Lateral buckling formula of stepped beams with continuous bracing

Jong S. Park, J. Michael Stallings, Young J. Kang

Research output: Contribution to conferencePaperpeer-review

Abstract

Lateral-torsional buckling moment resistances of I-shaped stepped beams with continuous lateral top-flange bracing were investigated. Stepped beam factors and moment gradient correction factors were used to develop new lateral buckling formula for beam designs. From the investigation of finite element analysis, new lateral buckling formula of beams with singly or doubly stepped member changes and with continuous lateral top-flange bracing subjected to general loading were developed. The new design equation includes the length-to-height ratio factor to account for the increase of lateral-torsional buckling moment resistance as the increase of length-to-height ratio of stepped beams. The calculation examples for obtaining lateral-torsional buckling moment resistance using the new design equation indicate that engineers should easily determine the buckling capacity of the stepped beam.

Original languageEnglish
Pages315-322
Number of pages8
Publication statusPublished - 2006
EventInternational Colloquium on Stability and Ductility of Steel Structures, SDSS 2006 - Lisbon, Portugal
Duration: 2006 Sep 62006 Sep 8

Other

OtherInternational Colloquium on Stability and Ductility of Steel Structures, SDSS 2006
CountryPortugal
CityLisbon
Period06/9/606/9/8

Keywords

  • Beam design
  • Buckling
  • Stability
  • Stepped beam

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality
  • Building and Construction

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