Application of the random material point method to 3D slope failures.
Guido Remmerswaal1,2, Philip J Vardon1, Michael A Hicks1
1Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, The Netherlands.
Acta Geotechnica
|June 12, 2025
Summary
Three-dimensional slope stability analysis reveals that 3D failures spread wider than 2D, offering greater resistance. Introducing material strength trends with depth causes flow-like failures, expanding the failure zone.
Area of Science:
- Geotechnical Engineering
- Computational Mechanics
- Earthquake Engineering
Background:
- Slope stability is crucial for infrastructure safety.
- Understanding failure mechanisms is essential for risk assessment.
- Numerical methods enhance the analysis of complex geotechnical problems.
Purpose of the Study:
- To investigate the 3D and spatial variability effects on slope failure processes.
- To compare 3D and 2D slope stability simulations.
- To analyze the impact of material strength profiles on failure mechanisms.
Main Methods:
- Utilized the random material point method (RMPM) for slope stability analysis.
- Simulated a 45-degree idealised slope under self-weight and surface loading.
- Investigated heterogeneous material strength profiles, including depth trends.
Main Results:
- 3D failures exhibited sideways and backward spreading, with higher resistance than 2D failures.
- Material strength depth trends induced flow-like failure processes.
- Flow-like failures expanded the failure zone, circumventing strong material zones.
Conclusions:
- 3D effects enhance slope stability compared to 2D analyses.
- Spatial variability, particularly depth trends in material strength, significantly alters failure modes.
- RMPM is effective for simulating complex 3D slope failure behaviors.
Keywords:
Large deformationsRandom material point method (RMPM)Sensitive claysThree-dimensional (3D) slope failureMore Related Videos
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