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Probabilistic performance assessment of low ductility r.c. frames retrofitted by elasto-plastic braces

Freddi, F; Tubaldi, E; Ragni, L; Dall'Asta, A; (2010) Probabilistic performance assessment of low ductility r.c. frames retrofitted by elasto-plastic braces. In: Proceedings of the 14th European Conference on Earthquake Engineering ECEE 2010. ECEE: Ohrid, Republic of Macedonia. Green open access

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Abstract

This study aims at evaluating, by means of a probabilistic approach, the effectiveness of dissipative braces based on elasto-plastic devices in reducing the vulnerability of existing reinforced concrete buildings designed before the introduction of modern anti-seismic codes. A benchmark 2-dimensional reinforced concrete frame whit low ductility capacity is considered as case study. The dissipative braces are designed for different levels of the target shear capacity assigned to the bracing system, following a design method involving the pushover analysis of the bare frame. The probabilistic seismic response and vulnerability of the structure are investigated by building fragility curves of the system and of its most vulnerable components.

Type: Proceedings paper
Title: Probabilistic performance assessment of low ductility r.c. frames retrofitted by elasto-plastic braces
Event: 14th European Conference on Earthquake Engineering ECEE 2010
Location: Ohrid, Republic of Macedonia
Dates: 30 August 2010 - 03 September 2010
Open access status: An open access version is available from UCL Discovery
Publisher version: http://www.14ecee.mk/
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Vulnerability of low ductility r.c. frames, seismic retrofit, fragility curves, elasto-plastic devices.
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/1575830
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