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http://dx.doi.org/10.12652/Ksce.2015.35.1.0141

Estimation of Shear Wave Velocity of Rockfill Zone by Dynamic Analysis using Micro-earthquake Records  

Ha, Ik Soo (Kyungnam University)
Lee, Soo Gwun (Kyungnam University)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.35, no.1, 2015 , pp. 141-152 More about this Journal
Abstract
The objective of this study is to estimate shear wave velocity of rockfill materials by making practical use of the micro-earthquake records which are ordinarily obtained at a domestic rockfill dam and to verify its applicability. Micro-earthquake records were obtained at the site of Heongseong dam and Soyanggang dam, which are the existing multi-purpose dams in Korea. In the previous study, the fundamental periods of each dam were already evaluated by analyzing the response spectrum of the observed records. In this study, numerical analyses varying shear moduli of rockfill zone were carried out using the acceleration histories measured at the abutment as input ground motions. From comparison between the fundamental periods calculated by numerical analyses and measured records, the shear wave velocities with depth were estimated. It is found that the effect of different earthquake events on shear wave velocity estimation for the target dam materials is negligible and the shear wave velocity can be consistently evaluated. Furthermore, comparing the shear wave velocity with the previous researchers' empirical relationships and field test results, applicability of suggested method is verified. Therefore, in case that it is impossible to conduct field tests and estimation is preliminary, the suggested method can be practically used.
Keywords
Micro-earthquake; Rockfill dam; Dynamic numerical analysis; Fundamental period; Shear wave velocity;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Chopra, A. K. (1995). Dynamics of structures : Theory and Application of Earthquake Engineering, Prentice-Hall, Inc., pp. 416-421.
2 Ha, I. S. (2011). "Evaluation for fundamental periods of domestic rockfill dams with micro-earthquake records." J. of Korean Geo-Environmental Society, KGES, Vol. 12, No. 6, June, pp. 53-60 (in Korean).
3 Ha, I. S., Kim, N. R. and Lim, J. Y. (2013). "Estimation of shear wave velocity of earth dam materials using artificial blasting vibration test." J. of Korean Society of Civil Engineers, KSCE, Vol. 33, No. 2, March, pp. 619-629 (in Korean).   DOI
4 Ha, I. S., Lee, J. W., Cho, S. E. and Oh, B. H. (2008). "Development of dam earthquake monitoring system and application of earthquake records for dam safety management against earthquake." Proc. of Korean Geotechnical Society, KGS, October, pp. 1389-1396 (in Korean).
5 Hatanaka, M. (1955). "Fundamental considerations on the earthquake resistant properties of the earth dam." Bulletin No. 11, Disaster Prevention Research Institute, Kyoto University, Japan (in Japanese).
6 Itasca Consulting Group (2011). FLAC-Fast lagrangian analysis of continua, Version 7.0, Itasca Consulting Group, Inc., Minneapolis, Minnesota. USA.
7 Korea Water Resources Corporation (Kwater) (1973). Construction report for Soyanggang multi-purpose Dam (in Korean).
8 Korea Water Resources Corporation (Kwater) (2002). Construction report for Heongseong multi-purpose Dam (in Korean).
9 Korea Water Resources Corporation (Kwater) (2008). 3-dimensional evaluation of weak points of dam for earthquake and reinforcement(I), Report ID KIWE-DSRC-08-08, Kwater Institute, pp. 113-115 (in Korean).
10 Korea Water Resources Corporation (Kwater) (2009). 3-dimensional evaluation of weak points of dam for earthquake and reinforcement(II), Report ID KIWE-DSRC-09-07, Kwater Institute, pp. 29-38 (in Korean).
11 Makdisi, F. I. and Seed, H. B. (1979). "Simplified procedure for evaluating embankment response." Journal of Geotechnical Engineering Division, Vol. 105, No. GT 12, pp. 1427-1434.
12 Ambraseys, N. N. (1960). "On the shear response of a two dimensional wedge subjected to an arbitrary disturbance." Bulletin of the Seismological Society of America, Vol. 50, pp. 45-56.
13 Schnabel, P. B., Lysmer, J. and Seed, H. B. (1972). SHAKE: A Computer Program for Earthquake Response Analysis of Horizontally Layered Sites, Report No. EERC 71-12, Earthquake Engineering Research Center, Univ. of California Berkeley, California.
14 Seed, H. B. and Idriss, I. M. (1970). Soil moduli and damping factors for dynamic response analyses, Report No. EERC 70-10, Earthquake Engineering Research Center, Univ. of California Berkeley, California, pp. 1-43.
15 Seed, H. B., Robert, T. W., Idriss, I. H. and Tokimatsu, K. (1984). Moduli and damping factors for dynamic analysis of cohesionless soils, Report No. EERC 84-14, Earthquake Engineering Research Center, Univ. of California Berkeley, California.
16 Vrymoed, J. (1981). "Dynamic FEM model of Oroville dam." Journal of Geotechnical Engineering, ASCE, Vol. 107, No. 8, pp. 1057-1077.
17 Korean Geotechnical Society (KGS) (2006). Seismic design for earth structures, Series No. 8, Goomibooks, pp. 51-197 (in Korean).
18 Makdisi, F. I. (1976). Performance and analysis of earth dams during strong earthquake, thesis presented of the University of California at Berkeley.
19 Mejia, H., Seed, H. B. and Lysmer, J. (1982). "Dynamic analysis of earth dams in three dimensions." Journal of Geotechnical Engineering, ASCE, Vol. 108, No. GT 12, pp. 1586-1604.
20 Mejia, L. H. and Dawson, E. M. (2006). "Earthquake deconvolution for FLAC in FLAC and numerical modeling in geomechanics." Proc. of the 4th International FLAC Symposium, Madrid, Spain, pp. 211-219.
21 Mejia, L. H. and Seed, H. B. (1983). "Comparison of 2-D and 3-D dynamic analyses of earth dams." Journal of Geotechnical Engineering, ASCE, Vol. 109, No. 11, pp. 1383-1398.   DOI
22 Okamoto, S. (1984). Introduction to earthquake engineering, 2nd Edition, University of Tokyo Press, pp. 466-477.
23 Ministry of Construction and Transportation (MOCT) (1997). Study on seismic design criterion (in Korean).
24 Ministry of Land, Transport and Maritime Affairs (MLTMA) (2011). Dam design criterion, pp. 223-224 (in Korean).
25 Ohmachi, T. and Kuwano, J. (1994). Dynamic safety of earth and rockfill dams, A.A. BALKEMA/ROTTERDAM, pp. 32-49.
26 Sawada, Y. and Takahashi, T. (1975). "Study on the material properties and the earthquake behaviors of rockfill dams." Proc. of 4th Japan Earthquake Engineering Symposium, Tokyo, pp. 695-702.