Investigation of Factors Affecting Vertical Drain Behavior
This article has been corrected.
VIEW CORRECTIONPublication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 125, Issue 3
Abstract
Some influencing factors on vertical drain behavior were investigated by laboratory tests as well as by back-analyses of test embankments on vertical drain improved subsoil at Saga Airport, Saga, Japan. Based on the results from this study, suggestions are made on determining the design parameters for vertical drain improvement. For the discharge capacity test of a prefabricated vertical drain, confining the drain in clay is essential. Also, due to the creep of the filter and the clogging caused by the fine particles entering the drainage channel, the long-term discharge capacity is significantly smaller than the short-term one, and this should be considered in design. For smear effect, a new equation is proposed for determining the ratio of the hydraulic conductivity of the natural subsoil to that of the smear zone, which considers the fact that laboratory tests normally underestimate the hydraulic conductivity of natural deposits. Regarding the effect of the sand mat, the numerical analysis results in this study show that if the hydraulic conductivity of sand is larger than 10−4 m/s, the assumption of a free drainage condition in the sand mat may not result in significant error. Finally, a methodology of predicting the behavior of vertical drain improved subsoil is proposed.
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References
1.
Barron, R. A. ( 1948). “Consolidation of fine-grained soils by drain wells.” Trans. ASCE, 113, 718–742.
2.
Bergado, D. T., Anderson, L. R., Miura, N., and Balasubramaniam, A. S. ( 1996). Soft ground improvement, in lowland and other environments . ASCE, New York, 427.
3.
Britto, A. M., and Gunn, M. J. ( 1987). Critical state soil mechanics via finite elements . Ellis Horwood, Chichester, U.K., 488.
4.
Chai, J. C., and Bergado, D. T. ( 1993). “Performance of reinforced embankment on Muar clay deposit.” Soils and Found., Tokyo, 33(4), 1–17.
5.
Chai, J. C., Bergado, D. T., Miura, N., and Sakajo, S. ( 1996). “Back calculated field effect of vertical drain.” Proc. 2nd Int. Conf. Soft Soil Engrg., Vol. 1, Hohai University, Nanjing, China, 270–275.
6.
Chai, J. C., Miura, N., and Sakajo, S. ( 1997). “A theoretical study on smear effect around vertical drain.” Proc. 14th Int. Conf. Soil Mech. and Found. Engrg., Vol. 3, Balkema, Rotterdam, The Netherlands, 1581–1584.
7.
Chai, J. C., Miura, N., Sakajo, S., and Bergado, D. T. ( 1995). “Behavior of vertical drain improved subsoil under embankment loading.” Soils and Found., Tokyo, 35(4), 49–61.
8.
Hansbo, S. ( 1979). “Consolidation of clay by band shaped prefabricated drains.” Ground Engrg., London, 12(5), 16–25.
9.
Hansbo, S. ( 1981). “Consolidation of fine-grained soils by prefabricated drains.” Proc. 10th Int. Conf. Soil Mech. and Found. Engrg., Vol. 3, International Society of Soil Mechanics and Foundation Engineering, Stockholm, 677–682.
10.
Hansbo, S. ( 1983). “How to evaluate the properties of prefabricated drains.” Proc. 8th Eur. Conf. Soil Mech. and Found. Engrg., Vol. 2, Balkema, Rotterdam, The Netherlands, 621–626.
11.
Hansbo, S. ( 1987). “Design aspects of vertical drains and lime column installations.” Proc. 9th Southeast Asian Geotech. Conf., Vol. 2, Southeast Asian Geotechnical Society, Bangkok, Thailand, 8-1–8-12.
12.
Jamiolkowski, M., and Lancellotta, R. ( 1981). “Consolidation by vertical drains: Uncertainties involved in prediction of settlement rates.” Proc. 10th Int. Conf. Soil Mech. and Found. Engrg., Vol. 4, Balkema, Rotterdam, The Netherlands, 593–595.
13.
Jamiolkowski, M., Lancellotta, R., and Wolski, W. ( 1983). “Pre-compression and speeding up consolidation, general report.” Spec. Session 6, Proc. 8th Eur. Conf. Soil Mech. and Found. Engrg., Balkema, Rotterdam, The Netherlands, 1201–1226.
14.
Madhav, R., Park, Y. M., and Miura, N. ( 1993). “Modelling and study of smear zones around band shaped drains.” Soils and Found., Tokyo, 33(4), 135–147.
15.
Mayne, P. E., and Kulhawy, F. H. (1982). “K0-OCR relationships in soils.”J. Geotech. Engrg. Div., ASCE, 108(6), 851–872.
16.
Miura, N., Chai, J. C., and Toyota, K. ( 1998). “Investigation on some factors affecting discharge capacity of prefabricated vertical drain.” Proc. 6th Int. Conf. on Geosynthetics, International Geosynthetics Society, Atlanta, 845–850.
17.
Miura, N., Park, Y. M., and Madhav, M. R. (1993). “Fundamental study on the discharge capacity of plastic board drain.”J. Geotech. Engrg., Tokyo, 35, 035(III), 31–40 (in Japanese).
18.
Onoue, A. ( 1991). “Permeability of disturbed zone around vertical drains.” 26th Annu. Meeting of the Japan Geotech. Soc., 2015–2018 (in Japanese).
19.
Park, Y. M. ( 1994). “A research on the mechanical properties of lowland marine clay and vertical drain improvement method,” Doctor of Engineering thesis, Saga University, Japan.
20.
Rixner, J. J., Kraemer, S. R., and Smith, A. D. ( 1986). “Prefabricated vertical drains.” Engrg. Guidelines, FWHA/RD-86/168, Vol. I, Federal Highway Administration, Washington, D.C.
21.
Roscoe, K. H., and Burland, J. B. ( 1968). “On the generalized stress-strain behavior of `wet' clay.” Engineering plasticity, J. Heyman and F. A. Leckie, eds., Cambridge University Press, Cambridge, U.K., 535–609.
22.
Tavenas, F., Tremblay, M., Larouche, G., and Leroueil, S. ( 1986). “In situ measurement of permeability in soft clays.” ASCE Spec. Conf. on Use of in Situ Tests in Geotech. Engrg., ASCE, New York, 1034–1048.
23.
Taylor, D. W. ( 1948). Fundamentals of soil mechanics . Wiley, New York.
24.
Yoshikuni, H. ( 1979). Design and construction control of vertical drain methods, Gihoto, Tokyo (in Japanese).
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Received: Jun 27, 1997
Published online: Mar 1, 1999
Published in print: Mar 1999
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