屋面雨水系统集水沟排水量计算问题分析  

Analysis the caculation of flow capacity of the gutter for raindrainage system of building roof

作　　者：李雪飞 LI Xuefei(Tianjin University Research Institute of Architectural Design and Urban Planning Co.,Ltd.,Tianjin 300073,China)

机构地区：[1]天津大学建筑设计规划研究总院有限公司,天津300073

出　　处：《给水排水》2021年第7期83-88,共6页Water & Wastewater Engineering

摘　　要：对《建筑屋面雨水排水系统技术规程》(CJJ 142-2014)给出的集水沟排水量计算公式:曼宁公式与水平沟计算公式在计算值上的差异进行对比,从水力学角度分析不同坡度下公式选用的合理性,总结两个计算公式的适用情况。The calculation formula of drainage capacity of gutter given in Technical specification for raindrainage system of building roof(CJJ 142-2014):the difference between Manning formula and level gutter formula in calculation value is compared.The rationality of formula selection under different gradient is analyzed from the perspective of hydraulic mechanics and the application of two calculation formulas is concluded.

关 键 词：集水沟 排水量 坡度 水平 曼宁公式 水平沟计算公式 

分 类 号：TU823.6[建筑科学] TU201.1