Tests of cold-formed steel built-up open section beam-columns

Ben Young, Qiu Yun Li

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

In this study, an experimental program was conducted to investigate the buckling behaviour of cold-formed steel built-up open section members under combined axial load and bending. A total of 15 eccentrically loaded compression tests with varying initial moment-to-axial load ratio were carried out. The built-up open sections were consisted of two identical channels with both intermediate and edge stiffeners connected back-to-back using self-tapping screws. The channel sections were brake-pressed from zinc-coated grade G550 and G500 steel sheets with nominal thicknesses of 0.75 and 1.2 mm, respectively. The test specimens with nominal lengths of 300 and 900 mm were loaded under pin-ended boundary conditions. The test setup, experimental procedure, observed failure modes and test results are reported. The predicted strengths determined from the provisions specified in the North American Specification were compared with the strengths obtained from the tests. The predicted strengths are conservative for the built-up open section beam-columns.

Original languageEnglish
Title of host publicationAdvances in Engineering Materials, Structures and Systems
Subtitle of host publicationInnovations, Mechanics and Applications - Proceedings of the 7th International Conference on Structural Engineering, Mechanics and Computation, 2019
EditorsAlphose Zingoni
PublisherCRC Press/Balkema
Pages1077-1082
Number of pages6
ISBN (Print)9781138386969
DOIs
Publication statusPublished - 1 Jan 2019
Event7th International Conference on Structural Engineering, Mechanics and Computation, 2019 - Cape Town, South Africa
Duration: 2 Sep 20194 Sep 2019

Publication series

NameAdvances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications - Proceedings of the 7th International Conference on Structural Engineering, Mechanics and Computation, 2019

Conference

Conference7th International Conference on Structural Engineering, Mechanics and Computation, 2019
CountrySouth Africa
CityCape Town
Period2/09/194/09/19

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Computational Mechanics

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