Author(s): Sara Al-Hameed

Abstract: The stability of earth slopes is a critical concern in geotechnical engineering, particularly in infrastructure projects exposed to varying hydraulic and seismic conditions. This study investigates slope stability using advanced finite element modeling techniques with a strength reduction method (Strength Reduction Method (SRM)), offering a more realistic evaluation of slope behavior than traditional limit equilibrium methods (LEM). A series of numerical simulations were conducted under different groundwater levels, seismic loading intensities, and soil strength parameters to evaluate their influence on the factor of safety, failure mechanisms, and deformation patterns. The results indicated that Strength Reduction Method (SRM) produced consistently lower and more conservative safety factors compared to LEM, reflecting its ability to capture progressive failure and stress redistribution. Parametric analyses showed the strong influence of internal friction angle and cohesion on stability outcomes, while mesh sensitivity studies ensured numerical accuracy with optimal computational efficiency. Vertical displacement profiles revealed the development of plastic zones near mid-slope, indicative of progressive shear band formation. Probabilistic analyses further showed that increasing variability in soil strength properties significantly increased the probability of failure, underscoring the role of uncertainty in stability assessments. The study concludes that Finite Element Method (FEM)-Strength Reduction Method (SRM) offers a robust framework for slope stability evaluation, particularly for complex geometries and adverse environmental conditions. It recommends integrating probabilistic methods, site-specific investigations, and careful mesh optimization to improve design reliability and inform sustainable slope stabilization strategies.

Pages: 18-22 | Views: 32 | Downloads: 19

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