Laboratory experimental research on dynamic shear modulus of saturated soil subjected to dynamic loading

The cyclic simple shear tests of the saturated soil with saturation 95%,92%,88% and 83% were carried out under the consolidation pressure of 50 kPa,100 kPa and 200 kPa,respectively.Of four sorts of soil sample under three consolidation pressures,the maximum dynamic shear modulus Gdmax,and the dynamic modulus ratio G/Gdmax-γ generalized curves were attained and analyzed comparatively.The results show that under the same consolidation pressure,the values of Gdmax,G/Gdmax shrink according to the growth of saturation;with the increasing of the consolidation pressure,the differences among Gdmax and G/Gdmax-γ decrease gradually.In the last part of the paper,this kind of phenomenon and its causes are under discussion and analysis.