Three-dimensional visualization method for multi-line railway

Abstract

The invention discloses a three-dimensional visualization method for a multi-line railway, comprising the following steps of: constructing a multi-line horizontal and longitudinal section model and a digital terrain model (S1), constructing a multi-line cross section model (S2), designing a roadbed cross section (S3), constructing a multi-line railway model (S4), constructing a whole boundary line (S5) of a multi-line railway roadbed, cutting the digital terrain model (S6), forming a three-dimensional visual scene for a multi-line railway (S7), and automatically roaming and interactively viewing (S8). The multi-line railway model and the digital terrain model are constructed and rendered, and the multi-line railway design result is also showed in a visual three-dimensional visual scene, so that such conditions as bypassing, intersection, unequal height or parallelization of multiple railways are met and the three-dimensional visualization of the multi-line railway is realized. The complex relationship between multiple railways can be reflected in real time, and the design intent is expressed clearly. According to the method, not only is the design of the multi-line railway assisted and instructed, but also the re-verification and checking of the design solution are facilitated; meanwhile, the method is adaptable for the manufacturing and demonstration of the design sketch of the multi-line railway.

Description

technical field [0001] The invention relates to a railway line design method, in particular to a three-dimensional visualization method for multi-line lines in railway design. Background technique [0002] Traditional research on 3D visualization of railway lines is limited to simple simulations of high-speed railways such as single-line railways and double-line parallel railways, without considering the relationship and influence between multiple railway lines. However, in the actual railway engineering design, it is often encountered that multiple lines detour, cross, have different heights or parallel lines, especially in large-scale railway hubs. The simple three-dimensional simulation of the railway line cannot realize the three-dimensional visualization of the railway multi-line line, and cannot express the complex relationship between the multi-line well. Check whether the cross-crossing relationship, line spacing, clearance, etc. are reasonable, and cannot comprehen...

AI Technical Summary

Problems solved by technology

[0002] Traditional research on 3D visualization of railway lines is limited to simple simulations of high-speed railways such as single-line railways and double-line parallel railways, without considering the relationship and influence between multiple railway lines

However, in the actual railway engineering design, it is often encountered that multiple lines detour, cross, have different heights, or multiple lines run in parallel, especially in large railway hubs. The simple three-dimensional simulation of the railway line cannot realize the three-dimensional visualization of the multi-line railway line, and cannot express the complex relationship between the multi-line lines well. Check whether the cross-cross relationship, line spacing, clearance, etc. are reasonable. It is impossible to comprehensively and intuitively grasp the subgrade cross-section information at any position, including line spacing, subgrade surface height difference and slope design. The work efficiency is not high, and problems are prone to occur. Affect the quality of the design, and even bring significant losses; at the same time, the 3D simulation of simple lines cannot be applied to the rendering and presentation of railway multi-line lines

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