Revision of EN 1993-1-1 – Design rules for structural analysis, cross-sectional resistance and member buckling

Alain Bureau (Corresponding author), H.H. Snijder, Markus Knobloch, Ulrike Kuhlmann, Leroy Gardner, Andreas Taras, Luis Simoes da Silva

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)
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Abstract

In the framework of the revision of Eurocode 3, Part 1–1, several amendments have been proposed and accepted in order to improve the rules for the resistance to member buckling. For clarification, a flow chart connecting the global analysis (first or second order), the imperfections and the type of verification has been implemented for ease of use. Since the publication of the standard in 2005, many research projects have been conducted across Europe on this topic and their results have contributed to provide appropriate answers to problems identified in practice. Therefore, the revised code provides new design rules for stability. Important works of calibration have been performed in these different projects to derive appropriate values of the partial factor on the resistance side. For example, a new formulation for lateral–torsional buckling has been introduced for the calculation of the reduction factor. The consequence is a reduction of the discrepancy between the results obtained by these new methods and those from experimental or numerical tests. In order to extend the scope of Eurocode 3, Part 1–1, additional methods have been implemented in an annex to cover the stability of members with mono-symmetric cross-section under compression axial force, biaxial bending, with or without torsion. The format of the resistance criteria remains similar to the format of the current interaction formulae so that the designers can easily identify the evolution of the rules. This article presents in a systematic way the new implementations in the formal vote version FprEN 1993-1-1 of the code.
Original languageEnglish
Pages (from-to)202-212
Number of pages11
JournalSteel Construction
Volume15
Issue number4
DOIs
Publication statusPublished - 4 Nov 2022

Keywords

  • Analysis and design
  • Eurocode
  • General
  • classification of cross-sections
  • code calibration
  • cross-sectional resistance
  • global analysis
  • lateral–torsional buckling
  • member buckling

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