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Use of State Surface Approach to Explain the Barcelona Basic Model
Summary State surface approach is becoming much less popular nowadays since many elasto-plastic modellers consider though it is useful as a simplified method in some practical problems, it can not be used to explain complex stress path dependency for unsaturated soils. Consequently, nearly all researchers used “normal compression lines at different suction levels” to develop their elasto-plastic models. In this paper, state surface approach is used to duplicate the examples given in the BBM model. All the examples under isotropic conditions can be reproduced without any programming. It is found that state surface approach, when used correctly, can bring greater convenience in explaining unsaturated soil behavior and generate better understanding of unsaturated soil behavior including stress path dependency.
Use of State Surface Approach to Explain the Barcelona Basic Model
Summary State surface approach is becoming much less popular nowadays since many elasto-plastic modellers consider though it is useful as a simplified method in some practical problems, it can not be used to explain complex stress path dependency for unsaturated soils. Consequently, nearly all researchers used “normal compression lines at different suction levels” to develop their elasto-plastic models. In this paper, state surface approach is used to duplicate the examples given in the BBM model. All the examples under isotropic conditions can be reproduced without any programming. It is found that state surface approach, when used correctly, can bring greater convenience in explaining unsaturated soil behavior and generate better understanding of unsaturated soil behavior including stress path dependency.
Use of State Surface Approach to Explain the Barcelona Basic Model
Zhang, Xiong (author) / Lytton, Robert L. (author)
2007-01-01
7 pages
Article/Chapter (Book)
Electronic Resource
English
unsaturated soil , matric suction , net mechanical stress , State Surface , Barcelona Basic Model , elasto-plastic , yeild curve Engineering , Theoretical and Applied Mechanics , Engineering Fluid Dynamics , Geotechnical Engineering & Applied Earth Sciences , Hydrogeology , Appl.Mathematics/Computational Methods of Engineering , Classical Continuum Physics
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