【摘要】 本文采用简化的两质点模型建立基础隔震结构的振动方程,通过分析各质点位移传递函数的幅频特性,提出了隔震层阻尼比及刚度系数的优化方法,并给出了实用的参数计算公式。以某7层框架基础隔震结构为例进行数值仿真分析,结果表明,提出的基础隔震结构参数优化设计方法能同时有效降低主体结构的地震响应及隔震层的层间位移。更多还原

【Abstract】 The equations of motion for two-DOF base isolation system were established and solved for the displacement transfer function.And a parameter optimization method was proposed by analyzing the amplitude-frequency characteristic of displacement transfer function.Then the formulas to calculate the optimal parameters of isolation layer were derived.A 7 floor base isolation frame was used for numerical simulation.It shows that this parameter optimization method can both reduce the seismic response of main structure and the relative displacement of isolation layer.更多还原