Since the shape memory alloys re-centring damper is provided with hysteretic curve in the "double flag" type, to suppress the response of structure and get the capacity of fully re-centring, the new isolation system combining the above damper with laminated rubber bearing is proposed.

Various types of the fluid viscous devices widely used in bridge constructions both domestically and internationally, such as lock-up devices, fluid viscous dampers, fuse dampers, limited displacement dampers and friction viscous dampers, are introduced.

Discussion of energy dissipation effect while considering out-plane dynamic characteristic of displacement-dependent dampers;