沉埋式双排抗滑桩受力及沉埋深度有限元分析

基于堆积体滑坡中双排抗滑桩，采用二维PLAXIS程序建立有限元模型，分析前、后排桩的受力及滑体内塑性区发展随沉埋深度的变化规律。结果表明:当后排桩沉埋比例ζ＜0.4时，既可充分利用桩顶土体自身强度，减少桩长、降低桩身内力、减少桩的配筋量及混凝土用量，又能保证桩顶滑坡体稳定。

Analysis on Stress and Burying Depth of Double-row Deeply Buried Anti-slide Piles by FEM

In relation to the double-row anti-slide piles in talus landslide，a finite element model was established by two-dimensional PLAXIS program to analyze the stresses of the piles both at the front and rear rows，as well as the law of the plastic zone in the landslide body developing with the burying depth.The result shows that when the burying proportion of the rear pile row ζ 0.4，not only the own strength of the soil on the top of the piles may be used to reduce the pile length，stress inside the pile，amount of reinforcing steel and concrete consumption，but also the stability of the landslide on the top of the piles may be guaranteed.