Elastoplastic Deformation Characteristics of Gravelly Soils

AbstractThis study explores the elastoplastic deformational behavior of gravelly soils. A series of drained triaxial tests with controlled stress paths [conventional triaxial compression (CTC) and conventional triaxial extension (CTE)] were conducted using large specimens composed of gravelly soils....

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Bibliographic Details
Published inJournal of geotechnical and geoenvironmental engineering Vol. 139; no. 6; pp. 947 - 955
Main Authors Weng, Meng-Chia, Chu, Bin-Lin, Ho, Yu-Ling
Format Journal Article
LanguageEnglish
Published Reston, VA American Society of Civil Engineers 01.06.2013
Subjects
Applied sciences
Buildings. Public works
Confining
Deformation
Elastic deformation
Elastoplasticity
Exact sciences and technology
Geotechnics
Gravel
Modulus of elasticity
Plastic deformation
Soil (material)
Soil investigations. Testing
Strength of materials (elasticity, plasticity, buckling, etc.)
Structural analysis. Stresses
Technical Papers
Deformation
Plastic flow
Stress strain relation
Property of soil
Nonassociated flow rule
Experimental device
Experimental study
Gravelly soil
Experimental result
Elastoplastic deformation
Elastoplasticity
Soil properties
Soil test
Shear stress
Gravel
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Summary:AbstractThis study explores the elastoplastic deformational behavior of gravelly soils. A series of drained triaxial tests with controlled stress paths [conventional triaxial compression (CTC) and conventional triaxial extension (CTE)] were conducted using large specimens composed of gravelly soils. Experimental results reveal that the elastic and plastic deformation of gravelly soils exhibits the following characteristics: (1) the elastic shear modulus stiffens under increase of hydrostatic loading; (2) during the CTC tests, plastic deformation occurs before the failure state, and the influence of confining pressure on the plastic strain is insignificant; (3) through the CTE path, the shear strain dominates the plastic deformation; (4) based on the distribution of plastic flows, the gravelly soils follow the nonassociated flow rule; and (5) this study proposes a possible geometry of plastic potential surface for gravelly soil, which includes two parts: an approximately horizontal line and an elliptic surface in the p−J2 plane.
Bibliography:ObjectType-Article-1
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ISSN:1090-0241
1943-5606
DOI:10.1061/(ASCE)GT.1943-5606.0000827