Stability analysis of reinforced multi-stage loess high slope based on limit equilibrium method and finite element methods

doi:10.13295/j.cnki.issn1673-5196.2026.04.015

Abstract

Abstract: To investigate the differences among the Limit Equilibrium Method (LEM), the Finite Element Method (FEM), and the Finite Element Limit Analysis Method (FELAM) in slope stability assessment, a remediation project of a multitiered high loess fill slope reinforced with a combined system of geogrids and frame anchor cables is taken as an example, and corresponding models are established using three numerical simulation software packages: SLOPE/W, PLAXIS 2D, and Optum G2. On the basis of validating the numerical models, a comparative analysis is carried out on the stability of unreinforced slopes, geogrid-reinforced slopes, and slopes reinforced with a combination of geogrids and frame anchor cables under self-weight conditions and rainfall conditions. The results show that the stability assessments obtained from LEM and FELAM are more consistent with each other, whereas the FEM-based results are more conservative than those from both LEM and FELAM. For slope stability evaluation and reinforcement design, a comprehensive analysis integrating multiple methods yields more thorough and reliable assessment outcomes.

Key words: loess, mult-stage high slope, stability, limit equilibrium method, finite element method, finite element limit analysis method

CLC Number:

TU476

TENG Hong-wei, ZHANG Guo-hua, WANG Hong-wei, YANG Xiao-hui, HUANG An-ping. Stability analysis of reinforced multi-stage loess high slope based on limit equilibrium method and finite element methods[J]. Journal of Lanzhou University of Technology, 2026, 52(4): 130-137.

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URL: https://journal.lut.edu.cn/EN/10.13295/j.cnki.issn1673-5196.2026.04.015

https://journal.lut.edu.cn/EN/Y2026/V52/I4/130

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