The dynamic time history and push-over analyses of SRC ( Steel-Reinforced Concrete) frame-supportedshear wall structures with and without viscous dampers were carried out to obtain the seismic demand and capacitycurves,and the seismic performances of the structures were evaluated and the expected performance objects wereverified.Then,by analyzing the distribution and development of plastic hinges,the failure mechanism of the structureswas investigated.The results show that viscous dampers effectively decrease the seismic responses of the structures,that the peak displacement and the maximum inter-story drift angle of the structures respectively decrease by35% and 38% under earthquake actions with different intensities,that the seismic demand of the structure withviscous dampers decreases by 14% to 54%,that beam hinge failure is dominant in the structure fai-lure,and thatmost of transfer components and shear walls are still kept in weakly nonlinear state when the structure fails.Thus,the seismic performance object,namely transfer components and shear walls at the transfer and refuge stories are inelastic state under medium earthquake actions,is achieved.