上海市设计雨型对雨水管网模拟的影响研究

Influence of rainfall pattern on storm drainage network modeling in Shanghai

采用推理公式法设计了上海A地区的雨水管网系统,并在此基础上,分别以芝加哥雨型和Pilgrim&Cordery雨型作为设计雨型,利用城市雨水模拟管理软件(SWMM)建立该区域雨水模拟模型。模拟结果表明,雨型对积水的模拟结果有较大影响,主要体现在积水时长、最大积水深度和受积水影响的面积大小上;对于上海地区,推荐使用P&C雨型作为设计雨型,在此雨型下设计的管网更安全。

Reasoning formula method was used to design the storm drainage network of area A in Shanghai. On this basis,the designed network was modeled using SWMM. Chicago rainfall pattern and Pilgrim Cordery rainfall pattern were respectively adapted to the model. It was shown that rainfall pattern substantially changes the simulation result on ponding,mainly on ponding time,maximum ponding depth and ponding area.Storm drainage network designed with Pilgrim Cordery rainfall was more likely to meet the drainage requirement,so it was recommended in Shanghai.