Abstract: Firstly, it is analyzed bond mechanism between anchor and soil in anchor slope under dynamic loads; then a simplified dynamic model of interaction between anchor and soil is proposed; and a dynamic responses analytical solution to anchor and soil system is deduced. According to this simplified dynamic model of anchor and soil, a numerical model of anchor slope is established by ANSYS program. And the effects of anchor parameters, such as elasticity modulus, cross-section area, length, space on seismic performances, such as displacement, acceleration, stress of anchor slope under the effect of seismic load are analyzed. Analysis results indicate that the anchor parameters have different effects on seismic performance of anchor slope. Increasing anchor cross section area is able to improve seismic stability of slope effectively; and decreasing anchor space is also beneficial for improving seismic performance of anchor slope; while changing elasticity modulus and cross section area have little effect on enhancing seismic performance of slope, instead increasing elasticity will play negative role for improving seismic performance of anchor slope. These conclusions may provide some references for anchor slope seismic design.

Key words: anchor parameters, anchor slope, seismic performance, ANSYS, simplified dynamic model, seismic stability