Constitutive elasto-plastic model for fine soils in the unsaturated to saturated saturation zone. (July 2019)

• Record Type: Journal Article
• Authors: Fabbri, A.; Wong, H.K.K.; Lai, B.; Bui, T.A.; Branque, D.
• Is Part Of: Computers and geotechnics. Volume 111(2019)
• Page Start: 10
• Page End: 21
• Publication Date: 2019-07
• Subjects: Quasi-saturated soils -- Poro-elasto-plasticity -- Entrapped air in porous media; Engineering geology -- Data processing -- Periodicals; Soil mechanics -- Data processing -- Periodicals; Rock mechanics -- Data processing -- Periodicals; 624.1510285
• DOI: 10.1016/j.compgeo.2019.03.001
• Languages: English
• ISSNs: 0266-352X

Abstract

Abstract: Near saturation, air bubbles and pockets can be trapped in the porous network of soils. The aim of this paper was to present a coupled model that takes into account the effect of this entrapped air on the poro-elasto-plastic behavior of the soil. The model takes into account the physical-mechanical interactions between different phases as well as the kinematics of each constituent (liquid water, dissolved air, gaseous air and solid grains). This new model was implemented in a FEM code. Some numerical simulations were performed to demonstrate its ability to reproduce a continuous transition of unsaturated to saturated states.