Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

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

DOI QR Code

Response Spectra of 2016 Gyeongju Earthquake and Comparison with Korean Standard Design Spectra

2016년 경주지진 스펙트럼과 한국표준설계스펙트럼의 비교

  • Kim, Jae Kwan (Department of Civil and Environmental Engineering, Seoul National University) ;
  • Kim, Jung Han (School of Urban, Architecture and Civil Engineering, Pusan National University) ;
  • Lee, Jin Ho (Department of Ocean Engineering, Pukyong National University) ;
  • Heo, Tae Min (Department of Civil and Environmental Engineering, Seoul National University)
  • 김재관 (서울대학교 건설환경공학부) ;
  • 김정한 (부산대학교 건설융합학부) ;
  • 이진호 (부경대학교 해양공학과) ;
  • 허태민 (서울대학교 건설환경공학부)
  • Received : 2017.06.08
  • Accepted : 2017.08.31
  • Published : 2017.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

On September 12, 2016, Gyeongju earthquake occurred. Its local magnitude was announced to be $M_L=5.8$ by Korea Meteorological Administration (KMA). Ground motion data recorded at KMA, EMC and KERC stations was obtained from their data bases. From the data, horizontal and vertical response spectra, and V/H ratio were calculated. The horizontal spectrum was defined as geometric mean spectrum, GMRotI50. From the statistical analysis of the geometric mean spectra, a mean plus one standard deviation spectrum in lognormal distribution is obtained. Regression analysis is performed on this curve to determine the shape of spectrum including transition periods. Applying the same procedure, the shape and transition periods of vertical spectrum was obtained. These results were compared with the Korean standard design spectra, which were developed from domestic and overseas intraplate earthquake records. The response spectra of Gyeongju earthquake were found to be almost identical with the newly proposed design spectra. Even the V/H ratios showed good agreement. These results confirmed that the method adopted when developing the standard design spectra were valid and the developed design spectra were reliable.

Keywords

References

  1. KMA. Domestic Earthquake List. Available from: http://www.kma.go.kr/weather/earthquake_volcano/domesticlist.jsp
  2. Ministry of Public Safety and Security. 9.12 Gyeongju Earthquake White Paper. c2017. p. 11-35.
  3. KMA. National Earthquake Comprehensive Information System Available from: http://necis.kma.go.kr/
  4. EMC. Earthquake Monitoring Center. Available from: http://emc.kins.re.kr/
  5. KERC. Korea Earthquake Research Center. Available from: http://quake.kigam.re.kr/
  6. Kenneth W, Bozorgnia C, Bozorgnia Y. NGA Ground Motion Model for the Geometric Mean Horizontal Component of PGA, PGV, PGD and 5% Damped Linear Elastic Response Spectra for Periods Ranging from 0.01 to 10 s. Earthquake Spectra. 2008 Feb;24(1):139-171. https://doi.org/10.1193/1.2857546
  7. Boore DM, Watson-Lamprey JA, Abrahamson NA. Orientation-Independent Measures of Ground Motion. Bulletin of the Seismological Society of America. 2006 Aug;96(4A):1502-1511. https://doi.org/10.1785/0120050209
  8. American Society of Civil Engineers (ASCE). Minimum Design Loads for Buildings and Other Structures. ASCE/SEI 7-10; Chapter 21. Site-specific Ground Motion Porcedures for Seismic Design; c2010. p. 207-209.
  9. Kim JK, Kim JH, Lee JH, Heo TM. Development of Korean standard horizontal design spectrum based on the domestic and overseas intraplate earthquake records. Journal of the Earthquake Engineering Society of Korea. 2016 Nov;20(6):369-378. https://doi.org/10.5000/EESK.2016.20.6.369
  10. Kim JK, Kim JH, Lee JH, Heo TM. Development of Korean standard vertical design spectrum based on the domestic and overseas intraplate earthquake records. Journal of the Earthquake Engineering Society of Korea. 2016 Nov;20(6):413-424. https://doi.org/10.5000/EESK.2016.20.6.413
  11. Kim YH, Rhie JK, Kang TS, Kim KH, Kim MO, Lee SJ. The 12 September 2016 Gyeongju earthquakes: 1. Observation and remaining questions. Geosciences Journal. 2016 Dec;20(6):747-752. https://doi.org/10.1007/s12303-016-0033-x
  12. Park JC, Kim WH, Chung TW, Baag CE, Ree JH. Focal mechanisms of recent earthquakes in the Southern Korean Peninsula. Geophysical Journal International. 2007 Jun;169(3):1103-1114. https://doi.org/10.1111/j.1365-246X.2007.03321.x
  13. Davenport WB Jr. Probability and random processes: an introduction for applied scientists and engineers. New York: McGraw-Hill; c1970. 542p.
  14. EESK, KICT. The Research of Seismic Design Code(II). Ministry of Construction and Transportation. c1997. 37p.
  15. Bozorgnia Y, Campbell K. The Vertical-to-Horizontal Response Spectral Ratio and Tentative Procedures for Developing Simplified V/H and Vertical Design Spectra. Journal of Earthquake Engineering. 2004 Jun;8(2):175-207. https://doi.org/10.1080/13632460409350486

Cited by

  1. Amplification Characteristics of Domestic and Overseas Intraplate Earthquake Ground Motions in Korean Soil and Standard Horizontal Design Spectrum for Soil Sites vol.22, pp.7, 2018, https://doi.org/10.5000/EESK.2018.22.7.391
  2. Response Spectra of 2017 Pohang Earthquake and Comparison with Korean Standard Design Spectra vol.22, pp.3, 2018, https://doi.org/10.5000/EESK.2018.22.3.129