Article Dans Une Revue Engineering Structures Année : 2021

Geosynthetic-reinforced pile-supported embankments − 3D discrete numerical analyses of the interaction and mobilization mechanisms

Résumé

This study aims to investigate several fundamental aspects related to the behavior of geosynthetic-reinforced pile-supported embankments. Three-dimensional numerical analyses using the discrete element method are conducted to consider the soil-structure under these systems. The contributions of the soil arching, tensioned membrane effect, friction interaction, subsoil support, and punching failure are investigated. The results indicated that the inclusion of the geosynthetic enhances the stress transfer from the subsoil to piles due to the geosynthetic tensioned membrane action. The tension distribution in geosynthetic is uniformly distributed and the maximum tension occurs near the pile edge. Numerical results also proved that the subsoil provides a substantial support and reduces the reinforcement tension while shear stresses are mobilized along the upper and lower sides of soil-geosynthetic interfaces. This mechanism should be considered in theoretical models. Finally, the comparison showed that the results obtained from the methods of design guideline CUR226 and design standard EBGEO agree well with the numerical results, and are generally better than the results of all other methods.

Dates et versions

hal-04819637 , version 1 (04-12-2024)

Identifiants

Citer

Tuan Pham, Quoc-Anh Tran, Pascal Villard, Daniel Dias. Geosynthetic-reinforced pile-supported embankments − 3D discrete numerical analyses of the interaction and mobilization mechanisms. Engineering Structures, 2021, 242, pp.112337. ⟨10.1016/j.engstruct.2021.112337⟩. ⟨hal-04819637⟩

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