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토글 가새-고집적 마찰댐퍼를 설치한 철근콘크리트 모멘트 골조의 성능 평가

Seismic Behavior of Reinforced Concrete Moment Frames Retrofitted by Toggle Bracing System with High Density Friction Damper

  • 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)
  • 투고 : 2014.02.12
  • 심사 : 2014.04.08
  • 발행 : 2014.05.01

초록

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.

키워드

참고문헌

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