Stability of RC Structure Under Non-Uniform Thermal Exposure

S. Deeny, T. Stratford

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper investigates the effect of a uniform temperature design fire assumption upon structural response. The structural behaviour when exposed to the non-uniform gas temperatures above a fire plume (the Alpert correlation [I]) is compared with the structural behaviour when exposed to uniform gas temperature, using either the average or maximum of the non-uniform gas temperatures. A two-way spanning reinforced concrete slab is used as the test case. It is found that the non-uniform gas temperature distribution causes localised failures underestimated by the average gas temperature assumption. The maximum gas temperature assumption provides a conservative estimate of behaviour. The varied response elicited by differing assumptions concerning the thermal exposure highlights the need for an improved design philosophy for structures in fire.

Original languageEnglish
Title of host publicationSTRUCTURES IN FIRE: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE
EditorsV Kodur, JM Franssen
Place of PublicationLANCASTER
PublisherDESTECH PUBLICATIONS, INC
Pages270-277
Number of pages8
ISBN (Print)978-1-60595-027-3
Publication statusPublished - 2010
Event6th International Conference on Structures in Fire (SiF 10) - East Lansing
Duration: 2 Jun 20104 Jun 2010

Conference

Conference6th International Conference on Structures in Fire (SiF 10)
CityEast Lansing
Period2/06/104/06/10

Keywords

  • FIRE
  • BEHAVIOR

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