›› 2008, Vol. 29 ›› Issue (4): 1041-1044.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Creep tests on soft clay and its empirical models

LU Ping-zhen, ZENG Jing, SHENG Qian   

  1. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan 430071，China
  • Received:2007-07-06 Online:2008-04-10 Published:2013-07-10

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Abstract: Based on the stress-control triaxial apparatus, the CU triaxial creep tests of subgrade soft clay under different confining pressures were carried out by using multi-grade loading mode. The full-process creep curves under different confining pressures were obtained. Furthermore, the creep curves of multi-step constant load，the equal-time stress-strain curves were gained by using “Chen method”. Taking the confining pressure 100 kPa for example, a power&hyperbolic creep equation was proposed. In the equation, the power and hyperbolic equation are to model stress-strain and strain-time relationship respectively. Compared with Singh-Mitchell’s model and Mesri’ model, the creep equation suggested is thought to be more suitable to reflect the creep characteristics.

Key words: soft clay, creep test, creep curves, creep models

CLC Number: 

  • TU 411.3
  • 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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