Butt welded connections of high strength steel

Author:

von Arnim Mareike1,Spiegler Jennifer1,Kuhlmann Ulrike1

Affiliation:

1. Institute of Structural Design, University of Stuttgart, Germany

Abstract

<p>High-performance materials such as high strength steels allow for resource-efficient innovative structures. Therefore, economical and user-friendly design concepts for welded connections of high strength steels are required. Current design rules had been developed mainly for mild steels, e.g. requiring an overmatching of the filler metal. It is not considered, that a soft area which may form in the heat-affected zone of welded high strength steel connections may lead to an overestimation of the load-carrying capacity. Besides, mixed connections as well as under- and overmatching filler metals are not included in the current design codes. Based on a large number of experimental and numerical investigations, a design concept has been developed which takes the characteristics of butt welded high strength steel connections into account. Additionally, experimental and numerical investigations are planned to transfer the new concept of design also to mixed connections.</p>

Publisher

International Association for Bridge and Structural Engineering (IABSE)

Reference18 articles.

1. Schröter, F. Stähle für den Stahlbau – Anwendung moderner Baustähle und Neuerungen im Regelwerk. In: Stahlbau- Kalender 2007, Kuhlmann, U., editor. Ernst & Sohn: 245-316, 2007.

2. EN 1993-1-8:2005 + AC:2009 – Eurocode 3: Design of steel structures – Part 1-8: Design of joints; German version DIN EN 1993-1- 8:2010-12.

3. Bergmann, J. P., Hildebrand, J., Kuhlmann, U., Spiegler, J., Keitel, S., Mückenheim U. Schlussbericht. Tragfähigkeit von Stumpfnähten höherfester Stähle im Stahlbau. Forschungsvorhaben Arbeitsgemeinschaft industrieller Forschungsvereinigung e.V. (AiF), DVS-Nr.: 09.083, 2020.

4. EN 1993-1-12:2007 + AC:2009 – Eurocode 3: Design of steel structures – Part 1-12: Additional rules for the extension of EN 1993 up to steel grades S700; German version DIN EN 1993-1-12:2010-12.

5. CEN/TC250/SC3/WG8/N247 or SC3/N3176. prEN 1993-1-8: Final draft (including comments from the Technical Reviewer) – Eurocode 3: Design of steel structures – Part 1-8: Design of joints, 2020.

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