Experimental and Numerical Investigation of a Disc-Spring Damage Avoidance Device in Self-Centering Slotted Beam Connections

ABSTRACT

During the past decade damage avoidance initiatives have attracted considerable attention among researchers and earthquake engineers. The paper proposes a Disc Spring Damage Avoidance Device which can practically be implemented in slotted beam connections. It comprises two distinct components for self-centering and energy dissipation. The components are tested under cyclic loading and the device performance in slotted concrete joints is validated using previous experimental and analytical results. Variation in system parameters is investigated using an improved analytical model. The results show that the device can mitigate the residual displacements down to zero while maintaining a reasonable level of energy dissipation.

KEYWORDS:

• Damage Avoidance Device
• Disc Spring
• Self Centering
• Slotted Beam Connection
• Residual Displacement

Acknowledgments

This study was financially supported by Urmia University. The experimental works were carried out in the Center for Crisis Management in Urmia University and the authors would like to acknowledge the technical support provided by the members of staff in this Center.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The work was supported by the Urmia University .