矩形截面高层建筑风力特性研究  

Investigation on the Characteristic of Wind Force Toward Tall Building with Rectangular Intersection

作　　者：陈建兰[1] 金康宁[1] 杨子松[2] 梁波[1] 

机构地区：[1]华中科技大学土木工程与力学学院,湖北武汉430074 [2]浙江大学建筑工程学院,浙江杭州310027

出　　处：《华中科技大学学报（城市科学版）》2004年第3期61-65,共5页Journal of Huazhong University of Science and Technology

摘　　要：以点同时测压法和HFBB法对9种矩形截面高层建筑模型进行风洞实验,通过对大量实验数据的处理和分析,提出了斯托罗哈数的经验公式,研究了结构的空间相关性,验证了一些相干函数经验公式的适用性.将实验得到的层风力谱合成为底部风力谱,比较了两种测试方法和风环境下的底部风力谱,最后分析了底部风力的相干性.The wind-tunnel experiments with pressure measurements on nine rectangular cross-section models and base force measurement by HFBB for a square cross-section model are presented. Through analyzing the test data, the experiential formula of the Strouhal numbers of rectangular tall building is obtained. The cross-correlation in time domain ,coherence and phase in frequency domain are also analyzed.Coherence functions of along-wind and across-wind are studied . The overall base moments are obtained by synthesis of local wind forces. Comparisons are made with the results obtained from sensitive force balances in two wind tunnels and the comparisons for eight square and rectangular models are conducted with the corresponding HFBB measurement results in UND database. Finally, the coherence among the base force components is discussed.

关 键 词：力特性 风力 测试方法 经验公式 相干性 实验数据 矩形截面 空间相关性 合成 相干函数 

分 类 号：TN911[电子电信—通信与信息系统] TM359.6[电子电信—信息与通信工程]