对称双塔楼建筑的风荷载分布特征

本文针对双塔楼建筑风场的相互干扰作用,通过风洞试验研究塔楼的风压分布,将风压沿截面进行积分求出沿结构柱网方向的合力,然后反算出沿柱网方向的整体体型系数,实现了把风洞试验结果换算为工程设计软件直接可用的数据。本文还讨论了风对高层建筑的扭矩作用,采用扭矩放大系数来考虑风致扭矩。针对某对称双塔结构的风压分布特征获得用于指导一般性对称双塔结构设计的风压和体型系数分布规律。

Distribution of wind load on symmetrical double tower tall building

In the paper, a wind tunnel test was conducted on a double tower tall building. The resultant wind loads on the sections of one tower are calculated with the data obtained from the test. The global body shape coefficients along the structural axes are then determined by back calculation which can simplify the results of wind tunnel test and be applied directly to the engineering structure design. The characteristics of wind load distribution on double tower tall building are discussed and the global body shape coefficients are proposed under various wind azimuths. The torsional moment due to wind load on the towers of the building should be taken into account through introducing the torsion magnifying coefficients.