Influence of input seismic load response spectrum on 2D seismic response of earth-rock dams

Due to insufficient consideration of influence of input seismic load response spectrum on aseismic calculation of earth-rock dams,the influences of acceleration response spectrum,velocity response spectrum,and displacement response spectrum of input earthquakes on seismic response of earth-rock dams were analyzed.The result showed that,if the predominant period of acceleration response spectrum approached the natural vibration period of earth-rock dams,the maximum seismic response occurred.However,the seismic frequency characteristics of earth-rock dams could not be reflected only by the predominant period of acceleration response spectrum.