Abstract
In this study, the mechanical behavior of two-tier Geosynthetic-Reinforced Soil walls is investigated numerically by using the concept of two-phase systems. Comparison of the results of this approach with those of discrete numerical models and centrifuge tests indicates that the approach has the ability to consider the interaction between tiers, predict the reinforcement load and wall-face displacement. Furthermore, it is more cost-effective. The limitations of this approach pertain to the prediction of the failure surface and the wall deformation regime. Totally, the two-phase approach can be properly applied in a fast, effective and safe manner.
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