Remarks on Constitutive Modeling of Unsaturated Soils
Publication: Characterization, Modeling, and Performance of Geomaterials: Selected Papers From the 2009 GeoHunan International Conference
Abstract
More and more attention has been paid to account for the effects of hydraulic behavior including hydraulic hysteresis on the stress-strain behavior of unsaturated soils. Current trend is to have two elasto-plastic models for unsaturated soils, one is for the modeling of the mechanical behavior of the soil and the other is for the modeling of hydraulic behavior of the soil. However, few researchers have considered the consistency between these two models. In many existing constitutive models, main drying and wetting curves were assumed to be unique functions between degree of saturation and matric suction for the description of hydraulic hysteresis, in which the degree of saturation is a function of matric suction. In this paper, the Barcelona Basic Model (BBM) is selected to discuss problems associated with such an adoption.
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© 2009 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Constitutive relations
- Engineering fundamentals
- Flow (fluid dynamics)
- Fluid dynamics
- Fluid mechanics
- Geomechanics
- Geotechnical engineering
- Hydraulic models
- Hydrologic engineering
- Hysteresis
- Materials characterization
- Materials engineering
- Mathematics
- Models (by type)
- Rheology
- Soil mechanics
- Soil properties
- Soil stress
- Soils (by type)
- Stress (by type)
- Stress strain relations
- Structural analysis
- Structural engineering
- Suction
- Unsaturated soils
- Water and water resources
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