Earthquakes and Structures

  • 제13권5호
  • /
  • Pages.443-454
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  • 2017
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Performance-based seismic design of eccentrically braced steel frames using target drift and failure mode

  • Li, Shen (School of Civil Engineering and architecture, Xi'an University of Technology) ;
  • Tian, Jian-bo (School of Civil Engineering and architecture, Xi'an University of Technology) ;
  • Liu, Yun-he (School of Civil Engineering and architecture, Xi'an University of Technology)
  • 투고 : 2017.04.11
  • 심사 : 2017.12.08
  • 발행 : 2017.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

When eccentrically braced steel frames (EBFs) are in the desired failure mode, links yield at each layer and column bases appear plastically hinged. Traditional design methods cannot accurately predict the inelastic behavior of structures owing to the use of capacity-based design theory. This paper proposes the use of performance-based seismic design (PBSD) method for planning eccentrically braced frames. PBSD can predict and control inelastic deformation of structures by target drift and failure mode. In buildings designed via this process, all links dissipate energy in the rare event of an earthquake, while other members remain in elastic state, and as the story drift is uniform along the structure height, weak layers will be avoided. In this condition, eccentrically braced frames may be more easily rehabilitated after the effects of an earthquake. The effectiveness of the proposed method is illustrated through a sample case study of ten-story K-type EBFs and Y- type EBFs buildings, and is validated by pushover analysis and dynamic analysis. The ultimate state of frames designed by the proposed method will fail in the desired failure mode. That is, inelastic deformation of structure mainly occurs in links; each layer of links involved dissipates energy, and weak layers do not exist in the structure. The PBSD method can provide a reference for structural design of eccentrically braced steel frames.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

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피인용 문헌

  1. Experimental Research and Theoretical Analysis of the Seismic Behavior of Prefabricated Semirigid Steel Frame with X-Shaped Braces vol.2019, pp.None, 2017, https://doi.org/10.1155/2019/6857683