Study on the influence parameters of anti-sliding round pile based on pile-soil interaction

Abstract

Anti-slide piles are widely used as a support measure to improve slope stability. The reasonable selection of anti-slide pile parameters is crucial for enhancing slope stability and reducing costs. A small landslide in Ganluo County is taken as the research object and FLAC^3D numerical analysis software is used to investigate the effects of pile diameter and pile spacing on pile-soil interaction. It is analyzed how these two parameters influence the deformation of circular anti-slide piles and their reinforcement effects on landslides. The results indicate that as the pile spacing increases, the landslide thrust, front resistance of the pile, pile displacement, maximum slope displacement, and internal force within the pile all gradually increase. Meanwhile, the stability of the landslide reinforced with circular anti-slide piles decreases with increasing pile spacing. To ensure effective pile-soil interaction, the pile spacing should not exceed 6.25 m.Furthermore, as the pile diameter increases, the landslide thrust, front resistance of the pile, pile displacement, and maximum slope displacement gradually decrease. After reinforcement with circular anti-slide piles, the landslide stability and internal force within the pile increase with the pile diameter. The pile diameter should be no less than 1 m, with an optimal maximum diameter of 1.5 m.

Keywords

Anti-slide pile / Landslide control / Numerical simulation / Pile spacing / Pile diameter / Pile-soil interaction