Ultimate behavior of idealized composite floor elements at ambient and elevated temperature

K. A. Cashell, A. Y. Elghazouli, B. A. Izzuddin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

6 Citations (Scopus)

Abstract

This paper is concerned with the ultimate behavior of composite floor slabs under extreme loading situations resembling those occurring during severe building fires. The study focuses on the failure state associated with rupture of the reinforcement in idealized slab elements, which become lightly reinforced in a fire situation due to the early loss of the steel deck. The paper describes a fundamental approach for assessing the failure limit associated with reinforcement fracture in lightly reinforced beams, representing idealized slab strips. A description of the ambient-temperature tests on isolated restrained elements, carried out to assess the influence of key material parameters on the failure conditions, is firstly presented. The results of a series of material tests, undertaken mainly to examine the effect of elevated temperature on ductility, are also described. A simplified analytical model is employed, in conjunction with the experimental findings, to assess the salient material parameters and their implications on the ultimate response at both ambient and elevated temperature.

Original languageEnglish
Pages (from-to)67-89
Number of pages23
JournalFire Technology
Volume46
Issue number1
DOIs
Publication statusPublished - 2010

Keywords

  • Composite floors
  • Failure conditions
  • Slab strips
  • Structural fire behavior

ASJC Scopus subject areas

  • General Materials Science
  • Safety, Risk, Reliability and Quality

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