在大气边界层风洞中对某高层住宅建筑模型进行了风压分布风洞试验,分析了单体及受扰后建筑表面风压的分布特性.结果表明:凹形立面同高度处风压的相关性高,双层悬挑屋檐中,上层受负风压控制,下层受正风压控制,顶部玻璃挡板也受正风压控制;建筑物的风压分布受周边建筑及地形的干扰后产生较大变化,尤其是1倍于干扰物高度范围内,脉动风压的大小及分布的改变十分明显;受扰后,建筑物的最小极小风压增大了28%.
A detailed test of the wind pressure distribution of a tall residential building was carried out in a Boundary Layer Wind Tunnel.The wind pressure distributions on the building were investigated.The results have shown that the correlations of wind pressures on the concave surface are very high at the same height.For the design of the double cantilevered roof,the upper is controlled by negative wind pressure and the lower by positive wind pressure.The glass tailgate at the top of the building is also controlled by positive wind pressure.The wind pressure distributions of the building are changed more noticeably if the surrounding buildings and topography exist.Especially under the height of the disruptors,the change of fluctuating wind pressure is significant.The min peak wind pressure has an increase of 28% when the building is disturbed.