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Collapse Mechanisms of Composite Slab Panels in Fire

1 Department of Civil and Natural Resources Engineering, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand
2 MDCI Concept Industry, 53-55 Rue du Capitaine Guynemer, 92400 Courbevoie, Paris, France
3 Department of Civil and Structural Engineering, University of Sheffield, Sir Frederick Mappin Building, Mappin Street, Sheffield S1 3JD, United Kingdom

Journal of Structural Fire Engineering

ISSN: 2040-2317

Article publication date: 30 August 2011



A simple folding mechanism, which considers the contributions of internal unprotected beams and protected edge beams, has been proposed for isolated slab panels in fire conditions. The current study extends the mechanism to include the reinforcement in the slab as well as continuity across the protected edge beams. Structural failure of the panel depends on the applied loads, the relative beam sizes, their locations within the building, their arrangement in the slab panel, the panel's location and the severity of fire exposure. These factors are considered in the development of a number of collapse mechanisms for verification so they may eventually serve as an additional check within the Bailey-BRE design method, to make it more robust for routine design of composite floors in fire. Comparisons are made with the finite element software Vulcan and other design acceptance criteria.



Abu, A., Ramanitrarivo, V. and Burgess, I. (2011), "Collapse Mechanisms of Composite Slab Panels in Fire", Journal of Structural Fire Engineering, Vol. 2 No. 3, pp. 205-216.



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