½éÉÜ£º Abstract£ºA series of centrifuge mode1 tests of sandy slopes were conducted to study the dynamic behavior of pile¡ªreinforced slopes subjected to various motions£®Time 1listories of accelerations£®bending moments and pile earth pressures were obtained during excitation of the adjusted El Centro earthquake and a cyclic motion£®Under a realistic earthquake£®the overall response of the pile¡ªreinforced slope is lower than that of the non£®reinforeed slope£®The histories of bending moments and dynamic earth pressures reach their maximums soon after shaking started and then remain roughly stable unti1 the end of shaking£®Maximum moments occur at the height of 3£®5 m£®which is the deeper section of the pile£®indicating the interface between the active loading and passive resistance regions£®The dvnamic earth pressures above the slope base steadily increase with the increase of height of pile£®For the model under cyclic input motion£®response amplitudes at difierent locations in the slope are almost the same£®indicating no significant response amplification£®Both the bending moment and earth pressure increase gradually over a long period£®