Failure criterion of cross-anisotropic soils with the method of macro-micro incorporation

Li, Xuefeng; Huang, Maosong; Qian, Jiangu; Kong, Liang

doi:10.1201/b10528-34

Cited by 10 publications

(15 citation statements)

References 13 publications

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“…This paper introduces the anisotropic state variable (Li et al 2010) into the generalized Mohr-Coulomb failure criterion equation, and gives an anisotropic failure criterion in linear form as follows:…”

Section: Failure Criteriamentioning

confidence: 99%

“…Considering that the fractal dimension provides a connection between the effect of microparticle size and the macroscopic strength, it can characterize the homogeneity of rock structures at different strengths and the uniformity of rocks on the microscopic scale [10] . Based on the author's work on the sand anisotropic damage criteria [11][12][13] , this paper described the degree of anisotropy and establishes the rules of the anisotropic damage with the combination of micro characteristics and fabric of the rockfill materials.…”

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confidence: 99%

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The Simulation of Rockfill in a Characteristic of Three-Dimensional Strength

Li¹,

Li²

2021

14th WCCM-ECCOMAS Congress

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To study the three-dimensional strength characteristics of rockfill material under an anisotropic state, the anisotropic state variables were introduced into the Mohr-Coulomb failure criterion, and the failure criterion describing the three-dimensional strength of rockfill which was obtained in linear form in this paper. The anisotropic state variables were established with the fabric of rockfill particles. Based on the experimental results of a large triaxial consolidated drained test, fractal dimension theory was introduced to study the relationship between strength and deformation characteristics under different gradation and confining pressures. The experimental results and simulation have shown that: (1) The fractal theory can be used to quantitatively describe the rockfill particles crushing with all kinds of grades under different stress levels. (2) The fabric of rockfill particles was closely related to the three-dimensional strength characteristics. (3) The anisotropic state variables can describe the three-dimensional strength characteristics of rockfill well from a microscopic perspective. 1 INTRODUCTION Rockfill was a common engineering material extensively used in hydraulic, railway, transportation, and other basic engineering construction. It showed different strength characteristics in the macroscopic affecting the stability of the structure. Therefore, the strength characteristics of rockfill materials have attracted the attention of the engineering and academic circles under different stress paths [1-2]. To study the strength characteristics of rockfill, many researchers carried a lot of large-scale triaxial test research. Studies have shown that void [3] , stress level and density [4] , confining pressure [5] , particle crushing [6] ,

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Section: Failure Criteriamentioning

confidence: 99%

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confidence: 99%

The Simulation of Rockfill in a Characteristic of Three-Dimensional Strength

Li¹,

Li²

2021

14th WCCM-ECCOMAS Congress

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“…Based on the work of the failure criterion for anisotropic sand and rockfill by Li et al [28,29], the novel anisotropic state variable was introduced, and the yield criterion in this research could be written as…”

Section: Yield Surfacementioning

confidence: 99%

The Constitutive Model of Rockfill Based on Property‐Dependent Plastic Potential Theory for Geomaterials

Zhang

et al. 2020

Advances in Civil Engineering

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To better control the strength and deformation of the roadbed, a constitutive model of rockfill was established based on property-dependent plastic potential theory for geomaterials. The effect of the particle gradation on the anisotropy was described in the model. According to the effect of the particle grading and crushing on the fractal dimension, the fractal theory and fabric tensor were introduced to establish the yield and failure criteria of the rockfill. By combining the property-dependent concepts of the materials and the results of the rockfill strength test, a critical state line considering the microstructure, fractal dimension, particle breakage, and stress state of the rockfill was established. The dilatancy equation was derived based on the novel potential theory and the hardening criterion affected by the critical state was established. A constitutive model of the rockfill in the general stress space was established under the framework of the novel potential theory. The 3D strength and its intensity change in the π plane were simulated through the drainage strength test results, which verified the description of the critical state under various stress paths. By simulating the stress-strain relationship, the validity and rationality of the model were verified.

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“…Guo [1] , Pradhan [2] , etc. a large number of experiments show that sand microscopic anisotropy obviously control the macroscopic strength characteristics; Wan and Guo [3] , Li and Dafalias [4] and a group of scholars all establish the constitutive relationship with fabric tensor; The authors also establish the strength criterion [5] , Constitutive model [6] , property-dependent plastic potential theory for geomaterials [7] , and analyze the mechanics characteristic of the anisotropic sand [8][9][10] . The study of Arthur and Phillips [11] , Yamada and Ishihara [12] shown the random arrangement of non-spherical particles and the distribution of pore space own the mathematical laws of probability and statistics, which describes the three causes of sand anisotropy [13,14] .…”

Section: Introductionmentioning

confidence: 99%

The parameters of orthotropic sand fabric

Li¹,

Song²

2015

Proceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering

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The description based on the microscopic theory of sand fabric, the novel amplitude parameters decrypting the spatial arrangement of non-spherical particles is defined, and the verification with the microscopic test for Toyoura sand is conducted. The spatial arrangement of non-spherical particles form the orthotropic of sand which describe with two independent angle of the particles of the long axis direction in three orthogonal directions component, one define three expressions of amplitude parameters on orthotropic plane. This expression is used to describe sand properties of orthotropic, transverse isotropic and isotropic. Experimental results show three amplitude parameters with a clear physical meaning can reflect the variation of orthotropic.

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Failure criterion of cross-anisotropic soils with the method of macro-micro incorporation

Cited by 10 publications

References 13 publications

The Simulation of Rockfill in a Characteristic of Three-Dimensional Strength

The Simulation of Rockfill in a Characteristic of Three-Dimensional Strength

The Constitutive Model of Rockfill Based on Property‐Dependent Plastic Potential Theory for Geomaterials

The parameters of orthotropic sand fabric

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