Numerical analysis for slopes stability evaluation. Comparative study

Currently, slope stability is assessed either theoretically, using various calculations methods, or practically, by directly monitoring ground deformations. The modelling of geotechnical structures, particularly slopes, through computational programs has advanced significantly over the past decades. These programmes are based on two main methods: limit equilibrium ore finite element methods. In Romania some of the most commonly used software for slope stability include: Geo5, Geostru, Geo-slope, MidasGTX, Midas Soil Works, Plaxis 2D and 3D, Phase 2, Abaqus, and Cosmos. Globally, more than 50 programs are available for such analyses. The study presented in this paper examines the influence of shear strength mobilization in slopes stability by conducting a comparative assessment of different slope configurations. The analysis is performed for homogeneous soil mases but also for stratified soils. The results showed that the finite element method, as a numerical analysis approach enables the modelling of complex earth structures composed of soils with different physical and mechanical characteristics. Moreover, its detailed graphical representation helps identify critical areas of interest, while finite element discretization provides precise results at key points.