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高层建筑裙房屋面区域行人风环境研究
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Abstract:
为了研究高层建筑裙房屋面区域的行人风环境，进行了一系列风洞试验和数值模拟研究，分析了不同建筑尺寸参数下的裙房屋面行人风速分布特性。结果表明，空气流经塔楼后，在塔楼两侧角部发生分离、绕流，使塔楼两侧的裙房屋面区域出现较大风速，且当来流风向与建筑立面呈45度夹角时风速最大。裙房屋面的最大风速和加速区面积随着裙房宽度的增大而增大，随女儿墙高度的增大而减小。基于以上分析结果，提出了计算裙房屋面最大风速的经验公式，可为行人风环境评估提供参考。
In order to study the pedestrian wind environment on podium roof of high-rise building, a series of wind tunnel tests and numerical simulations were carried out. The distribution characteristics of pedestrian wind speed on podium roof with different building size parameters were analyzed. The results show that the around flow effect will cause significant speed-up effect on both sides of the tall building, resulting in pedestrian wind speed on these areas is relatively large. The pedestrian wind speed is the largest when the angle between the incoming wind and the building facade is 45？. The maximum wind speed and the speed-up area on the podium roof increase with the width of the podium, and decrease with the height of the parapet wall. The above analysis results lead to the proposal of the empirical formula of maximum wind speed, which can provide reference for the as-sessment of pedestrian wind environment.
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