BIM Design Method of Railway Subgrade Drainage Based on Terrain Surface

Abstract

The invention discloses a railway roadbed draining BIM design method based on a curved surface of a landform. The method comprises the following steps: building a digital ground surface model according to three-dimensional landform point cloud data; importing an embankment slope foot design line and a cutting top design line; constructing a customized dictionary of a railway roadbed draining project; constructing railway roadbed draining horizontal surface and vertical section viewports; creating a customized entity of a horizontal surface of a waterway in an interactive way; automatically creating a customized entity of a vertical section of the waterway; conducting linked cooperative interactive design of the horizontal surface and the vertical section of the waterway and creating a three-dimensional point coordinate file from the result of the design; creating a three-dimensional waterway skeleton line in Dassault Systemes; developing waterway templates with a uniform cross section and a variable cross section in the Dassault Systemes; instantiating the templates to generate a three-dimensional waterway model with additional information; and cutting a landform curved surface covering the waterway from the top and achieving fusion of the waterway model and the landform curved surface. The design process of the method is highly automatic, and the method is highly practical. The method can largely improve design efficiency and result quality and thus has significant promotion and application value.

Description

technical field [0001] The invention relates to a railway subgrade drainage design method, in particular to a railway subgrade drainage BIM design method based on a terrain surface. Background technique [0002] The drainage design of railway subgrade based on BIM technology is the need of deepening and optimizing the design. However, the traditional subgrade drainage design mainly relies on the subgrade cross-section. Insufficient attention to inter-drainage or even no reflection at all. In the railway BIM design, the subgrade design has been changed from the traditional cross-section method to the subgrade deepening design method based on terrain surface and section sweeping. The design results have changed from the original discrete cross-section to a coherent surface and entity. The drainage BIM design carried out above is a horizontal, vertical and three-dimensional coordinated drainage design carried out on the terrain surface with the accurate embankment slope line a...

AI Technical Summary

Problems solved by technology

[0002] The drainage design of railway subgrade based on BIM technology is the need of deepening and optimizing the design. However, the traditional subgrade drainage design mainly relies on the subgrade cross-section. Insufficient attention to inter-drainage or even no reflection at all

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