P&C雨型在城市排水计算中的适用性分析
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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。
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 establish 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 &Cordery 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 pattern in other cities.
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 establish 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 &Cordery 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 pattern in other cities.
引文
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[5]岑国平,沈晋,范荣生.城市设计暴雨雨型研究[J].水科学进展,1998,9(1):41-46.
[6]刘伟.城市暴雨地面积水量分析研究[D].西安:长安大学,2006.
[7]蒋明.新暴雨形势下上海市暴雨强度公式修编研究[J].中国给水排水,2015,31(15):114-117.
[8]庄智福,王珂清,杨杰,等.镇江市新一代暴雨强度公式研制及雨型设计[J].气象科学,2015,35(4):506-513.
[9]徐连军,励建全,李田,等.上海市短历时暴雨强度公式研究[J].中国市政工程,2007(4):46-48,94.
[10]牟金磊.北京市设计暴雨雨型分析[D].兰州:兰州交通大学,2011.
[11]GB 50014-2006,室外排水设计规范(2014版)[S].北京:中国计划出版社,2014.
[12]刘俊,郭亮辉,张建涛,等.基于SWMM模拟上海市区排水及地面淹水过程[J].中国给水排水,2006,22(21):64-66,70.
[2]Huff F A.Time Distributions of Heavy Rainstorms in Illinois[J].Water Resources Research,1967,3(4):1 007-1 019.
[3]Pilgrim D H,Cordery I.Rainfall Temporal Patterns for Design Floods[J].Journal of Hydraulics Division,1975,10(1):81-95.
[4]Yen B C,Chow V T.Desgn Hyetographs for Small Drainage Structures[J].Journal of the Hydraulics Division,ASCE,1980,106(6):1 055-1 076.
[5]岑国平,沈晋,范荣生.城市设计暴雨雨型研究[J].水科学进展,1998,9(1):41-46.
[6]刘伟.城市暴雨地面积水量分析研究[D].西安:长安大学,2006.
[7]蒋明.新暴雨形势下上海市暴雨强度公式修编研究[J].中国给水排水,2015,31(15):114-117.
[8]庄智福,王珂清,杨杰,等.镇江市新一代暴雨强度公式研制及雨型设计[J].气象科学,2015,35(4):506-513.
[9]徐连军,励建全,李田,等.上海市短历时暴雨强度公式研究[J].中国市政工程,2007(4):46-48,94.
[10]牟金磊.北京市设计暴雨雨型分析[D].兰州:兰州交通大学,2011.
[11]GB 50014-2006,室外排水设计规范(2014版)[S].北京:中国计划出版社,2014.
[12]刘俊,郭亮辉,张建涛,等.基于SWMM模拟上海市区排水及地面淹水过程[J].中国给水排水,2006,22(21):64-66,70.