Behaviour of steel frames under fire conditions

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Journal titleCanadian Journal of Civil Engineering
Pages156167; # of pages: 12
SubjectPerformance of:
AbstractA state-of-the-art review of the behaviour of steel frame structures in fire is presented. Results from differentstudies indicate that the behaviour of a complete structure is different from that of a single structural member under fire conditions from the point of view of fire resistance. Earlier studies also show that analysis and design of steel structures against fire based on their overall behaviour could lead to a reduction or the elimination of applied fire protection to certain structural members. The effects of continuity, restraint conditions, and load ratio on the fire resistance of frame structures are discussed. The beneficial aspects derived from considering overall structural rather than single-member behaviour in fire are illustrated through the analysis on two one-bay, one-storey, unprotected steel portal frames, a column, and a beam. Also comparison is made between the performance of a beam with different end restraints in fire. Results from the analyses indicate that the fire resistance of a member is increased when it is considered as part of a structure compared with when it is considered as a single member.
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AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number41506
NPARC number20338064
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Record identifier395f13ac-5ffd-4ada-ac8c-50d058797860
Record created2012-07-19
Record modified2016-05-09
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