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Introduction of inherent anisotropy into a critical-state constitutive model for sands

Reza Imam, Rouzbeh Rasouli

In the proceedings of: GEO2010 Calgary: 63rd Canadian Geotechnical Conference & 6th Canadian Permafrost Conference

Session: M3-B

ABSTRACT: A critical state constitutive model for sand was previously developed with emphasis on capturing the main aspects of the behavior of loose liquefiable sands. The model, which was presented in details in previous publications, was formulated and verified for various drained and undrained monotonic and cyclic loadings of sands. However, since in-situ soils often exhibit strong inherent anisotropy, the model was extended to predicting the behavior of such soils. In this paper, it is shown that adding a new parameter similar to that proposed by Li and Dafalias enables the model to simulate the behavior of inherently anisotropic sands.

RÉSUMÉ: Un état critique modèle constitutif pour le sable a été développé à l'accent étant mis sur la capture des principaux aspects du comportement des sables lâches liquéfiables. Le modèle, qui a été présenté en détails dans les publications antérieures, a été formulé et vérifiés pour diverses drainés et non drainés chargements monotone et cyclique des sables. Toutefois, depuis les sols in situ présentent souvent une forte anisotropie inhérente, le modèle a été étendu afin de lui permettre de prédire l'anisotropie telles. Dans cet article, il est démontré que l'ajout d'un nouveau paramètre similaire à celle proposée par Li et Dafalias permet au modèle pour simuler le comportement des sables nature anisotrope.

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Cite this article:
Reza Imam; Rouzbeh Rasouli (2010) Introduction of inherent anisotropy into a critical-state constitutive model for sands in GEO2010. Ottawa, Ontario: Canadian Geotechnical Society.

@article{GEO2010_021, author = Reza Imam; Rouzbeh Rasouli,
title = Introduction of inherent anisotropy into a critical-state constitutive model for sands,
year = 2010
}