Effect of realistic boundary conditions and structural systems on the stability behaviour of steel structures

FOSTA P 1456 - AIF 21057

Abstract

The use of slender steel members promotes the competitiveness of steel structures in structural engineering. However, it requires an efficient design, in particular for the struc-tural stability behaviour and lateral torsional buckling. Therefore, the simplified design method with reduction factors is very important. Despite the increased application of com-puter-based analysis and design as well as the use of numerical methods, this simplified method is still widely used in engineering practice and is also well-known to engineers from other domains than steel structures. Often-used connections in structural engineering, such as typical main and secondary beam connections, often deviate from the idealizations on which the method is based, in particular the simply supported member. Depending on the type of connection, the torsional stiffness varies and a significant difference in the structural behaviour between idealized and real structures is to be expected. For head-plate connec-tions, the fixed effect on warping is known but is generally not considered. And finally, at the system level, there are only a few simple members. Continuous members or frame members are more common.

Project Team

University of Stuttgart, Institute of Structural Design, Prof. Kuhlmann, Fabian Jörg
Ruhr-Universität Bochum, Institute of Steel, Lightweight and Composite Structures

Project Funding

AiF, FOSTA, MPA, Astron, bde GmbH, Breinlinger Ingenieure Hochbau GmbH, Donges SteelTec GmbH, Goldbeck, Haller Industriebau GmbH, Harrer Ingenieure, Ingenieurbüro Hauf GmbH & Co. KG, Ingenieurgesellschaft für Stahlbauplanung GmbH, Mayer-Vorfelder und Dinkelacker, Mohnke | Höss Bauingenieure, Peiner Träger GmbH, sbp schlaich berger-mann partner, Weiske+Partner GmbH

Project Start

01.03.2020

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