某双塔楼表面风压的非高斯特性研究  

NON-GAUSSIAN FEATURES OF THE WIND-INDUCED PRESSURE ON THE TWIN-TOWER TALL BUILDING

作　　者：李进晓[1] 楼文娟[1] 

机构地区：[1]浙江大学结构工程研究所,杭州310058

出　　处：《低温建筑技术》2010年第5期35-37,共3页Low Temperature Architecture Technology

基　　金：国家自然科学基金资助项目(50578144)

摘　　要：通过对某双塔高层建筑进行了风洞试验,对该双塔高层建筑表面风压的非高斯分布特性进行了研究;基于各风向角下风压系数的三阶、四阶矩统计量,对高层建筑各立面风压进行了高斯与非高斯分布的分区;最后,对高斯区和非高斯区设计风压系数的峰值因子取值问题进行了探讨,发现在实际应用中对非高斯区的峰值因子取值偏小。The non-Ganssian features of the wind-induced pressure on the twin-tower tall buildings are studied through the wind tunnel tests. Based on the third and the fourth order statistical moments of wind pressure coefficients, the Gaussian and non-Gaussian regions of the wind pressure at a given wind direction are identified on the surfaces of the twin-tower tall buildings, respectively. Finally, the determination method of peak factor for the design wind pressure coefficient at the Gaussian and non-Gaussian regions are discussed. It was concluded that the current code-specified values of peak factor are fiskily used at the non-Gaussian region in some wind engineering practices.

关 键 词：双塔高层建筑 风荷载 非高斯特性 峰值因子 

分 类 号：TU312[建筑科学—结构工程]