文中以某边坡支护工程为例,通过有限元软件PLAXIS建立支护桩模型,分析抗滑桩桩长及直径对高边坡力学特性及变形的影响.结果表明,随着桩长增加,边坡稳定性安全系数先增加后稳定;随着桩径的增加,惯性矩、混凝土用量、边坡稳定性安全系数均不断增大;桩径每增加1m,边坡惯性矩增加0.458 m4;边坡混凝土用量增加14 m3/m,边坡稳定性安全系数增加 0.042.综合考虑,确定最佳抗滑桩桩长为30 m,抗滑桩桩直径为1.6 m.
Analysis of the Effect of Anti-slide Pile in the Support of Multi-layer Slime Sandwich Slope Based on PLAXIS
Taking a slope support project as an example,the support pile model was established by finite element software PLAXIS,and the influence of anti-slide pile length and diameter on mechanical properties and deformation of high slope was analyzed.The results show that with the increase of pile length,the safety factor of slope stability first increases and then becomes stable.With the increase of pile diameter,the moment of inertia,the amount of concrete and the safety factor of slope stability increase continuously.When pile diameter increases by 1 m,the inertia moment of slope increases by 0.458 m4.When the amount of slope concrete increases by 14 m3/m,the safety factor of slope stabili-ty increases by0.042.After comprehensive consideration,it is determined that the best anti-slide pile length is 30 m and the diameter of anti-slide pile is 1.6 m.
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