Earthquakes and Structures

  • 제9권3호
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  • Pages.563-576
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  • 2015
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Effect of MDOF structures' optimal dampers on seismic fragility of piping

  • Jung, Woo Young (Department of Civil Engineering, GangNeung-WonJu National University) ;
  • Ju, Bu Seog (Department of Civil Engineering, North Carolina State University)
  • 투고 : 2014.07.18
  • 심사 : 2015.04.15
  • 발행 : 2015.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

Over the past few decades, seismic retrofitting of structural systems has been significantly improved by the adoption of various methods such as FRP composite wraps, base isolation systems, and passive/active damper control systems. In parallel with this trend, probabilistic risk assessment (PRA) for structural and nonstructural components has become necessary for risk mitigation and the achievement of reliable designs in performance-based earthquake engineering. The primary objective of the present study was to evaluate the effect on piping fragility at T-joints due to seismic retrofitting of structural systems with passive energy-dissipation devices (i.e., linear viscous dampers). Three mid-rise building types were considered: without any seismic retrofitting; with distributed damper systems; with optimal placement of dampers. The results showed that the probability of piping system failure was considerably reduced in a Multi Degree of Freedom (MDOF) building retrofitted with optimal passive damper systems at lower floor levels. This effect of damper systems on piping fragility became insignificant as the floor level increased.

키워드

과제정보

연구 과제 주관 기관 : National Research Foundation of Korea (NRF)

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피인용 문헌

  1. Seismic Fragility of Steel Piping System Based on Pipe Size, Coupling Type, and Wall Thickness pp.2093-6311, 2018, https://doi.org/10.1007/s13296-018-0100-4
  2. Bayesian-based seismic margin assessment approach: Application to research reactor vol.12, pp.6, 2017, https://doi.org/10.12989/eas.2017.12.6.653