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http://dx.doi.org/10.12652/Ksce.2019.39.6.0811

Verification of Combined Sinusoidal Loads for Simulating Real Earthquakes  

Choi, Jae-soon (Seokyeong University)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.39, no.6, 2019 , pp. 811-819 More about this Journal
Abstract
Since the Gyeongju earthquake in 2016 and the Pohang earthquake in 2017, the performance of various dynamic tests for seismic design has increased in Korea. However, sinusoidal load has been continuously used in the conventional laboratory tests to evaluate liquefaction potential and determine input-parameters in the numerical analysis. However, recent research results suggest that it is difficult to accurately simulate excess pore water changes of the ground under earthquake loads. In order to solve this problem, this study proposes a combined sinusoidal loading and examines its applicability to the cyclic shear and triaxial test. Also, its validity is examined through performing of shaking-table test and numerical analysis based on the effective stress model. As a result, it was found that the proposed combined sinusoidal loading can more accurately simulate the change of excess pore water pressure in saturated soils under real earthquake load than the sinusoidal load.
Keywords
Sinusoidal load; Real earthquake; Combined sinusoidal load; Shaking table test; Effective stress analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 Byrne, P. M. (1991). "A cyclic shear-volume coupling and pore pressure model for sand." In Proceedings: Second International conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics (St. Louis, Missouri, March, 1991), Paper No. 1.24, pp. 47-55.
2 Choi, J. S., Jang, S. Y. and Kim, S. I. (2007), "Detailed investigation on the dynamic excess pore water pressure through liquefaction tests using various dynamic loadings." Journal of Earthquake Engineering Society of Korea, Vol. 11, No. 2, pp. 81-94.   DOI
3 Desai, C. S. (2000). "Evaluation of liquefaction using disturbed state and energy approaches." Journal of the Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 126, No. 7, pp. 618-631.   DOI
4 Hwang, S. J. (2005). An experimental study on the liquefaction behavior under various loading condition, Masters dissertation, Yonsei University, Seoul, Korea.
5 Iai, S., Matsunaga, Y. and Kaneoka, T. (1992). "Strain space plasticity model for cyclic mobility." Soil and Foundation, JSSMFE, Vol. 32, No. 2, pp. 1-15.   DOI
6 Ishihara, K. and Yasuda, S. (1972). "Sand liquefaction due to irregular excitation." Soil and Foundations, Vol. 12, No. 4, pp. 65-77.   DOI
7 Ishihara, K. and Yasuda, S. (1975). "Sand liquefaction in hollow cylinder torsion under irregular excitation." Soil and Foundations, Vol. 15, No. 1, pp. 45-59.   DOI
8 Martin, G. R., Finn, W. D. and Seed, H. B. (1975). "Fundamentals of liquefaction under cyclic loading." Journal of the soil Mechanics and Foundations Division, ASCE, Vol. 101, No. GT5, pp. 423-438.
9 Iwasaki, T., Tatuoka, F., Tokida, K. and Yasuda, S. (1978). "A practical method for assessing soil liquefaction potential based on case studies at various Sites in Japan." Proceedings of 5th Japan Earthquake Symposium, pp. 641-648.
10 Kwan, W. S and Huaz, J. (2018). "Effects of irregular loading on sand responses before and after liquefaction initiation." Proceeding of the 11th NCEE, Earthquake Engineering Research Institute, LA, CA.
11 Park, I. J. (1997). Disturbed state modelling for dynamic and liquefaction analysis, Ph.D. Dissertation, Dept. of Civil Engineering and Engineering Mechanics, Univ. of Arizona, Tuscon, Arizona.
12 Park, S. Y. (2003). An experimental study on the liquefaction resistance strength using real earthquake loadings considering seismic magnitude in moderate earthquake region, Masters dissertation, Yonsei University, Seoul, Korea.
13 Port and Harbour Research Institute (PHRI) (1997). Handbook on liquefaction remediation of reclaimed land, A. A. Balkema, Amsterdam.
14 Seed, H. B. (1979). "Soil liquefaction and cyclic mobility evaluation for level ground during earthquakes." Journal of the Geotechnical Engineering Division, ASCE, Vol. 105, No. GT2, pp. 83-108.
15 Seed, H. B. and Idriss, I. M. (1971). "Simplified procedure for evaluating soil liquefaction potential." Journal of Soil Mechanics and Foundation Division, ASCE, Vol. 97, No. SM9, pp. 1248-1272.
16 Sim, J. W. (2002). An experimental study for estimation of the liquefaction resistance strength of saturated sand using real earthquake loading, Masters dissertation, Yonsei University, Seoul, Korea.
17 Seed, H. B., Idriss, I. M., Makdisi, F. and Bamerjee, N. (1975). Representation of irregular stress time historics by equivalent uniform stress series in liquefaction analysis, Report No. EERC 75-29, UCB.
18 Seed, H. B., Martin, P. O. and Lysmer, J. (1976). The generation and dissipation of pore water pressure during soil liquefaction, Report No. EERC 75-26, Earthquake Engineering Research Institute, University of California, Berkeley, California.
19 Silver, M. L., Chan, C. K., Ladd, R. S., Lee, K. L., Tiedemann, D. A., Townsend, F. C., Valera, J. E. and Wilson, J. H. (1976). "Cyclic triaxial strength of standard test sand." Journal of the Geotechnical Engineering Division, ASCE, Vol. 102, No. GT5, pp. 511-523.   DOI
20 Townsend, F. C. (1978). A review of factors affecting cyclic triaxial tests, Dynamic Geotechnical Testing, ASTM STP 654, American Society for Testing and Materials, pp. 356-383.
21 Seed, H. B. and Lee, K. L. (1966). "Liquefaction of saturated sands during cyclic loading." Journal of the Soil Mechanics and Foundations Division, ASCE, Vol. 92, No. SM6, pp. 105-134.   DOI
22 Youd, T. L., Idriss, I. M., Andrus, R. D., Arango, I., Castro, G., Christian, J. T., Dobry, R., Finn, W. D. L., Harder, L. F., Hynes, M. E., Ishihara, K., Koester, J. P., Liao, S. S. C., Marcuson III, W. F., Martin, G. R., Mitchell, J. K., Moriwaki, Y., Power, M. S., Robertson, P. K., Seed, R. B. and Stokoe II, K. H. (2001). "Liquefaction resistance of soils : Summary report from the 1996 NCEER and 1998 NCEER/NSF workshops on evaluation of liquefaction resistance of soils." Journal of the Geotechnical Engineering Division, ASCE, Vol. 127, No. 10, pp. 817-833.   DOI