Screwed connection tests of light gauge steel at elevated temperatures

S. Yan, B. Young

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

Abstract

The current design rules on screwed connections of light gauge steel for cold-formed steel structures are applicable for ambient temperature condition only. Investigation of screwed connections at elevated temperatures is limited. In this study, 27 single shear screwed connection specimens fabricated from G500 1.20 mm and G450 1.90 mm light gauge steels were conducted by using steady state test method in the temperature range from 22°C to 900°C. The coupon test results were compared with the predicted values calculated from the equations proposed by Chen and Young. Tilting and bearing failure mode was observed in the single shear screwed connection tests. The test results were compared with the predicted strengths calculated using the North American, Australian/New Zealand and European specifications for cold-formed steel structures. The reduced material properties were used in calculating the nominal strengths of the screwed connections due to the deterioration of material at elevated temperatures. It is shown that the strengths of the single shear screwed connections predicted by the specifications are generally conservative at elevated temperatures.

Original languageEnglish
Title of host publicationProceedings of the 7th International Conference on Advances in Steel Structures, ICASS 2012
EditorsS.L. Chan, G.P. Shu
PublisherSoutheast University Press
Pages846-855
Number of pages10
ISBN (Electronic)9787564134006
Publication statusPublished - 16 Apr 2012
Externally publishedYes
Event7th International Conference on Advances in Steel Structures, ICASS 2012 - Nanjing, China
Duration: 14 Apr 201216 Apr 2012

Publication series

NameProceedings of the 7th International Conference on Advances in Steel Structures, ICASS 2012
Volume2

Conference

Conference7th International Conference on Advances in Steel Structures, ICASS 2012
CountryChina
CityNanjing
Period14/04/1216/04/12

Keywords

  • Elevated temperature
  • Failure mode
  • Light gauge steel
  • Material properties
  • Screwed connection
  • Steady state test
  • Ultimate strength

ASJC Scopus subject areas

  • Metals and Alloys
  • Civil and Structural Engineering

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