安装乙字弯避梁对排水系统通水能力的影响  

Influence of Installing Offset Pipe on Water Flow Capacity of Drainage System

作　　者：官钰希 尹浩然[2,3] 任少龙 吴克建 方正 GUAN Yu‑xi;YIN Hao‑ran;REN Shao‑long;WU Ke‑jian;FANG Zheng(Shenzhen Water and Environment Group Co.Ltd.,Shenzhen 518031,China;School of Civil Engineering,Wuhan University,Wuhan 430072,China;SZMS Nanshan Innovation School,Shenzhen 518000,China;National Building Drainage System Technology Center Laboratory,Shanxi Xuanshi Industrial Group Co.Ltd.,Jincheng 048400,China)

机构地区：[1]深圳市环境水务集团有限公司,广东深圳518031 [2]武汉大学土木建筑工程学院,湖北武汉430072 [3]深圳市深中南山创新学校,广东深圳518000 [4]山西泫氏实业集团有限公司全国建筑排水管道系统技术中心实验室,山西晋城048400

出　　处：《中国给水排水》2024年第3期67-72,共6页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51978526)。

摘　　要：在高层建筑中,由于不同楼层功能不同会导致梁柱存在错位,故安装排水系统时需要进行避梁处理,工程中通常采用安装乙字弯的方式来解决,但该设置方式会对立管排水能力产生极大影响。因此,对这种特殊安装方式与采用防返流H管连接的专用通气排水系统进行了对比,观测了排水过程中各楼层的压力波动、水封损失、排水系统通气量等特征参数。结果表明,未安装乙字弯但设置了防返流H管连接的专用通气排水系统最大排水量为11.0 L/s,而安装乙字弯避梁的排水系统只有6.5 L/s,在乙字弯上方安装防返流H管时系统最大排水量为8.0 L/s,说明该措施可以降低乙字弯偏置对排水系统带来的压力波动,从而增大立管排水能力。Due to the different functions of different floors,there will be misplacement of beams and columns in high‑rise buildings.Therefore,beam avoidance treatment is required when installing the drainage system.The solution is usually to install offset pipe in the project.However,this setting will greatly affect the drainage capacity of the riser.This paper compared the special installation method with the special ventilation and drainage system with anti‑reflux H‑pipe connection,and monitored the characteristic parameters such as pressure fluctuation,water seal loss and drainage system ventilation of each floor during the drainage process.The maximum drainage flow rate of the special ventilation and drainage system without offset pipe but with an anti‑reflux H‑pipe connection was 11.0 L/s.However,the drainage system with offset pipe was only 6.5 L/s,and the maximum drainage flow rate was 8.0 L/s when the anti‑reflux H‑pipe was installed above the offset pipe,indicating that the measure reduced the influence of the pressure fluctuation exerted by the offset joint and increased the water flow capacity of the riser.

关 键 词：乙字弯 建筑排水系统 防返流H管 通水能力 压力波动 水封损失 

分 类 号：TU992[建筑科学—市政工程]