雨水渗入高层建筑的机制研究

Study on Rainwater Infiltration Mechanism of High Rise Buildings

为解决高层建筑的渗漏问题,依托实体工程,建立模型研究了风压、建筑高度、建筑外表面构造型式等因素对裂缝水微观流动机制的影响。结果表明:雨水进入裂缝时,其初始流速受风压影响显著。当风压增加时,初始流速会随之增大,其渗流速度受裂缝内部分布压力的影响不大;随着建筑物高度的增加,雨水的初始速度会随之增大,在高度为100~150 m处,其初始流速显著增加,而后呈现缓慢增加的趋势;裂缝内部雨水的初始流速和内部流速由小到大依次是墙面、凹进部位、挑出部位和阳角处。

In order to solve the leakage problem of high-rise buildings,relying on practical project,a model was established to study the influence of wind pressure,building height and surface configuration on the micro flow mechanism of crack water.The result shows the initial velocity of rainwater entering the fracture is obviously affected by wind pressure,and it increases with the increase of wind pressure.The distribution pressure in the fracture has little effect on the seepage velocity.The initial velocity of rainwater infiltration increases with the increase of building height,and the initial velocity increases significantly at the height of 100~150 m,and then increases slowly.The initial flow velocity and internal velocity in the cracks from large to small are external corners,protruding parts,concave part and walls.