RELATIVE DENSITY EFFECTS ON DRAINED SAND BEHAVIOR AT HIGH PRESSURES

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概要

• 論文の詳細を見る

• A high-pressure triaxial compression and extension apparatus was employed to investigate the effects of initial relative density on the drained behavior of sand. Experiments were performed on cylindrical specimens of Cambria sand with initial relative densities of 30% and 60%, and compared with previously published results for 90%. Confining pressures in the range of 0.25 to 60MPa were employed to obtain the characteristic behavior of the sand over a large range of pressures. As the confining pressure increased particle crushing increasingly influenced the stress-strain and volume change relations, producing increasing strains to failure and increasingly contractive volume changes. Beyond certain high values of mean normal stress at failure, increasing with initial relative density, the volumetric contraction and strains to failure began to decrease. The Mohr-Coulomb failure envelopes show the greatest curvature for the highest density, but the failure envelopes merge at high pressures where, due to particle crushing, the relations between void ratio and isotropic pressure are described by a single curve. The experiments show clearly that the rates of dilation at failure and the friction angles are directly related to each other, as has been proposed by many investigators. The friction angles are higher in extension than in compression for lower confining pressures, but a crossover occurs and the friction angles are higher in compression than in extension for higher confining pressures.

• 社団法人地盤工学会の論文
• 2005-02-15

著者

• LADE POUL

  Department of Civil Engineering, School of Engineering and Applied Science, University of California

• Lade Poul

  Department Of Civil Engineering The Catholic University Of America

• Lade Poul

  Department Of Civil Engineering Aalborg University

関連論文

• ELASTO-PLASTIC BEHAVIOR OF K_0-CONSOLIDATED CLAY IN TORSION SHEAR TESTS
• RELATIVE DENSITY EFFECTS ON UNDRAINED SAND BEHAVIOR AT HIGH PRESSURES
• Analysis and Prediction of Shear Banding under 3D Conditions in Granular Materials (IS-LYON 2003「地盤材料の変形特性」特集号)
• RELATIVE DENSITY EFFECTS ON DRAINED SAND BEHAVIOR AT HIGH PRESSURES
• EFFECTS OF STRESS ROTATION AND CHANGES OF b-VALUES ON CROSS-ANISOTROPIC BEHAVIOR OF NATURAL, K_0-CONSOLIDATED SOFT CLAY
• CHARACTERIZATION OF CROSS-ANISOTROPIC SOIL DEPOSITS FROM ISOTROPIC COMPRESSION TESTS
• APPLICATION OF FINITE ELEMENT METHOD TO PULLOUT RESISTANCE OF BURIED ANCHOR
• INSTABILITY OF GRANULAR MATERIALS AT HIGH PRESSURES
• A GENERAL FAILURE CRITERION AND STRESS-STRAIN RELATION FOR GRANULAR MATERIALS TO METALS

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