Vol. 12, No. 2, pp. 174-193 (2016)
AXIAL FORCE AND DEFORMATION OF A RESTRAINED STEEL BEAM IN FIRE
Description and validation of a simplified analytical procedure
Naveed Iqbal 1,*, Tim Heistermann 1, Milan Veljkovic 1, Fernanda Lopes 2,
Aldina Santiago 2 and Luis Simões da Silva 2
1 Luleå University of Technology, Division of Structural and Construction Engineering, Luleå, Sweden
2 University of Coimbra, Department of Civil Engineering, Coimbra, Portugal
*(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 17 February 2015; Revised: 7 May 2015; Accepted: 28 July 2015
DOI:10.18057/IJASC.2016.12.2.6
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ABSTRACT
Structural fire design is exceedingly adopting the performance based approach. There are evidentadvantages of this approach compared to the prescriptive methods from codes. An analytical procedure, based on thereal performance, must accurately predict the beam behaviour in fire. The study presented here proposes one suchsimplified analytical procedure aim to predict the real behaviour of a restrained steel beam. The proposed analyticalprocedure is validated through FE Analysis using FE models validated through test results. The study also attempts toestablish the importance of using semi-rigid connection strength with respect to accurately predicting the behaviorof the restrained beam at catenary stage.
KEYWORDS
Structural fire design, performance based design, Abaqus, fire tests, simplified design procedure,catenary action
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