›› 2006, Vol. 27 ›› Issue (5): 683-688.

• Fundamental Theroy and Experimental Research •     Next Articles

Experimental study on effect of shear strain accumulation on dynamic shear modulus and damping ratio of clay soil

SHANG Shou-ping, LIU Fang-cheng, DU Yun-xing, LU Hua-xi, WANG Hai-dong   

  1. College of Civil Engineering, Hunan University, Changsha 410082, China
  • Received:2005-03-09 Online:2006-05-10 Published:2013-11-05

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Abstract: The phenomena of strain accumulation in the specimen when tested by graded loading is studied through two group of comparative experiments, and then the influence of this phenomena on the dynamic shear modulus and damping ratio of the soil is analyzed. It is pointed out that because of the accumulation of shear strain, the hysteresis loops gained by graded loading method will shift along the shear strain axis as soon as the load grade number increases, while at the same time , the shape character of those loops will keep unchanged. The method of how to deal with the original data produced by the graded loading test is discussed. According to the results of the comparative experiments, it is concluded that the shear strain accumulating under comparatively small amplitude loads does little with the dynamic shear modulus and the damp ratio gained by the large graded loading test later. Lastly, the signification of the graded loading test method and its application to the soil dynamics research are discussed.

Key words: strain accumulation, dynamic shear modulus, damping ratio, test method, graded loading, cyclic simple shear test

CLC Number: 

  • TU 411.8
  • 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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