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http://dx.doi.org/10.7843/kgs.2013.29.1.109

Undrained Characteristics of Geogrid-Encased Stone Column under Cyclic Load Using Reduced-Scale Model Tests  

Choi, Jin-Wook (Dept of Mega Building and Bridge, Sungkyunkwan Univ.)
Lee, Dae-Young (Geotechnical Engrg Division, KICT)
Yoo, Chung-Sik (Dept. of Civil Engrg., Sungkyunkwan Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.29, no.1, 2013 , pp. 109-120 More about this Journal
Abstract
This paper presents the results of a laboratory investigation into a study on undrained characteristics of a geogrid-encased stone column (GESC) installed in soft clay under cyclic load. In order to analyze behavior of settlement, pore water pressure, stress concentration ratio and strain of the GESC compared to a stone column, a series of reduced-scale laboratory tests were performed. The model tests show that GESC provides a simple and effective method of deformation resistance and settlement restraint when a short-term cyclic load is applied. The maximum strain of geogrid occurred at 1.2D and 1.5D from the top of the column. This paper highlights the importance of considering overlay effect and replacement ratio on cyclic load supporting GESC.
Keywords
Geogrid-encased; Stone column; Reduced-scale laboratory tests; Overlay effect; Replacement ratio;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Vesic, A. S. (1972), "Expansion of Cavities in Infinite Soil Mass", Journal of the Soil Mechanics and Foundation Engineering Division, ASCE, Vol.98, No.SM3, pp.265-290.
2 Yoo, C. S. (2010). "Performance of geosynthetic-encased stone columns in embankment construction:Numerical investigation", Journal of Geotechnical and environmental engineering, Vol.136, No.8, pp.1148-1160.   DOI   ScienceOn
3 Yoo, C. S., Song, A. R., Kim, S. B., and Lee, D. Y. (2007), "Finite Element Modeling of Geogrid-Encased Stone Column in Soft Ground", Journal of Korean Geotechnical Society(KGS), Vol.23, No.10, pp.133-150.   과학기술학회마을
4 Yoshikuni, H. (1979), "Design and construction management of verical drain method", Soils and Foundation series, Gihoudou, Tokyo, Japan (in Japanese)
5 Barksdale, R. D. and Bachus, R. C. (1983), "Design and construction of stone columns", U.S. Federal Highway Administration Report, FHWA/RD-83/026
6 Bhandari, A. and Han, J. (2010), "Investigation of geotextile-soil interaction under a cyclic vertical load using the discrete element method", Geotextile and Geomembranes, Vol.28, pp.33-43.   DOI   ScienceOn
7 Castro J. and Sagaseta, C. (2011), "Deformation and consolidation around encased stone columns", Geotextiles and Geomembranes, Vol.29, pp.268-276.   DOI   ScienceOn
8 Gniel, J. and Bouazza, A. (2010), "Construction of geogrid encased stone columns: A new proposal based on laboratory testing", Geotextile and Geomembranes Vol.28, pp.108-118.   DOI   ScienceOn
9 Greenwood, D. A. (1970), "Mechnical Improvement of Soils Below Ground Surface", Proc., Ground Engineering Conference, Institution of Civil Engineers, pp.11-22.
10 Aboshi, H. and Suematsu, N. (1985), "Sand compaction pile method: state-of-the-art paper", In Proceedings of the 3rd International Geotechnical Seminar on Soil Improvement Methods, Nanyang Technological Institute, Singapore, pp.38-44.
11 Alexiew, D., Horgan, G. J., and Brokemper, D. (2003), "Geotextile encased columns(GEC): load capacity & geotextile selection, Sweden.", BGA International Conference on Foundation.
12 Handy, R. L. (2001), "Does Lateral Stress Really Influence Settlement", Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol.127, No.7, pp.623-626.   DOI   ScienceOn
13 Henkel, D. J. and Gilbert, G. D. (1952), "The effect of the rubber membrane on the measured triaxial compression strenth of clay samples." Geotechnique, Vol.3, No.1, pp.20-29.   DOI
14 Lee, D. Y., Song, A. R., and Yoo, C. S. (2006), "Load Carrying Capacity and Failure Mechanism of Geogrid Reinforced Stone Columns : Reduced-Scale Model Tests", Journal of Korean Geotechnical Society(KGS), Vol.22, No.10, pp.1078-1084.   과학기술학회마을
15 Hughes, J. M. O., Withers, N. J., and Greenwood, D. A. (1975), "A Field Trial of Reinforcing Effects of Stone Columns in Soil", Geotechnique, Vol.25, No.1, pp.31-44.   DOI   ScienceOn
16 Kempert, H. G., Wallis, P., Raithel, M., Geduhn, M., and McClinton, R. G. (2002), "Reclaiming land with geotextile-encased columns", Geotechnical fabrics Report, Vol. 20, No.6, pp.34-39.
17 Lee, D. Y. and Yoo, C. S. (2011), "Load carrying capacity of geogridencased stone column", International Symposium of Korean Geosynthetics Society, Seoul, South Korea, pp.127-134.
18 Murugesan, S. and Rajagopal, K. (2006), "Geosynthetic-encased stone column; Numerical evaluation", Geotextiles and Geomembranes, Vol.24, pp.349-358.   DOI   ScienceOn
19 Murugesan, S. and Rajagopal, K. (2010), "Studies on the Behavior of single and group of Geosynthetic Encased Stone Columns", Journal of Geotechnical and environmental engineering, Vol.136, No.1, pp.129-139.   DOI   ScienceOn
20 Paul, A. and Ponomarjow, A. (2004), "The bearing behaviour ofgeogrid reinforced crushed stone columns in comparison to nonreinforcedconcrete pile foundations", EUROGEO 3. GeotechnicalEngineering with Geosynthetics, Munich, Germany
21 Pulko, B., Majes, B., and Logar, J. (2011), "Geosynthetic-encased stone columns: Analytical calculation model", Geotextiles and Geomembranes, Vol.29, pp.29-39.   DOI   ScienceOn
22 Tafreshi, S. N. and Dawson, A. R. (2012), "A comparison of static and cyclic loading responses of foundations on geocell-reinforced sand", Geotextile and Geomembranes, Vol.32, pp.55-68.   DOI   ScienceOn