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Numerical analysis of lateral torsional buckling of steel i-beams with and without web-openings under fire
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Orientador(es)
Resumo(s)
Steel structures are being widely used in construction industry owing to their excellent structural flexibility and to their high ductility to withstand lateral forces. However, for the case of solid and cellular steel beams, high temperature effect may result in different fire response for each case due to a great reduction of yield stress and Young’s modulus.
Moreover, when the beams are not restrained, lateral torsional bending phenomenon which are bound to take place is made worse in the case of fire. The aim of this study is to analyse the behaviour of steel beams with and without web openings when taking into account the effect of geometry and material imperfections. The results from the finite element models produced lateral and vertical displacements as well as the buckling moments.
Descrição
Palavras-chave
Cellular beam Imperfections Lateral torsional buckling Numerical analysis Fire
Contexto Educativo
Citação
Benyettou, S.; Kada, A.; Lamri, B.; Mesquita, L.M.R. (2019). Numerical analysis of lateral torsional buckling of steel i-beams with and without web-openings under fire. In 5º CILASCI – Congresso Ibero-Latino-Americano sobre Segurança contra Incêndio. Porto. ISBN 978-989-97210-3-6