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The Influence of Travelling Fires on the Response of a Concrete Frame

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Original languageEnglish
Title of host publicationSTRUCTURES IN FIRE: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE
EditorsV Kodur, JM Franssen
Place of PublicationLANCASTER
PublisherDESTECH PUBLICATIONS, INC
Pages189-196
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

Abstract

Experimental and theoretical work, as well as real fires such as occurred in the Windsor tower and Tu Delft, show that compartment fires travel around the floor plate of structures. Despite this evidence, structural fire design almost without exception assumes uniform, single-curve design fires. This paper adopts an alternative methodology for studying the effect of fire on a concrete frame structure. The Oh floor (42 m by 28 m and 3.6 m high) of a nine storey building is analysed when subject to a variety of "travelling" design fires whose temperatures vary with space and time.

The structural effects on the frame of five travelling fires whose behaviour is based on fundamental fire dynamics are compared with the structural effects of uniformly distributed parametric fire and Standard Fire curves. Each part of the concrete frame is assessed using several different measures of structural behaviour for each fire scenario. The differences in the structural response for the multiple fires are then compared. Additionally, the structure is analysed after returning to ambient temperature for each fire scenario. This allows a residual-state analysis to be conducted on the structure. It is concluded that there are clear needs and benefits in using a travelling design fire as the basis for a comprehensive structural design.

Event

6th International Conference on Structures in Fire (SiF 10)

2/06/104/06/10

East Lansing

Event: Conference

ID: 1328844