Structural Engineering and Mechanics

  • 제61권6호
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  • Pages.755-763
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  • 2017
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Progressive collapse analysis of buildings with concentric and eccentric braced frames

  • 투고 : 2015.06.11
  • 심사 : 2016.11.23
  • 발행 : 2017.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

In this study, the susceptibility of different symmetric steel buildings with dual frame system to Progressive Collapse (PC) was assessed. Some ten-story dual frame systems with different type of braced frames (concentrically and eccentrically braced frames) were considered. In addition, numbers and locations of braced bays were investigated (two and three braced bays in exterior frames) to quantitatively find out its effect on PC resistance. An Alternate Path Method (APM) with a linear static analysis was carried out based on General Services Administration (GSA 2003) guidelines. Maximum Demand Capacity Ratio (DCR) for the elements (beams and columns) with highest DCRs ($DCR_{moment}$ and $DCR_{shear}$) is given in tables. The results showed that the three braced bays with concentric braced frames especially X-braced and inverted V-braced frame systems had a lower susceptibility and greater resistance to PC. Also, the results represented that the beams were more critical than columns against PC after the removal of column.

키워드

참고문헌

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피인용 문헌

  1. Seismic progressive collapse mitigation of buildings using cylindrical friction damper vol.20, pp.1, 2021, https://doi.org/10.12989/eas.2021.20.1.001