The internal force distribution of anti-sliding pile and slope reinforcement effect are directly affected by the stiffness ratio of pile and soil and pile position.Considering different pilesoil stiffness ratios and pile positions

numerical simulation and corresponding analysis are carried out.The results of this study are as follows.（1）The shear force has an inversed"S"-type distribution and bending moments show a convex distribution behind the pile.Shear force and bending moment are gradually increasing with the increase of stiffness ratio

showing the trend from a steep to a slow distribution.（2）When the pile position is fixed

the maximum positive and negative shear forces appear in the half and 1/4

respectively

of the height

where shear stirrups should be strengthen.Moreover

the maximum moment appears in 1/3 height of the pile

that is

the location of the sliding zone

where the configuration of bending steel should be strengthen.（3）The safety factor of the reinforced slope increases obviously

the shear force and bending moment of the pile are larger

and the plastic zone is significantly restrained when anti-sliding piles are set on the middle and two sides of the slope.It is not appropriate to set the piles in the middle of the slope in terms of technology and economy

considering that the thickness of the sliding mass is larger in the middle of the slope.Therefore

it is suggested that anti-sliding piles should be placed on both sides in the middle of the slope

so that a better reinforcement effect can be obtained.