THE ANALYSIS OF DYNAMIC RESPONSE OF COMPLEX SLOPE

This paper built four kinds of numerical analysis models of slope, inputting Ban Shen seismic waves. Summarizes the dynamic response of the law. Calculated result shows that: 1 the hardness-upward slope demonstrates larger amplification effect of acceleration than the softness-upward slope basically according to acceleration dynamic responses. Forthermore, vertical excitation concentrate than those in horizontal excitation, the largest amplification of horizontal acceleration is 1.5 to 2.0 times than the vertical acceleration.2 Soft rock is more sensitive to seismic waves than hard rock, under the strong earthquake, the hardness-upward slope is apt to fail according to the displacement.3 Rock slope with soft foundation demonstrates larger amplification effect of acceleration than the rock slope with no soft foundation according to acceleration and displacement dynamic responses. However, evolution of stress field shows that before the failure of the slope, the existence of soft foundation can reduce the role of earthquake dynamic effect to a certain extent, which is positive to slope stability.