城市地下管线三维建模及其与城市轨道交通线路的空间冲突分析方法*

吕希奎1,2高崇文2王奇胜2聂良涛2

Three-dimensional Modeling of Urban Underground Pipeline and Analysis of the Spatial Conflict with Urban Rail Transit

LYU XikuiGAO ChongwenWANG QishengNIE Liangtao
摘要:
城市地下管线的改移和空间冲突是城市轨道交通线路规划设计中的主要空间冲突之一。针对传统的二维地下管线表达方式难以直观表达管线的空间位置和空间冲突的弊端,基于Skyline 3DGIS平台二次开发技术,采用视觉分割和部件模型组合方法,解决了多类异形、异径的管线段和连接件的三维自动建模难题,建立了适合长带状线路特点的地下管线三维建模方法,实现了直观的地下管线三维可视化效果。采用3DGIS的空间分析技术、立体缓冲区方法和射线法,实现了地下管线与线路可视化空间冲突分析和改移计算。
Abstracts:
Relocation of urban underground pipelines and space cmpitition are one of the main spatial conflicts in the planning and design of urban rail transit lines. Since the traditional 2D underground pipeline expression is difficult to directly express the disadvantages of the spatial position and space conflict of the pipelines, a combination method of visual segmentation and component model is adopted to solved the problem of three-dimensional automatic modeling of multi-type, different-diameter pipeline segments and connectors, based on the secondary development technology of Skyline 3DGIS platform. Then, a three-dimensional modeling method for underground pipelines suitable for the characteristics of long strip line is established, it achieves the intuitive 3D visualization of underground pipelines. By using 3DGIS spatial analysis technology, stereo buffer method and ray method, the spatial conflict analysis and the relocation calculation of underground pipelines are realized.
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