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Experimental Study on Dynamic Shear Module and Damping Ratio of Shanxi Area Loess
Author(s): 
Pages: 523-528
Year: Issue:  4
Journal: Journal of Seismology

Keyword:  Shanxi loessresonant columndynamic triaxial testdynamic shear moduledamp-ing ratio;
Abstract: As important parameters of soil dynamic properties,dynamic shear module and damping ratio of soil are always concerned extensively.In order to study the dynamic properties on loess of Shanxi area,resonant column and dynamic triaxial tests were performed on loess from foundation of the earth-rock filled dam in Shanxi,dynamic shear modules and damping ratio data in relatively wide scope were obtained.Test results show that dynamic shear module and damping ratio of Shanxi loess were pronounced affected by initial moisture content of specimen.Meanwhile,normalized dynamic shear module could be well regressed by modified Hardin model,coefficients of the regression are provided as well.Damping ratio could be regressed by the formula suggested by this paper,the result shows it is in good agreement.Moreover,the parameters of maximum dynamic shear module acquired through empirical equation are presented.
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