组合支护形式下的边坡位移和剪切应变分析

Analysis of Slope Displacement and Shear Strain under Combined Support

抗滑桩、挡土墙和喷混凝土的组合支护形式在边坡工程中应用较多,结合一实际边坡工程,采用抗滑桩、挡土墙和喷混凝土的组合支护形式,从位移和剪切应变两个方面对组合支护形式进行研究,研究结果表明:(1)边坡岩土体的水平位移和整体位移均不超过20 mm,说明支护作用下边坡的位移是控制在合理的范围内;(2)边坡的剪应力区域没有贯通,安全系数超过1.20,由此可知支护措施是达到了支护的效果;(3)潜在滑动面并没有完全穿过抗滑桩,建议可适当增加抗滑桩的高度,充分发挥抗滑桩的抗滑效果。以上的研究可供类似的边坡治理提供参考。

The combination of anti-slide pile,retaining wall and shotcrete is widely used in slope engineering. In this paper,combined with a practical slope project,the combination of anti-slide pile,retaining wall and shotcrete is adopted,the results show that:(1)the horizontal displacement and the overall displacement of the rock-soil mass are not more than 20 mm;The results show that the displacement of the slope is controlled within a reasonable range;(2)the shear stress area of the slope is not penetrated and the Factor of safety is over 1.2,so the supporting measures are effective;(3)the potential slide surface does not pass through the anti-slide pile completely,so it is suggested that the height of the anti-slide pile should be increased to give full play to the anti-slide effect of the anti-slide pile. The above research can provide reference for similar slope treatment.