DEFORMATION AND RESPONSE OF CONTINUOUS AND RESTRAINED POST-TENSIONED CONCRETE SLABS AT HIGH TEMPERATURES

John Gales, Luke Bisby

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The improvement of modelling capabilities that could enable defensible performance based structural fire design of post-tensioned (PT) concrete buildings requires detailed validation data from densely instrumented experiments that incorporate as many of the relevant structural properties of as- built construction as possible. Experiments are presented on three 3-span continuous, restrained PT concrete slab strips under sustained service loading and exposed to severe localised heating under constant incident heat flux. A similar yet highly complex deflection response to high temperature is presented for all three slabs. The possible physical mechanisms responsible for the observed complex high temperature deformation response are presented and discussed. The overarching objective is to help steer future research for the development of rational fire safety strategies for PT concrete (and reinforced concrete) buildings by interrogating these systems’ real behaviour in realistic fire scenarios.
Original languageEnglish
Title of host publication8th International Conference on Structures in Fire
Place of PublicationShanghai
PublisherTongji University Press
Pages305-312
Volume1
ISBN (Print)978-7-5608-5494-6
Publication statusPublished - 1 Jun 2014

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