Experimental Investigation on Stub-Column Behavior of Cold-Formed High-Strength Steel Tubular Sections

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Abstract

This paper presents the experimental investigation on the compressive behavior of cold-formed high-strength steel tubular stub columns. In this paper, the nominal 0.2% proof stress of the high-strength steel was 700, 900, and 1,100 MPa. A total of 25 stub column tests on circular, rectangular, and square hollow structural sections were conducted. Geometric imperfections and load-deformation histories were reported and assessed. The experimental results were compared against the design values calculated from the Australian, European, and North American codes, and the corresponding compactness criteria were assessed. A finite-element model, which incorporated the varying material properties, was described, and the influence of geometric and material imperfections was also evaluated. The finite-element results successfully captured the experimental observations and can be adopted for future parametric studies.
Original languageEnglish
Article number04015174
JournalJournal of Structural Engineering (United States)
Volume142
Issue number5
DOIs
Publication statusPublished - 1 May 2016

Keywords

  • Cold-formed steel
  • Finite element
  • Geometric imperfection
  • High-strength steel
  • Metal and composite structures
  • Residual stress
  • Stub column
  • Tubular section

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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