Techno Press

Steel and Composite Structures   Volume 29, Number 3, November10 2018, pages 287-299
Seismic retrofit of a framed structure using damped cable systems
Asad Naeem and Jinkoo Kim

Abstract     [Full Text]
    The purpose of this study is to investigate the effectiveness of damped cable systems (DCS) to mitigate the earthquake-induced responses of a building frame structure. The seismic performance of the DCS is investigated using the fragility analysis and life cycle cost evaluation of an existing building retrofitted with the DCS, and the results are compared with the structure retrofitted with conventional fluid viscous dampers. The comparison of the analysis results reveals that, due to the self-centering capability of the DCS, residual displacement approximately reaches to zero for the structure retrofitted with the DCS. The fragility analysis shows that the structure retrofitted with the DCS has the least probability of reaching the specific limit states compared to the bare structure and the structure with the conventional fluid viscous damper (VD), especially under the severe ground motions. It is also observed that both the initial and the life cycle costs of the DCS seismic retrofitting technique is lesser compare to the structure retrofitted with the VD.
Key Words
    damped cable system; fragility analysis; life cycle cost; seismic retrofit; self-centering
Department of Civil Engineering and Architectural Engineering, Sungkyunkwan University, Suwon, Republic of Korea.

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