Deformation analysis of reinforced soil retaining walls—simplistic versus sophisticated finite element analyses |
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Authors: | Hoe I Ling Huabei Liu |
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Institution: | (1) Department of Civil Engineering and Engineering Mechanics, Columbia University, 500 West 120th Street, New York, NY 10027, USA;(2) Department of Civil Engineering, City College of New York, Steinmann Hall, Convent Ave. @ 140th Street, New York, NY 10031, USA |
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Abstract: | Over the last two decades, different kinds of modular block have been increasingly used in the geogrid-reinforced soil retaining
walls. The simulation of such wall behavior, which involves interactions between different structural components and backfill
soils, requires a rigorous numerical procedure. Finite element is usually a preferred method, but this procedure, especially
the soil constitutive models, is of different degrees of sophistication. It is always an issue of how simple or sophisticated
should an analysis be conducted in replicating the actual behavior. In this article, a full-scale test wall was used to validate
simplistic and sophisticated finite element analyses. Different types of finite element and material models were used in the
two kinds of analysis to differentiate the level of simplicity or sophistication. The results obtained from stress-deformation
analyses are presented and compared. It is shown that for wall construction that involves static loading conditions, simplistic
nonlinear elastic and sophisticated elastoplastic analyses produced close and acceptable results. |
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