双椭圆形塔楼风荷载特性风洞实验研究

Wind Tunnel Research on Twin Tower Buildings Both with Elliptic Sections

本文通过风洞实验的方法研究了以椭圆形为基本截面形状，两个相邻的由条状平板搭接构成的塔楼建筑风荷载的特性。结果表明，两个相邻的塔楼在一定的风向角下会形成比单个塔楼更大的风荷载。文中根据不同风向角下的风洞实验结果，结合当地的风气象资料，给出了该建筑更加合理的表面饰物风压分布数据。对今后类似的结构设计具有参考价值。同时也说明为了达到安全性和经济性两方面的目的，在作结构设计前对这类外形有较大变化的建筑及其群体间的影响进行适当的风洞实验是十分必要的。

By means of wind tunnel test, the wind actions on twin tower buildings were studied. The results show that the construction of the cladding with pieces of plate connecting to the next one with the projecting edge causes a rather strong local negative pressure distribution on the next plate at certain wind directions. Due to the interference of the two buildings, the wind loading on twin tower is in general larger than that of a single one in most of the wind directions. On the other hand, for the purpose of wind loading design, if the local wind climate data were taken into account, the more reasonable estimation of wind loading on the surface of building could be obtained.