cyclic loading test on high damping rubber bearing (hdrb) isolators in combination with fe-based sma dampers

Seismic base isolations have been developed and used in buildings and bridges as a technique to control their seismic behavior under severe ground motion. various types of bridge and building isolators have been developed, tested and are in used all over the world as a means of effective earthquake resisting systems. in order to dissipate seismic energy atisolators level, many designers are used hysteretic dampers in combination with isolation systems (hedayati dezfuli & alam, 2017). however, due to residual displacement at base level in this combination, the operating service of structure is interrupted after earthquake. one appropriate solution for this problem is application of shape memory alloy as hystereticmetal in damper. shape memory alloy is a novel functional material which can be recovered after unloading or upon heating (song et al., 2006).