Analysis of the Effect and Mechanism of Anti-Slide Piles in Strengthening Slopes with Different Gradients
For slopes with varying gradients,this work conducted strength reduction finite element analysis on the stability of slopes before and after the application of anti-slide pile reinforcement using the software ABAQUS.Considering the safety factor of the slope and the bending moment of the pile,the optimal pile position for different gradients was discussed.Additionally,with the aid of incremental displacement diagrams,the impact of different pile lengths,spacing,and cross-sectional dimensions on slope stability at the optimal pile position was analyzed.Results indicate a significant correlation between slope gradient and the optimal pile position,which tends to shift toward the slope center as the gradient increases.Specifically,for a gradient of 1∶2,the optimal pile position is at Lx/L=0.8;for gradients of 1∶1 and 2∶1,it is at Lx/L=0.6.The safety factors for gradients of 1∶2,1∶1 and 2∶1 are 1.581,1.171 and 0.980,respectively,which are about 10%,17%and 40%higher than those without piles,and the increase displays a gradually increasing trend.It shows that the larger the gradient,the better the reinforcement effect of anti-slide piles.The safety factor initially rises with an increase in pile length and later stabilizes,with this stabilization occurring faster at steeper gradients.As pile spacing increases,the safety factor reduces,with this reduction being more pronounced at steeper gradients.As the pile cross-sectional dimension grows,the safety factor first rises then levels off,and this leveling off occurs sooner with steeper gradients.
anti-slide pilestrength reductionsafety factorpile bending momentoptimal pile position
万方数据
维普
