Lateral buckling of beams with top bracing

Jong Sup Park, Young Jong Kang

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


This paper presents the lateral-torsional buckling (LTB) of beams or girders with continuous lateral support at top flange. Traditional moment gradient factors (Cb) given by AISC in LRFD Specification for Structural Steel Buildings and by AASHTO in LRFD Bridge Design Specifications were reviewed. Finite-element method buckling analyses of doubly symmetric I-shaped beams with continuous top bracing were conducted to develop new moment gradient factors. A uniformly distributed load was applied at midheight and either or both end moments were applied at the ends of beams. The proposed solutions are simple and accurate for use by engineers to determine the LTB resistance of beams.

Original languageEnglish
Pages (from-to)613-625
Number of pages13
JournalStructural Engineering and Mechanics
Issue number5
Publication statusPublished - 2003 Nov


  • Beam
  • Bracing
  • Buckling
  • Lateral stability
  • Stability analysis

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Mechanical Engineering


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