典型超高层建筑风荷载的风洞试验研究

Wind Tunnel Study of Wind Loads on a Typical Super-high Rise Building

通过测力风洞试验对典型超高层建筑风荷载的作用机理进行了系统的研究。评估了各风力脉动分量的相关特性,研究了结构顺风向、横风向和扭转基底谱的分布特征,分析了结构三维等效静力风荷载及顺风向风振系数,并与规范结果进行了对比研究。研究成果可为超高层建筑的抗风设计及相关研究提供有用的资料及依据。

The mechanics of wind load on a typical super-high rise building were evaluated by a wind tunnel test in boundary layers. The cross-correlations among various wind loading components were presented and discussed in detail. In addition, further studies were conducted to investigate the spectral characteristics of along-wind, across-wind and tor- sional components. The equivalent static wind loads and the wind-induced amplifier factors of the building were caculated based on the wind tunnel results and compared with those estimated from the building design codes of China. The out- comes of this study are expected to be valuable for the design of super tall buildings.