铅芯橡胶减震支座的非线性动力性态研究

Nonlinear Dynamic Behavior of Lead Rubber Bearing

利用慢变参数、时程分析和能量分析方法，探讨了铅芯橡胶减震支座（ＬＲＢ） 的非线性动力性态．结果表明，ＬＲＢ 具有强非线性特性，采用ＬＲＢ 能有效地降低系统的谐振峰值，但将增加系统的高阶振型．ＬＲＢ的合理配置，可减少系统地震能量的输入。

Slowly parameter,nonlinear time response analysis and energy approach can be used to obtain the dynamic behavior of lead rubber bearing (LRB).Amplitude of the system can be reduced by elevating the mode of excitation. The earthquake energy transmitted to a system can thus be reduced by installing the optimal LRB.