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Author(s):	Lange, J.; Friede, R.
Title:	Auswirkungen der Vorspannung auf das Tragverhalten von SL-Verbindungen
Abstract:	Der Tragsicherheitsnachweis für Schrauben mit Zug- und Querbelastung erfolgt nach DIN 18800-1 (810) durch die quadratische Interaktion. Dabei stellt sich die Frage, ob bei reiner Querbeanspruchung eine Vorspannkraft als Zuganteil berücksichtigt werden muss. Um diese Frage zu klären, wurden am Fachgebiet Stahlbau der TU Darmstadt Abscherversuche an Schrauben mit unterschiedlichen Vorspanngraden durchgeführt. In diesem Beitrag werden die Versuche vorgestellt und Empfehlungen zur Behandlung der Vorspannkraft ausgesprochen. Influence of the preload on the resistance of bearing-type connections. The design resistance of bolts under tension and shear is given in DIN 18800-1 (810) by a quadratic interaction. The question is, whether the tension due to a preload has to be taken into account. The workgroup steel construction of the Technische Universität Darmstadt, Germany, has run tests to assess the influence of the preload in bearing-type connections. In this paper the tests are presented and recommendations to take the preload into account are given.
Source:	Stahlbau 79 (2010), No. 7
Page/s:	515-520
Language of Publication:	German

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