Abstract
The safety and stability of engineering in cold regions are strongly influenced by the dynamic behavior of frozen soil. The variation of dynamic modulus of frozen soil subjected to repeated cyclic loading were investigated based on the cyclic triaxial tests. The results show that the dynamic shear modulus can be characterized by its average value. The average value of dynamic shear modulus is strongly influenced by the initial bulk stress. Moreover, the influences of temperature and initial moisture content on strength of frozen soil are evaluated. The strength under confining pressure of 0.3MPa is used as the reference strength to reflect the physical and mechanical properties of frozen soil. The relationship between dynamic shear modulus and reference strength is proposed.
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