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)

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概要

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• A series of true triaxial tests on tell prismatic specimens of sand at three different void ratios from the basis for analyses, prediction and verification of the influence of shear banding on the three-dimensional failure conditions in granular material. The results of the true triaxial tests are reviewed and discussed in view of the shear banding that is observed in these tests. Theoretical conditions for shear banding, which are based on the behavior of the material near the observed shear banding phenomenon, are reviewed. The detailed procedure for shear banding analysis is explained in general and calculations are performed for a single hardening elasto-plastic constitutive model. The predicted shear banding events are compared with those observed in the experiments. It is shown that the predicted stress conditions for shear banding match those observed in the true triaxial tests, and it is concluded that shear banding plays an important role in the three-dimensional strength of granular materials. Thus, peak failure is caused by shear banding in the hardening regime in the approximate range of b=(σ_2-σ_3)/(σ_1-σ_3) form 0.18 to 0.85, while it occurs in the softening regime outside this range of b-values. A smooth, continuous 3D failure surface is therefore not generally obtained for granular materials.

• 社団法人地盤工学会の論文
• 2003-08-15

著者

• LADE POUL

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

• 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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