Mechanical properties of cold-formed high strength steel at elevated temperatures

Hai Ting Li, Ben Young

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

Abstract

This paper presents the mechanical properties of cold-formed high strength steel at elevated temperatures. Mechanical properties at elevated temperatures have a crucial role in fire resistance design of steel structures. The fire resistances of steel structures in the existing international standards are mainly based on experimental data of hot-rolled mild steel. However, investigation of high strength steel at elevated temperatures is limited. Therefore, a test program has been carried out to investigate the mechanical properties of cold-formed high strength steel at elevated temperatures. The coupon specimens were extracted from cold-formed high strength steel square and rectangular hollow sections with nominal yield stresses of 700 and 900 MPa at ambient temperature. The coupon tests were carried out through steady state test method for temperatures up to 1000°C. Mechanical properties including elastic modulus, yield stress and ultimate strength were obtained from the tests. The test results were compared with the design values in the European, American, Australian and British standards. The comparison results revealed the necessity of proposing specified design rules for mechanical properties of cold-formed high strength steel at elevated temperatures.

Original languageEnglish
Title of host publicationInsights and Innovations in Structural Engineering, Mechanics and Computation - Proceedings of the 6th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2016
EditorsAlphose Zingoni
PublisherCRC Press/Balkema
Pages1022-1027
Number of pages6
ISBN (Print)9781138029279
Publication statusPublished - 1 Jan 2016
Externally publishedYes
Event6th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2016 - Cape Town, South Africa
Duration: 5 Sep 20167 Sep 2016

Publication series

NameInsights and Innovations in Structural Engineering, Mechanics and Computation - Proceedings of the 6th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2016

Conference

Conference6th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2016
CountrySouth Africa
CityCape Town
Period5/09/167/09/16

ASJC Scopus subject areas

  • Mechanical Engineering
  • Civil and Structural Engineering

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