基于超图GIS平台的三维管线模型自动生成方法及应用

Automatic Generation Method and Application of 3D Pipeline Model Based on Hypergraph GIS Platform

三维管线模型是构建数字孪生城市的重要基础数据之一。根据管线CAD图纸和管点标高进行人工建模的方式耗时耗力,难以满足实际工程需要。文中提出了一种基于超图GIS平台的三维管线模型自动生成的方法,可快速构建海量三维管线模型。首先将管线成果表格数据转换为超图GIS格式的管点和管线图层,然后基于管点和管线图层构建管线三维网络数据集,最后根据管点和管线的属性设置三维符号,生成三维管线场景。基于该方法构建的三维管线模型格式具有较强的通用性,可与三维实景数据以及其他各类GIS数据实现无缝融合,实现地上、地下三维一体化,可以直观的展示管线与周边环境的关系,并可进行管线碰撞检测、管线拆迁统计等分析。

3D pipeline model is one of the important basic data for building digital twin cities.Manual modeling based on pipeline CAD drawings and pipe point elevation is time-consuming and labor-consuming,which is difficult to meet the actual engineering needs.A method of automatic generation of 3D pipeline model based on hypergraph CIS platform is presented in this paper,which can quickly build massive 3D pipeline models.First,the tabular data of pipeline results are converted into pipe points and pipeline layers in hypergraph GIS format.And then,the 3D network data set of pipeline is constructed based on the pipe points and pipeline layer.Finally,the data set is symbolized to generate a 3D pipeline scene.The 3D pipeline model format constructed based on this method has strong universality.It can be seamlessly integrated with 3D real data and other GIS data to realize the three-dimensional integration of above ground and underground.It can intuitively display the relationship between pipelines and the surrounding environment,and can conduct pipeline collision detection,pipeline demolition statistics and other analysis.