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http://dx.doi.org/10.7843/kgs.2008.24.6.95

Study on the Method of Determining Equivalent Circle of Band-shaped Prefabricated Vertical Drains  

You, Seung-Kyong (Dept. of Civil Engrg., Myongji College)
Oda, Kazuhiro (Dept. of Civil Engrg., Osaka Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.24, no.6, 2008 , pp. 95-100 More about this Journal
Abstract
In the design of ground improvement using band-shaped prefabricated vertical drains (PVD), it is required to determine a reasonable equivalent circle of PVDs. In this paper, a series of numerical analyses on soft clay ground improved by PVD were carried out in order to investigate the resonable equivalent circle of PVD considering consolidation behavior of improved soft clay ground by PVD. The applicability of numerical analyses, in which an elasto-viscoplastic three-dimensional consolidation finite element method was applied, could be confirmed comparing with consolidation behavior simulated at the laboratory. And, through the results of the numerical analyses, consolidation behaviors of soft clay ground with elapsed time were elucidated, together with the equivalent circle of PVD considering consolidation behaviors.
Keywords
Consolidation; Equivalent circle; Numerical analysis; PVD method; Soft clay;
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