Earthquakes and Structures

  • 제8권3호
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  • Pages.779-799
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  • 2015
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Effect of higher modes and multi-directional seismic excitations on power plant liquid storage pools

  • Eswaran, M. (Structural and Seismic Engineering Section, Reactor safety Division, Bhabha Atomic Research Centre) ;
  • Reddy, G.R. (Structural and Seismic Engineering Section, Reactor safety Division, Bhabha Atomic Research Centre) ;
  • Singh, R.K. (Structural and Seismic Engineering Section, Reactor safety Division, Bhabha Atomic Research Centre)
  • 투고 : 2014.07.28
  • 심사 : 2015.01.03
  • 발행 : 2015.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

The slosh height and the possibility of water spill from rectangular Spent Fuel Storage Bays (SFSB) and Tray Loading Bays (TLB) of Nuclear power plant (NPP) are studied during 0.2 g, Safe Shutdown Earthquake (SSE) level of earthquake. The slosh height obtained through Computational Fluid dynamics (CFD) is compared the values given by TID-7024 (Housner 1963) and American concrete institute (ACI) seismic codes. An equivalent amplitude method is used to compute the slosh height through CFD. Numerically computed slosh height for first mode of vibration is found to be in agreement the codal values. The combined effect in longitudinal and lateral directions are studied separately, and found that the slosh height is increased by 24.3% and 38.9% along length and width directions respectively. There is no liquid spillage under SSE level of earthquake data in SFSB and TLB at convective level and at free surface acceleration data. Since seismic design codes do not have guidelines for combined excitations and effect of higher modes for irregular geometries, this CFD procedure can be opted for any geometries to study effect of higher modes and combined three directional excitations.

키워드

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