Advanced analysis of steel framed buildings using the Brazilian standard and Eurocode-3 |
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Authors: | Alexandre Landesmann |
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Affiliation: | a Faculty of Architecture and Urbanism, Federal University of Rio de Janeiro, Av. Brigadeiro Trompowsky s/n, Prédio da FAU, sala 320, Cidade Universitária, ZIP 21941-590, Rio de Janeiro-RJ, Brazil b Civil Engineering Programme, COPPE, Federal University of Rio de Janeiro, POB 68506, ZIP 21945-970, Rio de Janeiro-RJ, Brazil |
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Abstract: | In this paper, a refined plastic hinge approach is modified to account for the tangent modulus model, as recommended by the European buckling curves for steel columns, which are the same as the strength curves for columns specified in the Brazilian code for steel buildings-NBR-8800. The computational programme was developed on the basis of the inelastic stability function of the beam-column element, and it can be used to assess the steel frame behaviour, including gradual yielding associated with residual stresses, second-order effects, geometrical imperfections and the flexibility of beam-to-column connections. The numerical results obtained are verified by comparison with the plastic zone approach, as previously presented by other researchers. The proposed analysis is to be applied in the Brazilian context. It has large advantages over conventional linear elastic procedures and our findings indicate that it is a reliable tool to use in daily design practice. |
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Keywords: | Advanced analysis Steel framed buildings Plastic hinge Stability function Tangent modulus Inelastic analysis Semi-rigid connection |
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