Abstract: A practical 3D spatial analysis for 3D-urban-GIS named Volume Intersection Analysis is presented. With the Volume Intersection Analysis, two volume datasets are put sequentially in, then a result which describes the intersection information between the two datasets is put out. The result is a collection of relations, and each relation describes that a volume object in the first dataset intersects with one or more volume objects in the second dataset. A robust and fast algorithm for the Volume Intersection Analysis is implemented based on the OO3D data model, and its practicality is verified based on a 3D-urban-GISproject (TG-U-3D). The Volume Intersection Analysis is applied to aid detecting land-use conflicts in urban underground space planning process, and finding out the stratums that city facilities lie in or pass through.

Key words: Volume Intersection Analysis, 3D spatial analysis, 3D-urban-GIS, urban underground space (UUS) planning

摘要： 提出一种应用于三维城市地理信息系统的空间分析方法:体相交分析。该方法先后输入两个体数据集, 经过分析计算, 输出一个关系集合, 集合中的每一条关系代表第一个输入数据集 中的一个体对象与第二个输入数据集中的一个或多个体对象之间存在的相交关系。基于 OO3D 数据模型, 实现了一种稳定、快速 的体相交分析算法,并将其应用到一个三维城市地理信息系统项目(TG-U-3D) 之中。在该项目中, 体相交分析用于辅助检测城市地下空间规划过程中的用地冲突, 以及查询某一城市设施所位于或者穿越的地层。

关键词: 体相交分析, 三维空间分析, 三维城市地理信息系统, 城市地下空间规划