萧山国际商务中心风载风洞试验研究

Experimental investigation of Xiao Shan InternationalTrade Centre in wind tunnel

本文介绍了杭州萧山国际商务中心双塔楼的表面风压风洞试验及主要试验结果,分析讨论了该双塔楼沿高度变化的体型系数、对结构的顺风向、横风向风载以及扭矩,为整体结构和表面玻璃幕墙设计提供了合理的风载荷参数。

Now wind tunnel test for single tall building is gradually popular and there is few investigation on wind tunnel test for twin-tower or multi-tower tall building. But the wind effect on twin-tower buildings is more complexity contrast to single tall building. This paper introduced the wind tunnel test for Xiao Shan International Trade Centre - a double-tower building. This twin-tower building shape is quite complexity which include arc, groove and big top rake. The test results of wind pressure coefficient under different wind direction were analyzed. In order to express wind load of the complexity shape building in the form of engineering application conventional, local partition shape coefficient method was proposed to deal with wind pressure coefficient under different wind direction. The concept of wind resultant force was put forward and three dimensional wind loads including along-wind, across-wind load and torsion moment were mainly discussed. Finally, available parameters were suggested for wind resistant design of structure and glass curtains of twin-tower tall buildings with complexity shape.