巨型框架多功能减振体系脉动风振反应的随机振动分析  

ANALYSIS OF RANDOM VIBRATION RESPONSE OF MULTIFUNCTIONAL VIBRATION -ABSORPTION MEGAFRAME STRUCTURE SUBJECTED TO PULSATING WIND

作　　者：张敏[1] 蓝宗建[1] 

机构地区：[1]东南大学土木工程学院,南京210096

出　　处：《工业建筑》2003年第11期35-38,48,共5页Industrial Construction

基　　金：国家自然科学基金资助项目 (批准号 :597780 4 0 )

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。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.

关 键 词：巨型框架 脉动风振反应 频率响应函数 谱密度 均方差 橡胶垫 结构振动 

分 类 号：TU352.1[建筑科学—结构工程]