典型屋面雨水排水系统的排水效能分析  

Drainage effectiveness analysis of typical roof rainwater drainage system

作　　者：何婷婷[1] 史志鹏[1,2] 吴小青[3] HE Tingting;SHI Zhipeng;WU Xiaoqing(School of Construction Equipment and Municipal Engineering,Jiangsu Vocational Institute of Architectural Technology,Xuzhou,Jiangsu 221116,China;College of Water Resources and Architectural Technology,Northwest A&F University,Yangling,Shaanxi 712100,China;School of Architectural Design and Decoration,Jiangsu Vocational Institute of Architectural Technology,Xuzhou,Jiangsu 221116,China)

机构地区：[1]江苏建筑职业技术学院建筑设备与市政工程学院,江苏徐州221116 [2]西北农林科技大学水利与建筑工程学院,陕西杨凌712100 [3]江苏建筑职业技术学院建筑设计与装饰学院,江苏徐州221116

出　　处：《江苏建筑职业技术学院学报》2017年第3期47-50,共4页Journal Of Jiangsu Vocational Institute of Architectural Technology

基　　金：住房和城乡建设部2016年科学技术项目:苏北地区屋顶绿化及雨水回收利用技术研究(2016-K1-028);江苏省住房与城乡建设厅2016科技项目:校园内海绵系统建设的目标;方法与关键技术研究(2016ZD80)

摘　　要：为了进一步给屋面排水系统选型提供依据,选取重力型、虹吸型和雨控型屋面排水系统为研究对象,采用FLUENT软件进行排水过程的模拟,研究3种系统的排水流量、管道压力和最大排水面积.结果表明:雨控型屋面排水系统虽然排水流量小,但是可承担较大的排水面积,节能减耗潜力较大;虹吸雨水系统在立管管段产生的负压范围大,并且最大负压值也最大,可在减小管径的条件下在很短时间内将雨水排走,适合大型建筑和高层建筑使用.In order to provide a basis for system selection of roof drainage system,we select three kinds of roof drainage system such as the gravity rainwater drainage system,siphon roof rainwater drainage system and rain control rainwater drainage system as the research objects,using FLUENT software for simulating the drainage process of the three kinds roof drainages and study the drainage flow?pipe pressure and maxi-mum drainage area.The result shows that although the rain control type roof drainage system drainage flow is small?but it can bear larger drainage area and its potential of energy conservation and consumption reduction is great.The siphon rainwater drainage system has maximum negative pressure and biggest nega-tive pressure range in vertical tubes and the rainwater can be drained away as soon as possible while its pipe diameter decreases,which is suitable for large and high-rise buildings.

关 键 词：屋面排水 重力型 虹吸型 雨控型 

分 类 号：TU992[建筑科学—市政工程]