非对称连体双塔高层建筑的风荷载分布特征风洞试验研究  

Wind tunnel test study on characteristics of wind load distribution of asymmetric connected twin-tower tall building

作　　者：王腾飞[1] 邹良浩[2] 孙艳[1] 

机构地区：[1]武汉科技大学城市建设学院,湖北武汉430065 [2]武汉大学土木建筑工程学院,湖北武汉430072

出　　处：《四川建筑科学研究》2017年第4期27-32,共6页Sichuan Building Science

基　　金：国家自然科学基金(51478369)

摘　　要：以某近距离非对称连体双塔高层建筑为研究对象,基于刚性模型表面测压风洞试验,得到两个单塔楼的平均风压系数分布,并计算得到双塔楼局部、整体体型系数和平均整体体型系数,以此为基础研究了双塔楼结构的风荷载分布及其相互之间的干扰效应。结果表明:由于相邻塔楼和连体结构的干扰,塔楼局部迎风面出现负压,背风面出现正压;干扰效应对X向风荷载影响更为明显,双塔楼平均整体体型系数未超出规范要求,按规范设计偏于安全;中间连体由于"狭缝效应"Y向体型系数比较大,应加强风荷载设计。In order to study the wind load interference effect between towers of twin-tower tall building,a wind tunnel test on the rigid model of an asymmetrical connected twin-tower tall building is conducted to obtain the distribution of the average wind pressure coefficient of the two single tower. Then the local shape coefficient and the average integral body coefficient of the twin-tower building are obtained by further data process to study the characteristics of wind load distribution and the interference effect between two towers.The results show that there is negative pressure on the windward side and positive pressure on the leeward side due to the interference of neighboring towers and the connected structure; the interference effect has much more influence on wind load in X direction than that in Y direction. The average integral body coefficient of twin-tower building is within the code requirements,in other words,the design tends to be safe. The body coefficient of middle connected structure in Y direction is relatively large due to'slit effect',thus the design of the wind load should be strengthened.

关 键 词：高层建筑 连体结构 风洞试验 体型系数 干扰效应 

分 类 号：TU312.1[建筑科学—结构工程]