Freddi, F;
Ragni, L;
Tubaldi, E;
Dall'Asta, A;
(2012)
Probabilistic performance assessment of low-ductility RC frames retrofitted with dissipative braces.
In:
OpenSees Days Italia 2012 Conference Proceedings.
(pp. pp. 93-101).
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Abstract
The paper illustrates a probabilistic methodology for assessing the vulnerability of existing reinforced concrete (RC) buildings with limited ductility capacity retrofitted by dissipative braces. The aim is to highlight the most important parameters controlling the capacity of these coupled systems and specific aspects concerning the response uncertainties. The proposed methodology is based on the development of fragility curves by performing incremental dynamic analysis within OpenSees and on the use of local engineering demand parameters. The capabilities of the methodology are tested by considering a benchmark RC frame designed for gravity-loads only and retrofitted by introducing elasto-plastic dissipative braces. The results show the effectiveness of the methodology and of the employed simulation software in describing the change of failure modalities due to retrofit.
| Type: | Proceedings paper |
|---|---|
| Title: | Probabilistic performance assessment of low-ductility RC frames retrofitted with dissipative braces |
| Event: | OpenSees Days 2012 |
| Location: | Rome, Italy |
| Dates: | 24 May 2012 - 25 May 2012 |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | http://e-opensees.com/dissemination/ |
| 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. |
| Keywords: | Reinforced concrete frames, seismic vulnerability, fragility curves, seismic retrofit, buckling-restrained braces, probabilistic methodology |
| 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/1575834 |
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