Shear creep behaviour of soil-structure interfaces under thermal cyclic loading

A. Golchin; Y. Guo; P. J. Vardon; S. Liu; G. Zhang; M. A. Hicks

doi:10.1680/jgele.22.00009

Shear creep behaviour of soil-structure interfaces under thermal cyclic loading

A. Golchin, Y. Guo^*, P. J. Vardon, S. Liu, G. Zhang, M. A. Hicks

^*Corresponding author for this work

Geo-engineering

Research output: Contribution to journal › Article › Scientific › peer-review

2 Citations (Scopus)

17 Downloads (Pure)

Abstract

The coupling effect of initial shear stress and thermal cycles on the thermomechanical behaviour of clay concrete and sand-concrete interfaces has been studied. A set of drained monotonic direct shear tests was conducted at the soil-concrete interface level. Samples were initially sheared to half of the material's shear strength and then they were subjected to five heating/cooling cycles before being sheared to failure. The test results showed that the effect of thermal cycles on the shear strength of the materials was negligible, yet shear displacement occurred during application of thermal cycles without an increase in shear stress, confirming the coupling between the shear stress and temperature. In addition, a slight increase of stiffness due to the coupling was observed which diminished with further shearing.

Original language	English
Pages (from-to)	22-28
Number of pages	7
Journal	Geotechnique Letters
Volume	13
Issue number	1
DOIs	https://doi.org/10.1680/jgele.22.00009
Publication status	Published - 2023

Keywords

Creep
Interface
Thermal cycles
Thermo-active structures
Thermomechanical behaviour

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10.1680/jgele.22.00009

jgele.22.00009Final published version, 508 KBLicence: CC BY

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title = "Shear creep behaviour of soil-structure interfaces under thermal cyclic loading",

abstract = "The coupling effect of initial shear stress and thermal cycles on the thermomechanical behaviour of clay concrete and sand-concrete interfaces has been studied. A set of drained monotonic direct shear tests was conducted at the soil-concrete interface level. Samples were initially sheared to half of the material's shear strength and then they were subjected to five heating/cooling cycles before being sheared to failure. The test results showed that the effect of thermal cycles on the shear strength of the materials was negligible, yet shear displacement occurred during application of thermal cycles without an increase in shear stress, confirming the coupling between the shear stress and temperature. In addition, a slight increase of stiffness due to the coupling was observed which diminished with further shearing.",

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T1 - Shear creep behaviour of soil-structure interfaces under thermal cyclic loading

AU - Golchin, A.

AU - Guo, Y.

AU - Vardon, P. J.

AU - Liu, S.

AU - Zhang, G.

AU - Hicks, M. A.

PY - 2023

Y1 - 2023

N2 - The coupling effect of initial shear stress and thermal cycles on the thermomechanical behaviour of clay concrete and sand-concrete interfaces has been studied. A set of drained monotonic direct shear tests was conducted at the soil-concrete interface level. Samples were initially sheared to half of the material's shear strength and then they were subjected to five heating/cooling cycles before being sheared to failure. The test results showed that the effect of thermal cycles on the shear strength of the materials was negligible, yet shear displacement occurred during application of thermal cycles without an increase in shear stress, confirming the coupling between the shear stress and temperature. In addition, a slight increase of stiffness due to the coupling was observed which diminished with further shearing.

AB - The coupling effect of initial shear stress and thermal cycles on the thermomechanical behaviour of clay concrete and sand-concrete interfaces has been studied. A set of drained monotonic direct shear tests was conducted at the soil-concrete interface level. Samples were initially sheared to half of the material's shear strength and then they were subjected to five heating/cooling cycles before being sheared to failure. The test results showed that the effect of thermal cycles on the shear strength of the materials was negligible, yet shear displacement occurred during application of thermal cycles without an increase in shear stress, confirming the coupling between the shear stress and temperature. In addition, a slight increase of stiffness due to the coupling was observed which diminished with further shearing.

KW - Creep

KW - Interface

KW - Thermal cycles

KW - Thermo-active structures

KW - Thermomechanical behaviour

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DO - 10.1680/jgele.22.00009

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JF - Geotechnique Letters

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Shear creep behaviour of soil-structure interfaces under thermal cyclic loading

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