Study on 3D Modeling Method for Railway Large Range Complex Geological Regional Environment

被引：0

作者：

Lyu X. ^{[1
]}

Bai J. ^{[1
]}

Zhuang J. ^{[2
]}

Nie L. ^{[1
]}

Gao C. ^{[3
]}

机构：

[1] School of Traffic and Transportation, Shijiazhuang Tiedao University, Shijiazhuang

[2] Hebei Xiongan Rail Express Co., Ltd., Baoding

[3] China Railway Design Group Co., Ltd., Tianjin

来源：

Tiedao Xuebao/Journal of the China Railway Society | 2024年 / 46卷 / 02期

关键词：

3D modeling; BIM technology; complex geological regional environment; large area; railway location and design;

D O I：

10.3969/j.issn.1001-8360.2024.02.012

中图分类号：

学科分类号：

摘要：

Scientific and reasonable planning of railway line location in order to solve the problem of railway geological disasters before they occur has always been a difficult problem in railway location in complex mountainous areas. The paper presented an overall three-dimensional modeling method for railway large-scale complex geological environment, based on 3D visual modeling technology based on spatial data. By extracting and processing vectorized information of remote sensing geological interpretation maps, and using Lagrange interpolation and cubic Hermite curve interpolation algorithms, the paper realized the creation of 3D model of vectorized geological objects driven by data. According to the spatial boundary data and regional boundaries of geological objects, the filling closed area and filling color system were constructed. With DEM model and DOM images as data sources, large-scale 3D terrain scene modeling was realized in Infraworks BIM platform. Based on the seven parameter coordinate system transformation method, with area ratio, spatial distance error andgray state mean as the standards, the image matching degree analysis method and the optimal control point selection strategy were established based on gray histogram. By solving the problem of precise positioning and integration of large-scale vectorized geological model in 3D terrain scene, and by establishing the three-dimensional engineering geological model for complete railway engineering areas, this paper realized the 3D visualization of large-scale complex geological environment. The design scheme and the BIM design results of railway lines were positioned and integrated on the BIM platform, so that the design effect of the BIM model of the railway line scheme can be seamlessly displayed in the 3D geological environment. The results show that the constructed ultra-large-scale 3D geological environment model, with good integrity and visibility of geological information and intuitive display of the 3D geological environment of the entire line selection area, can better meet the requirements of railway planning in complex mountainous areas in the pre-feasibility and feasibility study stages. © 2024 Science Press. All rights reserved.

引用

页码：105 / 113

页数：8

共 20 条

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