparison and selection of tunnel opening positions. Background technique [0002] Tunnel opening position comparison plays a very important role in the line position selection at the initial stage of the project, the tunnel scheme design and the detailed design of the tunnel. In the traditional two-dimensional design, the selection of the position of the tunnel entrance mainly depends on the horizontal and vertical sections of the terrain. The process is cumbersome, and it is difficult to accurately reflect the brush slope height between sections, especially at the intersection of side slopes, which greatly reduces the quality of tunnel entrance design. In recent years, BIM technology has become the development trend of the civil engineering industry. Therefore, whether it is to comply with the development of the industry or to improve the design accuracy and quality, the BIM design method for automati...

AI Technical Summary

Problems solved by technology

In the traditional two-dimensional design, the selection of the position of the tunnel entrance mainly depends on the horizontal and vertical sections of the terrain. The process is cumbersome, and it is difficult to accurately reflect the brush slope height between sections, especially at the intersection of side slopes, which greatly reduces the quality of tunnel entrance design

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