Simple equations for the calculation of the temperature within the cross-section of slim floor beams under ISO Fire

Zaharia, Raul; Franssen, Jean-Marc

doi:10.12989/scs.2012.13.2.171

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Article (Scientific journals)

Simple equations for the calculation of the temperature within the cross-section of slim floor beams under ISO Fire

Zaharia, Raul; Franssen, Jean-Marc

2012 • In Steel and Composite Structures

Peer Reviewed verified by ORBi

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https://hdl.handle.net/2268/162487

DOI
10.12989/scs.2012.13.2.171

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Keywords :

Fire resistance; Composite floor; temperature; Slim floor

Abstract :

[en] The calculation of fire resistance for a composite structural element comprises the calculation of the temperature within its cross-section and of the load bearing capacity, considering the evolution of the steel and concrete mechanical properties, function of the temperature. The paper proposes a method to calculate the bending capacity under ISO fire, for Slim Floor systems using asymmetric steel beams, with a wider lower flange or a narrow upper flange welded onto a half hot-rolled profile. The temperatures in the cross-section are evaluated by means of empirical formulas determined through a parametrical analysis, performed with the special purpose non-linear finite element program SAFIR. Considering these formulas, the bending capacity may be calculated, using an analytical approach to determine the plastic bending moment, for different fire resistance demands. The results obtained with this simplified method are validated through numerical analysis.

Disciplines :

Civil engineering

Author, co-author :

Zaharia, Raul; Univ. of Timisoara

Franssen, Jean-Marc ; Université de Liège - ULiège > Département Argenco : Secteur SE > Ingénierie du feu

Language :

English

Title :

Simple equations for the calculation of the temperature within the cross-section of slim floor beams under ISO Fire

Publication date :

2012

Journal title :

Steel and Composite Structures

ISSN :

1229-9367

eISSN :

1598-6233

Publisher :

Techno-Press, Taejon, South Korea

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 30 January 2014

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