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Post-fire behaviour of eccentrically loaded reinforced concrete columns confined by circular steel tubes

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Liu et al (2016) - Post-fire behaviour of eccentrically loaded RC cols.pdfAccepted version707.23 kBAdobe PDFView/Open
Title: Post-fire behaviour of eccentrically loaded reinforced concrete columns confined by circular steel tubes
Authors: Liu, F
Yang, H
Gardner, L
Item Type: Journal Article
Abstract: The post-fire behaviour of eccentrically loaded reinforced concrete columns confined by circular steel tubes, also known as circular steel tube confined reinforced concrete (STCRC) columns, is investigated in this paper. A total of 12 experiments were conducted on eccentrically loaded circular STCRC stub columns after exposure to the ISO 834 standard fire, including both the heating and cooling phases. The temperatures across the tested sections, the axial load versus lateral displacement responses and the strains in the steel tubes were all measured and discussed. A finite element (FE) model was developed using the program ABAQUS, and validated against the test results from the present study, as well as related studies. Parametric studies were then performed to identify the influences of key parameters on the residual capacity of the eccentrically loaded STCRC columns, including eccentricity ratio, heating time, cross-sectional diameter, slenderness ratio, material strengths, steel tube to concrete area ratio and reinforcement ratio. Finally, a simplified method was proposed for predicting the residual load-bearing capacity of the eccentrically loaded STCRC columns after fire exposure.
Issue Date: 8-May-2016
Date of Acceptance: 8-Apr-2016
URI: http://hdl.handle.net/10044/1/44391
DOI: https://dx.doi.org/10.1016/j.jcsr.2016.04.008
ISSN: 1873-5983
Publisher: Elsevier
Start Page: 495
End Page: 510
Journal / Book Title: Journal of Constructional Steel Research
Volume: 122
Copyright Statement: © 2016, Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: Science & Technology
Technology
Construction & Building Technology
Engineering, Civil
Engineering
Circular steel tube confined reinforced concrete
Eccentrically loaded
Experiments
Finite element modelling
Post-fire
Residual capacity
Testing
SEISMIC RESISTANCE
STUB COLUMNS
EXPOSURE
FIRE
TEMPERATURE
PERFORMANCE
STRENGTH
Civil Engineering
0905 Civil Engineering
Publication Status: Published
Appears in Collections:Civil and Environmental Engineering
Faculty of Engineering