Abstract：Understanding exactly failure characteristic and dynamic response of accumulation slope composed of gravelly soil under action of seismic loading can provide theory guideline for anti-earthquake design of slope. In order to investigate failure characteristic and dynamic response of accumulation slope composed of gravelly soil under action of seismic loading, the laboratory shaking table test is conducted in this paper. The variation of the amplification factor of acceleration with relative elevation, dimensionless amplitude of acceleration and frequency parameter are analyzed under different type of loading wave. The typical failure characteristic of slope and the corresponding physical mechanism are discussed. Experimental results show that the amplification factor of acceleration induced by Sine wave varies little with the increase of relative elevation, and those by El-Centro wave and Wenchuan Qingping wave have a distinctly increasing trend along the increasing relative elevation. The dimensionless parameter has a slight influence on the amplification factor of acceleration at the condition of this paper. When the vibration load is up to the critical load which will destroy the slope, the accumulation slope composed of gravelly soil will be in failure quickly. The failure of slope has abruptness and the typical failure mode of shatter-collapse. The deflection of slope can be divided into two typical phases: slight deflection phase and intensely increase and large deflection phase. For the three types of wave adopted in this paper, the whole energy carried by Sine wave is the largest at the condition of same peak of wave amplitude, which can easily lead o slope failure.
