Performance assessment on high strength steel endplate connections after fire

Xuhong Qiang, N. Wu, Xu Jiang, Frans Bijlaard, Henk Kolstein

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
317 Downloads (Pure)

Abstract

Purpose – This study aims to reveal more information and understanding on performance and failure mechanisms of high strength steel endplate connections after fire. Design/methodology/approach – An experimental and numerical study on seven endplate connections after cooling down from fire temperature of 550°C has been carried out and reported herein. Moreover, the provisions of European design standard for steel structures, Eurocode 3, were validated with test results of high strength steel endplate connections. Findings – In endplate connections, a proper design using a thinner high strength steel endplate can achieve the same failure mode, similar residual load bearing capacity and comparable or even higher rotation capacity after cooling down from fire. It is found that high strength steel endplate connection can regain more than 90 per cent of its original load bearing capacity after cooling down from fire temperature of 550°C. Originality/value – The post-fire performance of high strength steel endplate connection has been reported. The accuracy of Eurocode 3 for endplate connections is validated against test results. Keywords Numerical study, Experimental study, High strength steel, After fire, Endplate connection

Original languageEnglish
Pages (from-to)202-214
JournalJournal of Structural Fire Engineering
Volume8
Issue number2
DOIs
Publication statusPublished - 2017

Keywords

  • Beam-to-column connections
  • Endplate connections
  • Fire condition
  • High strength steel
  • Structural fre performance

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