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Remarks on Constitutive Modeling of Unsaturated Soils
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.
Remarks on Constitutive Modeling of Unsaturated Soils
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.
Remarks on Constitutive Modeling of Unsaturated Soils
Zhang, Xiong (author) / Chen, Liangbiao (author) / Li, Lin (author)
GeoHunan International Conference 2009 ; 2009 ; Changsha, Hunan, China
2009-07-13
Conference paper
Electronic Resource
English
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