基于动态模拟的极限强度法雨水管渠设计流量计算方法研究  

On Calculation Method of Rainwater Conduit Design Flow Based on Ultimate Strength Method of Dynamic Simulation

作　　者：宋新伟 高玉兰 沈冬梅 涂有笑 SONG Xinwei;GAO Yulan;SHEN Dongmei;TU Youxiao(College of Architecture and Civil Engineering,West Anhui University,Lu′an 237012,China)

机构地区：[1]皖西学院建筑与土木工程学院,安徽六安237012

出　　处：《宿州学院学报》2020年第7期66-71,共6页Journal of Suzhou University

基　　金：安徽高校自然科学研究重点项目(KJ2017A411);皖西学院校级科研重点研究项目(WXZR201720);皖西学院校级自然科学研究项目(WXZR201621)。

摘　　要：推理公式法计算雨水管渠设计流量时假定雨水管渠为恒定均匀流,与管内实际流动状态不符合,排水系统规模大时造成误差积累。研究中提出基于极限强度原理和径流系数法,以推理公式计算子汇水区产流、汇流过程,以非恒定流水力计算方法模拟渠道动态汇流过程,方法结合了推理公式法和数学模型法的优点,当资料不足时可以作为重要方法使用。模拟实例计算结果表明推理公式法中的流量叠加法与动态模拟结果较为接近,当不便采用数学模型法计算时,宜采用推理公式法中的流量叠加法进行雨水管渠设计。Reasoning formula method for calculating designed flow of rainwater conduit assumes that rainwater conduit flow is constant and uniform flow,which is inconsistent with the actual flow state in the pipe.The large scale of drainage system causes error accumulation.Based on the principle of ultimate strength and the method of runoff coefficient,the process of producing and confluence of subcatchment is calculated by reasoning formula,and the dynamic confluence process of channel is simulated by the calculation method of unsteady flow.This method combines the advantages of reasoning formula method and mathematical simulation method,and can be used as an important method when the data is insufficient.The results of simulation examples show that the flow superposition method in the inference formula method is close to the dynamic simulation results.When it is not convenient to use the numerical calculation method,the flow superposition method in the inference formula method should be used in the design of rainwater conduit.

关 键 词：雨水管渠设计流量 推理公式法 数学模型法 极限强度法 动态模拟 

分 类 号：TU992[建筑科学—市政工程]