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dc.contributor.authorIbáñez Usach, Carmen
dc.contributor.authorBisby, L.
dc.contributor.authorRush, D.
dc.contributor.authorRomero, M.L.
dc.contributor.authorHospitaler, Antonio
dc.identifier.citationIbañez, C., et al. "Post-heating response of concrete-filled steel tubular columns under sustained loads." Structures. Elsevier, 2019ca_CA
dc.description.abstractConcrete-filled steel tubular (CFST) columns can generally be expected to better resist elevated temperatures as compared to unfilled steel hollow sections, whose evaluation after a fire is limited by the resulting deformation. A better understanding of the behaviour of CFST columns after a fire, which is dominated by the maximum temperature achieved by the concrete infill and plasticity of the steel, is required to properly estimate their residual strength and deformation and to adopt a reasonable strategy with minimum post-fire repair. In this paper, a fibre beam model for the simulation of the post-heating response of concrete- filled steel tubular (CFST) columns is presented. First, the model is validated against experimental results and subsequently it is employed to analyse the post-heating response of circular CFST columns under sustained loads. In reality, during a fire, the columns support load even during the cooling phase of a fire, so it is important to consider this loading condition when predicting the post-fire behaviour. The analysis presented in this paper comprises three stages: heating, cooling and post-fire (under sustained load) conditions. The model considers realistic features typical of the fire response of CFST columns, such as the existence of a gap conductance at the steel-concrete interface and the sliding and separation of the steel tube and the concrete. Based on the model, the response of CFST columns after heating is investigated via parametric analysis.ca_CA
dc.format.extent39 p.ca_CA
dc.relation.isPartOfStructures. Elsevier, 2019ca_CA
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.subjectpost-heating responseca_CA
dc.subjectresidual capacityca_CA
dc.subjectfibre beam modelca_CA
dc.subjectconcrete-filled steel tubular columnsca_CA
dc.titlePost-heating response of concrete-filled steel tubular columns under sustained loadsca_CA
dc.relation.projectIDThe authors gratefully acknowledge the financial support given by Universitat Jaume I (Spain) E-2018-18 and by Generalitat Valenciana (Spain) BEST/2017/141 for the first author's stays as a visiting fellow at the School of Engineering of the University of Edinburgh.ca_CA

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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internacional