›› 2009, Vol. 30 ›› Issue (9): 2679-2685.

• Geotechnical Engineering • Previous Articles     Next Articles

A nonlinear rheological model of soft clay and its application to Tianjin littoral area

WANG Yuan-zhan, WANG Ting-ting, WANG Jun   

  1. School of Civil Engineering, Tianjin Key Laboratory of Port and Ocean Engineering, Tianjin University, Tianjin 300072, China
  • Received:2008-06-10 Online:2009-09-10 Published:2010-03-24

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Abstract:

Based on one-dimensional consolidation-creep laboratory test, the creep deformation of muddy soft clay in Tianjin littoral area is performed. A nonlinear rheological model is established; and the model coefficients are determined considering the characteristics of littoral soft clay. Furthermore, a settlement equation is deduced from the rheological model and applied to the settlement calculation of the soft soil under Beitang reservoir’s dam in Tianjin littoral area. Numerical results agree well with those of field measurement, which provides convincing evidences for model’s excellent solution quality and fidelity, and shows the necessity of considering the soft clay’s nonlinear rheological characteristics in settlement analysis. Finally, a pre-estimation on long-term creep settlement of the soft clay in Tianjin Binhai New Aera is presented.

Key words: littoral soft soil, rheological model, viscoelastic plasticity, creep, settlement

CLC Number: 

  • TU 447
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