›› 2005, Vol. 26 ›› Issue (6): 884-888.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Effect of accumulated pore pressure on shear modulus Gmax of saturated fine sand during undrained cyclic loading

JI Mei-xiu, CHEN Yun-min   

  1. Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:2004-04-08 Online:2005-06-10 Published:2013-12-17

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Abstract: The Hardin equation (1968) is usually adopted to calculate the elastic shear modulus Gmax of the saturated sand during earthquake in the dynamic effective stress analysis of soil structure. But the validity has not been confirmed because of the limitation of test facilities before. The effect of accumulated pore water pressure on Gmax is investigated based on a series of cyclic triaxial tests with piezoceramic bender element system. The test results indicate that the elastic shear modulus Gmax of fine sand can be calculated from the Hardin equation, but the material parameter must be determined by tests; and the elastic shear modulus decreases with the increase of pore water pressure and can also be calculated from the Hardin equation by adopting the actual average effective stress and void ratio during undrained cyclic loading.

Key words: fine sand, cyclic triaxial test, accumulated pore pressure, elastic shear modulus Gmax, Hardin equation

CLC Number: 

  • TU 41
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