Experimental assessment of I-shaped steel beams with longitudinal stiffeners under lateral-torsional buckling

Translated title of the contribution: Experimental assessment of I-shaped steel beams with longitudinal stiffeners under lateral-torsional buckling

Néstor I. Prado, Julián Carrillo, Gustavo A. Ospina, Dario Ramirez-Amaya

Research output: Contribution to journalArticle in an indexed scientific journalpeer-review

1 Scopus citations

Abstract

This study focused on the experimental assessment of the behavior of I-shaped steel beams with longitudinal stiffeners under the action of lateral-torsional buckling. Thirty-three IPE-140 steel beams with and without longitudinal stiffeners were tested under simple-support conditions with a laterally unbraced length ranging from 0.69 to 6.0 m. The stiffeners spacing was 0.42 m, which represented three times the depth of the section. The structural behavior of the beams is discussed in terms of their flexural capacity, the lateral displacement of the compression flange and the failure twist angle. The results showed that the use of longitudinal stiffeners increased the flexural capacity up to 82%, decreased the lateral displacement of the compression flange and the failure twist angle up to 72 and 90% respectively, with respect to the specimens without stiffeners.

Translated title of the contributionExperimental assessment of I-shaped steel beams with longitudinal stiffeners under lateral-torsional buckling
Original languageEnglish
Pages (from-to)278-287
Number of pages10
JournalDYNA (Colombia)
Volume85
Issue number207
DOIs
StatePublished - 1 Oct 2018

Bibliographical note

Publisher Copyright:
© The author; licensee Universidad Nacional de Colombia.

Keywords

  • Failure twist angle
  • Flexural capacity
  • I-shaped beam
  • Lateral displacement
  • Lateral-torsional buckling
  • Laterally unbraced length
  • Longitudinal stiffeners

Types Minciencias

  • Artículos de investigación con calidad Q3

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