Design of a bracing-friction damper system for seismic retrofitting

Sung-Kyung Lee

Department of Architectural Engineering, Dankook University, Seoul, Korea

Ji-Hun Park

Department of Architectural Engineering, University of Incheon, Incheon, Korea

Byoung-Wook Moon, Kyung-Won Min* and Sang-Hyun Lee

Department of Architectural Engineering, Dankook University, Seoul, Korea

Jinkoo Kim

Department of Architectural Engineering, Sungkyunkwan University, Korea

(Received March 20, 2007, Accepted December 11, 2007)

Abstract: This paper deals with the numerical model of a bracing-friction damper system and its deployment

using the optimal slip load distribution for the seismic retrofitting of a damaged building. The Slotted Bolted

Connection (SBC) type friction damper system was tested to investigate its energy dissipation characteristic. Test results coincided with the numerical ones using the conventional model of a bracing-friction damper system. The placement of this device was numerically explored to apply it to the assumed damaged-building and to evaluate its efficiency. It was found by distributing the slip load that minimizes the given performance indicies based on structural response. Numerical results for the damaged building retrofitted with this slip load distribution showed that the seismic design of the bracing-friction damper system under consideration is effective for the structural response reduction.

Key words: bracing-friction damper system; slotted bolted connection type; slip load distribution; damaged

building.