Browse > Article
http://dx.doi.org/10.7843/kgs.2011.27.4.077

Experimental Study on Consolidation Behavior of the Smeared Soil for Various Spacing Ratios of Vertical Drains  

Yune, Chan-Young (Dept. of Civil Engrg., Gangneung-Wonju National Univ.)
Kang, Hee-Woong (Dept. of Civil Engrg., Gangneung-Wonju National Univ.)
Jung, Young-Hoon (Dept. of Civil Engrg., Gangneung-Wonju National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.27, no.4, 2011 , pp. 77-87 More about this Journal
Abstract
To investigate the effect of drainage spacing and smear on the rate of consolidation and the efficiency of vertical drain method, a series of consolidation tests with a large consolidation chamber and special equipment for inserting mandrels were conducted. As the smeared region increases, total settlement in over-consolidated clay increases whereas apparent change in settlement does not appear in normally consolidated clay. Vertical drain generally accelerates the rate of consolidation, while it could also deteriorate the efficiency of vertical drain method even for the decreasing drainage length and spacing ratio.
Keywords
Consolidation; Smear; Drain spacing; Mandrel; Vertical drain;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Rowe, P. W. and Barden, L. (1966), A new consolidation cell, Geotechnique, Vol.16, No.2, pp.162-170.   DOI
2 Hansbo, S. (1981) "Consolidation of fine-grained soils by prefabricated drains", Proc. 10th Int. Conf. Soil Mech. Found. Eng., Stockholm, Sweden Vol.3, paper 12/22, 677-682.
3 Hird, C. C., Moseley, V. J. (2000), Model study of seepage in smear zones around vertical drains in layered soil, Geotechnique, Vol.50, No.1, pp.89-97.   DOI   ScienceOn
4 Indraratna, B. and Redana, I. W. (1998), Laboratory Determination of Smear Zone due to Vertical Drain Installation, Journal of Geotechnical and Geoenvironmental Engineering, Vol.124, No.2, pp. 180-184.   DOI   ScienceOn
5 McKinlay, D. G. (1961), A Laboratory Study of Rates of Consolidation in Clays With Particular Reference to Conditions of Radial Porewater Drainage, 5th ICSMFE, Vol.1, pp.225-228.
6 윤찬영, 조경진, 정충기 (2008), 다층지반 및 스미어 경계면 해석을 위한 유한차분 압밀해석 기법, 대한토목학회논문집 제 28권 제 5C호, pp.283-292.
7 Almeida, M. S. S., Santa Maria, P. E. L., Martins, I. S. M., Spotti, A. P., Coelho, L. B. M. (2000), Consolidation of a very soft clay with vertical drains, Geotechnique, Vol.50, No.6, pp.633-643.   DOI   ScienceOn
8 박영목 (2003), "맨드렐 관입에 기인하는 스미어 존의 평가", 한국지반공학회논문집, 제 19권, 제 6호, pp.217-225.
9 김수삼, 장연수, 고경환 (1997), "스미어존 형성과 투수성 변화에 미치는 멘드렐의 영향에 관한 연구", 한국지반공학회지, 제 13권, 제 5호, pp.45-57.
10 김홍택, 황정순, 김승욱, 한연진, 유찬호 (2006), "연직배수재 타설시 발생되는 스미어 죤의 평가", 한국지반환경공학회논문집, pp. 43-52.
11 Sathananthan, I. and Indraratna, B. (2006), Laboratory evaluation of smear zone and correlation between permeability and moisture content, Journal of Geotechnical and Geoenvironmental Engineering, Vol.132, No.7, pp.942-945.   DOI   ScienceOn
12 Bergado, D. T., Asakami, H., Alfaro, M. C., and Balasubramamiam, A.S. (1991) "Smear effects of vertical drains on soft Bangkok clay", J. Geotech. Engrg., ASCE 117(10), 1509-1530.   DOI
13 Bo Myint Win., Bawajee, R., Chu, J. Choa, V. (2000), Investigation of smear zone around vertical drain, 3rd International Conference on Ground Improvement Techniques, pp.109-114.
14 Escario, V. and Uriel, S. (1961), Determining the Coefficient of Consolidation and Horizontal Permeability by Radial Drainage, 5th ICSMFE, Vol.1, pp.83-87.
15 Atkinson, J.H., Evans, J.S., and Ho, E.W.L. (1985) Non-uniformity of triaxial samples due to consolidation with radial drainage. Geotechnique, Vol.35, No.3, pp.353-355.   DOI
16 박영목, 서정유, 김재석, 유연재 (2007), "맨드렐 관입길이에 따른 연약지반 스미어 존의 특성에 관한 연구", 대한토목학회지, 제 10호, pp.2127-2130.
17 Hansbo, S. (1979) "Consolidation of Clay by Band-shaped Prefabricated Drains", Ground Engineering, Vol.12, No.5, 21-25.
18 Barron, R. A. (1948), "Consolidation of Fine-Grained Soils by Drain Wells", Trans, ASCE, 2346, 221-228.
19 윤찬영, 손대진, 천성호, 정충기 (2009), 스미어로 의한 점성토 지반의 간극비 및 투수계수의 위치별 차이와 압밀 중 변화 거동에 대한 연구: Part I 실험 및 거동 분석, 대한토목학회논문집 제29권 제4C호, pp.137-144.
20 김경오, 김유석 (2007), "멘드렐 관입에 의한 연약점토의 교란범위 산정을 위한 원심모형실험", 대한토목학회지, 제 10호, pp.2140-2143.
21 Onoue, A., Ting, N., Germain, J. T. and Whitman, V. (1992), Permeability of Disturbed Zone Around Vertical Drains, Applied Ground Improvement Techniques, Vol.2, pp.163-174, Bangkok, Thailand.
22 Sharma, J. S., Xiao, D. (2000), Characterization of a smear zone around vertical drains by large-scale laboratory tests, Can. Geotech. J., Vol.37, pp.1265-1271.   DOI   ScienceOn
23 Shields, D. H. and Rowe, P. W. (1965), Radial Drainage Oedometer for Laminated Clays, Journal of the Soil Mechanics and Foundation Division, ASCE, Vol.91, No.SM1, pp.15-23.
24 Prawono, S. (1981), Sand Drain Model by Central Drain Oedometer, 10th ICSMFE, Vol.1, pp.745-750.
25 Pyrah, I.C., Smith, I.G.N., Hull, D. and Tanaka, Y. (1999), Nonuniform consolidation around vertical drains installed in soft ground. Geotechnical Engineering for Transportation Infrastructure, Balkema, pp.1563-1569.
26 Trautwein, S. J., Olson, R. E. and Thomas, R. L. (1981), Radial Flow Consolidation Testing, 10th ICSMFE, Vol.1, pp.811-814.