【摘要】 用耗能装置连接两相邻结构是减小结构地震响应的一种实际而有效的方法。文中将两个用非线性干摩擦阻尼器连接的相邻结构简化为两自由度系统,对结构在地震激励下的运动方程进行等效线性化处理,求得结构在过滤白噪声地震激励下的Lyapunov方程。利用最速下降法迭代求得系统的平稳响应。结果表明:干摩擦阻尼器能有效地降低结构的地震响应,并能在较宽的频率范围内起到很好的减震作用。更多还原

【Abstract】 The two adjacent buildings with energy dissipation devices are a practical and effective approach to mitigating seismic response.The two adjacent buildings connected with non-linear dry friction damper are simplified as a two-degree-of-freedom system.For the equation of motion of the system under seismic excitation,the Lyapunov equation is derived using equivalent linearization method.The seismic load is treated as filtered white noise excitation,and then the stationary response is obtained by iteration with steepest descent algorithm.The results of analysis demonstrate that the non-linear dry friction damper could mitigate effectively structural seismic response and offers wideband vibration suppression for earthquake attacks.更多还原