巨型框架多功能减振体系脉动风振反应的随机振动分析
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摘要
巨型框架中主框架与次框架通过夹层橡胶垫及粘弹性阻尼器相互连接 ,形成了巨型框架多功能减振体系。建立了该体系在脉动风作用下的振动方程 ,导出了主次框架振动位移及加速度的频率响应函数矩阵和谱密度矩阵 ,由此导出了主次框架各层位移及加速度的均方差。最后通过一个数值算例讨论了结构振动的影响因素
A multifunctional vibration absorption megaframe structure may be constituted, in which the main frame may be connected with the secondary frame by laminated rubber bearings and viscous damper in the megaframe. This paper presents the vibration equation of this structure, and derives the horizontal vibration displacement and acceleration frequency response function and PSD matrix of the main and the secondary frame from this equation. The mean square deviation of the horizontal vibration displacement and acceleration of every floor in the main and the secondary frame have been resulted from these matrixes. In addition, the influence factors of structure vibration have been discussed in accordance with an engineering example.
引文
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    2 欧进萍,王光远.结构随机振动.北京:高等教育出版社,1998
    3 沈 金,唐锦春,孙柄楠.联体多结构振动控制体系的地震随机振动分析.建筑结构,2001,1(1):17~32
    4 瞿伟廉,陶牟华,C hangCC.五种被动动力减振器对高层建筑脉动风振反应控制的实用设计方法.建筑结构学报,2001(4):23~31
    5 黄本才.结构抗风分析原理及应用.上海:同济大学出版社,2001.37~53

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