Fire behaviour of high strength self-consolidating concrete filled steel tubular stub columns

Hui Lu, Xiao Ling Zhao, Lin Hai Han

Research output: Journal article publicationJournal articleAcademic researchpeer-review

96 Citations (Scopus)

Abstract

This paper reports an investigation into the behaviour of high strength SCC (self-consolidating concrete) filled steel tubular stub columns exposed to standard fire. A series of tests were carried out to obtain the temperature distribution, axial deformation, limiting temperature of steel and fire endurance of the SCC filled steel tubular stub columns. In addition, a finite element analysis (FEA) model was proposed and used to simulate the fire behaviour of the columns. In the FEA modeling, a sensitivity study was conducted to determine the concrete fracture energy and the contact property of the steel and concrete interface. The verified FEA model was used to analyse the structural behaviour of the columns under fire exposure, such as strain, stress, the load sharing between the steel tube and concrete and local buckling of the steel tube, to gain an insight into the failure mechanism of the columns.

Original languageEnglish
Pages (from-to)1995-2010
Number of pages16
JournalJournal of Constructional Steel Research
Volume65
Issue number10-11
DOIs
Publication statusPublished - Oct 2009
Externally publishedYes

Keywords

  • Concrete filled steel tube
  • Finite element analysis (FEA)
  • Fire resistance
  • High strength concrete
  • Self-consolidating concrete (SCC)

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Metals and Alloys

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