DOI QR코드

DOI QR Code

철골브레이스에 의한 기존 RC건축물의 강도상승형 내진보강을 위한 설계고려사항

The design considerations of steel braced frame for seismic retrofit through increasing the lateral strength of existing RC buildings

  • 안충원 (한국시설안전공단 건축실) ;
  • 윤정환 (한국시설안전공단 건축실) ;
  • 송동엽 (한국시설안전공단 건축실) ;
  • 장범수 (한국시설안전공단 시설안전연구소) ;
  • 민찬기 (한국시설안전공단 시설안전연구소)
  • 투고 : 2013.08.20
  • 심사 : 2013.10.08
  • 발행 : 2013.11.01

초록

This paper deals with steel braced frame as increasing the lateral strength and ductility in order to seismic retrofit of existing buildings and discusses the designing criteria and calculation method of retrofitted buildings. The addition of steel braced frame can be effective for increasing the lateral strength and ductility of existing buildings. However, There is a problem in utilizing this method. It is the approach to provide an adequate connection between the existing RC frame and the installed steel braced frame, because global strength by failure mode(three type) depends on detail of connection and strength of existing RC frame. So, the designer must be confirmed if it satisfies the required performance or not. Failure mode of type I is the most appropriate for increasing the lateral strength and ductility. Seismic performance evaluation and strength calculation of seismic retrofit are performed by guideline by KISTEC(Korea Infrastructure Safety & Technology)'s "seismic performance evaluation and rehabilitation of existing buildings" and Japan Building Disaster Prevention Association. Buildings are modeled and non-linear pushover analysis are performed using MIDAS program.

키워드

참고문헌

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피인용 문헌

  1. Influence of Joint on Retrofitting Effect by Exterior Steel Frames of Existing RC Buildings vol.19, pp.4, 2015, https://doi.org/10.5000/EESK.2015.19.4.183