Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
권호 표지
DOI QR코드

DOI QR Code

Spatial Variation Characteristics of Seismic Motions through Analysis of Earthquake Records at Fukushima Nuclear Power Plant

후쿠시마 원자력발전소 지진 계측 기록 분석을 통한 지진파의 공간적 변화 특성 평가

  • Ha, Jeong-Gon (Advanced Structural and Seismic Safety Research Division, Korea Atomic Energy Research Institute) ;
  • Kim, Mi Rae (Korea Adaptation Center for Climate Change, Korea Environment Institute) ;
  • Kim, Min Kyu (Advanced Structural and Seismic Safety Research Division, Korea Atomic Energy Research Institute)
  • 하정곤 (한국원자력연구원 첨단구조.지진안전연구부) ;
  • 김미래 (한국환경정책.평가연구원 국가기후변화적응센터) ;
  • 김민규 (한국원자력연구원 첨단구조.지진안전연구부)
  • Received : 2021.04.05
  • Accepted : 2021.06.28
  • Published : 2021.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

The spatial variation characteristics of seismic motions at the nuclear power plant's site and structures were analyzed using earthquake records obtained at the Fukushima nuclear power plant during the Great East Japan Earthquake. The ground responses amplified as they approached the soil surface from the lower rock surface, and the amplification occurred intensively at about 50 m near the ground. Due to the soil layer's nonlinear characteristics caused by the strong seismic motion, the ground's natural frequency derived from the response spectrum ratio appeared to be smaller than that calculated from the shear wave velocity profile. The spatial variation of the peak ground acceleration at the ground surface of the power plant site showed a significant difference of about 0.6 g at the maximum. As a result of comparing the response spectrums at the basement of the structure with the design response spectrum, there was a large variability by each power plant unit. The difference was more significant in the Fukushima Daiichi site record, which showed larger peak ground acceleration at the surface. The earthquake motions input to the basement of the structure amplified according to the structure's height. The natural frequency obtained from the recorded results was lower than that indicated in the previous research. Also, the floor response spectrum change according to the location at the same height was investigated. The vertical response on the foundation surface showed a significant difference in spectral acceleration depending on the location. The amplified response in the structure showed a different variability depending on the type of structure and the target frequency.

Keywords

Acknowledgement

본 연구는 산업통상자원부(MOTIE)의 재원으로 한국에너지기술평가원 (KETEP)의 지원을 받아 수행한 연구입니다. (No. 20193210100040)

References

  1. Kim GJ, Yang KK, Kim BS, Kim HJ, Yun SJ, Song JK. Seismic response evaluation of seismically isolated nuclear power plant structure subjected to Gyeong-Ju earthquake. Journal of the Earthquake Engineering Society of Korea. 2016;20(7):453-460. https://doi.org/10.5000/EESK.2016.20.7.453
  2. Park DH, Cho SI, Lee YH, Choi WH, Lee DH, Kim HS. Site Monitoring System of Earthquake, Fault and Slope for Nuclear Power Plant Sites. Economic and Environmental Geology. 2018;51(2):185-201. https://doi.org/10.9719/EEG.2018.51.2.185
  3. Choi HS, Strong Ground Motion Simulation at Seismic Stations of Metropolises in South Korea by Scenario Earthquake on the Causative Fault of 2016 Gyeongju Earthquake. Journal of the Earthquake Engineering Society of Korea. 2020 March;24(2):59-65. https://doi.org/10.5000/EESK.2020.24.2.059
  4. Oh JH, Kwag S. A study on seismic probabilistic safety assessment for a research reactor. Journal of the Computational Structural Engineering Institute of Korea. 2018;31(1):31-38. https://doi.org/10.7734/COSEIK.2018.31.1.31
  5. Eem SH, Choi IK. Seismic Response Analysis of Nuclear Power Plant Structures and Equipment due to the Pohang Earthquake. Journal of the Earthquake Engineering Society of Korea. 2018;22(3):113-119. https://doi.org/10.5000/EESK.2018.22.3.113
  6. Newmark NM, Hall WJ. Development of Criteria for Seismic Review of Selected Nuclear Power Plants. NUREG/CR-0098, 1978.
  7. Park HS, Lee TH. Effect of high-frequency ground motions on the response of NPP components: A state-of-the-art review. Journal of the Korean Society of Hazard Mitigation. 2017 Dec 31;17(6):285-294. https://doi.org/10.9798/KOSHAM.2017.17.6.285
  8. Eem SH, Choi IK. A Shape of the Response Spectrum for Evaluation of the Ultimate Seismic Capacity of Structures and Equipment including High-frequency Earthquake Characteristics. Journal of the Earthquake Engineering Society of Korea. 2020;24(1):1-8. https://doi.org/10.5000/EESK.2020.24.1.001
  9. Jeong YS, Eem SH, Jeon BG, Park DU. Comparison of Response of Battery Charger in Nuclear Power Plant Depending on Frequency Characteristics in Seismic Motions. Transactions of the Korean Society for Noise and Vibration Engineering. 2019;29(1):120-130. https://doi.org/10.5050/KSNVE.2019.29.1.120
  10. Zerva A, Zervas V. Spatial variation of seismic ground motions: an overview. Appl. Mech. Rev. 2002 May 1;55(3):271-297. https://doi.org/10.1115/1.1458013
  11. Kim JK. A Study of the Dynamic Amplification Characteristics of the Major Domestic Seismic Observation Sites using Ground Motions from 12 Fukuoka Earthquakes Series. Journal of the Korean Society of Hazard Mitigation. 2013 Feb 28;13(1):177-186. https://doi.org/10.9798/KOSHAM.2013.13.1.177
  12. Kim JH, Kim JK, Heo TM, Lee JH. A Study on the Characteristics of Bi-directional Responses by Ground Motions of Moderate Magnitude Earthquakes Recorded in Korea. Journal of the Earthquake Engineering Society of Korea. 2019;23(5):269-277. https://doi.org/10.5000/EESK.2019.23.5.269
  13. Gunturi VR, Elgamal AW, Tang HT. Hualien seismic downhole data analysis. Engineering geology. 1998 Sep 1;50(1-2):9-29. https://doi.org/10.1016/S0013-7952(97)00084-7
  14. Abrahamson N, Schneider JF, Stepp JC. Spatial coherency of shear waves from the Lotung, Taiwan large-scale seismic test. Structural Safety. 1991 May 1;10(1-3):145-162. https://doi.org/10.1016/0167-4730(91)90011-W
  15. Mimura N, Yasuhara K, Kawagoe S, Yokoki H, Kazama S. Damage from the Great East Japan Earthquake and Tsunami-a quick report. Mitigation and adaptation strategies for global change. 2011 Oct;16(7):803-818. https://doi.org/10.1007/s11027-011-9297-7
  16. IAEA. The Fukushima Daiichi Accident. International Atomic Energy Agency. Vienna, Austria. c2015.
  17. IAEA. IAEA international fact finding expert mission of the Fukushima Dai-ichi NPP accident following the Greatest East Japan earthquake and Tsunami. International Atomic Energy Agency Mission Report. c2011.
  18. Tokyo Electric Power Company. Strong Motion Data - The 2011 Great East Japan (Tohoku) Earthquake - Fukushima Daiichi & Daini (Nos. 1 & 2) Nuclear Power Plants. Japan Association for Earthquake Engineering. c2011.
  19. Lee CH, Kim SY, Park JH, Kim DK, Kim TJ, Park KH. Comparative analysis of structural damage potentials observed in the 9.12 Gyeongju and 11.15 Pohang earthquakes. Journal of the Earthquake Engineering Society of Korea. 2018;22(3):175-184. https://doi.org/10.5000/EESK.2018.22.3.175
  20. Korea Hydro & Nuclear Power. Final Seismic Analysis Report (FSAR) for Shin-Wolsong No.1 and No.2, c2013.
  21. Zeghal M, Goswami N, Kutter BL, Manzari MT, Abdoun T, Arduino P, Armstrong R, Beaty M, Chen YM, Ghofrani A, Haigh S. Stress-strain response of the LEAP-2015 centrifuge tests and numerical predictions. Soil Dynamics and Earthquake Engineering, 2018;113:804-818. https://doi.org/10.1016/j.soildyn.2017.10.014
  22. Schnabel PB. Effects of Local Geology and Distance from Source on Earthquake Ground Motion. Ph.D. Thesis. University of California. Berkeley, California. c1973.
  23. NRC. Regulatory Guide 1.60, Design Response Spectra for Seismic Design of Nuclear Power Plants. Revision 1. U.S. Nuclear Regulatory Commission. Washington. DC. c1973.
  24. Tanaka H, Goto Y. Seismic simulation analysis of a BWR type reactor building by soil-building interaction model. In Proceedings of the World Conference on Earthquake Engineering, 1984;5:31.
  25. Tanaka H, Nakahara M. Investigation of soil-building interaction behavior of a BWR plant during Miyagiken-okiu earthquake of 1978. Proceeding of the Seventh World Conference on Earthquake Engineering. Istanbul, Turkey. 1980; 6:73-80.
  26. Srinivasan MG, Kot CA, Hsieh BJ. Comparison of dynamic characteristics of Fukushima Nuclear Power Plant containment building determined from tests and earthquakes. U.S. Nuclear Regulatory Comission. NUREG/CR-4432. c1985.