Analysis of Landslide Displacement and Stress under the Condition of Overturning Failure of Fully Buried Anti-slide Piles

Abstract

In this paper, on the basis of proving the basic consistency between numerical experiments and on-site physical experiments, a three-dimensional model of push pile FLAC3D was established. Based on relevant engineering analogies, parameters were selected to simulate and analyze the overturning failure mechanism of fully buried anti-slide piles. The research results indicate that the displacement of sand filling in front of the pile is significantly smaller than that of sand filling behind the pile. When approaching the failure load, a large area of uplift phenomenon appears at the top of the sliding body behind the pile; Most of the sand filling above the sliding surface showed a positive displacement along the x-axis, and the maximum displacement occurred at the top of the bulldozer. As the load increases, the sliding and upwelling area behind the pile tends to expand, and the vertical displacement at each point increases to a certain extent. At this time, the pile body is subjected to a "pull-out" effect from the surrounding sand.