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Author(s):	Lantsoght, Eva; van der Veen, Cor; de Boer, Ane; Walraven, Joost
Title:
Abstract:	In Anbetracht steigender Verkehrslasten und geringer angesetzter Tragfähigkeiten in den vor Kurzem eingeführten Eurocodes steht in den Niederlanden die Querkrafttragfähigkeit vieler bestehender Brücken mit Stahlbetonmassivdecke zur Debatte. In den Normvorschriften werden jedoch günstige Wirkungsmechanismen, wie die Querkraftverteilung in den Platten, nicht berücksichtigt. Man benötigte Forschungsergebnisse, um das Verhalten von Stahlbetonplatten unter Einzellasten in der Nähe von Auflagern zu verstehen. Für diese Studie wurden Versuche an Platten und Balken durchgeführt. Sie zeigten, dass Platten unter konzentrierter Querkraftbelastung eine größere Tragfähigkeit haben als Balken. Das bedeutet, dass für Plattenbrücken ein höherer Belastungswert angesetzt werden kann, sodass weniger Brücken als bisher vermutet einer weiteren Prüfung bedürfen. Shear capacity of slabs close to supports - Overview of experiments The shear capacity of many of the existing reinforced concrete solid slab bridges in The Netherlands is subject to discussion due to the higher traffic loads and lower prescribed shear capacities in the recently implemented Eurocodes. However, the code provisions do not take into account beneficial mechanisms such as transverse load redistribution in slabs. Research was needed to understand the behavior of reinforced concrete slabs under concentrated loads close to supports. For this study, experiments on slabs and beams were carried out. The experiments showed that slabs under concentrated loads in shear have a larger capacity than beams. This implies that a higher capacity can be contributed to slab bridges upon assessment, so that less bridges will be identified as needing further study.
Source:	Beton- und Stahlbetonbau 111 (2016), No. 5
Page/s:	288-300
Language of Publication:	German

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