Investigation of Advanced Seismic Isolator Coupled with S-shaped Steel Dampers

There are some hybrid base isolation systems proposed to improve dissipated energy capacity of base isolation systems with different dissipation devices, for example shape memory alloy wires, ADAS dampers and slit steel dampers. In the present research, the novel hybrid seismic isolation system including seismic isolator with S-shaped steel dampers (SSSDs) is proposed and investigated to improve the energy dissipation capacity of the hybrid isolation system and decrease the displacement of the superstructure. Using finite element method, the numerical models of seismic isolator with S-shaped steel dampers are established and simulated under monotonic and cyclic loading tests. Based on the simulation data of seismic isolator with S-shaped steel dampers, mechanical properties of the novel isolation system are analyzed and compared, which can supple the practical application.