›› 2011, Vol. 32 ›› Issue (2): 465-470.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

True triaxial tests and strength characteristics of silty sand

HU Ping1, HUANG Mao-song 2, 3, MA Shao-kun 4, LÜ Xi-lin 2, 3   

  1. 1. Scholl of Civil Engineering, University of Jinan, Jinan 250022, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 3. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 4. College of Resources and Environment, Guangxi University, Nanning 530004, China
  • Received:2009-09-22 Online:2011-02-10 Published:2011-02-16

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Abstract:

In order to investigate the effect of intermediate principal stress on strength of sands, a series of true triaxial compression tests of Shanghai silty sand under different intermediate principal stress coefficients are performed on flexible true triaxial apparatus. Then the Lode angle dependent shape function of Mohr-Coulomb's strength criterion is modified based on true triaxial tests results; and the true triaxial test results of Shanghai silty sands are simulated. The results show that the strength criterion based on true triaxial tests can describe the strength characteristics of sand in true 3D state preferably.

Key words: silty sand, true triaxial tests, intermediate principal stress, 3D, strength

CLC Number: 

  • TU 411
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