Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Performance Test and Numerical Model Development of Restoring Viscous Damper for X-type Damper System

X형 감쇠시스템을 위한 복원성 점성 감쇠기 성능 실험 및 수치모형 개발

  • Kim, David (Department of Architectural Engineering, Dongguk University) ;
  • Park, Jangho (Department of Civil System Engineering, Ajou University) ;
  • Ok, Seung-Yong (Department of Civil, Safety & Environmental Engineering, Hankyong National University) ;
  • Park, Wonsuk (Department of Civil Engineering, Mokpo National University)
  • 김다위 (동국대학교 건축공학과) ;
  • 박장호 (아주대학교 건설시스템공학과) ;
  • 옥승용 (한경대학교 토목안전환경공학과) ;
  • 박원석 (목포대학교 토목공학과)
  • Received : 2016.08.10
  • Accepted : 2016.12.01
  • Published : 2016.12.31
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Abstract

In this study, a restoring viscous damper is introduced for X-type damper system which is designed for the seismic response control of large spatial structures. A nonlinear numerical model for its behavior is developed using the result of dynamic loading tests. The X-type damper system is composed of restoring viscous dampers and connecting devices such as adjustable wire bracing, where the damping capacity of the system is controllable by changing the number of the dampers. The restoring viscous damper is devised to exert main damping force in tension direction, which is effective to prevent the buckling of bracing subjected to compressive axial force. To evaluate the performance of the proposed damper, dynamic cyclic loading tests are performed by using manufactured dampers at full scale. In order to construct the numerical model of the damper system, its model parameters are first identified using a nonlinear curve fitting method with the test data. The numerical simulations are then performed to validate the accuracy of the numerical model in comparison with the experimental test results. It is expected that the proposed system is effectively applicable to various building structures for seismic performance enhancement.

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References

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