Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Seismic Behavior of Reinforced Concrete Moment Frames Retrofitted by Toggle Bracing System with High Density Friction Damper

토글 가새-고집적 마찰댐퍼를 설치한 철근콘크리트 모멘트 골조의 성능 평가

  • Han, Sang Whan (Department of Architectural Engineering, Hanyang University) ;
  • Kim, Ji Yeong (Department of Architectural Engineering, Hanyang University) ;
  • Moon, Ki Hoon (Department of Architectural Engineering, Hanyang University) ;
  • Lee, Chang Seok (Department of Architectural Engineering, Hanyang University) ;
  • Kim, Hyung Joon (Department of Architectural Engineering, University of Seoul) ;
  • Lee, Kang Seok (Department of Architecture, Chonnam National University)
  • Received : 2014.02.12
  • Accepted : 2014.04.08
  • Published : 2014.05.01
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Abstract

The friction damper can be used for improving the seismic resistance of existing buildings. The damper is often installed in bracing members. The energy dissipation capacity of the damping systems depends on the type of the structure, the configuration of the bracing members, and the property of dampers. In Korea, there are numerous low- to mid-rise reinforced concrete moment frames that were constructed considering only gravity loads. Those frames may be vulnerable for future earthquakes. To resolve the problem, this study developed a toggle bracing system with a high density friction damper. To investigate the improvement of reinforced concrete frames after retrofit using the developed damped system, experimental tests were conducted on frame specimens with and without the damped system. The results showed that the maximum strength, initial stiffness and energy dissipation capacity of the framed with the damped system were much larger than those of the frame without the damped system.

Keywords

References

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