Maxwell阻尼耗能隔震结构平稳响应分析  

Smooth response analysis of an isolated structure with a Maxwell damper

作　　者：李创第[1] 陶欣欣[1] 尉霄腾 

机构地区：[1]广西科技大学土木建筑工程学院,广西柳州545006 [2]广西大学土木建筑工程学院,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2015年第4期815-820,共6页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(51468005);广西自然科学基金资助项目(E08.0803)

摘　　要：为分析设置Maxwell耗能阻尼器的隔震结构的减震效果,对Maxwell阻尼耗能隔震结构平稳响应分析问题进行了系统研究。首先建立Maxwell阻尼耗能隔震结构运动方程;然后将上部结构按第一振型展开,再将结构运动方程转化为一阶状态方程组,用复模态法获得了结构在平稳白噪声地震激励作用下,隔震层相对于地面位移、速度响应方差和上部结构相对于隔震层位移、速度响应方差以及阻尼器响应方差精确解析解,并通过一算例验证了设置Maxwell耗能阻尼器的隔震结构的减震效果更好。Smooth response analysis of an isolated structure with a Maxwell damper was carried out systematically. The motion equation of an isolated structure with a Maxwell damper was established, and then the upper structure was expanded according to the first mode. The structural equation of motion was converted to a first-order state equation. The displacement and velocity response of the isolation layer relative to the ground, the displacement and velocity response of the upper structure relative to the isolation layer, and the exact solution of damping force response variance in stationary white noise excitation were obtained using the complex modal method. An example was given. The example showed that damping effect of an isolated structure with a Maxwell damper was better.

关 键 词：隔震结构 MAXWELL阻尼器 复模态法 平稳白噪声激励 

分 类 号：TU352.12[建筑科学—结构工程]