Browse > Article

Evaluation of Piezocone Coefficient of Soft Grounds in the Areas of Gyeonggi and Incheon  

Park, Soo-Yong ((주) KER)
Kim, Ki-Beom ((주) KER 개발사업부)
Lee, Yun-Kyu ((주) 태영건설 기술연구소)
Baek, Seung-Cheol (안동대학교 공과대학 토목공학과)
Publication Information
Journal of the Korean GEO-environmental Society / v.13, no.5, 2012 , pp. 41-49 More about this Journal
Abstract
In this study, laboratory test, in-situ vane shear test and piezocone penetration test in the study area were conducted to investigate the engineering characteristics of soft soils at Cheongra District, Songdo District in Incheon City, the west coast of Gyeonggi province, and Sihwa District in Ansan city. The correlations among compression index, and in-situ vane shear test, and cone resistance were obtained. The variations of liquid limit, plasticity index, water content and compression index with respect to depth exhibit strong similarity. This means that they have strong correlations, which can be used to evaluate the local characteristics of the study area. Thus, the correlations between compression index and physical properties were analysed to investigate the engineering characteristics of soft soil in the study area. The relationships between the measured piezocone factor by empirical methods, and undrained shear strength obtained by triaxial compression test or in-situ vane shear test were compared. It shows the significant correlation and piezocone factors, $N_{kT}$are suggested for the study area.
Keywords
Piezocone penetration test; Compression index; Piezocone factors; Undrained shear strength;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 한국토지공사(1999), 연약지반의 압밀특성에 관한 연구 I, pp. 214-235.
2 Azzouz, A. S., Krizek, R. J. and Corotis, R. B.(1976), Regression Analysis of Soil Compressibility, Soil and Foundation, Vol. 16, No. 2, pp. 19-29.   DOI
3 Herrero, O. R.(1983), Universal Compression Index Equation; Closure, Journal of Geotechchical Engineering Division, Vol. 109, No. 5, pp. 755-761.   DOI
4 Hong, S. J., Kim, D. H., Choi, Y. M., and Lee, W. J(2011), Prediction of Compression Index of Busan and Inchon Clays Considering Sedimentation State, Journal of The Korean Geotechnical Society, Vol. 27, No. 9, pp. 37-46.   DOI   ScienceOn
5 Jang, J. W., Choi, S. M., and Park, C. S(2001), A Study on the Relatonship between the Physical Properties of Soil and the Compression Index of Soft Clay in Gyungnam coastal Region, Journal of Korean Society of Coastal and Ocean Engineers, Vol. 13, No. 4, pp. 282-289.
6 Kim, J. H., Kim, Y. U., Cho, S. M., and Kim, M. M(2000), Comparison of CPTU and DMT results on Inchon International Airport Marine Soils, Journal of The Korean Geotechnical Society, Vol. 16, No. 6, pp. 23-33.
7 Kim, J. K., Kim, Y. U., Choi, I. G., and Park, Y. M(2001), Estimation of Geotechnical Characteristics at of the Marine Clay at Inchon International Airport Marine Clay Using Piezocone and Dilatometer Tests, Journal of The Korean Geotechnical Society, Vol. 17, No. 2, pp. 41-49.
8 Kjekstad, O., Lunne, T. and Clausen, C. J. F.(1978), Comparison between In-situ Cone Resistance and Laboratory Strength for Overconsolidated North Sea Clays, Marine Geotechnology, Vol. 3, No. 1, pp. 23-36.   DOI   ScienceOn
9 Lee, S. J(1997), Estimations of Geotechnical Properties from Piezocone Penetration Tests in South Korea, PhD. Dissertation, University of Seoul, pp. 42-95.
10 Lunne, T., Eide, O. and De Ruiter, J.(1976), Correlation between Cone Resistance and Vane Shear Strength in Some Scandinavian Soft to Medium Stiff Clays, Canadian Geotechnical Journal, Vol. 13, No. 4, pp. 430-431.   DOI
11 Mayne, P. W.(1980), Cam Clay Predictions of Undrained Strength, Journal of Geotechnical Engineering Division, Vol. 106, No. 11, pp. 1219-1242.
12 Nishida, Y.(1956), A Brief Note on Compression Index of Soil, Journal of Soil Mechnics and Foundation Engineering, Vol. 82, No. 3, pp. 1-14.
13 Park, Y., and Lim, H. D(2011), Prediction Equation of Compulsory Replacement Depth of Silty Layer in Sihwa Region, Journal of The Korean Geotechnical Society, Vol. 27, No. 9, pp. 55-66.   DOI   ScienceOn
14 Song, M. S(1988), Relationship of Soil Parameters of Marine Clay in the South Korea, Master's Dissertation, University of Hanyang, pp. 20-35.
15 Terzaghi, K. and Peck, R. B.(1967), Soil Mechanics in Engineering practice, 2nd Ed., John Wiley and Sons, New York, pp. 394-413.
16 Yoon, G. L., Gee, S. H., Lee, Y. G., and Lee, M. S(1996), Undrained Shear Strenth by Piezocone and Filed Vane Test, KGS Fall '96 National Conference, pp. 285-294.