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Author(s):	Ramm, W.; Kohlmeyer, C.
Title:
Abstract:	Wird bei Stahlverbundträgern der Steg des Stahlträgers durch große Öffnungen geschwächt, übernimmt in diesem Bereich der Betongurt einen Großteil der Querkraft. Die Analyse des sich dabei einstellenden Lastabtragungsmechanismus und die Ermittlung der Querkrafttragfähigkeit des Betongurts waren die Hauptthemen eines am Fachgebiet Massivbau und Baukonstruktion der Technischen Universität Kaiserslautern durchgeführten Forschungsprojektes, das von der Deutschen Forschungsgemeinschaft (DFG) gefördert wurde. Im folgenden Teil 1 des Aufsatzes werden die umfangreichen experimentellen und rechnerischen Untersuchungen und deren Ergebnisse dargestellt, wobei der Lastabtragungsmechanismus und die Versagensformen im Öffnungsbereich im Vordergrund stehen. Im Teil 2, der im nachfolgen Aprilheft erscheint, wird das darauf basierende Nachweiskonzept für den Betongurt vorgestellt. On the Shear-Bearing Capacity of the Concrete Slab of Composite Beams in the Region of Large Web Openings - Part 1: Experimental und Numerical Investigations If the web of a composite beam is weakened by a large opening, the concrete slab carries most of the shear force in this region. The analysis of the load bearing mechanism and the determination of the shear-bearing capacity were the main topics of a research project which was carried out at the Technical University of Kaiserslautern and was supported by the German Research Foundation (DFG). In the following part 1 of the report, the extensive experimental und numerical investigations as well as their results are presented. Special attention is paid to the load carrying mechanism and the failure modes. In part 2, which will follow in the April issue, the according concept for the design of the concrete slab is presented.
Source:	Beton- und Stahlbetonbau 105 (2010), No. 3
Page/s:	165-175
Language of Publication:	German

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