›› 2010, Vol. 31 ›› Issue (1): 71-75.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental research of correlation on static and dynamic strength of unsaturated silty clay

YANG Qing1, 2，WANG Meng1,2，LUAN Mao-tian1, 2，LIU Gong-xun1, 2   

  1. 1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China; 2. Institute of Geotechnical Engineering, School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China
  • Received:2008-05-23 Online:2010-01-10 Published:2010-02-02

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Abstract:

The improved static and dynamic universal triaxial and torsional shear apparatus for unsaturated silty is employed to perform matric suction controlled cyclic triaxial tests under consolidated drained condition. Through a series of static and dynamic triaxial tests on unsaturated remoulded slity clay. The characteristics of static and dynamic strength of unsaturated silty clay are studied. The rules that static strength of silty clay changes with confining pressure and matric suction, and dynamic strength changes with confining pressure and matric suction and number of cycles are also analyzed. Moreover, it is verified that the correlation of strength between static and dynamic test of unsaturated silty clay is remarkable. Finally, some experience formulas of ascertaining dynamic strength curve according to static strength are presented by normalizating test data, so as to reduce the workload for analyzing of stability on unsaturated foundations.

Key words: unsaturated silty, matric suction, cyclic loading, triaxial test, dynamic strength

CLC Number: 

  • TU 411
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