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Unified element and section approach to design of cold-formed steel structures / M. R. Bambach in Journal of structural engineering, Vol. 136 N° 4 (Avril 2010) 

Public ISBD [article]  in Journal of structural engineering > Vol. 136 N° 4 (Avril 2010) . - pp. 343-353 Titre : Unified element and section approach to design of cold-formed steel structures Type de document : texte imprimé Auteurs : M. R. Bambach, Auteur Année de publication : 2010 Article en page(s) : pp. 343-353 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Cold-formed  steel  Design  Elements  Effective  width  method  Buckling,  Strength Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Slender open-section cold-formed steel members that contain flanges with edge stiffeners may buckle in different modes and with mode interactions. The element design approach (effective width method) has been shown to produce unconservative capacity predictions for a particular class of such members. This paper presents a modification to the effective width method derived from an investigation of the fundamental behavior of edge stiffened flange elements and sections that contain them. The modified element design approach is validated against the results of 913 compression and bending members collected from the literature, where all section and member buckling modes and interactions were evident. A section design approach is also presented which is directly in line with the element approach. The unified element and section approach is shown to provide accurate and reliable design solutions for cold-formed steel compression and flexural members. Proposals for the North American specification for cold-formed steel structures are presented. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v136/i4/p343_s1?isAuthorized=no [article] Unified element and section approach to design of cold-formed steel structures [texte imprimé] / M. R. Bambach, Auteur . - 2010 . - pp. 343-353. Génie Civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 136 N° 4 (Avril 2010) . - pp. 343-353 Mots-clés : Cold-formed  steel  Design  Elements  Effective  width  method  Buckling,  Strength Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Slender open-section cold-formed steel members that contain flanges with edge stiffeners may buckle in different modes and with mode interactions. The element design approach (effective width method) has been shown to produce unconservative capacity predictions for a particular class of such members. This paper presents a modification to the effective width method derived from an investigation of the fundamental behavior of edge stiffened flange elements and sections that contain them. The modified element design approach is validated against the results of 913 compression and bending members collected from the literature, where all section and member buckling modes and interactions were evident. A section design approach is also presented which is directly in line with the element approach. The unified element and section approach is shown to provide accurate and reliable design solutions for cold-formed steel compression and flexural members. Proposals for the North American specification for cold-formed steel structures are presented. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v136/i4/p343_s1?isAuthorized=no