高湍流度风场下金茂大厦的舒适度分析  

THE ANALYSIS OF HUMAN COMFORT OF JIN MAO BUILDING IN HIGH-TURBULENCE BOUNDARY FLOW

作　　者：洪海波[1] 谢壮宁[1] 倪振华[1] 顾明[2] 

机构地区：[1]汕头大学土木工程系,广东汕头515063 [2]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《工程力学》2007年第5期101-106,共6页Engineering Mechanics

基　　金：国家自然科学基金资助(50478118)

摘　　要：来流湍流度对超高层建筑的风振响应有很大的影响,在新模拟出更接近实际风场湍流度的流场的基础上,用高频测力天平方法对金茂大厦模型进行了风洞试验。根据试验结果及计算得到了该塔楼334m高度处的峰值加速度,分析了风向、地貌、周围建筑干扰等条件尤其是待建的环球金融中心对结构峰值加速度的影响。结果表明:已有周边建筑对结构加速度影响不大,但待建的环球金融中心则有显著的干扰影响,它有可能使得金茂大厦的峰值加速度在B类、D类地貌下分别增加55%和10%。最后,分析对比了用规范10年重现期基本风速和气象资料所得风速的加速度计算结果。Incident turbulence intensity has significant effects on the wind-induced vibration of super tall buildings. This paper presents the results and discussions on the wind-tunnel experiment of the Jin Mao building （JMB） model in the properly simulated boundary flows using the approach of high-frequency-force base balance. High turbulence intensity, which exists in realistic wind environment, was considered in the experiment. The effects of surrounding buildings, wind directions and the upstream terrain conditions on the wind-induced response were analyzed in details. The results show that World Finance Center, which is to be built soon nearby, has a remarkable interference effect on the building, while the effect of other existing surrounding buildings is negligible. The increase of the peak acceleration on the building by the interference of World Finance Center is found to be 55% and 10% in exposure categories B and D, respectively. The acceleration responses of different design wind speeds based on a 10-year return period required by the design code and the meteorological record of wind climate in the history are also analyzed and discussed.

关 键 词：高层建筑 舒适度 风洞实验 湍流度 高频底座力天平 

分 类 号：TU311.3[建筑科学—结构工程] V211.7[航空宇航科学与技术—航空宇航推进理论与工程]