Effect of Aspect Ratio on Fire Resistance of Hollow Core Concrete Floors (2010)
Type of ContentJournal Article
PublisherUniversity of Canterbury. Civil and Natural Resources Engineering
Several factors can affect the behaviour of the hollowcore floor slabs in fire. This paper analytically investigates the relationship between the fire resistance of the overall floor system and the floor length to width ratio as well as the type of side supports. The study uses beam grillage and shell elements to model the hollowcore slabs and the topping concrete under the platform of the non-linear finite element program, SAFIR. Different methods to model precast, prestressed concrete hollowcore floor slabs subjected to fire are also investigated. The results show that side supports can enhance the fire performance of hollowcore floor slabs provided that the spacing of the side supports does not greatly exceed the span length.
CitationChang, J., Dhakal, R.P., Moss, P., Buchanan, A. (2010) Effect of Aspect Ratio on Fire Resistance of Hollow Core Concrete Floors. Fire Technology, 46(1), pp. 201-216.
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Keywordshollowcore slab; SAFIR; computer simulation; aspect ratio; concrete floor
Showing items related by title, author, creator and subject.
Chang, J.; Moss, P.J.; Dhakal, Rajesh; Buchanan, A.H. (University of Canterbury. Civil and Natural Resources Engineering, 2008)Previous studies have shown that the fire performance of hollowcore units is significantly affected by the end support conditions, but it has not been clear how the fire resistance of the overall floor system can be ...
Sarkis Fernandez, Ana Isabel; Sullivan, Timothy; Brunesi, Emanuele; Nascimbene, Roberto (2019)Precast pre-stressed hollow-core (PPHC) floors have been historically designed and constructed in ways that jeopardize their seismic performance. Particularly, early use of PPHC floors in ductile frames had support connections ...
Chang, J.; Dhakal, Rajesh; Moss, P.J.; Buchanan, A.H. (University of Canterbury. Civil and Natural Resources Engineering, 2008)Precast prestressed hollow-core concrete flooring units are widely used in reinforced concrete moment-resisting frame buildings in New Zealand, yet their behaviour under fire has not received much attention. This is because ...