Simulation of long-term consolidation behavior of soft sensitive clay using an elasto-viscoplastic constitutive model

Karim, M.R. and Oka, F. and Krabbenhoft, K. and Leroueil, S. and Kimoto, S. (2013) Simulation of long-term consolidation behavior of soft sensitive clay using an elasto-viscoplastic constitutive model. International Journal for Numerical and Analytical Methods in Geomechanics, 37 (16). pp. 2801-2824. ISSN 0363-9061

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Abstract

The phenomenon of excess pore water pressure increase or stagnation and continuing large ground deformation in soft sensitive clay following the completion of construction of embankment is simulated for a case study at Saint Alban, Quebec, Canada. The present model employs an updated Lagrangian finite element framework and is combined with an automatic time increment selection scheme. The simulation based on an elasto-viscoplastic constitutive model considers soil-structure degradation effect. It is shown that without consideration for the microstructural degradation effect, it is not possible to reproduce the field responses of soft sensitive clay even during the construction of the embankment. When the soil-structure degradation effect is considered, the present model can offer reasonably accurate prediction for the consolidation behavior of soft sensitive clay, including the so-called anomalous pore water pressure generation and continuing large deformation even after the end of construction, which has been posing numerous uncertainties on the long-term performance of earth structures.

Item Type: Article
Additional Information: 233DM Times Cited:0 Cited References Count:43
Uncontrolled Keywords: Anomalous pore water pressure, Elasto-viscoplasticity, FEMs, Long-term consolidation, Soft sensitive clay, Soil structural degradation, Time increments, Pore-water pressures, Sensitive clays, Structural degradation, Deformation, Embankments, Pore pressure, Pressure distribution, Soils, Viscoplasticity, Finite element method, clay soil, consolidation, constitutive equation, elastoplasticity, embankment, microstructure, numerical model, performance assessment, porewater, soft soil, soil structure, soil-structure interaction, time dependent behavior, Canada, Quebec [Canada]
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 03 Jan 2014 02:33
Last Modified: 03 Jan 2014 02:33
URI: http://eprints.um.edu.my/id/eprint/8785

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