最佳减震效果的加层隔震结构参数优化  

Parameters Optimization Design of Adding- story Isolation Structure Considering Isolating Effect

作　　者：许航莉[1] 

机构地区：[1]福建江夏学院,福建福州350108

出　　处：《福建建筑》2015年第8期51-54,共4页Fujian Architecture & Construction

摘　　要：通过对影响加层隔震结构减震效果的三个主要参数频率比、质量比、阻尼比进行优化分析,得出适合于加层隔震结构的最优频率比取值,并通过一个工程实例验证了参数优化的合理性。分析结果表明,对于加层隔震结构,存在一个最优频率比可以在有效地控制隔震层上部结构绝对加速度反应的同时,最大限度地降低隔震层下部结构的层间位移反应,使得结构获得整体最优减震效果。The three main parameters of frequency ratio,mass ratio and damping ratio which influence the isolating effect of adding- story isolation structure are analyzed,the optimal frequency ratio that suit to adding- story isolation structure is gotten,the reasonability of parameter optimization is illustrated by a project. The results show that the isolating effect of adding- story isolation structure is good,for a actual structure,there is an optimal frequency ratio which can not only effectively control the absolute acceleration of the layers higher than the isolation layer,but also reduce the relative displacement in lower stories,In order to make the structure obtain the overall optimal isolating effect.

关 键 词：加层隔震结构 减震效果 参数优化 绝对加速度 层间位移 

分 类 号：TU3[建筑科学—结构工程]