Quantitative Research by Non-local Fracture Criterias Difference of Frozen Soil Strength in Different Tensile Test

Abstract

Frozen soil strength is an important index in practical engineering design, but different test methods can get different strength values. Non - localization theory characterizes material properties by describing the characteristic length of non-uniform materials. In this paper, the non-localized theory of mesoscopic materials is introduced into frozen soil, explaining that the difference of different test strengths of frozen soil comes from the non-uniformity of frozen soil. The relationship between non-uniformity and strength and the relationship between uniaxial tensile strength and bending tensile strength are described quantitatively through uniaxial tensile test and bending tensile test.