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.
出处
《地震工程与工程振动》
CSCD
北大核心
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)
关键词
基础隔震
非比例阻尼
地震工程
隔震结构
base isolation
damping
dynamic analysis
non-proportional damping, earthquake engineering
