Seismic fragility assessment of superelastic shape memory alloy reinforced concrete shear walls

Authors

Emad A. Abraik, Western University
Maged A. Youssef, Western UniversityFollow

Document Type

Article

Publication Date

2018

Journal

Journal of Building Engineering

Volume

19

First Page

142

URL with Digital Object Identifier

https://doi.org/10.1016/j.jobe.2018.05.009

Last Page

153

Creative Commons License

This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Abstract

Mitigation of seismic damage can be achieved through self-centering techniques. One of the potential techniques involves the use of Superelastic Shape Memory Alloy (SE-SMA) bars in Reinforced Concrete (RC) structures. This study explores the use of such bars in the plastic-hinge regions of RC walls. The seismic performance and vulnerability of SE‑SMA RC walls of ten- and twenty-story buildings are analytically assessed using fragility curves. The maximum inter-story drift, residual drift, and fragility are evaluated using multi strip analysis. The results clearly demonstrate the superior seismic performance of SE-SMA RC walls as compared to steel RC walls.