›› 2009, Vol. 30 ›› Issue (7): 1904-1908.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

A continuum mechanics-based description for Gibson’s finite-strain consolidation theory

YUAN Da-jun1, DING Zhou-xiang 1, 2, ZHU He-hua2, JIANG Ming-jing2   

  1. 1. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; 2. Education Ministry’s Key Laboratory of Geotechnical and Underground Engineering, Tongji University, Shanghai 200092, China
  • Received:2008-05-30 Online:2009-07-10 Published:2011-03-10

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Abstract:

A novel continuum mechanics-based model is presented to overcome the one-dimensional limitations of Gibson’s finite-strain consolidation theory. The second Piola-Kirchhoff stress and Green strain are used to replace Lagrangian stress and void ratio respectively in Gibson’s theory. The proposed model can take into account of both the geometrical nonlinearity and the material nonlinearities of soil’s compressibility and permeability; and it has the advantange of multi-dimensional generalization. Based on the experimental data from engineering practice, the finite-strain coefficient of consolidation and the coefficient of convection are investigated. The results show that the convection rate decreases with the increase of strain, indicating that the dead weight effects tend to diminish during finite-strain consolidation process.

Key words: Gibson’s finite-strain consolidation theory, continuum mechanics, Lagrangian description, governing equation, convection

CLC Number: 

  • TU43
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