Hysteretic devices are essential for base-isolated buildings to control the deformation in the isolation system and to dissipate the earthquake-induced energy. U-shaped steel dampers dissipate energy through plastic deformation of specially designed steel elements. This paper investigates the performance of U-shaped steel dampers for the seismic isolation system as well as comparison with lead rubber bearings. For this purpose, both isolators are attached to a 5-storey building. Nonlinear time history analysis is carried out for four different earthquake ground motions. The results show that the response quantities are significantly reduced; therefore structural damages are minimized in both isolation systems.

滞后装置对于基础隔震建筑物控制隔震系统中的变形并消散地震感应能量至关重要。U型钢制阻尼器通过特殊设计的钢构件的塑性变形来耗散能量。本文研究了U型钢减震器在隔震系统中的性能，并与铅橡胶轴承进行了比较。为此，两个隔离器都连接到一栋五层楼高的建筑上。针对四个不同的地震地面运动进行了非线性时程分析。结果表明，响应量显着减少。因此，两个隔离系统中的结构破坏都最小化。