Anti-slide pile structure development: New design concept and novel structure

Abstract

The anti-slide pile is one of the most used measures in landslide control globally. Following its application, various structures have been developed. In this paper, we analyze the anti-slide pile structure development process and extract two development paths. One path is aimed at improving the applicability. The second path starts from an in-depth study of pile–soil interactions. However, these two paths share a single design concept: The anti-slide pile provides direct resistance to maintain landslide stability, that is, the anti-slide pile and the landslide body are thought to be confrontational sides. We here propose developing and utilizing the landslide body in anti-slide pile design. Accordingly, the confrontation relationship between the anti-slide pile and the landslide body can be changed while shifting away from the view that the landslide body is only a hazard. On this basis, we also design a novel structure: An arm-stretching-type anti-slide pile. The simulation verification results show that this novel structure works well in realizing the proposed design concept. Compared with the commonly used wholly buried pile, the safety factor of the landslide controlled by the novel structure is improved by 43.56%. This study promotes the design concept of anti-slide pile developing from the existing slide–resist single mode to the slide–self-stabilize–resist compound mode.

Fracture Disaster Assessment of Model Concrete Piles in Loess Slope Engineering under Non-Uniform Lateral Loading

“…The rapid expansion of global infrastructure has led to an increase in slope engineering projects, where anti-slide piles have emerged as a primary solution for slope reinforcement [1,2]. The paramount issue at present is the assurance of slope stability and safety when supported by such piles [3,4], rendering the investigation of the force, deformation, and damage characteristics of stabilizing piles in reinforced slopes of profound theoretical and practical importance.…”

Analysis of Influence Factors of Anti-Slide Pile with Prestressed Anchor Cable Based on Bearing and Deformation Characteristics of Pile Body

“…Due to the hydraulic effect of expansive soil and the attenuation of soil shear strength in the sliding zone, slope failure often occurs in unpredictable locations, and landslide complexes may cause large-scale damage [1][2][3]. In order to prevent the sliding failure of the slope, sometimes it is necessary to take reinforcement measures for some special road sections, but unreasonable support methods not only cannot guarantee the safety of the slope, but may even cause greater economic losses and casualties [4][5][6][7][8]. Therefore, it is very important to select reasonable support methods and design parameters to ensure the safety of slope reinforcement engineering and reduce the investment of engineering construction.…”