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Abstract

To study the effect of reinforcing slopes with inclined piles under the action of overload at the slope top, this paper adopted Flac3D to build a numerical analysis model, with the interaction between piles and soil considered. Meanwhile, based on the strength reduction method, it explored the influence of the pile inclination and position on slope stability, and compared and analyzed the differences in horizontal displacement and bending moment changes between inclined piles and vertical piles under overload at the slope top. The results indicate that as the inclination of the "negative inclination" anti-slide pile increases, the slope's safety factor rises, while the horizontal displacement and bending moment decrease. The variation rules of horizontal displacement and bending moment of the "negative inclination" anti-slide pile with the pile depth are consistent with those of the vertical pile. The horizontal displacement decreases with the increasing depth and increases with the rising overload at the slope top, with the maximum growth rate at the pile top. The bending moment of the pile increases first and then decreases along the pile length, with the maximum bending moment occurring around 0.58L (L is pile length). In practical engineering, the anti-slide piles can be set as a "negative inclination" slope to enhance bending resistance, and the effect of setting the pile in the upper part of the slope is better.

Publication Date

1-18-2024

DOI

10.14048/j.issn.1671-2579.2023.06.003

First Page

15

Last Page

20

Submission Date

March 2025

Reference

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