Analysis of Retaining Wall Earth Pressure under Seismic Role

Based on the planar rupture surfaces hypothesis,the method of static equilibrium analysis was used to deduce the seismic earth pressure formula,which considers a series of factors including filled soil cohesion,fill slope angle,surface cracking of cohesive soil,and the graphic method was used to obtain analytical solution of critical rupture angle,and the effects of grading angle,the angle of fill slope,cohesive force of fill,horizontal seismic coefficient and cracking of soil on seismic earth pressure were analyzed. The results indicated that the angle of fill slope and cohesive force of fill exert a significant influence on seismic earth pressure; under seismic loads,with the increase of horizontal seismic coefficient,active earth pressure increases and passive earth pressure decreases,respectively; if the situation of surface cracking of cohesive soil was not taken into account,the calculation results of active earth pressure are relatively small.