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http://dx.doi.org/10.7843/kgs.2008.24.11.35

Evaluation of Stress Distribution Ratio According to Clay Ground Condition and Stone Column Characteristics  

Kim, Dong-Eun (Korea Institute of Environmental Science and Technology)
Park, Hyun-Il (Research Center, Samsung E & C)
Lee, Seung-Rae (Dept. of Civil Engrg., KAIST)
You, Sang-Ho (Dept. of Civil Engrg., Pusan Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.24, no.11, 2008 , pp. 35-41 More about this Journal
Abstract
Stone columns, one of the soft ground improvement techniques, are being used for not only accelerating consolidation but also increasing bearing capacity of soft grounds. In this study, in order to observe the stress distribution characteristics which are one of the important factors to estimate the settlement reduction of the soft ground, lab-scale experiments were performed in stone column reinforced clay ground. The stress distribution ratio of stone column decreased with the lapse of time after surcharge loading but increased as the stiffness of clay deposit increases. It shows that the modified Baumann and Bauer's solution, which is able to easily predict the stress distribution ratio of stone column reinforced soft ground, exhibits reasonable agreement with the measured data.
Keywords
Reinforcement; Stone column; Stress distribution ratio; Soft ground; Clay;
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  • Reference
1 이윤주 (1996), 연약점토지반에 있는 Stone Column의 지지력 산 정, 한국해양공학회논문집, 제 10권, 제 4호, pp.141-148
2 Barksdale, R.D., and Bachus, R.C. (1983), Design and construction of stone columns. Vol.1. Report No. FHWA/RD-83/026, National Technical Information Service. Springfield, Virginia, USA
3 Baumann, V. and Bauer, G.E.A. (1974), The Performance of Foundation on Various Soils Stabilizes by the Vibro-Compaction Method. CAN. GEOTECH. J., VOL.11, pp.509-530   DOI
4 윤충섭, 김호일 (1989), 조립재가 흙의 역학적 특성에 미치는 영 향, 한국농공학회논문집, 제 31권, 제 3호, pp.57-69
5 이대영, 오승빈, 유충식 (2006), 대형직접전단시험에 의한 Stone Column재료의 전단거동 특성, 대한토목학회 학술발표회, pp.659-662
6 Shin, H. Y. (2005), "Analysis on the behavior of composite ground reinforced by sand compaction pile with low area replacement ratio", PhD dissertation, Chungang Univ, Korea, pp.225-226
7 Alamgir, M. and Miura N. (1997), Prediction of the settlement response of soft ground improved by columnar inclusions, Proc, 30th year anniversary symposium of the southeast asian geotechnical society, Bangkok, pp.164-177
8 Hughes, J.M.O., Withers, N. J. and Greenwood, D. A. (1975), A field trial of the reinforcing effect of a stone column in soil. Geotechnique, Vol.25, No.1, pp.34-44
9 Yamagata, K., and Hukumoto, K. (1982), "Stress ratio of a sand pile and cohesive soil in composite ground", $17^{th}$ JSSMFE Conf., pp.2417-2420
10 박종관, 김영욱, 이인모 (1993), 화강풍화토의 동적물성치와 침하 특성에 관한 연구, 한국지반공학회논문집, 제 9권, 제 2호, pp.5-13