Analysis on “three-box” model of stress-strain in frozen soil porous media based on representative macroscopic Volume

In cold regions, the pore space’s composition and phase state can affect elastic modulus of media. During winter, freezing conditions in soil results release water from space, which significant changes media’s distribution composition. There are a few weaknesses current research with respect to change example frozen soil. This paper presents that Representative Macroscopic Volume (RMV) choice strategy is provided for porosity as typical condition variable. Under freezing, “three-box” analytical model stress-strain calculation porous media established, namely, black-box model, gray-box white-box model. The relevant equations calculating presented based on proposed analysis stress conduction process. Results show discrepancy between computed experimental values slight, calculated by established this consistent actual state. It be deduced has practicality conclusions study guiding significance application