STRENGTH AND DEFORMATION CHARACTERISTICS OF SAND IN TORSIONAL SIMPLE SHEAR

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概要

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• This paper describes the strength and deformation properties of a clean sand (Toyoura sand) in torsional simple shear under the drained condition. It was found that the dependency on pressure level of both the angle of internal friction φ=arcsin {(σ_1'-σ_3')/(σ_1'+σ_3')}_<max> and the relationship between the stress ratio σ_1'/σ_3', the shear strain γ_<max>=ε_1-ε_3 and the volumetric strain ε_υ=ε_1+ε_3 at relatively large strains is very small when σ_3' is less than about O.5 kgf/cm^2 (49 kN/m^2). These results are well in accordance with those previously obtained for the sand by the triaxial compression tests, the plane strain compression tests and the torsional shear tests on isotropically consolidated specimens. The results of the present tests show that the relationships between σ_1'/σ_3', γ_<max> and ε_υ and the stress states in terms of b=(σ_2'-σ_3')/(σ_1'-σ_3') at relatively large strains in simple shear are very similar to those by the plane strain compression test in which the directions of principal stresses with respect to the fabric of the specimen are fixed to the values in the simple shear tests at relatively large strains. The angle of friction φ^* in simple shear defined in the conventional way as arctan (τ_<at>/σ_a')_<max> (τ_<at>/σ_a' is the stress ratio on the horizontal plane of shearing) was found less than φ by about 14%. It was found that φ in simple shear is well comparable with that in plane strain compression only when the directions of principal stresses with respect to the fabric of specimen are the same in the both testing methods.

• 社団法人地盤工学会の論文
• 1988-09-15

著者

• 堀井 宣幸

  Research Institute Of Industrial Safety Ministry Of Labour Formerly Visiting Research Personnel Of I

• 龍岡 文夫

  IIS, University of Tokyo

• Pradhan T

  Univ. Tokyo Tokyo Jpn

• Pradhan Tej

  Geo-research Institute Osaka Soil Testing Laboratory:institute Of Industrial Science University Of T

• Pradhan Tej

  Geo-research Institute Osaka Soil Test Laboratory Formerly Research Assistant Institute Of Industria

関連論文

• THE SIGNIFICANCE OF LOCAL LATERAL-STRAIN MEASUREMENT OF SOIL SPECIMENS FOR A WIDE RANGE OF STRAIN
• THE SIGNIFICANCE OF LOCAL LATERAL-STRAIN MEASUREMENT OF SOIL SPECIMENS FOR A WIDE RANGE OF STRAIN
• ねじり単純せん断における砂の強度・変形特性
• STRENGTH AND DEFORMATION CHARACTERISTICS OF SAND IN TORSIONAL SIMPLE SHEAR
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• SIMPLE SHEAR TESTING ON SAND IN A TORSIONAL SHEAR APPARATUS
• 1753 各種のせん断試験による砂の内部摩擦角
• 階段・通路の安全性に関する研究 : (第2報)-手摺に作用する荷重について : 建築計画
• ON STRESS-DILATANCY EQUATIONS OF SAND SUBJECTED TO CYCLIC LOADING
• AN AUTOMATED TRIAXIAL TESTING SYSTEM USING A SIMPLE TRIAXIAL CELL FOR SOILS
• EXPERIMENTAL STRESS-DILATANCY RELATIONS OF SAND SUBJECTED TO CYCLIC LOADING
• ELASTIC DEFORMATION PROPERTIES OF GEOMATERIALS
• Elastic Deformation Properties of Geomaterials (closure)
• LIQUEFACTION STRENGTH OF SANDS SUBJECTED TO SUSTAINED PRESSURE
• ON STRESS-DILATANCY EQUATIONS OF SAND SUBJECTED TO CYCLIC LOADING

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