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Journal of Zhejiang University SCIENCE A 2005 Vol.6 No.3 P.229~236

http://doi.org/10.1631/jzus.2005.A0229


Experimental study of seismic cyclic loading effects on small strain shear modulus of saturated sands


Author(s):  ZHOU Yan-guo, CHEN Yun-min, HUANG Bo

Affiliation(s):  Department of Civil Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   qzking@zju.edu.cn

Key Words:  Cyclic loading, Seismic response analysis, Undrained cyclic triaxial test, Small strain shear modulus, Effective stress, Bender element, Soil-particle structure


ZHOU Yan-guo, CHEN Yun-min, HUANG Bo. Experimental study of seismic cyclic loading effects on small strain shear modulus of saturated sands[J]. Journal of Zhejiang University Science A, 2005, 6(3): 229~236.

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author="ZHOU Yan-guo, CHEN Yun-min, HUANG Bo",
journal="Journal of Zhejiang University Science A",
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pages="229~236",
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doi="10.1631/jzus.2005.A0229"
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%T Experimental study of seismic cyclic loading effects on small strain shear modulus of saturated sands
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%A HUANG Bo
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2005.A0229

TY - JOUR
T1 - Experimental study of seismic cyclic loading effects on small strain shear modulus of saturated sands
A1 - ZHOU Yan-guo
A1 - CHEN Yun-min
A1 - HUANG Bo
J0 - Journal of Zhejiang University Science A
VL - 6
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2005.A0229


Abstract: 
The seismic loading on saturated soil deposits induces a decrease in effective stress and a rearrangement of the soil-particle structure, which may both lead to a degradation in undrained stiffness and strength of soils. Only the effective stress influence on small strain shear modulus Gmax is considered in seismic response analysis nowadays, and the cyclic shearing induced fabric changes of the soil-particle structure are neglected. In this paper, undrained cyclic triaxial tests were conducted on saturated sands with the shear wave velocity measured by bender element, to study the influences of seismic loading on Gmax. And Gmax of samples without cyclic loading effects was also investigated for comparison. The test results indicated that Gmax under cyclic loading effects is lower than that without such effects at the same effective stress, and also well correlated with the effective stress variation. Hence it is necessary to reinvestigate the determination of Gmax in seismic response analysis carefully to predict the ground responses during earthquake more reasonably.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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zuheir@a<zuheir\_1232000@yahoo.co.uk>

2011-09-20 03:42:49

very good papers

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