Preview

Author(s):	Huber, Patrick; Schweighofer, Anton; Kollegger, Johann; Brunner, Helmut; Karigl, Walter
Title:
Abstract:	Das ständig steigende Verkehrsaufkommen sowie die im Laufe der Jahre überarbeiteten Bemessungsnormen erfordern eine neue Beurteilung der angestrebten Nutzungsdauer bestehender Brücken. Die rechnerische Schubtragfähigkeit erweist sich hierbei in vielen Fällen als besonders problematisch. Im Zuge der Überarbeitung der österreichischen Nachrechnungsrichtlinie ONR 24008 “Bewertung der Tragfähigkeit bestehender Eisenbahn- und Straßenbrücken” wurden Vergleichsberechnungen bezüglich der rechnerischen Querkrafttragfähigkeit von Bestandsbrücken nach Eurocode 2 und fib Model Code 2010 durchgeführt. Der vorliegende Beitrag fasst die wesentlichen Ergebnisse aus dem Vergleich zwischen fib Model Code 2010 und dem Eurocode 2 zusammen und erläutert die Besonderheiten der Berechnung der rechnerischen Querkrafttragfähigkeit gemäß fib Model Code 2010. Comparison of the calculative shear resistance of existing bridges according to Eurocode 2 and fib Model Code 2010 Due to the constantly increasing traffic loads and the revised design approaches it becomes necessary to reassess the expected service life of existing bridges. In many cases the calculative shear resistance turns out to be particularly problematic. In the course of the revision of the Austrian Assessment Technical Regulation ONR 24008 “Evaluation of load capacity of existing railway and highway bridges” comparative calculations according to the shear carrying capacity of existing bridges conforming to Eurocode 2 and fib Model Code 2010 were carried out. The present paper summarizes the main results of the comparison between the fib Model Code 2010 and Eurocode 2 and explains characteristics of the calculations of the shear resistance according to fib Model Code 2010.
Source:	Beton- und Stahlbetonbau 107 (2012), No. 7
Page/s:	451-462
Language of Publication:	German

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