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

  • Received : 2012.10.30
  • Accepted : 2013.01.23
  • Published : 2013.03.04


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.


Soil-Structure Interaction;Seismic Isolation System;Seismic Performance;Seismic Fragility;Nuclear Power Plants


  1. Lee SH, Lee YS. Application Plan of Seismic Isolation System for APR 1400. Proceedings of the earthquake engineering workshop, EESK, 2010.
  2. R Ivan Skinner, William H Robinson, Fraeme H McVerry. An Introduction to Seismic Isolation. New York: John Wiley & Sons, INC;c1993.
  3. Jun YS. Technical Review of Seismic Isolation Systems for NPP Application. Proceedings of the earthquake engineering Workshop, EESK;2010.
  4. Bozidar Stojadinovic. Technical Considerations for Seismic Isolation of Nuclear Facility Structure. UC Berkeley. 2011.
  5. Alessandro Martelli, Paolo Masoni, Massimo Forni, Maurizio Indirli, Bruno Spadoni, Giacomo Di Pasquale, Vittorio Lucarelli, Tito Sano, Giuseppe Bonacina, Aldo Castoldi. ENEA activities on seismic isolation of nuclear and non-nuclear structures. Nuclear Engineering and Design, 1991;127:265-272.
  6. Japan Electric Association. Technical Design Guide for Seismic Isolation of Nuclear Power Facilities. JEAG4614-2000;2000.
  7. Choi IK, Seo JM. Inelastic Energy Absorption Factor for the Seismic Probabilistic Risk Assessment of NPP Containment Structure. EESK J. Earthquake Eng. 2001;5(5):47-56.
  8. U.S. Nuclear Regulatory Commission. Standard Review Plan 3.7.2 Revisoion 3, NUREG-0800;2007.
  9. Eem SH, Jung HJ. Seismic Analysis of Base-Isolated Nuclear Containment Building Considering Soil-Structure Interaction Effect Conference on earthquake engineering. EESK. 2012;189-192.
  10. U.S. Nuclear Regulatory Commission 1.208. A Performance-Based Approach to Define The Site-Specific Earthquake Ground Motion; 2007.
  11. Combustion Engineering, System80+ Standard Design. U.S. Department of Energy;1990.
  12. A. M. Kammerer, A. S. Whittaker, M. C. Constantinou,. Technical Considerations for Seismic Isolation of Nuclear Facilities. NUREG; 2012.
  13. ASCE/SEI. ASCE/SEI 7-10 : Minimum DEsign Loads for Buildings and Other Structures;2010.
  14. National Institute of Building Sciences. NEHRP Recommended Provisions (FEMA451);2006.
  15. AASHTO. Guide Specifications for Seismic Isolation Design 3rd Editions;2010.
  16. Kim HU, Park DH. A Parametric Study on Preliminary Design of the Seismic Isolation System for NPP. Conference on earthquake engineering, EESK;c2012.
  17. Farzad Naeim, James M. Kelly. Design of Seismic Isolated Structures. New York: John Wiley & Sons, INC;c1999.
  18. Lysmer J, Ostadan F, Tabatabaie M, Vahdani S, Tajirian F. A System for Analysis of Soil-Structure Interaction, Theoretical Manual. Berkeley: University of California;c1988.
  19. Caughy TK. Equivalent Linearization Techniques. Journal of the Acoustical Society of America. 1963;35(11):1706-1711.
  20. Shinozuka M, Feng MQ, Kim HK, Ueda T. Statistical Analysis of Fragility Curves. Technical Report at Multidisciplinary Center for Earthquake Engineering Research. New York;2002.
  21. Yi JH, Youn JY, Yun CB. Seismic Risk Assessment of Bridges Using Fragility Analysis. EESK J. Earthquake Eng. 2004;8(6):31-43.

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  1. Characteristics of Earthquake Responses of an Isolated Containment Building in Nuclear Power Plants According to Natural Frequency of Soil vol.17, pp.6, 2013,
  2. Earthquake Damage Assessment of Buildings Using Opendata in the Pohang and the Gyeongju Earthquakes vol.22, pp.3, 2018,
  3. Seismic Fragility of Base-Isolated Nuclear Power Plant Considering Effects of Near-Fault Ground Motions vol.18, pp.7, 2018,


Supported by : 한국에너지기술평가원 (KETEP)