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Robustness assessment of a steel self-centering moment-resisting frame under column loss

Vasdravellis, G; Baiguera, M; Al-Sammaraie, D; (2018) Robustness assessment of a steel self-centering moment-resisting frame under column loss. Journal of Constructional Steel Research , 141 pp. 36-49. 10.1016/j.jcsr.2017.11.004. Green open access

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Abstract

The robustness of a seismically-designed steel self-centering moment-resisting frame (SCMRF) under a column loss scenario is numerically assessed. The prototype SC-MRF is equipped with post-tensioned bars and optimised stainless steel energy dissipation devices. The SC-MRF was modelled in full detail using solid finite elements. The numerical model was calibrated using results from previous tests on post-tensioned beam-column connections and isolated component tests on the energy dissipation devices. Quasi-static analyses were carried out to identify the failure modes of the SC-MRF under a column loss scenario. Nonlinear dynamic analyses were also performed to evaluate the dynamic response of the frame and to assess the acceptance criteria against progressive collapse according to the current codes of practice. The results show that the SC-MRF has superior robustness and it can guarantee a high level of safety under a sudden column loss scenario due to the high fracture capacity of the stainless steel energy dissipation devices and the tie force resistance provided by the post-tensioned bars.

Type: Article
Title: Robustness assessment of a steel self-centering moment-resisting frame under column loss
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.jcsr.2017.11.004
Publisher version: https://doi.org/10.1016/j.jcsr.2017.11.004
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10078812
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