Steel I-sections resistance under compression or bending by the Overall Interaction Concept

Lucile Gérard, Liya Li, Markus Kettler, Nicolas Boissonnade*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Existing design rules in current major standards for the cross-section resistance of I-shaped sections still suffer from several discrepancies and from a lack of accuracy. Accordingly, code design recommendations deserve improvements towards simplicity and economy. The current paper presents investigations achieved by means of extensive numerical studies on the ultimate local resistance of I and H-sections under simple load cases such as simple compression, major-axis bending or minor-axis bending. Results of full non-linear shell F.E. analyses are presented for a large range of hot-rolled and welded cross-sections. Then, subsequently to the determination of key parameters influencing the strength response, a consistent and convenient design formulation which follows the Overall Interaction Concept is eventually suggested for each load case.
Original languageEnglish
Article number106644
Number of pages16
JournalJournal of Constructional Steel Research
Publication statusPublished - Jul 2021


  • I-sections
  • Local buckling
  • Local strength
  • Overall Interaction Concept
  • Steel design

ASJC Scopus subject areas

  • Mechanics of Materials
  • Metals and Alloys
  • Building and Construction
  • Civil and Structural Engineering

Fields of Expertise

  • Sustainable Systems


Dive into the research topics of 'Steel I-sections resistance under compression or bending by the Overall Interaction Concept'. Together they form a unique fingerprint.

Cite this