›› 2007, Vol. 28 ›› Issue (9): 1811-1816.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

An anisotropic elastoplastic model for soft clays

WEI Xing1 , HUANG Mao-song2   

  1. 1. Department of Geotechnical Engineering, Southwest Jiaotong University, Chengdu 610031, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China
  • Received:2005-10-28 Online:2007-09-10 Published:2013-10-15

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Abstract: The modified Cam-Clay model is only applicable for isotropically consolidated soft clay; and it cannot describe the anisotropic stress-strain behavior of anisotropically consolidated clay. A new model, which can be adopted for anisotropically consolidated soft clay, was developed here based on the modified Cam-Clay model. An anisotropic tensor and a shape parameter were introduced in the yield surface of the model. Initial value of the anisotropic tensor was determined by the initial consolidation stress state, and its evolution was described by a rotational hardening law both depending on plastic volumetric and deviatoric strain. The shape parameter enhanced the flexibility of the yield surface. Effectiveness of the model was verified by the triaxial experimental data of kaolin clay, boston Blue clay and Otaniemi clay.

Key words: soft clay, anisotropy, constitutive model, anisotropic consolidation

CLC Number: 

  • TU 43
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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