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Post-fire behaviour of slender reinforced concrete columns confined by circular steel tubes
File | Description | Size | Format | |
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Yang et al. (2015) - Post-fire behaviour of slender reinforced concrete columns confined.pdf | Accepted version | 1.15 MB | Adobe PDF | View/Open |
Title: | Post-fire behaviour of slender reinforced concrete columns confined by circular steel tubes |
Authors: | Yang, H Liu, F Gardner, L |
Item Type: | Journal Article |
Abstract: | The post-fire behaviour of slender reinforced concrete columns confined by circular steel tubes is investigated experimentally and numerically in this paper. Experiments were performed firstly to explore the fundamental behaviour of steel tube confined reinforced concrete (STCRC) slender columns after exposure to the ISO 834 standard fire, including the cooling phase. Temperature distributions, load versus lateral displacement curves, strains in the steel tube and failure modes were obtained and discussed. Next, a 3D finite element model was developed with the program ABAQUS using a sequentially coupled thermal-stress analysis. After validation of the FE model, parametric studies were carried out to identify the influence of key parameters on the load-bearing capacity and buckling reduction factor of slender STCRC columns. The considered parameters were the heating time, crosssectional dimension, slenderness ratio, material strength, steel tube to concrete area ratio and reinforcement ratio. Finally, a simplified design method was proposed for predicting load-bearing capacity of STCRC slender columns after exposure to standard fires. |
Issue Date: | 19-Nov-2014 |
Date of Acceptance: | 21-Oct-2014 |
URI: | http://hdl.handle.net/10044/1/49309 |
DOI: | https://dx.doi.org/10.1016/j.tws.2014.10.014 |
ISSN: | 0263-8231 |
Publisher: | Elsevier |
Start Page: | 12 |
End Page: | 29 |
Journal / Book Title: | Thin-Walled Structures |
Volume: | 87 |
Copyright Statement: | © 2014 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 Engineering, Civil Engineering Circular steel tube confined reinforced concrete Experiments Post-fire Residual capacity Slender column Testing thermal distribution FIRE RESISTANCE TUBULAR COLUMNS STRENGTH EXPOSURE TEMPERATURE DESIGN 0901 Aerospace Engineering 0905 Civil Engineering 0913 Mechanical Engineering Civil Engineering |
Publication Status: | Published |
Appears in Collections: | Civil and Environmental Engineering Faculty of Engineering |