基于3D-BASIS-ME摩擦摆隔震系统隔震效果分析

Isolation Effects Analysis of Friction Pendulum System Based on 3D-BASIS-ME

摩擦摆隔震系统(FPS)由于其独特的结构形式,具有限位、自动复位以及通过滑动摩擦消耗地震能量等优点,能有效地减少地震作用对上部结构的影响,隔震效果明显,因此近年来得到广泛的应用。为了更深入地研究摩擦摆隔震系统的隔震效果及其影响因素,基于摩擦摆隔震系统的基本特性与隔震机理,利用隔震计算专用软件3D-BASIS-ME对隔震框架结构在不同地震波作用下的隔震效果进行了分析计算,与文献试验结果进行对比,发现数值结果与试验结果吻合良好,从而验证了3D-BASIS-ME软件计算的准确性与可行性,在此基础上对不同合成刚度的摩擦摆隔震系统的隔震效果进行数值分析,并确定了隔震效果最佳时,隔震系统的刚度范围,其结论可为实际工程的设计提供参考。

Because of unique structure configuration and advantage of limit position,automatic reset,seismic energy consumption and other advantages of sliding friction,friction pendulum system（ FPS） can effectively reduce the impact of the earthquake on the upper structure,so seismic isolation effect of FPS is obvious and it has been widely used in recent years. For more in-depth study of isolation effect of friction pendulum system and its influencing factors,based on the basic characteristic and isolation mechanism of FPS,the special isolation calculation software 3D- BASIS- ME was adopted in this paper to analyze isolation effect of a certain isolation frame structure under different input seismic waves. Compared with the test results,the feasibility and accuracy of 3D- BASIS- ME program were verified. Then the vibration isolation effect of the friction pendulum isolation bearings system under different stiffness conditions with 3D- BASIS- ME program were analyzed,and the appropriate stiffness value range of vibration isolation systems under the best isolation effect were determined. The study shows that the numerical results from the 3D- BASIS- ME are in good agreement with experiment results and the research results provides reference for practical engineering design.