Maraveas, C, Tsavdaridis, KD and Nadjai, A (2016) Fire Resistance of Partially Unprotected Ultra Shallow Floor Beams (USFB): A Numerical Investigation. Fire Technology. ISSN 0015-2684
Abstract
This paper presents the fire resistance behaviour of the Ultra Shallow Floor Beams (USFB) partially encased in concrete using numerical analysis method based on material specifications of the EN1994-1-2. Investigating the behavior of USFBs under elevated temperatures is crucial in determining their fire resistance and evaluating their overall performance in contemporary construction. Even though the manufacturing company provides fire resistances for USFBs based on EC4-1-2 procedures, their response to elevated temperature effects remains up to date neither well documented nor clearly understood. The analyses involved two different beams of span 5m and 8m respectively, as specified by the manufacturer. Analysis results showed that such beams, when unprotected, experience severe temperature gradients if exposed to fire, as the lower flange still remains unprotected in contrast to the concrete encased part of the cross-section. As it was anticipated, the moment capacity governs the fire resistance of the beams and the load factor highly effects the elevated temperature behavior. In addition, the loss of the lower flange, which develops high temperatures, is not compensated by the web and consequently the moment capacity ultimately depends on the temperature of the lower flange. Results also suggest that simulated beams sustained the applied load for approximately 40min of exposure to the standard fire.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2016 The Author(s). This article is published with open access at Springerlink.com. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
Keywords: | Ultra Shallow Floor Beams; Fire Resistance; Composite; Flooring |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) > Institute for Resilient Infrastructure (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 17 Nov 2015 10:18 |
Last Modified: | 27 Apr 2016 00:33 |
Published Version: | http://dx.doi.org/10.1007/s10694-016-0583-5 |
Status: | Published |
Publisher: | Springer Verlag |
Identification Number: | 10.1007/s10694-016-0583-5 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:91616 |