基于Cesium的BIM与实景三维模型集成可视化研究

Research on Integrated Visualization of BIM and Real-Scene 3D Model Based on Cesium

建筑信息模型(building information model,BIM)是对建筑的物理和功能特性的全要素信息数字化表达,而建筑设计、施工中都需要周边环境信息作为参考,GIS作为地理空间信息的表达载体,正弥补了BIM的不足。将BIM与GIS进行有机融合可将建筑与环境融为一体,可以广泛应用于规划设计、城市管理等领域。实景三维模型是具备高精度、高真实性的GIS数据源。本文以某磁浮铁路项目为例,介绍BIM与GIS数据集成可视化思路,针对坐标基准统一、模型衔接处理等问题介绍在Cesium中的实现方法,为BIM+GIS在建筑设计、城市规划、路桥施工等领域的应用打下基础。

BIM is a digital representation of the total factor information of building physics and functional characteristics.In the architectural design and construction,the surrounding environment information is needed as a reference.GIS as the expression of geospatial information makes up for the deficiency of BIM.The organic integration of BIM and GIS can integrate architecture and environment,and can be widely used in planning and design,urban management and other fields.The real-scene 3D model is an emerging GIS data source with high precision and high authenticity.This paper takes a maglev railway project as an example to introduce the visualization of BIM and GIS data integration.It introduces the problem of coordinate reference and model connection processing in Cesium.The implementation method lays a foundation for the application of BIM+GIS in the fields of architectural design,urban planning,road and bridge construction.