Required bracing stiffness on lateral buckling strength for H-shaped beams with bracings

Yoshihiro Kimura, Y. Yoshino

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Lateral bracings are usually set to upper flanges of H-shaped beams in moment resisting frames, and then the stress of the braced flange may become tensile. If the bracings are connected to the tensile flange of H-shaped beams, its lateral buckling strength is more increased than that without bracing. The bracing connected to a tensile flange must restrain torsion to increase the lateral buckling strength of the beams. In this paper, the elastic lateral buckling load of H-shaped beams is developed with the energy method, and the relationship between the lateral buckling load and bracing rigidity is clarified. Bracing rigidities are lateral and rotational rigidities. The required bracing rigidity is suggested from two equations of the elastic lateral buckling load. Next, large deformation analyses are performed using ABAQUS with version 6.8, and the elasto-plastic lateral buckling behaviour for H-shaped beams with lateral and rotational bracings is presented. Also the buckling load is related with lateral and rotational bracings. Finally, the lateral buckling load for H-shaped beams with the required bracing rigidity is estimated with the modified equivalent slenderness ratio, and the elasto-plastic buckling stress is compared with the buckling curve for the Japanese standard code.

Original languageEnglish
Title of host publicationEarthquake Resistant Engineering Structures IX
Pages235-243
Number of pages9
DOIs
Publication statusPublished - 2013 Nov 22
Event9th World Conference on Earthquake Resistant Engineering Structures, ERES 2013 - A Coruna, Spain
Duration: 2013 Jul 82013 Jul 10

Publication series

NameWIT Transactions on the Built Environment
Volume132
ISSN (Print)1743-3509

Other

Other9th World Conference on Earthquake Resistant Engineering Structures, ERES 2013
CountrySpain
CityA Coruna
Period13/7/813/7/10

Keywords

  • Bracing stiffness
  • Lateral buckling H-shaped beam

ASJC Scopus subject areas

  • Architecture
  • Civil and Structural Engineering
  • Building and Construction
  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Arts and Humanities (miscellaneous)
  • Transportation
  • Safety Research
  • Computer Science Applications

Fingerprint Dive into the research topics of 'Required bracing stiffness on lateral buckling strength for H-shaped beams with bracings'. Together they form a unique fingerprint.

Cite this