Internally fire protected composite steel-concrete slim-floor beam
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Títol
Internally fire protected composite steel-concrete slim-floor beamData de publicació
2021-01-15Editor
ElsevierCita bibliogràfica
ALBERO, V., et al. Internally fire protected composite steel-concrete slim-floor beam. Engineering Structures, 2021, 227: 111447Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
https://www.sciencedirect.com/science/article/abs/pii/S0141029620340487Versió
info:eu-repo/semantics/acceptedVersionParaules clau / Matèries
Resum
The slim-floor beam is a composite concrete-steel beam fully integrated into the floor
depth that was developed at the beginning of the 1990s. This composite beam presents a very
good behaviour during the fire event ... [+]
The slim-floor beam is a composite concrete-steel beam fully integrated into the floor
depth that was developed at the beginning of the 1990s. This composite beam presents a very
good behaviour during the fire event because most of the steel parts of the section remain
protected by the concrete encasement. Indeed, in a fire event, only the bottom surface of the
lower steel plate results exposed to the heat source. The use of intumescent coating or other
fireproof materials is the most common way to insulate the steel beam from fire but requires an
accurate application and also appropriate maintenance during its whole life cycle to ensure
proper fire protection. Thus, related to this last idea, the objective of this work is to present a
new slim-floor configuration which increases the insulation of the beam from fire by using a
design strategy that avoids the needed for maintenance. This new beam configuration has been
called “Internally Fire Protected Slim-Floor Beam” (IFP-SFB) and implies a thermal break
included within the beam cross-section. This paper presents the results of a series of thermal
tests applied to this innovative slim-floor type proposed by the authors and its comparison
against the most commonly used slim-floor configurations. Finally, the benefits of the proposed
IFP-SFB configuration are presented, resulting in up to 30-60 minutes of additional fire
resistance time. The IFP-SFB configuration is at present right-protected and under evaluation
by the Spanish Office of Patents and Trademarks with reference number P201930438. [-]
Publicat a
Engineering Structures 2021; 227:111447Drets d'accés
© 2020 Elsevier Ltd. All rights reserved.
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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