A new type of damper is developed

which has the functions of shock resistance and multidirectional energy dissipation.The damper can be assembled with wind resistance bearing and applied in long-span bridges to meet the wind resistant and seismic performance requirements.When applied in high-speed railway bridges

the damper can ensure the safety of the bridge and the moving trains.The basic structure and working principle are introduced.The shock resistance is verified by impact test.Experimental studies on the performance of the damper with changing loading frequency

displacement amplitude and temperature are carried out.The test result shows that the hysteresis curves of the damper are plump

which indicates the damper has excellent energy dissipation capacity.It’s a velocity dependent damper.The damper is studied with Maxwell theory.The calculating formulas of relevant parameters are given.The results between theory and experimental value show good consistency.The viscosity of the damping liquid is the important factor that affects the energy consumption performance.It is necessary to choose the viscous materials of good temperature stability.