【摘要】 采用传递系数法计算不同折减系数下滑坡推力在水平方向的分力,然后改变桩、土的弹性模量,采用有限元强度折减法计算不同安全系数下桩后土压力的合力及分布形式。结果表明:随着抗滑桩弹性模量的增大,桩后土压力合力越来越大,并逐渐接近传递系数法计算得到的滑坡水平推力;滑床土弹性模量增大,可以有效抑制桩的变形,使桩后土压力合力增大,土压力分布趋于均匀;滑体土弹性模量的增大对桩后土压力合力影响不大,但对桩身土压力的分布影响较大;随着滑带土弹性模量的增大,桩后土压力合力逐渐减小,且土压力沿桩身分布趋于均匀。更多还原

【Abstract】 To calculate landslide horizontal component of thrust under different reduction factor by transfer coefficient method,and then change modulus of elasticity of piles and soil,use finite element strength reduction method to calculate resultant force and distribution of the soil pressure behind pile.The results show that with the increase of elastic modulus of anti-slide pile,resultant force of the soil pressure behind pile becomes bigger,and gradually close to transfer coefficient method calculation results;the increase of slip bed modulus of elasticity can effectively restrain the pile deformation,which enlarge resultant force of the soil pressure behind pile and make the soil pressure distribution tend to uniform;the increase of elastic modulus of slip mass wouldn’t produce obvious influence on the resultant force of the soil pressure behind pile,but have bigger influence on the distribution of soil pressure;along with the belt soil modulus of elasticity increases,soil pressure behind pile decreased gradually,and earth pressure distribution along the pile body tends to be evenly.更多还原