基于Cesium的铁路桥梁三维GIS场景构建研究

Research on Construction of 3D GIS Scene of Railway Bridge BIM Based on Cesium

随着铁路工程领域数字化、信息化、智能化不断推进,将铁路工程信息模型与大范围真实地理环境融合,通过互联网在线可视化与分布式多终端共享展示铁路工程三维场景成为发展趋势。本文基于开源Cesium平台,从铁路工程三维地理场景构建,铁路桥梁BIM模型参数化建模、融合与定位,到铁路三维GIS场景交互与应用功能开发,设计了面向铁路工程空间信息模型的三维GIS场景构建方案,实现了铁路桥梁BIM模型三维GIS场景的三维漫游、空间查询、地形分析、日照分析、剖切分析等功能应用,为铁路数字工程BIM+GIS开放共享应用管理和展示提供了技术路径。

With the continuous advancement of digitization,informatization and intellectualization in the field of railway engineering,it has become a development trend to integrate the railway engineering information model with a large-scale real geographical environment,and display 3D scene of railway engineering through online visualization an distribution sharing.From the construction of railway 3D geographic scene,railway bridge BIM parametric modeling,fusion and positioning,to the development of 3D scene interaction and application function,this paper designs an overall scheme based on open source Cesium platform and realizes 3D roaming,spatial query,terrain analysis,sunshine analysis,profile analysis and other functions for railway engineering bridge information model.It provides a technical path for the open and shared management and demonstration of BIM+GIS in railway digital engineering application.