Shallow composite floor beams – Proposal of a simplified analytical method for standard fire rating

Zanon, Riccardo; Yıldız, Sevilay; Obiala, Renata; Braun, Matthias

doi:10.1002/cepa.1428

Cited by 3 publications

(3 citation statements)

References 25 publications

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“…Therefore, the results are on the safe side, even if the numerical model presents a 12% reduction of beam fire resistance, compared with the experiment. Zanon et al [10], during a similar study, also noticed this phenomenon. The authors [10] used tests from the same experimental campaign [5] in order to validate a numerical model for SFB type slim floors.…”

Section: Numerical Model -Mechanical Analysismentioning

confidence: 62%

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Numerical model validation of non-composite slim floor beam subjected to fire

Duma

Zaharia

Pintea

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Compared to traditional composite steel-concrete beams, where the concrete slab is supported by the top flange of a steel profile, in slim floor systems, the beam is integrated into the height of the concrete slab. These configurations are popular due to their cost-effectiveness and fire performance. However, fire design requires advanced calculation models, as Eurocodes do not provide a simplified method for the analysis of these types of beams when exposed to fire. The validation of the numerical models is an important issue for researchers, designers, software developers, and authorities. The European Standard for the fire design of composite steel and concrete structures, EN 1994-1-2, states that advanced calculation models must be validated against experimental test results. The paper presents the validation of a numerical model, for the thermal and mechanical analysis of slim floor beams, using SAFIR software. SAFIR is a special purpose computer program, based on the Finite Element Method, developed for the analysis of structures under elevated temperature conditions. The model is validated against an existing experimental fire test, available in the literature. The temperatures on the cross-section and the vertical beam displacements obtained numerically are reproducing very well the experimental results.

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Section: Numerical Model -Mechanical Analysismentioning

confidence: 62%

“…Zanon et al [10], during a similar study, also noticed this phenomenon. The authors [10] used tests from the same experimental campaign [5] in order to validate a numerical model for SFB type slim floors.…”

Section: Numerical Model -Mechanical Analysismentioning

confidence: 62%

Numerical model validation of non-composite slim floor beam subjected to fire

Duma

Zaharia

Pintea

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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“…Whilst rules for evaluating the design temperatures within slimfloor beams have been published [39], their basis could not be verified by the present authors. As a consequence of this, a simple calculation method for evaluating the sagging moment resistance of slim-floor beams in fire conditions was developed, and is presented in a companion paper [40]. It is proposed that this simplified method is incorporated within EN 1994-1-2 [2].…”

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confidence: 99%

New Eurocode 4 design rules for shallow floor construction

Hicks¹,

Braun²,

Marković³

et al. 2021

ce papers

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As members of Project Team SC4.T5, the authors of this paper present the main outcomes from the work that are intended for implementation within EN 1994‐1‐1 (Eurocode 4). General design and application rules for shallow floor beams will be presented, with a particular focus on: the classification of the composite cross‐section; non‐linear bending resistance; and the introduction of transverse bars as shear connectors.

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Analytical Method for the Bending Resistance of Slim Floor Beams with Asymmetric Double-T Steel Section under ISO Fire

et al. 2022

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The slim floor beams, characterized by the steel profile embedded in the concrete slab, may be found in different configurations, based on the shape of the steel profile cross-section, which can vary from a rectangular to double-T section. While the most common shape used nowadays is the double-T cross-section, the Eurocodes do not provide a simplified method for the fire resistance assessment. The literature offers a simplified method for computation of bending resistance under elevated temperature, based on existing research on thermal models, and was validated for a particular type of slim floor beams (SFB). The current study extends the scope of application of this method, for different types of slim floor beam, which include an asymmetric double-T steel cross-section. The objective was reached through a numerical procedure, by analyzing 162 configurations subjected to four different fire requirements (R30, R60, R90, R120), resulting in a total of 648 analyses, performed with a validated numerical model in SAFIR software. The results in terms of bending resistance showed that the simplified method represents a strong tool for the fire design of slim floor beams.

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Shallow composite floor beams – Proposal of a simplified analytical method for standard fire rating

Cited by 3 publications

References 25 publications

Numerical model validation of non-composite slim floor beam subjected to fire

Numerical model validation of non-composite slim floor beam subjected to fire

New Eurocode 4 design rules for shallow floor construction

Analytical Method for the Bending Resistance of Slim Floor Beams with Asymmetric Double-T Steel Section under ISO Fire

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