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http://dx.doi.org/10.5000/EESK.2007.11.1.045

Determination of Mean Shear Wave Velocity to the Depth of 30m Based on Shallow Shear Wave Velocity Profile  

Sun, Chang-Guk (한국지질자원연구원 지진연구센터)
Chung, Choong-Ki (서울대학교 지구환경시스템공학부)
Kim, Dong-Soo (한국과학기술원 건설및환경공학과)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.11, no.1, 2007 , pp. 45-57 More about this Journal
Abstract
The mean shear wave velocity to the depth of 30 m (Vs30) derived from the western Vs is the current site classification criterion for determining the design seismic ground motion taking into account the site amplification potential. In order to evaluate the Vs30 at a site, a shear wave velocity (Vs) Profile extending to at least 30 m in depth must be acquired from in-situ seismic test. In many cases, however, the resultant depth of the Vs profile may not extend to 30 m, owing to the unfavorable field condition and the limitation of adopted testing techniques. In this study, the Vs30 and the mean shear wave velocity to a depth shallower, than 30 m (VsDs) were computed from the Vs profiles more than 30 m in depth obtained by performing various seismic tests at total 72 sites in Korea, and a correlation between Vs30 and VsDs was drawn based on the computed mean Vs data. In addition, a method for extrapolating the Vs profile from shallow depth to 30 m was developed by building a shape curve based on the average data of all Vs profiles. For evaluating the Vs30 from the shallow Vs profiles, both the methods using VsDs and shape curve result in less bias than the simplest method of extending the lowermost Vs equally to 30 m in depth, and are usefully applicable particularly in the cases of the Vs profiles extending to at least 10 m in depth.
Keywords
site classification; mean shear wave velocity; seismic test; depth shallower than 30 m; bedrock depth;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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1 Dobry, R, Borcherdt, R.D., Crouse, C.B., Idriss, L.M., Joyner, W.B., Martin, G.R., Power, M.S., Rinne, E.E. and Seed, R.B., 'New Site Coefficients and Site Classification System Used in Recent Building Seismic Code Provisions.' Earthquake Spectra, Vol. 16, 2000, pp. 41-67   DOI   ScienceOn
2 ICBO, 1997 Uniform Building Code, Volume 2 - Structural Engineering Design Provisions, International Conference of Building Officials, 1997
3 건설교통부, 내진설계기준연구(II), 1997, pp. 708
4 BSSC, NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Structures, Part l-Provisions, 2000 Edition, Building Seismic Safety Council, Washington D. C., 2000
5 Sun, C.G., Kim, D.S. and Chung, C.K., 'Geologic Site Conditions and Site Coefficients for Estimating Earthquake Ground Motions in the Inland Areas of Korea,' Engineering Geology, Vol. 81, 2005, pp. 446-469   DOI   ScienceOn
6 Anderson, J.G., Lee, Y., Zeng, Y. and Day, S., 'Control of Strong Motion by the Upper 30 Meters,' Bulletin of the Seismological Society of America, Vol. 86, 1996, pp. 1749-1759
7 Joyner, W., Warrick, R. and Fumal, T., 'The Effects of Quaternary Alluvium on Strong Ground Motion in the Coyote Lake,' Bulletin of the Seismological Society of America, Vol. 71, 1981, pp. 1333-1349
8 Kim, D.S., Chung, C.K., Sun, C.G. and Bang, E.S., 'Site Assessment and Evaluation of Spatial Earthquake Ground Motion of Kyeongju,' Soil Dynamics and Earthquake Engineering, Vol. 22, 2002, pp. 371-387   DOI   ScienceOn
9 윤종구, 김동수, 방은석, '국내 지반 특성에 적함한 지반분류 방법 및 설계응답스펙트럼 개선에 대한 연구 (I) - 국내 내진 설계 기준의 문제점 분석' 한국지진공학회 논문집, 제10권, 2 호, 2006, pp. 39-50   과학기술학회마을   DOI
10 Devore, J.L., Probability and Statistics for Engineering and the Science, 3rd ed., Duxbury Press, Belmont, California, 1991
11 Rodriguez-Marek, A., Bray, J.D. and Abrahamson, N., Characterization of site response general categories, PEER Report 1999/03, Pacific Earthquake Engineering Research Center, University of California, Berkeley, 1999
12 김홍종, 선창국, 조성민, 허열, 'SCPT에서 지반의 깊이별 전단파 속도 결정 과정에 대한 분석', 대한토목학회논문집, 제25 권, 3C호, 2005, pp. 201-214
13 Wills, C.J., Petersen, M., Bryant, W.A., Reichle, M., Saucedo, G.J., Tan, S., Taylor, G. and Treiman, J., 'A Site-conditions Map for California Based on Geology and Shear-wave Velocity,' Bulletin of the Seismological Society of America, Vol. 90, 2000, pp. 187-208   DOI   ScienceOn
14 ICC, 2006 International Building Code, International Code Council, 2006
15 김동수, 방은석, 서원석, '표준관입시험을 이용한 업홀시험에서 전단파 속도 주상도의 도출', 한국지반공학회 논문집, 제19권, 2호, 2003, pp. 135-146
16 Boore, D.M., 'Estimating Vs(30)(or NEHRP Site Classes) from Shallow Velocity Models (Depths < 30 m),' Bulletin of the Seismological Society of America, Vol. 94, 2004, pp. 591-597   DOI   ScienceOn
17 선창국, 양대성, 정충기, '서울 평야 지역에 대한부지 고유의 지진 증폭 특성 평가', 한국지진공학회 논문집, 제9권, 4호, 2005, pp. 29-42   과학기술학회마을   DOI
18 Borcherdt, R.D., 'Estimates of Site-dependent Response Spectra for Design (Methodology and Justification),' Earthquake Spectra, Vol. 10, 1994, pp. 617-653   DOI   ScienceOn
19 Sun, C.G., Geotechnical Information System and Site Amplification Characteristics for Earthquake Ground Motions at Inland of the Korean Peninsula, Ph.D. Dissertation, Seoul National University, 2004
20 선창국, 목영진, 정충기, 김명모, '스프링식 횡방향 발진 크로스홀 탄성파 시험을 통한 지반 동적 특성의 합리적 산정', 한국지진공학회 논문집, 제10권,4호, 2006, pp. 1-13   과학기술학회마을   DOI
21 윤종구, 김동수, 방은석, '국내 지반 특성에 적함한 지반분류 방법 및 설계응답스펙트럼 개선에 대한 연구 (II) - 지반분류 개선방법', 한국지진공학회 논문집, 제10권, 2호, 2006, pp. 51-62   과학기술학회마을   DOI
22 선창국, 강병수, 김영수, 목영진, '인홀 시험을 이용한 암반의 동적 강성 평가', 지질공학, 제15권, 3호, 2005, pp. 309-323   과학기술학회마을
23 선창국, 정충기, 김동수, '국내 내륙의 설계 지반 운동 결정을 위한 지반 증폭 계수 및 지반 분류 체계 제안', 한국지반공학회 논문집, 제21권, 6호, 2005, pp. 101-115   과학기술학회마을