Behavior of moment-resisting tall steel structures exposed to a vertically traveling post-earthquake fire

Behnam, Behrouz and Ronagh, Hamid R. (2013) Behavior of moment-resisting tall steel structures exposed to a vertically traveling post-earthquake fire. Structural Design of Tall and Special Buildings, 23 14: 1083-1096. doi:10.1002/tal.1109

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Author Behnam, Behrouz
Ronagh, Hamid R.
Title Behavior of moment-resisting tall steel structures exposed to a vertically traveling post-earthquake fire
Journal name Structural Design of Tall and Special Buildings   Check publisher's open access policy
ISSN 1541-7794
1541-7808
Publication date 2013-08-14
Year available 2013
Sub-type Article (original research)
DOI 10.1002/tal.1109
Open Access Status
Volume 23
Issue 14
Start page 1083
End page 1096
Total pages 14
Place of publication Bognor Regis, West Sussex, United Kingdom
Publisher John Wiley & Sons
Language eng
Formatted abstract
An investigation is performed on a 10-story moment-resisting steel structure designed to the Life Safety level of performance of the Federal Emergency Management Agency (FEMA) 356 code by exposing it to post-earthquake fire (PEF). The fire curve is accounted for using the natural fire method, and the fire is subjected to the floors vertically in three different scenarios: (a) fire initiated from the first floor, (b) fire initiated from the fourth floor and (c) fire initiated from the seventh floor. A delay of 5 minutes and 25 minutes are considered for spreading the fire between the floors. To make a comparison between the results, a concurrent fire is also considered for the fire analysis. The results indicate that the PEF resistance of the frame exposed to the concurrent fire and the 5 minutes delay is much lower than that with a delay of 25 minutes. The results also show that subjecting the frame to a delayed fire of 25 minutes leads to the collapse of the frame during cooling phase, whereas in the other scenarios, the frame collapses during heating phase. As a result, more considerations need to be implemented in the codes on top of that for the PEF itself and that is the appropriate rate of spread of fire between floors.
Keyword Post-earthquake fire
Sequential analysis
Fire resistance
Tall steel moment-resisting structures
Vertically traveling fire
Performance-based design
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article first published online: 14 AUG 2013

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2014 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 2 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 5 times in Scopus Article | Citations
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Created: Wed, 12 Feb 2014, 23:35:13 EST by Julie Hunter on behalf of School of Civil Engineering