Design of cold-formed steel lipped channel columns at elevated temperatures

Ju Chen, Ben Young

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

2 Citations (Scopus)

Abstract

The main objective of this paper is to study the behaviour and design of cold-formed steel lipped channel columns at elevated temperatures using finite element analysis. The effects of initial local and overall geometric imperfections have been taken into consideration in the analysis. The finite element analysis was performed on lipped channel columns compressed between fixed ends over a range of column lengths for various temperatures. The nonlinear finite element model was verified against experimental results of lipped channel columns at normal room temperature and elevated temperatures. Two series of columns were studied using finite element analysis to investigate the strength and behaviour of lipped channel columns at elevated temperatures. The column strengths predicted from the finite element analysis were compared with the design strengths calculated using the effective width and direct strength methods by substituting the reduced material properties. It should be noted that the current effective width and direct strength methods are developed based on cold-formed steel structural members at normal room temperature. In this study, the suitability of the effective width and direct strength methods for cold-formed steel lipped channel columns at elevated temperatures is investigated. It is shown that the effective width and direct strength methods are able to predict the cold-formed steel lipped channel column strengths at elevated temperatures.

Original languageEnglish
Title of host publicationProceedings of the International Colloquium on Stability and Ductility of Steel Structures, Lisbon, Portugal
Pages737-746
Number of pages10
Publication statusPublished - 1 Dec 2006
Externally publishedYes
EventInternational Colloquium on Stability and Ductility of Steel Structures, SDSS 2006 - Lisbon, Portugal
Duration: 6 Sep 20068 Sep 2006

Conference

ConferenceInternational Colloquium on Stability and Ductility of Steel Structures, SDSS 2006
CountryPortugal
CityLisbon
Period6/09/068/09/06

Keywords

  • Cold-formed steel
  • Elevated temperatures
  • Fire resistant design
  • Lipped channel column

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality
  • Building and Construction

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