Local buckling resistances of cold-formed high-strength steel SHS and RHS with varying corner radius

Lu Yang, Fei Yin, Jie Wang, Azrat Bilal, Ari Habeeb Ahmed, Manfang Lin

Research output: Contribution to journalArticlepeer-review

Abstract

This paper reports an experimental and numerical study of the cross-sectional behaviour of cold-formed high-strength steel (HSS) square and rectangular hollow section (SHS and RHS) members. Six stub column tests, six 3-point and three 4-point bending tests have been carried out, followed by the development of accurate finite element (FE) models and a parametric study. Based on the test and FE results, the design rules for slender cross-sections in European, American, Australian and Chinese standards and the GSRM method have been assessed via reliability analyses. A new equation for deriving the cross-sectional slenderness of SHS and RHS considering the influence of corner radius and new area reduction factors for designing slender cold-formed S900 (and above) SHS and RHS have also been proposed
Original languageEnglish
Article number108909
JournalThin-Walled Structures
Volume172
Early online date29 Jan 2022
DOIs
Publication statusPublished - 31 Mar 2022

Keywords

  • 3-point bending tests
  • 4-point bending tests
  • Cold-formed steel structures
  • Effect of corner radius
  • High strength steels
  • Local buckling
  • Square and rectangular hollow sections (SHS and RHS)
  • Stub column tests

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanical Engineering

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