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Parametrical study on the behaviour of steel and composite cellular beams under fire conditions
Vassart, Olivier; Bailey, C. G.; Bihina, Gisèle et al.
2010In Kodur, Venkatesh; Franssen, Jean-Marc (Eds.) Structures in Fire. Proceedings of the Sixth International Conference
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Keywords :
cellular beam; fire; steel beam; composite beam; parametrical study
Abstract :
[en] This paper describes an extensive parametric study on the behaviour of cellular beam under fire conditions. Different finite element models using shell elements were developed considering both material and geometrical non-linearity; CAST3M [1], ANSYS [2] and another one in SAFIR [3]. They were calibrated on the basis of a new experimental test campaign performed in the scope of the project FICEB+ [4] funded by the Research Fund for Coal and Steel. The comparison between the finite element prediction and actual experimental results showed a good agreement in terms of failure modes, load deflection relationship and ultimate loads. At failure, temperature measured during the fire tests indicated that failure arising by web post buckling of cellular beams in fire cannot be simply estimated by applying temperature dependent reduction factors on strength alone, as given in codes. A design model representing the behaviour of cellular beam in fire conditions has been developed by Vassart [5-7]. This design model is able to predict the complex behaviour of cellular beam in case of fire comprising web-post buckling and Vierendeel bending, as well as standard flexural bending. The results of the Finite Element Models are compared in terms of critical temperatures and failure mode obtained using the design model. This paper also contains some tests results that were used to calibrate the FEM model and the comparison between analytical and FEM models.
Disciplines :
Materials science & engineering
Author, co-author :
Vassart, Olivier;  Arcelor Mittal R&D, G.-D. of Luxemburg
Bailey, C. G.;  University of Manchester, UK
Bihina, Gisèle;  CTICM, France
Nadjai, Ali;  University of Ulster, UK
Hawes, Mike;  ASDWestok limited, UK
Peigneux, Christophe ;  Université de Liège - ULiège > Département Argenco : Secteur SE > Ingénierie du feu
Simms, W. I.;  SCI, UK
Franssen, Jean-Marc  ;  Université de Liège - ULiège > Département Argenco : Secteur SE > Ingénierie du feu
Language :
English
Title :
Parametrical study on the behaviour of steel and composite cellular beams under fire conditions
Publication date :
2010
Event name :
Sixth International Conference Structures in Fire
Event organizer :
Michigan State University
Event place :
East Lansing, United States
Event date :
June 2-4, 2010
Audience :
International
Main work title :
Structures in Fire. Proceedings of the Sixth International Conference
Editor :
Kodur, Venkatesh
Franssen, Jean-Marc  ;  Université de Liège - ULiège > Urban and Environmental Engineering
Publisher :
DEStech Publications, Inc, Lancaster, PA, United States
ISBN/EAN :
978-1-60595-027-3
Pages :
349-357
Peer reviewed :
Peer reviewed
Available on ORBi :
since 25 March 2010

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