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.