Constitutive model of frozen soil with damage and numerical simulation of the coupled problem

On the basis of the microscopic mechanics of composite material, an elastic constitutive model for frozen soil containing damage is presented. For the frozen sand soil with different ice contents and under different temperature conditions, the result calculated by the constitutive model agrees with the actually measured stress-strain curve. After numerically simulating the coupled problem of water, temperature and stress fields of channel frozen and frozen soil foundation by means of a program, a more accurate and practical temperature field is obtained, which is consistent with the prediction and tests in literature. It is shown that related physical properties of frozen soil and a quantitative relationship between them can be obtained.