Prelimanary Investigation of SMA-Based Recentering Beam-Column Connection

Abstract eng:
The conception, design, test setup, and predicted behavior of a SMA-based recentering beam-column connection are presented. Since the 1994 Northridge earthquake, many different research initiatives have been undertaken to create connections that have more robust performance under seismic loads. Numerous vulnerabilities in fully restrained connections resulted in the re-evaluation of their partially restrained counterpart (i.e. bolted connections). This reevaluation has shown that properly detailed partially restrained connections have good seismic performance. The SMA-based partially restrained connection proposed in this research has the potential to create a connection with good strength, stiffness, and ductility. The key benefit to such a system is the superelastic SMA’s ability to recenter the connection at the end of a loading event.

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