摩擦摆隔震支座隔震性能研究

DESIGN AND RESEARCH OF THE FRICTION PENDULUM VIBRATION ISOLATION BEA RING

隔震技术可以有效隔离地震能量,减小地震对上部结构的影响,减轻地震对建筑结构造成的损害。摩擦摆隔震支座具有布置简单、周期可控、自回复能力强等特点,具有广阔的发展前景。通过对单个支座进行力学性能分析,研究支座回复力模型,并通过有限元分析,研究了支座竖向承压能力和滞回曲线以及各参数对摩擦摆隔震支座隔震性能的影响。结果表明摩擦摆隔震支座的隔震性能只与自身有关,匀速和变速位移荷载控制下,摩擦摆隔震支座滞回曲线饱满,各参数对支座都有不同的影响,可以为实际的工程应用提供一定的借鉴参考。

Isolation technology can effectively isolate seismic energy,reduce the impact of earthquakes on the upper structure,and reduce the damage caused by earthquakes to building structures,which features simple layout,control-lable period,and strong self-recovery ability.The bearing recovery force model is established for analyzing the me-chanical properties of a single bearing.Through the finite element analysis,the vertical bearing capacity and hystere-sis curve of the bearing,as well as the influence of various parameters on the isolation performance of friction pendu-lum isolation bearings are studied.The results show that the isolation performance of the friction pendulum isolation bearing is only related to itself.Under the control of uniform and variable displacement loads,the hysteresis curve of the friction pendulum isolation bearing is full,and each parameter has different effects on the bearing.