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Unified Three-Dimensional Revision of Modified Cam Clay Model

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Abstract:

According to unified strength parameters obtained from unified strength theory, the slope of critical state line is modified to reflect critical states of different geomaterials under general stress states. Yield function that can consider the effect of the third deviatoricic invariant is proposed, and an elasto-plastic constitutive model is established by adopting non-associated flow rules; furthermore, methods of overcoming singular points on the yield surface are discussed. The proposed model is verified by true triaxial tests of clay, and results show that the model can well predict stress-strain relationships.

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Periodical:

Key Engineering Materials (Volumes 340-341)

Pages:

1267-1272

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.340-341.1267

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Online since:

June 2007

Authors:

Hang Zhou Li, Hong Jian Liao, Kyoji Sassa, Gong Hui Wang

Keywords:

Critical State Line, Modified Cam-Clay Model, Singularity, Unified Strength Theory

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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