MODELLING OF AGEING EFFECTS ON THE ELASTO-VISCOPLASTIC BEHAVIOUR OF GEOMATERIAL
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概要
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The time effects on the stress-strain behaviour of geomaterial consist of effects of loading rate and ageing. The positive ageing effects are analysed based on the results from drained triaxial compression (TC) tests on cement-mixed kaolin and well-graded gravelly soil and incorporated into a non-linear three-component model that can simulate the elasto-viscoplastic behaviour of geomaterials. The inviscid yielding is controlled by the inviscid yield stress that develops basically by irreversible straining and time elapsing following, respectively, a basic inviscid strain-hardening function and an ageing function. The inviscid yield stress may develop additionally by positive interaction between ageing and inviscid yielding following an interaction function, which expresses an additional strength gain by longer ageing at higher shear stress levels. Positive interaction effects are damaged by subsequent irreversible straining following a damage function. These functions are formulated based on experimental results. Illustrative model simulations are presented to describe the structure of the proposed model. The model is validated by simulating drained TC tests exhibiting significant effects of loading rate and ageing.
- 社団法人地盤工学会の論文
著者
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TATSUOKA FUMIO
Department of Civil Engineering, Tokyo University of Science
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KONGKITKUL WARAT
Department of Civil Engineering, King Mongkut's University of Technology Thonburi
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BENEDETTO HERVE
Departement Genie Civil et Batiment, Ecole Nationale des Travaux Publics de l'Etat
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Tatsuoka Fumio
Department Of Civil Engineering Tokyo University Of Science
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Tatsuoka Fumio
Tokyo Univ. Sci. Jpn
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Benedetto Herve
Departement Genie Civil Et Batiment Ecole Nationale Des Travaux Publics De L'etat
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KONGSUKPRASERT LALANA
Department of Civil Engineering, University of Tokyo
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NISHI TAKAHIKO
Japan Railway Construction, Transport and Technology Agency
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SANO YUSUKE
Kyosei-kiko Co. Ltd.
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Kongsukprasert Lalana
Department Of Civil Engineering University Of Tokyo
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Kongsukprasert Lalana
Department Of Civil Engineering Tokyo University Of Science
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Sano Yusuke
Kyosei-kiko Co. Ltd.:department Of Civil Engineering Tokyo University Of Science
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Nishi Takahiko
Japan Railway Construction Transport And Technology Agency:department Of Civil Engineering Universit
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Kongkitkul Warat
Department Of Civil Engineering King Mongkut's University Of Technology Thonburi:tus
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Kongkitkul Warat
Department Of Civil Engineering King Mongkut's University Of Technology
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Kongkitkul Warat
King Mongkut's University Of Technology:department Of Civil Engineering Tokyo University Of Sci
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BENEDETTO HERVE
Departement Genie Civil et Batiment, Ecole Nationale des Travaux Publics de l'Etat
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