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Title:	Experimentelle Untersuchungen zum Querkrafttragverhalten von auskragenden Fahrbahnplatten unter Radlasten
Abstract:	Für Brückenbauwerke im Bestand mit Fahrbahnplatten ohne Querkraftbewehrung lässt sich nach derzeit gültigen technischen Regeln oft keine ausreichende Querkrafttragfähigkeit nachweisen. Der aktuelle Ansatz zur Berechnung der Querkrafttragfähigkeit ohne Querkraftbewehrung wurde allerdings hauptsächlich aus Querkraftversuchen an einfeldrigen, gelenkig gelagerten Balken abgeleitet. Da bisher nur wenige Versuche zur Querkrafttragfähigkeit von Kragplatten unter konzentrierten Lasten vorliegen, wurde im Rahmen eines von der Bundesanstalt für Straßenwesen (BASt) geförderten Forschungsvorhabens deren Querkrafttragverhalten genauer analysiert. Neben der mitwirkenden Breite für Querkraft standen das Momenten-Querkraft-Verhältnis und der Einfluss einer geneigten Biegedruckzone im Vordergrund der experimentellen Untersuchungen. Experimental investigations on the shear-bearing behaviour of bridge deck cantilever slabs under wheel loads The calculated shear capacity according to current design rules of a large number of existing concrete bridge deck slabs without shear reinforcement is not sufficient. However, the present design rules for the shear capacity of members without shear reinforcement were principally developed based on shear tests on simply supported single span beams. Since until now, only few tests on the shear capacity of cantilever slabs under concentrated loads have been conducted, the shear-bearing behaviour of cantilever slabs has been analysed within a research programme funded by the Federal Highway Research Institute of Germany (BASt). Besides the effective width for shear, the moment-shear relation and the influence of an inclined compression zone were experimentally investigated.
Source:	Beton- und Stahlbetonbau 108 (2013), No. 5
Page/s:	315-324
Language of Publication:	German

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