基于暴雨强度公式的设计雨型  

Design Rain Pattern Based on Rainstorm Intensity Formula

作　　者：卓雄 格日乐 上官海东 梁小光 李树平[2] ZHUO Xiong;GE Rile;SHANGGUAN Haidong;LIANG Xiaoguang;LI Shuping

机构地区：[1]福州城建设计研究院有限公司,福建福州350001 [2]同济大学环境科学与工程学院,上海市200092

出　　处：《城市道桥与防洪》2022年第11期118-121,144,I0013,共6页Urban Roads Bridges & Flood Control

基　　金：福建省建设科技研究开发项目(2019-K-49)。

摘　　要：排水管渠系统计算机模型常需要采用设计雨型作为降雨量输入,其中基于暴雨强度公式的设计雨型是常用方法之一。研究中分析了均匀强度雨型、三角雨型、交替块状雨型和芝加哥雨型的构造方法;通过示例说明了这几种雨型的雨峰强度、降雨深度、雨峰位置系数的特点,以及在汇水面积中形成的峰值流量、总径流量、到达峰值流量时间等径流特征。其中芝加哥雨型在雨峰强度、降雨深度、引起的峰值径流量数值均较大,且到达峰值径流量时间较短,在基于风险的雨水管渠系统设计中,其计算结果较为保守,因此推荐使用。The computer model of drain channel system often needs to use the design rain pattern as the rainfall input,in which the design rain pattern based on the rainstorm intensity formula is one of the common methods.The structural methods of the uniform intensity rain pattern,triangular rain pattern,alternating block rain pattern and Chicago rain pattern are analyzed.The characteristics of rain peak intensity,rainfall depth and rain peak position coefficient of these rain patterns are explained including the runoff features of peak flow,total runoff and time to peak flow formed in the catchment area through the examples.In which,the rain peak intensity,rainfall depth and caused peak runoff of Chicago rain pattern are all large,and the time to reach the peak runoff is short.In the design of rainwater channel system based on risk,the calculation results are relatively conservative.Therefore,Chicago rain pattern is recommended for use.

关 键 词：暴雨强度公式 设计雨型 径流 

分 类 号：TU992[建筑科学—市政工程]