隔震结构中非经典阻尼影响及最佳阻尼比分析  

Analysis of effect of non-classical damping on isolated structure and optimum damping

作　　者：杜永峰[1] 赵国藩[2] 

机构地区：[1]甘肃工业大学,兰州730050 [2]大连理工大学,大连116023

出　　处：《地震工程与工程振动》2000年第3期100-107,共8页Earthquake Engineering and Engineering Dynamics

基　　金：甘肃省科技攻关基金!(GK974-调-8)

摘　　要：本文采用双自由度非比例阻尼振动模型描述基础隔震体系，用拉普拉斯变换方法获得其地震 时域响应的近似解析解，借助于反应港理论分析了非比例阻尼对隔震体系中的上部结构层间最大剪 力及隔震层最大位移等响应值的影响，探寻了隔震系统最佳阻尼比的取值范围．The base isolation structure is simulated by a 2 -DOF non-proportionally damped vibration system, an approximate analytical solution in time domain is derived using Laplace transfrom method. The effect of non-proportional damping on the maximum shear force in the superstructure and on the maximum isolator displacement is analyst based on response spectrum theory, and the optimum range for isolator damping ratio is studied.

关 键 词：基础隔震 非比例阻尼 地震工程 隔震结构 

分 类 号：TU352.12[建筑科学—结构工程]