Ultimate Strength and Design of Lipped Channel Columns Experiencing Local/Distortional Mode Interaction - Part I: Experimental investigation

Ben Young, Dinar Camotim, Nuno Silvestre

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

10 Citations (Scopus)

Abstract

This paper reports the results of an experimental investigation aimed at assessing the post-buckling behaviour and ultimate strength of fixed-ended cold-formed steel lipped channel columns experiencing local/distortional mode interaction. A total of 26 columns were tested and the specimens were carefully selected to ensure various levels of local/distortional interaction effects (more or less close local and distortional critical stresses). The experimental results presented consist of the specimen geometries, material properties, initial imperfections, non-linear equilibrium paths and ultimate strength values. Since the collapse of most columns combines local and distortional deformations, these experimental results may be used to (i) assess the relevance of local/distortional interaction, (ii) calibrate and validate numerical simulations and (iii) provide experimental data aimed at developing a Direct Strength Method (DSM) approach to design cold-formed steel lipped channel columns against local/distortional interaction ? such a DSM approach is addressed in Part II of this paper.

Original languageEnglish
Title of host publicationICASS '09/IJSSD - Proceedings of Sixth International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics
Pages460-469
Number of pages10
Publication statusPublished - 1 Dec 2009
Externally publishedYes
Event6th International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics, ICASS 2009 - Hong Kong, China
Duration: 16 Dec 200918 Dec 2009

Publication series

NameICASS '09/IJSSD - Proceedings of Sixth International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics

Conference

Conference6th International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics, ICASS 2009
CountryChina
CityHong Kong
Period16/12/0918/12/09

Keywords

  • Cold-formed lipped channel columns
  • Experimental investigation
  • Highstrength steel
  • Initial geometrical imperfections
  • Local-distortional interaction
  • Mild steel
  • Ultimate strength

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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