Aljawhari, Karim;
Gentile, Roberto;
Galasso, Carmine;
(2022)
A fragility-oriented approach for seismic retrofit design.
Earthquake Spectra
10.1177/87552930221078324.
(In press).
Preview |
Text
Gentile_A fragility-oriented approach for seismic retrofit design_AOP.pdf - Published Version Download (2MB) | Preview |
Abstract
This study proposes a practical fragility-oriented approach for the seismic retrofit design of case-study structures. This approach relies on mapping the increase of the global displacement-based ratio of capacity to life-safety demand ( CDRLS) to the building-level fragility reduction. Specifically, the increase of CDRLS due to retrofitting is correlated with the corresponding shift in the fragility median values of multiple structure-specific damage states, observing that a pseudo-linear trend is appropriate under certain conditions. Accordingly, a practical approach is proposed to fit such a (structure-specific) linear trend and then use it by first specifying the desired fragility median and subsequently finding the corresponding target value of CDRLS that must be achieved through retrofit design. The validity of the proposed approach is illustrated for an archetype reinforced concrete (RC) structure not conforming to modern seismic design requirements, which has been retrofitted using various techniques, namely, fiber-reinforced polymers wrapping of columns and joints, RC jacketing, and steel jacketing.
| Type: | Article |
|---|---|
| Title: | A fragility-oriented approach for seismic retrofit design |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1177/87552930221078324 |
| Publisher version: | https://doi.org/10.1177/87552930221078324 |
| Language: | English |
| Additional information: | https://creativecommons.org/licenses/by-nc/4.0/This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage). |
| Keywords: | Seismic retrofit, fragility analysis, retrofit design, reinforced concrete, performance-based earthquake engineering |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Inst for Risk and Disaster Reduction UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10146466 |
Archive Staff Only
 |
View Item |
