基于动态分段技术的城市管网空间数据库

Spatial database design for urban distribution networks based on dynamic segmentation

针对传统的弧段 -结点拓扑关系模型在建立线形要素空间数据库中存在的问题 ,利用动态分段技术提出了建立城市管网空间数据库的技术方案。详细介绍了动态分段技术的 3个基本概念即路径、度量和事件 ,系统地分析了城市管网的空间数据模型。最后将动态分段技术与城市管网模型结合 ,提出了实用性强的城市管网空间数据库逻辑设计方法 ,该数据库具有数据冗余低 ,数据维护方便、高效、简便的特点。

A method to set up a spatial database for urban distribution networks was presented by means of dynamic segmentation techniques in order to overcome the shortcomings that the conventional arc-node topological model faces in modeling the linear features. Three basic concepts, namely route, measure and event, relating to dynamic segmentation techniques were given in detail. A spatial data model for urban distribution networks is proposed systematically. Finally, a prototype spatial database for urban distribution networks, which is of low redundancy for data storage, easy maintenance and high efficiency for database management, is designed and implemented by integrating dynamic segmentation techniques with the urban distribution network model.