Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Seismic Fragility Evaluation of Isolated NPP Containment Structure Considering Soil-Structure Interaction Effect

지반-구조물 상호작용 효과를 고려한 지진격리시스템이 적용된 원전 격납건물의 지진 취약도 평가

  • 임승현 (한국과학기술원 건설및환경공학과) ;
  • 정형조 (한국과학기술원 건설및환경공학과) ;
  • 김민규 (한국원자력연구원 종합안전평가부) ;
  • 최인길 (한국원자력연구원 종합안전평가부)
  • Received : 2012.10.30
  • Accepted : 2013.01.23
  • Published : 2013.03.04
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Abstract

Several researches have been studied to enhance the seismic performance of nuclear power plants (NPPs) by application of seismic isolation. If a seismic base isolation system is applied to NPPs, seismic performance of nuclear power plants should be reevaluated considering the soil-structure interaction effect. The seismic fragility analysis method has been used as a quantitative seismic safety evaluation method for the NPP structures and equipment. In this study, the seismic performance of an isolated NPP is evaluated by seismic fragility curves considering the soil-structure interaction effect. The designed seismic isolation is introduced to a containment building of Shin-Kori NPP which is KSNP (Korean Standard Nuclear Power Plant), to improve its seismic performance. The seismic analysis is performed considering the soil-structure interaction effect by using the linearized model of seismic isolation with SASSI (System for Analysis of Soil-Structure Interaction) program. Finally, the seismic fragility is evaluated based on soil-isolation-structure interaction analysis results.

Keywords

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  3. Seismic Fragility of Base-Isolated Nuclear Power Plant Considering Effects of Near-Fault Ground Motions vol.18, pp.7, 2018, https://doi.org/10.9798/KOSHAM.2018.18.7.315