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A Bounding Surface Plasticity Model for Unsaturated Soils Accounting for the Void Ratio Dependency of the Water Retention Curve

H. Moghaddasi, G. Alipour Esgandani, A. Khoshghalb, B. Shahbodagh-Khan, N. Khalili

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

The paper presents an advanced plasticity formulation for modelling partially saturated geomaterials based on the effective stress principle. The bounding surface plasticity framework is adopted for development of the proposed model. The bounding surface is assumed to undergo isotropic hardening due to increase in the volumetric strain and suction. A unique feature of the presented model is explicit incorporation of the influence of the soil density on the soil water retention curve and analytically correlating this dependency to the effective stress parameter without introducing additional material parameters. To validate the presented model, several experimental data including constant suction and wetting tests are simulated and the capability of the model to predict the experimental results is discussed.

Original languageEnglish
Title of host publicationPoromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics
EditorsPatrick Dangla, Jean-Michel Pereira, Siavash Ghabezloo, Matthieu Vandamme
PublisherAmerican Society of Civil Engineers (ASCE)
Pages1061-1068
Number of pages8
ISBN (Electronic)9780784480779
DOIs
Publication statusPublished - 6 Jul 2017
Event6th Biot Conference on Poromechanics, Poromechanics 2017 - Paris, France
Duration: 9 Jul 201713 Jul 2017

Publication series

NamePoromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics

Conference

Conference6th Biot Conference on Poromechanics, Poromechanics 2017
Country/TerritoryFrance
CityParis
Period9/07/1713/07/17

Keywords

  • plasticity model
  • retaining structures
  • saturated soils
  • unsaturated soils
  • soil stress
  • soil water
  • bounding surface plasticity model

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