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