Verification of code fire ratings of precast prestressed concrete slabs (2012)
Type of ContentConference Contributions - Published
PublisherUniversity of Canterbury. Civil and Natural Resources Engineering
AuthorsMin, J-K., Abu, A.K., Moss, P.J., Dhakal, R.P., Buchanan, A.H.show all
In fire design for floors, the three criteria of stability, integrity and insulation are required for the specified fire resistance duration. Among these, stability is not easy to confirm. For solid prestressed concrete slabs of uniform thickness, Eurocode 2 provides tabulated data and specifies an axis distance to the centroid of strands to achieve particular fire resistance ratings, but it is not clear if this data can be used for a wide range of different prestressed slab profiles. In order to verify the current code-fire ratings for precast prestressed slabs, both simple and advanced calculation methods are investigated. This paper examines use of calculation methods, accounting for the real behaviour of unprotected simply supported prestressed concrete slabs exposed to the standard ISO 834 fire. The calculated fire resistance of each prestressed concrete slab is compared with tabulated data in Eurocode part 1.2, with detailed discussion.
CitationMin, J-K., Abu, A.K., Moss, P.J., Dhakal, R.P., Buchanan, A.H. (2012) Verification of code fire ratings of precast prestressed concrete slabs. Zurich, Switzerland: 7th International Conference on Structures in Fire (SiF), 6-8 Jun 2012. SiF2012, 679-688.
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Keywordsprecast concrete; simple calculation models; advanced calculation methods
ANZSRC Fields of Research09 - Engineering::0905 - Civil Engineering::090506 - Structural Engineering
09 - Engineering::0905 - Civil Engineering::090599 - Civil Engineering not elsewhere classified