Analysis of Factors Affecting Slope Stability Based on the Finite Element Strength Reduction Method

This study employs the finite element strength reduction method and ABAQUS software to conduct numerical investigations on the stability of two-dimensional homogeneous soil slopes and their influencing factors. The reliability of the computational model is validated by comparing results with those from the traditional limit equilibrium method. Using the control variable method, the effects of internal friction angle, cohesion, unit weight, elastic modulus, and Poisson's ratio on the slope safety factor are systematically examined. Results indicate that cohesion and internal friction angle exert the most significant influence on slope stability, both exhibiting positive correlations with the safety factor. Soil unit weight moderately affects stability, with the safety factor decreasing as it increases. Elastic modulus and Poisson's ratio have negligible effects on the safety factor. These findings provide theoretical reference for slope engineering stability assessments.