Evaluation of design methods for geosynthetic-reinforced pile-supported embankments based on case studies
Evaluation of design methods for geosynthetic-reinforced pile-supported embankments based on case studies
This paper evaluates the performance of several empirical geosynthetic-reinforced pile-supported (GRPS) embankment design methods, which include the BS8006, Nordic, EBGEO, FHWA, and CUR226 methods. Assessment of these GRPS design methods was performed using three field case studies using four criteria: the efficacy, stress concentration ratio, maximum differential settlement, and maximum reinforcement. The results show that the performance of GRPS design methods varies from case to case and depends on the criterion considered. For efficacy criterion, the field measurements are closer to Nordic and EBGEO than the other methods. For SCR criterion, the field measurements are closer to BS8006 than the other methods, and to finite element models (FEM) in two cases. However, for the maximum tension and differential settlements criteria, the field measurements are much closer to CUR226, EBGEO, and FEMs.