双乙字弯对DN110单立管系统排水性能的影响初探

Effect of Double Offset Pipe on Performance of DN110 Single Stack Drainage System

在超高层等比例试验塔上,采用定流量排水装置排水,分别对设置有双乙字弯的DN110单立管系统和DN110普通单立管系统的压力波动情况、管顶通气流量和立管中的水流平均下降速度进行了对比测试。结果表明:当DN110单立管系统每隔5层安装1个双乙字弯时,立管中水流的平均下降速度得到减缓,但是系统的通水能力并未得到明显提高。

The constant flow generator was used to drain away water from a full-scale high-risetower. The pressure fluctuations, ventilation rates and average velocities of water were comparativelymeasured for DN110 single stack drainage system with offset pipes and DNllO conventional single stackdrainage system. The results showed that when an offset pipe was installed every five floors, the averagevelocity of water in the stack could be decreased, but the drainage capacity was not significantly ira-proved.