Abstract: This paper presents the resonant column test results on Wuhan Silty soil samples. The relationships between the dynamic shear modulus, G; damping ratio, μ; dynamic shear modulus ratio, G/Gmax and the dynamic shear strain are obtained throughout the tests. The parameters that describe the Davidenkov skeleton curve are obtained through the test data fitting method. The subroutine module for the dynamic elasticplastic constitutive model is developed and is implemented into a two dimensional ABAQUS numerical model for nonlinear seismic reaction of silty soils.

Key words: Resonant Column Test, Dynamic Nonlinear Viscoelastic Constitutive Model of Soils, Free Field, Nonlinear Earthquake Response Analysis, ABAQUS Software