Anisotropic behaviour of a sand predicted by a modified NorSand soil model

Vincent Castonguay, Jean-Marie Konrad

In the proceedings of: GeoEdmonton 2018: 71st Canadian Geotechnical Conference; 13th joint with IAH-CNC

Session: Soil Mechanics and Foundations (Numerical Analysis I)

ABSTRACT: Anisotropy of sands is easily observed through fixed principal stress direction shear tests using the hollow cylinder apparatus. The numerical modelling of such tests using an isotropic soil model would inevitably yield unsatisfactory behaviour predictions. In this study, the isotropic NorSand soil model was modified to account for soil anisotropy using the anisotropic critical state theory. This modified model was used to predict the behaviour of a Japanese clean sand (Toyoura sand) for various fixed principal stress direction shear tests. The predicted sand behaviour was satisfactory and compared favorably with laboratory results obtained by other authors. The characteristic contractive behaviour of sands loaded almost perpendicularly to their consolidation direction was well predicted by the modified anisotropic NorSand soil model.

RÉSUMÉ: s principales insatisfaisants. Pour cette étude, la loi de comportement isotrope utilisée pour prédire à direction des contraintes principales fixe. Les prédictions de comportement obtenues se comparent de manière de laboratoire

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Cite this article:
Vincent Castonguay; Jean-Marie Konrad (2018) Anisotropic behaviour of a sand predicted by a modified NorSand soil model in GEO2018. Ottawa, Ontario: Canadian Geotechnical Society.

@article{geo2018Paper289,author = Vincent Castonguay; Jean-Marie Konrad,title = Anisotropic behaviour of a sand predicted by a modified NorSand soil model,year = 2018}