基于三叉树的城市雨水管网优化设计

在城市雨水管网的优化设计中,采用了图论中树形结构的理论来描述雨水管网.提出用n叉树(n=3)的形式来处理雨水管网的网络结构,把管段当作树的结点进行研究;利用树的遍历中的后序法来进行水力计算;在优化计算时采取了枚举标准管径法来选取管径,可以提高运算速度.笔者用Delphi语言编制了雨水管网优化程序,用天津某小区的雨水管网对此程序进行了实例考核.

Optimal Design of Storm Sewer System Based on 3-Ary Tree

Based on n-ary tree theory,3-ary tree was applied to the optimal design of storm sewer system.Considering one pipe as a tree node,all pipe information was stored in the node.After studying all tree traversal methods including pre-order,in-order and post-order,it is found that post-order traversal was suitable to hydraulic calculation of storm sewer system.Enumerable standard diameter was used in the optimal calculation to speed up the calculation and save time.An optimal design program was developed with Delphi due to its excellent man-machine interface and strong expansibility.At last the optimal design of the storm sewer system of a residential area in Tianjin was performed with the program,and the economic and reasonable results were achieved.