Testing and nonlinear fitting of dynamic shear modulus of soil

Soil dynamic shear modulus in the shear strain range of 10-6~10-4 can be obtained by the resonant column test,and it can be obtained by the cyclic triaxial test in the shear strain range of 10-6~10-2.The dynamic shear modulus in the shear strain range of 10-6~10-2 can be obtained by combining two kinds of test methods,which can give us reasonable dynamic shear modulus in the soil dynamic analysis,which also can improve the shortcomings that we get the modulus by extrapolation based on the limited data.In this paper,combined test method of dynamic shear modulus of soil is provided,and the different fitting results are also studied in it.