拟负刚度与粘滞阻尼混合减振结构的动力特性与减振效果分析  

Analysis of dynamic characteristics and control performance of structures with pseudo-negative stiffness and viscous dampers

作　　者：史鹏飞[1] 吴斌[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《振动与冲击》2009年第11期163-167,211,共6页Journal of Vibration and Shock

基　　金：国家重点基础研究发展计划(973计划)项目(2007CB714204);国家科技支撑计划项目(2006BAJ03B06)

摘　　要：对拟负刚度与粘滞阻尼混合减振结构的动力特性与减振效果进行了研究。首先,通过加速度放大系数和位移放大系数对拟负刚度与粘滞阻尼混合减振结构的动力特性进行分析。其次,通过反应谱对地震作用下拟负刚度与粘滞阻尼混合减振结构的减振效果进行分析,并与粘滞阻尼减振结构的减振效果进行比较。研究结果表明:拟负刚度控制能够延长结构的等效周期;当结构周期较长时,拟负刚度与粘滞阻尼混合减振结构对绝对加速度和相对位移的减振效果好于粘滞阻尼减振结构。Dynamic characteristics and control performance of structures with pseudo-negative stiffness and viscous dampers were studied.Dynamic characteristics were analyzed by use of transmissibility and dynamic magnification factor of structures and control performance of structures subject to earthquake excitation was studied by use of response spectrum,and then compared with that of conventional structures with viscous dampers.The results show that pseudo-negative stiffness control system can prolong the equivale...

关 键 词：拟负刚度控制 粘滞阻尼控制 加速度放大系数 位移放大系数 反应谱 

分 类 号：TU352.1[建筑科学—结构工程]