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Author(s):	Rasche, Christina; Kuhlmann, Ulrike
Title:
Abstract:	Im Stahlbau gibt es einen Trend zu zunehmend schlankeren und leichten Konstruktionen aus Baustählen mit höherer Festigkeit (Streckgrenze ReH > 355 N/mm2). In den letzten Jahren wurden hierzu moderne Stähle entwickelt, die neben einer hohen Festigkeit gute Schweißeigenschaften und eine hohe Zähigkeit besitzen. Trotz der guten Schweißeigenschaften ist die normative Tragfähigkeit insbesondere von Kehlnahtverbindungen dieser Stähle gering. In diesem Beitrag werden experimentelle und numerische Untersuchungen zur Tragfähigkeit von Kehlnahtverbindungen höherfester Baustähle vorgestellt. Als Ergebnis wird die Tragfähigkeit dieser Kehlnahtverbindungen bestimmt und ein erweitertes Bemessungsmodell zur Bestimmung der Tragfähigkeit von Kehlnahtverbindungen höherfester Baustähle S460 und S690 unter Berücksichtigung des Schweißzusatzwerkstoffs vorgestellt. Load bearing capacity of fillet welded connections of high strength steel. In recent years a trend towards an increasing number of slim and lightweight steel constructions using high-strength steels can be observed (yield strength ReH > 355 N/mm2). Therefore, modern high-strength steels have been developed, which comprise aside a high strength, good welding characteristics and a high ductility. Despite the good welding characteristics there is a low normative load-bearing capacity of fillet welded joints of high-strength steels. In this article experimental and numerical investigations on the load-bearing capacity of fillet welds are presented. As a result the load bearing capacity of these fillet welded connections is determined. An expanded design model for high-strength steels S460 and S690 is presented, which considers both, the strength of the base and the filler metal.
Source:	Stahlbau 81 (2012), No. 11
Page/s:	889-897
Language of Publication:	German

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