竖向地震对摩擦滑移摆隔震性能的影响

Influence of Vertical Earthquake on the Earthquake Isolation Performance of Frictional Sliding Pendulum

为了研究竖向地震对摩擦滑移摆隔震性能的影响,文章以昆明某幼儿园四层钢框架为依托,采用SAP2000通用有限元软件对该结构进行弹塑性时程分析,其中地震波采用单向、双向、三向地震波输入进行罕遇地震隔震分析,分别从结构的顶层加速度、层间位移角、支座位移等方面论述竖向地震作用对摩擦滑移摆隔震性能的影响。分析结果表明摩擦滑移摆隔震结构对竖向地震有一定的隔震效果,竖向地震对支座的水平位移影响很大,对支座的竖向位移影响较大。

In order to study the effect of vertical earthquake on the friction pendulum isolation performance, this paper takes Kunming a kindergarten four storey steel frame as the basis, uses SAP2000 finite element software for elastic-plastic time history analysis of the structure, applies the one-way and two-way, three-way seismic wave input for the seismic isolation analysis of rare earthquake, respectively.The effects of vertical seismic action on the seismic isolation performance of the frictional sliding pendulum are discussed respectively from the top acceleration of the structure, the displacement angle of the interlayer and the displacement of the bearing. The analysis results show that the friction sliding pendulum isolation structure has certain isolation effect on vertical earthquake, also the vertical earthquake has a great influence on the horizontal displacement of the support and has great influence on the vertical displacement of the support.