Cumulative cyclic deformation capacity of circular tubular braces under local Buckling / Toru Takeuchi in Journal of structural engineering, Vol. 137 N° 11 (Novembre 2011)  

Public ISBD [article]  inJournal of structural engineering > Vol. 137 N° 11 (Novembre 2011) . - pp. 1311-1318 Titre : Cumulative cyclic deformation capacity of circular tubular braces under local Buckling Type de document : texte imprimé Auteurs : Toru Takeuchi, Auteur ; Ryota Matsui, Auteur Année de publication : 2012 Article en page(s) : pp. 1311-1318 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Circular tubular brace Local buckling Cyclic loading Cumulative deformation Résumé : Tubular-section members are commonly used as seismic-resistant braces because they have a higher moment of inertia than open cross sections of equivalent area. However, the cumulative cyclic deformation capacity of tubular sections after buckling is smaller than that of open sections, such as H-shaped sections, because fracture is initiated by local buckling of circular tubular sections. To evaluate the seismic performance of such diagonal braces, it is essential to predict the cumulative cyclic deformation capacity of these braces before any fracturing. In this study, the cumulative cyclic deformation capacity of circular tube braces under local buckling was assessed by performing cyclic loading tests for a range of slenderness and diameter-to-thickness ratios. The mechanism of strain concentration in the tubular braces was studied in various types of analysis, and a method is proposed for assessing the cumulative deformation capacity before fracture based on the entire axial deformation of the braces. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i11/p1311_s1?isAuthorized=no [article] Cumulative cyclic deformation capacity of circular tubular braces under local Buckling [texte imprimé] / Toru Takeuchi, Auteur ; Ryota Matsui, Auteur . - 2012 . - pp. 1311-1318. Génie Civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 137 N° 11 (Novembre 2011) . - pp. 1311-1318 Mots-clés : Circular tubular brace Local buckling Cyclic loading Cumulative deformation Résumé : Tubular-section members are commonly used as seismic-resistant braces because they have a higher moment of inertia than open cross sections of equivalent area. However, the cumulative cyclic deformation capacity of tubular sections after buckling is smaller than that of open sections, such as H-shaped sections, because fracture is initiated by local buckling of circular tubular sections. To evaluate the seismic performance of such diagonal braces, it is essential to predict the cumulative cyclic deformation capacity of these braces before any fracturing. In this study, the cumulative cyclic deformation capacity of circular tube braces under local buckling was assessed by performing cyclic loading tests for a range of slenderness and diameter-to-thickness ratios. The mechanism of strain concentration in the tubular braces was studied in various types of analysis, and a method is proposed for assessing the cumulative deformation capacity before fracture based on the entire axial deformation of the braces. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i11/p1311_s1?isAuthorized=no

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