摘要
基于FLAC3D软件对抗滑桩加固滑坡进行数值模拟分析,从位移场、应力场。塑性区分布三个方面对滑坡支护前后效果进行分析,得出以下结论:边坡主要以压应力为主,但主应力方向基本上与边坡表面平行,因此对边坡的稳定性不利,但抗滑桩改变了周围的应力状态,对于改善边坡内部的应力状态也具有很好的效果。塑性区大部分为剪切塑性屈服,处于岩土分界面以上,且有所贯通,表明边坡内部土体的在自重的作用下发生了剪切屈服,抗滑桩可以隔断塑性区的贯通,有利于边坡稳定。
A numerical model was set up to simulate vertical piles for slope stability using FLAC3 D.The effectiveness of the vertical piles to stabilize slope failure was assessed by deformation,stress,and plastic zone distribution.The simulation indicates that compressive stress is generally developed in the slope with principal stress generally parallel to the slope which results in driving force.The inclusion of vertical piles in the slope alters the stress condition and improves slope stability.Generally connected plastic zones are mainly the result of shear failure right above the soil-rock interface.Vertical piles socketed in rock improve the slope stability by interrupting the connectivity of the plastic zones.
出处
《土工基础》
2015年第3期88-91,共4页
Soil Engineering and Foundation
关键词
抗滑桩
数值模拟
位移
应力
塑性区
Vertical Piles
Numerical Analysis
Displacement
Stress
Plastic Zone
