Resumo

PEREIRA, R. G.; PIRES, T. A. C.; DUARTE, D.  e  SILVA, J. J. Rêgo. Assess of residual mechanical resistance of reinforced concrete beams after fire. Rev. ALCONPAT [online]. 2019, vol.9, n.1, pp.93-105.  Epub 29-Set-2020. ISSN 2007-6835.  https://doi.org/10.21041/ra.v9i1.299.

This paper presents an experimental program to determine the residual strength of simple supported reinforced concrete beams subject to bending after fire. Also presented is a three-dimensional, nonlinear finite element model capable of predicting the thermal and mechanical (residual) behavior of this type of structural element. The experimental results obtained with beams under up to 120 min. of fire exposure show that it did not have significant reduction in their residual resistance. The numerical model was accurate in predicting temperatures and residual strength when compared to the experimental results.

Palavras-chave : beam; reinforced concrete; residual strength; after fire; experimental and numerical analysis.

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