地下车库顶板Z形排水管排水能力试验

Drainage ability test of Z-shaped drainage pipe on underground garage roof

对一种用于地下车库顶板排水,立管高度为600~1 200mm的Z形排水管,进行了排水能力试验。测试了Z形排水管在不同立管高度、立管管径、配件搭配条件的排水能力,并分析了管内压力情况。试验结果表明,Z形排水管在立管高度为1 000mm的条件下,具有较好的排水能力,且在水位高度为100mm左右时,能产生较为明显虹吸现象;同时在立管段设置A接头,能使排水能力上限提升17%,激发虹吸所需水位降低17mm。

In this paper,a drainage test was conducted on a Z-shaped drainage pipe used on underground garage roof,with a height of 600 to 1 200 mm.The paper tested the drainage capacity with different riser pipe height,riser pipe diameter and accessory matching conditions,and the pressure inside the pipe was analyzed.The test results showed that the Z-shaped drainage pipe has good drainage ability under the condition that the riser height is 1 000 mm,and the obvious siphon phenomenon could occur when the water level was about 100 mm;meanwhile,the A joint could be arranged in the riser section,Making the upper limit of drainage capacity increased by 17%,and the water level required to siphon phenomenon to reduce 17 mm.