锚索抗滑桩在边坡治理工程中的应用

Application of Anchor Cable Anti-slide Pile in Slope Treatment Engineering

为了优选合理的锚索抗滑桩施工方案,文中依托某路堑边坡项目,建立锚索抗滑桩的仿真模型,利用MIDAS软件模拟分析预应力锚索抗滑桩的稳定性及力学变形特性。结果表明,未设置支护的边坡工程稳定性系数为1.03,边坡稳定性系数随着抗滑桩截面尺寸的增加以及预应力的增加而逐渐增加;随着桩深的增加,抗滑桩的水平位移初期不断增加,工况3条件下抗滑桩的桩底水平位移最低,即工况3支护方案的边坡抗变形能力最强。随着桩深的增加,抗滑桩的剪力表现为先负向降低、后正向增加、后降低、再次反向增加的变化规律,抗滑桩的弯矩表现为先降低、后增加、再降低的变化规律。

In order to optimize the reasonable construction scheme of anchor cable anti-slide pile,a simulation model of anchor cable anti-slide pile was established based on a cutting slope project.MIDAS software was used to simulate and analyze the stability and mechanical de-formation characteristics of prestressed anchor cable anti-slide pile.The results show that the engineering stability coefficient of slope without support is 1.03,and the stability coefficient of slope increases gradually with the increase of section size and prestress of anti-slide pile.With the increase of pile height,the horizontal displacement of anti-slide pile increases at the initial stage,and the horizontal displacement of anti-slide pile under the condition of working condition 3 is the lowest,that is,the slope deformation resistance of the supporting scheme under working condition 3 is the strongest.With the increase of pile body,the shear force of anti-slide pile shows the change law of negative decrea-sing at first,positive increasing,decreasing and then reverse increasing again.The bending moment of anti-slide pile shows the change law of first decreasing,then increasing and then decreasing.