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桩板墙作为抗滑桩演变而来的一种支挡结构,其保留了抗滑桩在滑坡治理中的优点。桩板墙设置于滑坡前缘时,可形成对坡的反压固脚的作用。为评价桩板墙治理滑坡的效果、对滑坡稳定性的提高程度,采用Plaxis 2D有限元分析程序,对自然状态下、仅使用抗滑桩及桩板墙支挡3种工况下滑坡稳定性进行了分析评价,结果表明:经桩板墙处理后,滑坡稳定性有明显提高,较自然状态、仅使用抗滑桩情况下,分别提高了约20%、38%;桩板墙后填土对滑坡前缘形成的反压作用,减小了滑体及滑床侧向位移范围,同时,提高了中下段滑带土的抗滑力,减小了该区域滑带土塑性点范围。
As a kind of retaining structure evolved from anti-slide piles, the pile wall retains the advantages of anti-slide piles in landslide control. When the pile wall is set on the front of the landslide, it can form the function of the counter-pressure fixing foot of the slope. In order to evaluate the effect of the pile wall to control the landslide and to improve the stability of the landslide, Plaxis 2D finite element analysis program was used to analyze the stability of the landslide under the condition of natural condition, using only anti-slide piles and pile wall support The results show that the stability of the landslide obviously increases after the treatment of the pile wall. Compared with the natural state, the stability of the landslide is improved by about 20% and 38% The anti-pressure action formed on the front edge of the landslide reduces the lateral displacement range of the sliding body and the sliding bed, meanwhile, improves the anti-slip force of the sliding zone soil in the middle and lower sections and reduces the plastic point range of the sliding zone in the zone.