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Experiments on cyclic behaviour of cold-formed steel-rubberised concrete semi-rigid moment-resisting connections.

Bagheri Sabbagh, Alireza; Jafarifar, Naeimeh; Davidson, Paul; Ibrahimov, Kanan

Authors

Alireza Bagheri Sabbagh

Paul Davidson

Kanan Ibrahimov



Abstract

This paper presents the results of full-scale physical tests on a recently developed cold-formed steel (CFS) semi-rigid moment-resisting connection infilled with rubberised concrete (RuC) for seismic application. The connection comprises side-plates attached to both sides of built-up tubular CFS beam and column sections through either screwed or welded connections. The tests were performed on both bare steel and CFS-RuC composite connections under cyclic loading for comparison purposes. The predominant modes of failure are beam local buckling and side plate plasticity in the bare steel connections and screw shear failure in the composite connections. The results show that the composite connection typically reaches 45% higher strength and 21% greater energy dissipation capacity than the bare steel connection both having 24 screw arrays. These indicate the beneficial effects of the infill RuC in prevention of the beam local buckling in connections with identical connection configuration. The energy dissipation capacity of the bare steel connection having 36 screw arrays, however, was 70% greater than that of the composite connection with 24 screw arrays. This reflects side plate plasticity being a more effective energy dissipation mechanism than the other identified mechanisms.

Citation

BAGHERI SABBAGH, A., JAFARIFAR, N., DAVIDSON, P. and IBRAHIMOV, K. 2022. Experiments on cyclic behaviour of cold-formed steel-rubberised concrete semi-rigid moment-resisting connections. Engineering structures [online], 271, article 114956. Available from: https://doi.org/10.1016/j.engstruct.2022.114956

Journal Article Type Article
Acceptance Date Sep 9, 2022
Online Publication Date Sep 18, 2022
Publication Date Nov 15, 2022
Deposit Date Sep 27, 2022
Publicly Available Date Sep 27, 2022
Journal Engineering Structures
Print ISSN 0141-0296
Electronic ISSN 1873-7323
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 271
Article Number 114956
DOI https://doi.org/10.1016/j.engstruct.2022.114956
Keywords Cold-formed steel; Moment-resisting connections; Semi-rigid joints; Cyclic loading
Public URL https://rgu-repository.worktribe.com/output/1764210

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