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Titre :
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Closed-form procedure for predicting the capacity and demand of steel beam-columns under fire (2011)
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Auteurs :
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Spencer E. Quiel, Auteur ;
Maria E. Moreyra Garlock, Auteur ;
Ignacio Paya-Zaforteza, Auteur
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Type de document :
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Article : texte imprimé
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Dans :
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Journal of structural engineering (Vol. 137 N° 9, Septembre 2011)
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Article en page(s) :
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pp. 967-976
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Note générale :
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Génie Civil
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Langues :
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Anglais
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Index. décimale :
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624 (Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes)
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Tags :
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Fire Beam-columns Performance-based Steel design Perimeter column
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Résumé :
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During a fire, columns on the perimeter of a building will be subject to moments induced by both a thermal gradient and the restraint of axial expansion by adjacent heated beams, which themselves develop axial load. These members thus act as beam-columns because they are then subject to a combination of axial load plus moment caused by a combination of gravity plus thermal loading. This paper presents a two-pronged procedure to predict the behavior of the perimeter column as a beam-column, considering both the individual member response (including thermal gradients) and the global response (including the interactions of adjacent members). All methods discussed in the paper are closed-form (i.e., they require no iteration) and can therefore be solved by using a spreadsheet or simple mathematical algorithm. The framework is sufficiently simple for use in codified structural-fire design and could be included in a reference of performance-based analysis methods for steel structures. Although this paper specifically addresses the performance of columns on the perimeter of buildings, the proposed framework can be a blueprint for the performance-based analysis of other beam-columns, such as floor beams.
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DEWEY :
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624.17
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ISSN :
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0733-9445
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En ligne :
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http://ascelibrary.org/sto/resource/1/jsendh/v137/i9/p967_s1?bypassSSO=1
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