基于BIM+GIS的城市轨道交通多源数据转换与集成方法研究

Research on Multi-source Data Conversion and Integration Method of Urban Rail Transportation Based on BIM+GIS

为解决城市轨道交通工程各阶段多源数据集成问题、提升城市轨道交通运维监管效率与可视化效果,本文以三维地形数据的获取与发布、海量GIS数据的显示策略、BIM模型数据的处理与加载为研究重点,提出一套实现BIM+GIS数据融合与地理位置配准的解决方案,并通过合肥市轨道工程验证。本研究使用B/S架构基于Cesium开源地图引擎,开发以BIM+GIS技术为核心的Web平台,该平台以WebGL为容器、Web服务为链接,实现大范围真实地理空间环境下BIM模型的地理配准与对象级数据管理,同时实现了城市轨道交通实时监测与安全预警可视化展示,推动“云大物移智”融入城市轨道交通建设全生命周期,为城市轨道交通三维场景构建与数字化交付应用提供了参考。

In order to improve the multi-source data integration in all phases of urban rail transit project and the efficiency as well as the visualization of urban rail transit operation and maintenance supervision,this paper focuses on the acquisition and publication of 3D terrain data,display strategy of massive GIS data,processing and loading of BIM data,and proposes a set of scheme integrating BIM+GIS data fusion and geographic alignment,which is verified by Hefei rail transit project.Using B/S architecture,Cesium and BIM+GIS technology as the core,a Web platform is established,with WebGL as the container and Web service as the link for the geographic alignment and objectlevel data management of BIM model in a real,large scale geospatial environment,which realizes the real-time monitoring and safety warning visualization of urban rail transportation.Integrating cloud computing,big data,IOT,mobile technology and AI into the whole life-cycle of urban rail transit construction,the scheme provides a reference for 3D scene construction and digital application of urban rail transit.