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Comparisons of Predicted and Observed Failure Mechanisms in Model Reinforced Soil Walls

1996; Volume: 3; Issue: 3 Linguagem: Inglês

10.1680/gein.3.0065

1751-7613

Ennio M. Palmeira, Romero César Gomes,

Landfill Environmental Impact Studies

This paper presents comparisons of predicted stability analyses to measured and observed results of model reinforced soil walls using theoretical design methods. The model walls were failed under a footing surcharge at different locations on the fill surface. These surcharges were compared to results that were predicted using the rigid wall approach for the reinforced soil mass, plane and circular failure surfaces and the two-wedge failure mechanism analyses. The latter method provided the best predictions in terms of surcharge values at failure and failure surfaces. The results also suggest that theoretical design methods that are not capable of accurately predicting the failure surface can severely overestimate the failure loads when the surcharge is the dominant factor for wall instability.