계측 기록의 설계스펙트럼 부합 가상 지진 변환 방법
Conversion of Recorded Ground Motion to Virtual Ground Motion Compatible to Design Response Spectra
2
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
The design response spectrum presented in the seismic design standard reflects the characteristics of the tectonic environment at a site. However, since the design response spectrum does not represent the ground motion with a specific earthquake magnitude or distance, input ground motions for response history analysis need to be selected reasonably. It is appropriate to use observed ground motions recorded in Korea for the seismic design. However, recently recorded ground motions in the Gyeongju (2016) or Pohang (2017) earthquakes are not compatible with the design response spectrum. Therefore, it is necessary to convert the recorded ground motion in Korea to a model similar to the design response spectrum. In this study, several approaches to adjust the spectral acceleration level at each period range were tested. These are the intrinsic and scattering attenuation considering the earthquake environment, magnitude, distance change by the green function method, and a rupture propagation direction's directivity effect. Using these variables, the amplification ratio for the representative natural period was regressed. Finally, the optimum condition compatible with the design response spectrum was suggested, and the validation was performed by converting the recorded ground motion.
Abstract
The design response spectrum presented in the seismic design standard reflects the characteristics of the tectonic environment at a site. However, since the design response spectrum does not represent the ground motion with a specific earthquake magnitude or distance, input ground motions for response history analysis need to be selected reasonably. It is appropriate to use observed ground motions recorded in Korea for the seismic design. However, recently recorded ground motions in the Gyeongju (2016) or Pohang (2017) earthquakes are not compatible with the design response spectrum. Therefore, it is necessary to convert the recorded ground motion in Korea to a model similar to the design response spectrum. In this study, several approaches to adjust the spectral acceleration level at each period range were tested. These are the intrinsic and scattering attenuation considering the earthquake environment, magnitude, distance change by the green function method, and a rupture propagation direction's directivity effect. Using these variables, the amplification ratio for the representative natural period was regressed. Finally, the optimum condition compatible with the design response spectrum was suggested, and the validation was performed by converting the recorded ground motion.
참고문헌 (13)
- "KDS 17 10 00. Seismic Design", Earthquake Engineering Society of Korea, 12~13 (2018)
- Boore D. M, "Simulation of ground motion using the stochastic method", Pure and Applied Geophysics, 160(3), pp.635~676 (2003)
- Kim HK, "Generation of Synthetic Ground Motion in Time Domain", LHI journal of land, housing, and urban affairs, 1(1), pp.51~57 (2010)
- 김현관, "Impulse 함수 기반 목표응답스펙트럼 맞춤형 지진파 보정 알고리즘의 적용성 평가", 한국지반환경공학회 논문집, 12(4), pp.53~63 (2011), 한국지반환경공학회
- Irikura K, "Prediction of Strong Acceleration Motions Using Empirical Green’s Function", Proceedings of the Seventh Japan Earthquake Engineering Symposium, pp.151~154 (1986)
- 장영은, "국내 액상화 평가를 위한 지진파 선정", 한국지진공학회논문집, 24(2), pp.111~119 (2020), 한국지진공학회[DOI]
- 노지은, "경주지진과 유사한 특성을 가지는 지반가속도로 가진된 단주기 구조물 변위연성도 평가", 한국지진공학회논문집, 20(7), pp.495~501 (2016), 한국지진공학회
- Jayaram N, "A Computationally efficient ground motion selection algorithm for matching a target response spectrum mean and variance", Earthquake Spectra, 27(3), pp.797~815 (2011)
- 연관희, "추계학적 지진동모델에 기반한 2D Q 토모그래피 수치모델 역산", 물리탐사, 10(3), pp.191~202 (2007), 한국물리탐사학회
- 조남대, "한반도 남동부에서 부지효과를 고려한 스펙트럼 감쇠상수 추정 및 강지진동의 추계학적 모사", 한국지진공학회논문집, 7(6), pp.59~70 (2003), 한국지진공학회
- Irikura K, "Revision of the Empirical Green’s Function Method", Seismological Society of Japan, 2(B25) (1997)
- Kanamori H, "Theoretical basis of some empirical relations in seismology", Bulletin of the Seismological Society of America, 65(5), pp.1073~1095 (1975)
- Somerville P, "Modification of Empirical Strong Ground Motion Attenuation Relations to Include the Amplitude and Duration Effects of Rupture Directivity", Seismological Research Letters, 68(1), pp.199~222 (1997)