Post-heating response of concrete-filled steel tubular columns under sustained loads
View/ Open
Impact
Scholar |
Other documents of the author: Ibáñez Usach, Carmen; Bisby, L.; Rush, D.; Romero, M.L.; Hospitaler, Antonio
Metadata
Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7035
comunitat-uji-handle3:10234/8617
comunitat-uji-handle4:
INVESTIGACIONMetadata
Title
Post-heating response of concrete-filled steel tubular columns under sustained loadsDate
2019-04-29Publisher
ElsevierISSN
2352-0124Bibliographic citation
Ibañez, C., et al. "Post-heating response of concrete-filled steel tubular columns under sustained loads." Structures. Elsevier, 2019Type
info:eu-repo/semantics/articlePublisher version
https://www.sciencedirect.com/science/article/pii/S2352012419300669Version
info:eu-repo/semantics/acceptedVersionSubject
Abstract
Concrete-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 ... [+]
Concrete-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. [-]
Is part of
Structures. Elsevier, 2019Investigation project
The 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.Rights
info:eu-repo/semantics/openAccess
This item appears in the folowing collection(s)
- EMC_Articles [806]
The following license files are associated with this item: