Structural Engineering and Mechanics

  • 제44권5호
  • /
  • Pages.611-631
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  • 2012
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

A simplified design procedure for seismic retrofit of earthquake-damaged RC frames with viscous dampers

  • Weng, D.G. (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University) ;
  • Zhang, C. (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University) ;
  • Lu, X.L. (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University) ;
  • Zeng, S. (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University) ;
  • Zhang, S.M. (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University)
  • 투고 : 2011.07.03
  • 심사 : 2012.10.27
  • 발행 : 2012.12.10
⟨ 이전 논문 다음 논문 ⟩

초록

The passive energy dissipation technology has been proven to be reliable and robust for recent practical applications. Various dampers or energy dissipation devices have been widely used in building structures for enhancing their performances during earthquakes, windstorm and other severe loading scenarios. This paper presents a simplified seismic design procedure for retrofitting earthquake-damaged frames with viscous dampers. With the scheme of designing the main frame and the supplemental viscous dampers respectively, the seismic analysis model of damped structure with viscous dampers and braces was studied. The specific analysis process was described and approach to parameter design of energy dissipation components was also proposed. The expected damping forces for damped frame were first obtained based on storey shear forces; and then they were optimized to meet different storey drift requirements. A retrofit project of a RC frame school building damaged in the 2008 Wenchuan earthquake was introduced as a case study. This building was retrofitted by using viscous dampers designed through the simplified design procedure proposed in this paper. Based on the case study, it is concluded that this simplified design procedure can be effectively used to make seismic retrofit design of earthquake-damaged RC frames with viscous dampers, so as to achieve structural performance objectives under different earthquake risk levels.

키워드

참고문헌

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