A study on the efficiency of the hardening soil model for soft clay

Saeed Kharaghani, HamidReza Bolouri Bazaz, Rivard Ali, Akhtarpour

In the proceedings of: GeoEdmonton 2018: 71st Canadian Geotechnical Conference; 13th joint with IAH-CNC

Session: Posters - Geotechnical

ABSTRACT: The stress resistant and deformation characteristics of fine-grained soils, especially soft clays are remarkably influenced by the soil softness. Therefore, it is important to utilize a model which can simulate the effects of this phenomenon accurately. A constitutive model must be able to balance among the number of parameters such as the process of parameters determination and the simplicity of the computational calculations. In the present research, the performance of the hardening model for soft soils is investigated. The main advantage of utilizing this model is reproduction of nonlinear behavior via mobilized shear strength and mobilized dilation parameters. The model has been calibrated by incorporating soft Bangkok clay data which have been derived from a CD triaxial test performed by previous researches. Due to extensive deformations of the soft clay, a function has been introduced in the calibration process to fit the model with the test data. For common engineering practices, where the problem is mainly solved by applying the shear stress, employing the mentioned function, leads to acceptable results. Résume Les caractéristiques de résistance aux contraintes et de déformation des sols à grains fins, en particulier les argiles molles, sont grandement inles effets de ce phénomène avec précision. Un modèle constitutif doit être capable d'équilibrer le nombre de paramètres tels que le processus de détermination des paramètres et la simplicité des calculs informatiques. Dans la présente de ce modèle est la reproduction du comportement non linéaire par la force de cisaillement mobilisée et les paramètres de dilatation mobilisés. Le modèle a été calibré en incorporant des données d'argile molle de Bangkok qui ont été produites ieures. En raison des déformations importantes de largile pratiques d'ingénierie courantes, où le problème est principalement résolu en appliquant la contrainte de cisaillement,

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Cite this article:
Saeed Kharaghani; HamidReza Bolouri Bazaz; Rivard Ali; Akhtarpour (2018) A study on the efficiency of the hardening soil model for soft clay in GEO2018. Ottawa, Ontario: Canadian Geotechnical Society.

@article{geo2018Paper198,author = Saeed Kharaghani; HamidReza Bolouri Bazaz; Rivard Ali; Akhtarpour ,title = A study on the efficiency of the hardening soil model for soft clay,year = 2018}