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Author(s):	Kettler, M.; Greiner, R.
Title:
Abstract:	Es wird die bereits für andere Tragfähigkeitsprobleme von Bauteilen (Knicken, Beulen) entwickelte “Overall-Methode” auf die Berechnung der Querschnittstragfähigkeit von Stahlprofilen angewendet. Dies führt zu einer neuen Berechnungsmethode, die den gesamten elasto-plastischen Bereich ohne die Notwendigkeit einer Klasseneinteilung umfasst. Basierend auf zahlreichen Versuchen und Querschnittsberechnungen mittels geometrisch, materiell nichtlinearer Analysen mit Imperfektionen werden (analog den Knicklinien) Bemessungskurven für die Abminderungsfaktoren vorgeschlagen, die für bestimmte Querschnittstypen wie I-beziehungsweise H-Profile oder Rechteck-Hohlprofile, einen einheitlichen Verlauf im elasto-plastischen Bereich aufweisen. An overall concept for the cross-section resistance in the elasto-plastic range. The “overall method” which has been developed for other load carrying problems of steel members (e.g. lateral member buckling or buckling of shells) is applied to the calculation of the cross-section resistance of steel members. This leads to a new procedure that covers the whole elasto-plastic range without the need of cross-section classification. Based on numerous experimental tests and numerical calculations (GMNIA) design curves for the reduction factors of I- and H-shaped sections and RHS-sections are proposed that show a consistent transition in the elasto-plastic range.
Source:	Stahlbau 78 (2009), No. 10
Page/s:	742-749
Language of Publication:	German

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