Browse > Article
http://dx.doi.org/10.5000/EESK.2021.25.1.033

Conversion of Recorded Ground Motion to Virtual Ground Motion Compatible to Design Response Spectra  

Ji, Hae Yeon (Department of Civil Engineering, Pusan National University)
Choi, Da Seul (Department of Civil Engineering, Pusan National University)
Kim, Jung Han (Department of Civil Engineering, Pusan National University)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.25, no.1, 2021 , pp. 33-42 More about this Journal
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.
Keywords
Spectral acceleration; Regression equation; Path attenuation; Empirical Green's function method; Design response spectrum;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 KDS 17 10 00. Seismic Design. Earthquake Engineering Society of Korea; c2018. p.12-13
2 Boore D.M. Simulation of ground motion using the stochastic method. Pure and Applied Geophysics. 2003 Mar;160(3):635-676.   DOI
3 Kim HK, Park DH, Jeong CG. Generation of Synthetic Ground Motion in Time Domain. LHI journal of land, housing, and urban affairs. 2010 Oct;1(1):51-57.   DOI
4 Kim HK, Park DH. Evaluation of Applicability of impulse function-based Algorithm for Modification of Ground Motion to Match Target Response Spectrum. Journal of the Korean Geo- Environmental Society. 2011 Apr;12(4):53-63.
5 Irikura K. Prediction of Strong Acceleration Motions Using Empirical Green's Function. Proceedings of the Seventh Japan Earthquake Engineering Symposium. 1986;151-154.
6 Jang YE, Seo HW, Kim BM, Han JT, Park DH. Selection of Ground Motions for the Assessment of Liquefaction Potential for South Korea. Journal of the Earthquake Engineering Society of Korea. 2020 Mar;24(2):111-119.   DOI
7 Roh JE, Lee SH, Seo JW, Kim DK. Ductility Demand for Short-period Structures Excited by Ground Accelerations Similar to Gyeong-ju Earthquakes. Journal of the Earthquake Engineering Society of Korea. 2016 Dec;20(7):495-502.   DOI
8 Jayaram N, Lin T, Baker J.W. A Computationally efficient ground motion selection algorithm for matching a target response spectrum mean and variance. Earthquake Spectra. 2011 Aug;27(3):797-815.   DOI
9 Yun KH, Suh JH. Numerical Test for the 2D Q Tomography Inversion Based on the Stochastic Ground-motion Model. Korean Society of Exploration Geophysicists. 2007 Aug;10(3):191-202.
10 Jo ND, Baag CE. Estimation of Spectrum Decay Parameter and Stochastic Prediction of Strong Ground Motions in Southeastern Korea. 2003 Dec;7(6):59-70.   DOI
11 Irikura K, Hakao K, Haruko S. Revision of the Empirical Green's Function Method. Seismological Society of Japan. 1997 Jan;2(B25).
12 Kanamori H, Anderson D.L. Theoretical basis of some empirical relations in seismology. Bulletin of the Seismological Society of America. 1975 Oct;65(5):1073-1095.
13 Somerville P, Smith NF, Graves RW. Abrahanmson NA, Modification of Empirical Strong Ground Motion Attenuation Relations to Include the Amplitude and Duration Effects of Rupture Directivity. Seismological Research Letters. 1997 Jan;68(1):199-222.   DOI