摘要
为了分析Pilgrim&Cordery雨型在城市排水计算中的适用性,选用江苏省沭阳县中心城区连续35年的降雨资料,分别采用Pilgrim&Cordery法、芝加哥法推求短历时设计暴雨雨型。在分析两种雨型雨峰位置和形状差异的基础上,选用某小区作为典型区域,构建基于SWMM的小区排水模型,采用不同雨型计算小区排水流量,由模拟结果可知不同重现期下小区出水口Pilgrim&Cordery雨型与芝加哥雨型的峰值流量和水量均相差不大,因此认为Pilgrim&Cordery雨型与芝加哥雨型一样在城市排水计算中具有适用性,并可为其他城市短历时设计暴雨雨型分析提供参考和借鉴。
Abstract： In order to analyze the applicability of Pilgrim＆ Cordery rainstorm pattern in urban drainage calculation, based on the 35-year rainfall data in the central urban area of Shuyang County, Jiangsu Province, the Pilgrim ~ Cordery method and the Chicago method are used to ascertain short duration design rainstorm pattern. Based on the analysis of two kinds of rainstorm peak position and shape difference, a community was selected as the typical research area to estab- lish the SWMM model to calculate the drainage flow with different rainfall. The simulation results show that the peak flow and water volume obtained by the Pilgrim gaCordery rainstorm pattern have no obvious difference with the Chicago rainstorm pattern in the outlets of the drainage area under different recurrence periods. Therefore, the Pilgrim＆Cordery is suitable for urban drainage calculation, which can provide reference for analysis of short duration design rainstorm pat- tern in other cities.
出处
《水电能源科学》
北大核心
2018年第2期32-35,共4页
Water Resources and Power
基金
国家自然科学基金项目(41471015)
