高地震烈度区某剧场减震分析与设计

Energy-dissipated Analysis and Design of a Theater in High Seismic Intensity Area

位于高地震烈度区的某剧场建筑,为改善其抗震性能,采用了布置黏滞阻尼器的减震方案。运用YJK和ETABS对原结构和减震结构进行小震反应谱分析和弹性时程分析,计算结果表明布置阻尼器后的减震方案能够有效减小地震作用下结构的层间剪力和层间位移。在PERFORM-3D中进行结构大震性能评估,其结果表明阻尼器能够正常工作并发挥耗散能量的作用,使得整体结构具有良好的抗震性能,减轻结构主要构件的损伤,更有利于实现结构“中震可修、大震不倒”的设防目标。

In order to improve the seismic performance of a theater building located in a high seismic intensity area,viscous dampers were used to improve the seismic performance.YJK and ETABS were used to analyze response spectrum and elastic time history of the original structure and the damping structure under frequent earthquake,The calculation results showed that the damping scheme with dampers can effectively reduce the inter story shear force and inter story displacement of the structure under earthquake.The rare earthquake performance of the structure was evaluated in PERFORM-3D,the results showed that the damper can work normally and play the role of dissipating energy,which made the whole structure have good seismic performance,reduced the damage of the main components of the structure,and was more conducive to realize of the goal of"repairable in moderate earthquake and not collapsing in rare earthquake".