Wang, J, Xiong, Y and Wanatowski, D orcid.org/0000-0002-5809-0374 (2020) HCA Study of Permanent Deformation of Sand Under Train-Induced Stress Path Considering Variable Confining Pressure. In: Tutumluer, E, Chen, X and Xiao, Y, (eds.) Advances in Environmental Vibration and Transportation Geodynamics. Lecture Notes in Civil Engineering, 66 . Springer Singapore , pp. 347-357. ISBN 9789811523489
Abstract
In this paper, a typical stress path experienced by subsoil in a railway foundation is used in a dynamic hollow cylinder apparatus (HCA) to obtain cyclic responses of soils subjected to moving trainloads. This is achieved through varying axial force, torque, inner and outer confining pressures independently during each load cycle. A multistage test using the specific stress path is conducted on Leighton Buzzard sand considering various magnitudes of the trainloads. Comparative studies using constant confining pressures are also carried out. It is found that in both cases with constant or variable confining pressures, the long-term deformation mechanism of the sand tends to change from shakedown to incremental collapse as the load level is increased. It was noticed that the increase rates of vertical permanent strain of the two cases are close if they have similar maximum ratios of deviator stress to mean effective stress (q/p)max and ratios of peak deviator stress to average mean effective stress qmax/pavg.
Metadata
Item Type: | Book Section |
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Authors/Creators: |
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Editors: |
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Keywords: | HCA; Trainloads; Variable confining pressure; Stress path testing |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > SWJTU Joint School (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 19 Aug 2020 14:42 |
Last Modified: | 19 Aug 2020 14:42 |
Status: | Published |
Publisher: | Springer Singapore |
Series Name: | Lecture Notes in Civil Engineering |
Identification Number: | 10.1007/978-981-15-2349-6_22 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:164341 |