某多层框架结构隔震分析及设计

Analysis and Design of Seismic Isolation of a Multi-Story Frame Structure

针对抗震设防烈度为8度(0.2g)的某多层框架结构进行隔震分析。利用YJK和ETABS软件建模,选取适当的地震波并且根据结构平面布置形式设置隔震支座。经计算对比分析得出,该结构在罕遇地震下剪力及轴力的最大值、水平位移以及隔震支座的应力均满足要求。最后,结合本案例给出了一个可行的隔震设计方法。希望可以为其他高烈度区框架结构的隔震设计提供借鉴。

In this paper, a multi-storey frame structure with seismic fortification intensity of 8 degree(0.2 g) is adopted for seismic isolation analysis.Using YJK and ETABS software to model, selecting appropriate seismic waves, and reasonably arranging seismic isolation bearings. After calculation and comparison analysis, the maximal shear force and axial force, horizontal displacement and stress of the isolated bearing under rare earthquakes are obtained.They all meet the design requirements. Finally, combined with this case, a feasible design method of seismic isolation buttress is provided. It is hoped that this case will provide a reference for the seismic isolation design of frame structures in other high-intensity areas.