上海市内环线高架道路雨水排水设施分析研究

On the Elevated Road Rainwater Drainage Facility in Shanghai

以上海市内环高架道路雨水排水系统为研究对象 ,从路面坡度对雨水汇水距离的影响入手 ,分析了汇水距离与汇流时间和暴雨强度的关系 ,找出了路面坡度和降雨量与路面积水深度的关系 ,以及雨水口、降雨量和雨水口的超越流量的关系。在对排水管线的分析上 ,提出把排水管线系统分为 4个部分进行分别考虑的思想 ,从而得出雨水口的形式与尺寸、排水短管和悬吊管是制约高架道路雨水排水的关键因素 ,并提出在实际工程设计时对排水管线进行分段计算的要求。

Under the research and investigation on the inner ring elevated road of Shanghai, this paper begins with the infections of the road slop to the storm catchment's distance. It presents the relationship of catchment's distance, time and rainstorm intension. It also presents the relationship of road slop, rainfall and rainwater depth of the road and the relationship of gully, rainfall and the gully overflow. This paper presents an idea that we should separate the drainage system into 4 parts to compute. It concludes that the type and size of gully, short drainpipe and suspended drainpipe are the main infectors for the storm drainage system of the elevated road.