Prof. Knobloch, Prof. Kuhlmann and Prof. Taras: Structural member stability in the second generation of Eurocode 3

STCO OLS #2 will be given by Prof. Markus Knobloch (Ruhr-University Bochum), Prof. Ulrike Kuhlmann (Stuttgart University) and Prof. Andreas Taras (ETH Zurich) – supported by Anna-Lena Bours and Fabian Jörg – with a keynote "Structural member stability in the second generation of Eurocode 3":

1. General background to the development of

• the second generation of Structural Eurocodes
• prEN 1993-1-1:2020
  

2. Enhancing “ease of use” for structural analysis (methods of analysis for ultimate limit state design checks)

3. Improvements to

• classification of cross-sections
• design rules for semi-compact sections
• imperfections
• design rules for lateral torsional buckling

4. Extension and innovation of

• the scope of stability verifications
• circular and elliptical hollow sections
• buckling curves for heavy sections, for angles and for hot rolled I- and H- sections in grade S460
• local load introduction without stiffeners
• Annex E: Basis of the calibration of partial factors

The keynote is based on a two part paper by Knobloch, M.; Bureau, A.; Kuhlmann, U.; da Silva, L. S.; Snijder, H. H.; Taras, A.; Bours, A.-L.; Jörg, F. Structural member stability verification in the new Part 1-1 of the second generation of Eurocode 3.

Part 1: Evolution of Eurocodes, background to partial factors, cross-section classification and structural analysis (DOI 10.1002/stco.202000016),
Part 2: Member buckling design rules and further innovations. (DOI 10.1002/stco.202000027), which had been published in Steel Construction 13 (2020) issues 2 and 3.

The OLS gives an overview of the developments of the structural member verification in prEN 1993‐1‐1:2020 "Eurocode 3: Design of steel structures – part 1‐1: General rules and rules for buildings", of the second generation of Eurocodes. Many improvements to design rules have been established with respect to structural analysis, resistance of cross‐sections and stability of members. The OLS focuses on member stability design rules and deals with the basis for the calibration of partial factors, the introduction of more economic design rules for semi‐compact sections, methods for structural analysis in relation to the appropriate member stability design rules, new design rules for lateral torsional buckling plus other developments and innovations. The upcoming most relevant changes to member buckling design rules are thus illustrated.