Article (Scientific journals)
Considering the effects of localised fires in the numerical analysis of a building structure
Franssen, Jean-Marc; Pintea, Dan; Dotreppe, Jean-Claude
2007In Fire Safety Journal, 42 (6-7, SEP-OCT), p. 473-481
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Keywords :
localised fire; fire resistance; numerical model
Abstract :
[en] The methodologies that are used for analysing the fire behaviour of a structure that is subjected to a uniform thermal situation cannot be applied when the fire is localised. The concept of "zoning" can be applied: the structure is divided into several zones in which the situation is approximated as uniform. It is shown here that this division can lead to spurious forces in the structure. The structural code of the first author has been adapted in order to accommodate a continuous spatial variation of the fire environment. A series of uncoupled 2D thermal analyses is performed along the length of the beam finite elements and a series of ID thermal analyses is performed across the thickness of the shell finite elements. After a discussion of the concept and the particularities dictated by the continuous thermal environment, the methodology utilised is explained and is shown in an example consisting of a composite steel concrete car park subjected to a localised fire of the type given in Eurocode 1. (C) 2007 Elsevier Ltd. All rights reserved.
Disciplines :
Materials science & engineering
Author, co-author :
Franssen, Jean-Marc  ;  Université de Liège - ULiège > Département Argenco : Secteur SE > Ingénierie du feu
Pintea, Dan
Dotreppe, Jean-Claude ;  Université de Liège - ULiège > Département Argenco : Secteur SE > Struct. en béton
Language :
English
Title :
Considering the effects of localised fires in the numerical analysis of a building structure
Publication date :
2007
Journal title :
Fire Safety Journal
ISSN :
0379-7112
eISSN :
1873-7226
Publisher :
Elsevier Sci Ltd, Oxford, United Kingdom
Volume :
42
Issue :
6-7, SEP-OCT
Pages :
473-481
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 26 November 2009

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