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Furnace tests on unprotected and protected concrete filled structural hollow sections
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Rush, David, Bisby, Luke, Gillie, Martin, Jowsey, Allan and Lane, Barbara (2015) Furnace tests on unprotected and protected concrete filled structural hollow sections. Fire Safety Journal, 78 . pp. 71-84. doi:10.1016/j.firesaf.2015.07.007 ISSN 0379-7112.
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Official URL: http://dx.doi.org/10.1016/j.firesaf.2015.07.007
Abstract
The accurate prediction of cross-sectional temperatures within concrete filled steel hollow (CFS) sections is critical for the accurate prediction of fire resistance. Whilst there have been many thermal and structural tests conducted on CFS columns, there are few that report the full cross-sectional thermal profile, and when they are reported, the sensor density is low, hindering the ability to validate models. This paper presents furnace tests and thermal modelling on 14 unprotected and 20 protected CFS sections, and examines the effect of several parameters on cross-sectional thermal profiles, as well as assessing the accuracy of both Eurocode thermal analysis guidance and intumescent fire protection design guidance. This paper shows that; (a) the assumptions within the Eurocode guidance can lead to large over-estimations in cross-sectional temperatures; (b) proposes new thermal modelling assumptions in three key areas; and (c) shows that the current intumescent fire protection design guidance is very conservative.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Journal or Publication Title: | Fire Safety Journal | ||||
Publisher: | Pergamon | ||||
ISSN: | 0379-7112 | ||||
Official Date: | November 2015 | ||||
Dates: |
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Volume: | 78 | ||||
Page Range: | pp. 71-84 | ||||
DOI: | 10.1016/j.firesaf.2015.07.007 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published |
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