To read the full version of this content please select one of the options below:

Modelling the Fire Resistance of Prestressed Concrete Floors using Multi-Spring Connection Elements

1 Department of Civil & Natural Resources Engineering, University of Canterbury, Private Bag 4800, Christchurch, New Zealand

Journal of Structural Fire Engineering

ISSN: 2040-2317

Article publication date: 23 March 2012

Abstract

The fire resistance of precast prestressed concrete floor systems is heavily influenced by the end connections and the stiffness of the surrounding structure, both of which must be considered in any analysis. Analysing floor slabs with beam or shell elements whose end nodes share the nodes of supporting beams leads to a major problem for precast prestressed flooring systems where the steel tendons terminate at the end of the flooring units, because the approach of sharing nodes of the supporting beam and floor assumes that these tendons are anchored into the supporting beams. In order to solve this problem, a "multi-spring" connection element has been developed. Experimental data available from previous research work has been used to validate the finite element model. It is concluded that the inclusion of the multi-spring connection results in more accurate predictions of prestressed hollowcore slab behaviour in fire conditions.

Keywords

Citation

Min, J.-K., Dhakal, R., Moss, P., Buchanan, A. and Abu, A. (2012), "Modelling the Fire Resistance of Prestressed Concrete Floors using Multi-Spring Connection Elements", Journal of Structural Fire Engineering, Vol. 3 No. 1, pp. 1-18. https://doi.org/10.1260/2040-2317.3.1.1

Publisher

:

Emerald Group Publishing Limited