Abstract
The MTS-Landmark 370.10 test system is used to carry out low temperature conventional triaxial tests on frozen sand at a temperature of -7 ° C and the confining pressures of 0.1, 0.5, 1, 4, and 8 MPa. The test results show that the deviation stress-axial strain relationship curves of frozen sand are strain softening type, which can be divided into three stages: linear, nonlinear and strain softening. The modified Duncan-Chang model proposed by Lai et al. is used to describe the constitutive relation of frozen sand. The fitting results show that the model has good applicability and high fitting precision.
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