基于小波分析的高层建筑气动阻尼评估方法

被引:9
作者
吴海洋
梁枢果
邹良浩
机构
[1] 武汉大学土木建筑工程学院
关键词
小波分析; 高层建筑; 气动阻尼比; 复Morlet小波;
D O I
10.13465/j.cnki.jvs.2008.08.036
中图分类号
TU973.2 [];
学科分类号
081405 ;
摘要
将小波分析应用到结构风工程领域,介绍了一种基于小波分析的高层建筑气动阻尼评估方法,该方法不仅适用于单自由度高层建筑气弹模型的气动阻尼比识别,而且适用于多自由度高层建筑气弹模型的气动阻尼比识别。运用改进的随机减量技术(IRDT)对一多自由度高层建筑气弹模型风洞试验数据进行分析,得到顺、横风向顶部加速度的随机减量特征信号(RDS),然后对该特征信号进行连续的复Morlet小波变换,最后计算得到该高层建筑顺、横风向侧向振动的一阶气动阻尼比,并且总结出其变化规律。
引用
收藏
页码:93 / 96+180 +180
页数:5
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