Behavior of Liquefied Sands Under Extremely Large Strain Levels in Cyclic Torsional Shear Tests

Kamiya, Takashi; Sato, Takeshi; Koseki, Junichi; Abadimarand, M.

doi:10.3208/sandf.48.727

Cited by 53 publications

(23 citation statements)

References 16 publications

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“…It can be seen from Eq. (15) that the model gives pure elastic sand response at the onset of loading direction reversal as K p1 is infinite ðρ=ρ ¼ ∞Þ, which is supported by experimental observations (Kiyota et al 2008;Chiaro et al 2009). Whenρ ¼ ρ (corresponding to the virgin loading case),…”

Section: Plastic Modulus and Dilatancy Relation For Constant Mean Strsupporting

confidence: 56%

“…Experimental observations show that there is appreciable plastic strain accumulation in sand during cyclic shear (Oda et al 2001;Kiyota et al 2008;Chiaro et al 2009); hence, the authors employ a cone-shaped bounding surfacef 1 to describe sand behavior under such loading conditions (Fig. 1).…”

Section: Bounding Surfacef 1 and Yield Cap Fmentioning

confidence: 99%

“…Since it remains difficult to measure the fabric of sand using conventional laboratory tests and other in situ test techniques, F 0 ¼ 0.5 is simply assumed for Toyoura sand prepared by dry deposition in several layers (Yoshimine et al 1998) and air pluviation (Kiyota et al 2008;Chiaro et al 2009) in this study . Different F 0 is used for Toyoura sand prepared by other methods (see the text below).…”

Section: Determination Of Model Parametersmentioning

confidence: 99%

“…The test results for Toyoura sand prepared by air pluviation (Kiyota et al 2008;Chiaro et al 2009) will be used. Since this sample preparation method is similar to the dry deposition method used by Yoshimine et al (1998), F 0 ¼ 0.5 is also used for these sand samples.…”

Section: Model Simulations For Sand Behavior In Cyclic Simple Shearmentioning

confidence: 99%

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Constitutive Modeling of Anisotropic Sand Behavior in Monotonic and Cyclic Loading

Gao

Zhao

2015

J. Eng. Mech.

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An anisotropic plasticity model is proposed to describe the fabric effect on sand behavior under both monotonic and cyclic loading conditions within the framework of anisotropic critical state theory. The model employs a cone-shaped bounding surface in the deviatoric stress space and a yield cap perpendicular to the mean stress axis to describe sand behavior in constant mean stress shear and constant stress ratio compression, respectively. The model considers a fabric tensor characterizing the internal structure of sand associated with the void space system and its evolution with plastic deformation. The fabric evolution law is assumed to render the fabric tensor to become codirectional with the loading direction tensor and to reach a constant magnitude of unit at the critical state. In constant stress ratio compression, the final degree of anisotropy is proportional to a normalized stress ratio. An anisotropic variable defined by a joint invariant of the fabric tensor and loading direction tensor is employed to describe the fabric effect on sand behavior in constant mean stress monotonic and cyclic shear. A systematic calibrating procedure of the model parameters is presented. Satisfactory comparison is found between the model simulations and test results on Toyoura sand in both monotonic and cyclic loadings with a single set of parameters. The important role of fabric and fabric evolution in capturing the sand behavior is highlighted. Limitations and potential improvement of the model in describing cyclic mobility of very dense sand and sand behavior in nonproportional loading have been discussed.

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Section: Plastic Modulus and Dilatancy Relation For Constant Mean Strsupporting

confidence: 56%

Section: Bounding Surfacef 1 and Yield Cap Fmentioning

confidence: 99%

Section: Determination Of Model Parametersmentioning

confidence: 99%

Section: Model Simulations For Sand Behavior In Cyclic Simple Shearmentioning

confidence: 99%

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Constitutive Modeling of Anisotropic Sand Behavior in Monotonic and Cyclic Loading

Gao

Zhao

2015

J. Eng. Mech.

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“…In addition, Kokusho (2000) reported that signiˆcant deformation could be associated not only with the driving force due to the gravity but also a formation of a water lm in the liqueˆed layer. In order to investigate the above large strain liquefaction properties, we modiˆed a torsional shear apparatus and performed a series of undrained cyclic torsional shear tests up to a double amplitude shear strain of about 100z (Kiyota et al, 2008). We found that there is a limiting value of double amplitude shear strain, g L(DA) , to initiate strain localization.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Liquefaction-Induced Ground Deformation Between Results from Undrained Cyclic Torsional Shear Tests and Observations From Previous Model Tests and Case Studies

Kamiya

Koseki

Sato³

2010

Soils and Foundations

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Effect of Membrane Penetration on the Undrained Cyclic Behavior of Gravelly Sands in Torsional Shear Tests

Chua¹,

Kamiya

Shiga

et al. 2022

Proceedings of the 4th International Conference on Performance Based Design in Earthquake Geotechnical Engineering (Beijing 202

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Behavior of Liquefied Sands Under Extremely Large Strain Levels in Cyclic Torsional Shear Tests

Cited by 53 publications

References 16 publications

Constitutive Modeling of Anisotropic Sand Behavior in Monotonic and Cyclic Loading

Constitutive Modeling of Anisotropic Sand Behavior in Monotonic and Cyclic Loading

Comparison of Liquefaction-Induced Ground Deformation Between Results from Undrained Cyclic Torsional Shear Tests and Observations From Previous Model Tests and Case Studies

Effect of Membrane Penetration on the Undrained Cyclic Behavior of Gravelly Sands in Torsional Shear Tests

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