Contrastive Analysis of Indoor Model Test and Numerical Test on Pull-Out Failure of Fully-Embedded Anti-Slide Pile

Abstract

In this paper, the strain of steel bar, concrete of pile body, displacement of pile top and earth pressure around piles are monitored under pull-out failure mode of fully-embedded anti-slide piles, and the stress mechanism of fully-embedded anti-slide piles is studied by numerical simulation. The results show that when the anchorage depth of anti-slide piles is insufficient, the rigid rotation of piles is dominant, and the strain change of pile body is not obvious. Through the analysis of the working parameters of the anti-slide pile, it is concluded that both sides of the loading point of the anti-slide pile are subjected to an upward pulling force, which makes the anti-slide pile tend to pull out. Through the simulation analysis of the model test, it can be concluded that with the increase of load, the sliding up-welling zone behind the pile tends to expand, and the pile body is subjected to a “pull-out” effect of the surrounding sand.