Effect of Pile-Soil Stiffness Ratio and Pile Distribution on Pile Internal Force Distribution

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 forc