摘要
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。
Sheet- pile wall was a kind of retaining structure which evolved from anti- slide pile and retained the advantages of anti- slide pile in landslide treatment. When sheet- pile wall was set in the landslide leading edge,the back wall fills provided the back pressure and enhanced the sliding resistance of slope toe. To evaluate the effect of sheet- pile wall treatment of landslide,and improve the landslide stability,we used Plaxis 2D finite element analysis program to analyze three working conditions which included the natural state,only the anti- slide pile and sheet- pile wall,and the results showed： Under sheet- pile wall condition,landslide stability had been significantly improved and increased respectively about 66% and 38% than that in natural state and only under circumstances of anti- slide pile; The earth filled in the back of the sheet- pile wall formed the pressure against the landslide,and reduced the lateral displacement range for both sliding body and sliding bed. At the same time,the application of sheet- pile wall improved the stabilizing force in the lower section of sliding soil,and reduced the plastic point range for soil in landslide zone.
出处
《环保科技》
2016年第1期19-23,共5页
Environmental Protection and Technology
