Reliability Assessment of Slope Stability With Stepwise Increase in Slope Complexity
- DOI
- 10.2991/978-94-6463-900-1_17How to use a DOI?
- Keywords
- optimization; search technique; probability of failure; complex geometry
- Abstract
The reliability of optimization search techniques in assessing the probability of failure of a slope, as slope complexity increases, is investigated in this paper. Initially, a simple homogeneous slope (1) is introduced, and the probability of failure (Pf) is determined using five non-circular optimization techniques (aided by local surface altering optimization): Path, Auto refine, Cuckoo, Simulated annealing and Particle swarm search. Subsequently, the slope complexity is increased stepwise as follows: (2) a retaining wall is placed at the toe of the slope; (3) a distributed load is placed at the top of the slope; (4) anchors are added to the face of the slope; (5) weak, unfavourably oriented anisotropic planes are introduced using an anisotropic linear model with a constant value of shear strength; (6) variability in the shear strength of anisotropic planes is introduced in the final step. For each of these steps, Pf is determined using different search techniques. Results indicate that the probability of failure remains practically the same (for different optimization techniques) for the first four cases considered, while differences emerge when material anisotropy is introduced. The disparity in results becomes more pronounced when the variable shear strength of anisotropic planes is considered. Key findings suggest that for the probabilistic assessment of slope stability in complex geometries, at least three global search techniques with local refinement should be employed, guided by engineering judgment to ensure informed decision-making.
- Copyright
- © 2025 The Author(s)
- Open Access
- Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.
Cite this article
TY - CONF AU - Zoran Berisavljević PY - 2025 DA - 2025/12/07 TI - Reliability Assessment of Slope Stability With Stepwise Increase in Slope Complexity BT - Proceedings of the Rocscience International Conference 2025 (RIC 2025) PB - Atlantis Press SP - 178 EP - 187 SN - 2589-4943 UR - https://doi.org/10.2991/978-94-6463-900-1_17 DO - 10.2991/978-94-6463-900-1_17 ID - Berisavljević2025 ER -