Nonlinear unified strength criterion for frozen soil based on homogenization theory
Junlin He, Fujun Niu, Wenji Su, Haiqiang Jiang
Abstract
To establish a strength criterion that can consider the composite properties and internal non-homogeneity of frozen soil, a load sharing model is first defined based on homogenization theory and the binary-medium structure model, and then the strength functions of frozen soil on the p-q plane and the π plane are established, respectively. Finally, a three-dimensional nonlinear unified strength criterion for frozen soil is proposed. The applicability of the proposed strength criterion is verified based on the multi-group triaxial compression test results and the directional shear test results at different stress Lode angles.
Topics & Concepts
Homogenization (climate)Nonlinear systemStrength theoryMathematicsComposite numberStructural engineeringCompressive strengthMaterials scienceGeotechnical engineeringEngineeringComposite materialPhysicsAlgorithmQuantum mechanicsBiologyBiodiversityEcologyClimate change and permafrostGeotechnical Engineering and Underground StructuresCryospheric studies and observations