Evaluation of Micropiles With Different Configuration Settings for Landslide Stabilization Based on Large-Scale Experimental Testing

Abstract

In this study, a large-scale model test was performed to investigate the effect of the single-row and double-row micropiles on the landside stabilization. For two different testing configuration settings, the bending moment along the micropiles, failure mode, and force condition were captured and compared. It is found that the landslide thrust on piles was distributed in a triangular shape. The piles in the front row carried greater pressure than the piles in the rear row. The resistance of the sliding body behind the pile was distributed in a parabolic shape, and mainly concentrated on the middle of the pile. The piles were destroyed due to the combined shearing and bending impact applied near the slipping surface. The boundary of the failure zone was from the position of two times the pile diameter under the slipping surface to the position of two and a half times the pile diameter above the slipping surface. Under the action of the landslide, each row of piles deformed at the same time. The capability of landslide stabilization for double-row piles was better than that of a single-row pile. The sections of the pile above slide surface were mainly subjected to negative bending moments and were distributed mainly within the pile length range of one-third of the anti-sliding section above the sliding surface. The pile body of the embedded section located in the range of ten times the pile diameter below the sliding surface was subjected to a positive bending moment.

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

“…In landslide control, three main methods have been adopted: Unloading by modifying the ground surface geometry, draining by constructing surface and subsurface drainage facilities (Godt et al, 2009;Chen et al, 2021a;Medina et al, 2021;Fang et al, 2023), and resisting by installing continuous or discrete retaining structures, such as walls or anti-slide piles (Hassiotis et al, 1997;Ausilio et al, 2001;Chen et al, 2020;Liu et al, 2021). Anti-slide piles offer many advantages in practical applications (Wang and Zhang, 2014;Al-Defae and Knappett, 2015).…”

New Arm-Stretching-Type Anti-Slide Pile Design and Verification

“…For the control of both artificial (i.e., cut and fill) and natural slopes, anti-slide retaining measures are often adopted. These measures mainly include retaining walls and anti-slide piles (Li et al, 2016;Li et al, 2019;Chen et al, 2020;Liu et al, 2021). A retaining wall is primarily used for the control of small, shallow landslides (Trandafir et al, 2009;Jiang and Towhata, 2013;Muraro et al, 2015), and its construction process has a significant impact on landslide stability.…”

Influence of Slope Amplification on the Pile Dynamic Behavior Based on the Data Mining Method

“…In the early 21st century alone, tens of thousands of people have been killed and billions of dollars have been lost (Huang and Li, 2009;Halder et al, 2021;and Hu H. Q et al, 2021). Therefore, utilizing reinforcement technologies to improve the stability of slopes in seismically active areas has become one of the popular research topics in the field of geological disaster prevention (Liu et al, 2021;Chen et al, 2022).…”