A study on the shear modulus and damping ratio of reclaimed soil in Yun Lin nearshore area

In this study, using the filled material in Yun Lin nearshore area as test samples, a series of resonant column test has been performed to evaluate the dynamic properties of filled material. From the test results, the relation curve of normalized shear modulus (G/G max ) vs. shear strain ( γ ) lies on the upper bound of the curve suggested by Seed and Idriss, and the damping ratio ( D ) vs. shear strain ( γ ) lies on the lower bound of the suggested curve. The influence of confining pressure, different fines contents and relative densities on dynamic properties of reclaimed soil were discussed. Based on the equations suggested by Seed and Idriss, a new proposed method was established to evaluate the shear modulus of reclaimed soil under different fine contents and relative densities. Using the resonant column triaxial test and static triaxial test results, and based on elastic theory for 1% of axial strain, the deviator stress and G max are found to be related. The results shown in this paper can be used as a reference for foundation and structure design in land reclamation area.