›› 2013, Vol. 34 ›› Issue (1): 47-52.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Strength property of Shanghai clay in true triaxial tests

SHENG Jia-ren，WU Chao-jun，YE Guan-lin，WANG Jian-hua   

  1. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China
  • Received:2011-09-29 Online:2013-01-10 Published:2013-01-10

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Abstract: A series of isotropic consolidated drained true triaxial tests with different Lode angles in the same π plane are carried out with an automatic controlled mixed boundary true triaxial apparatus. The maximum and minor principal stresses are applied by two pairs of rigid platens; and the intermediate principal stress is applied by water pressure in triaxial cell. Undisturbed soil sample is prepared by block sampling method; and totally 5 drained tests with different Lode angles (0°, 15°, 30°, 45°, 60°) are presented. Test results show that the shear strength, the yielding & failure points of Shanghai soft clay decrease while Lode angles increase. The volume change increases first and turns to decrease when Lode angle is larger than 30°. In general, three-dimensional strength of the Shanghai soft clay obeys the SMP (spatial mobilized plane) failure criterion.

Key words: true triaxial test, Shanghai clay, drained shear test, Lode angle

CLC Number: 

  • TU 411
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