›› 2012, Vol. 33 ›› Issue (2): 336-342.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Discussion on dynamic test and characteristics of structural properties of Quaternary soft clay in Hangzhou region

DING Bo-yang, ZHANG Yong   

  1. Zhejiang University of Technology, Hangzhou 310014, China
  • Received:2010-06-01 Online:2012-02-10 Published:2012-02-14

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Abstract: Due to new tectonics movements and drastic climate change, there are different types, and thicknesses of sediment on Quaternary soft clay in Hangzhou region, which have some characteristics of structural properties in particular. In order to investigate the dynamic characteristics of Quaternary soft clay in Hangzhou region, a series of dynamic triaxial tests are conducted. The stress-strain backbone curves and some kinds of dynamic property parameters of structured soft clay in Hangzhou are obtained. It is discovered that the change of the sediment environment is a cause to structural properties of soft clay in Hangzhou region and affects initial dynamic elastic modulus Ed0 obviously. On the side of the maximum amplitude on dynamic strain, the control of structural properties of soft clay is random and unobvious. Generally, there is a good power function relationship between the shear wave velocity and buried depth of structural soft clay, but the different kinds of structural soft clays may have different relationships. In addition, it is shown that structural properties of soft clay could have some influences on the relationship between damping ratio and shear modulus.

Key words: structured soft clay in Hangzhou, sedimentary environment, dynamic triaxial test, backbone curve, initial dynamic elastic modulus, shear wave velocity, damping ratio

CLC Number: 

  • TU 435
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