海边三栋相邻高层建筑顶部台风风场实测分析

发布时间：2018-04-28 02:43

本文选题：高层建筑 + 台风　；参考：《建筑结构学报》2014年12期

【摘要】：为研究多栋高层建筑顶部的风场在台风影响下的风特性和相关性,在2013年的强台风"天兔"的登陆过程中,对海边三栋相邻的高层建筑顶部的台风风场进行了现场实测。选取适当的实测风场数据进行分析,统计了三栋建筑顶部的平均风特性和脉动风特性参数,探讨了分别位于三栋建筑顶端的3个测点的脉动风速之间的空间相关系数和相干函数。分析结果表明:此次台风中,三栋建筑顶部的平均风速和平均风向差异较小,随时间的变化趋势相似;脉动风特性的统计平均值差异较小,说明各测点之间的风速具有相关性;三栋建筑顶部测点相互之间的空间相关系数值较小,其平均值随着两测点之间距离的增加而减小;相干函数随着频率的增大而逐渐衰减,当频率接近零时,两测点间的距离越大,其相干函数值越小。
[Abstract]:In order to study the wind characteristics and correlation of the wind field at the top of several high-rise buildings under the influence of typhoon, the typhoon wind field at the top of three adjacent high-rise buildings by the sea was measured in the course of strong typhoon Tianyu landing in 2013. The average wind characteristics and pulsating wind characteristic parameters of the top of three buildings are analyzed by selecting appropriate measured wind field data. The spatial correlation coefficient and coherence function between the pulsating wind speeds at the top of three buildings are discussed. The results show that the difference of average wind speed and mean wind direction between the three buildings is small, and the variation trend with time is similar, and the statistical average value of pulsating wind characteristics is small, which indicates that the wind speed of the three buildings is correlated with each other. The spatial correlation coefficient between the measured points at the top of the three buildings is small, the average value decreases with the increase of the distance between the two measuring points, and the coherence function gradually decreases with the increase of the frequency, when the frequency is close to 00:00, The greater the distance between two measuring points, the smaller the value of coherence function.
【作者单位】：湖南大学建筑安全与节能教育部重点实验室;
【基金】：国家自然科学基金重大研究计划项目(91215302);国家自然科学基金项目(51178180,51408207)
【分类号】：TU973.213

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