Analysis of Reinforced Soil Slopes with Limit Equilibrium and Finite Element Methods

Reinforcing elements such as geotextiles or geogrids are widely used in retaining walls, slopes and embankments since they provide an economical and practical solution. A reinforced wall transitions into a slope as the slope angle with the horizontal decreases. Therefore, the design methodology transitions from lateral earth pressure theory to slope stability analyses. For slope stability problems both limit equilibrium and finite element methods are being used widely. In limit equilibrium solutions, the resisting force of the reinforcing elements can be considered in the equation of the factor of safety in several different ways. In finite element solutions, however, reinforcing elements have to be defined as some structural elements with certain stiffness. This study will focus on the two dimensional finite element and limit equilibrium analyses of reinforced slopes. A parametric study is presented for the comparison of the results obtained by limit equilibrium method and finite element method. The localization of shear strains and location of failure surfaces are investigated. The effect of vertical spacing of geogrids, cohesion of soil, friction angle of the soil, tensile capacity of geogrids, and length of geogrids on the factor of safety of the slopes are evaluated. The results of this study can be useful for better understanding the behavior, the possible failure modes and optimum design of reinforced soil slopes.
10th International Conference on Geosynthetics (10ICG), 21 - 24 Eylül 2014


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Citation Formats
G. Özçelik, Ö. Paşaoğlu, and N. Huvaj Sarıhan, “Analysis of Reinforced Soil Slopes with Limit Equilibrium and Finite Element Methods,” Berlin, Almanya, 2014, vol. 1, p. 1, Accessed: 00, 2021. [Online]. Available: