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http://dx.doi.org/10.7843/kgs.2006.22.10.121

Load Carrying Capacity and Failure Mechanism of Geogrid Reinforced Stone Columns : Reduced-Scale Model Tests  

Lee, Dae-Young (Geotechnical Engrg. Research Dept., KICT.)
Song, Ah-Ran (Dept. of Civil & Environmental Engrg., Sungkyunkwan Univ.)
Yoo, Chung-Sik (Dept. of Civil & Environmental Engrg., Sungkyunkwan Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.22, no.10, 2006 , pp. 121-129 More about this Journal
Abstract
Stone column is one of the ground improvement systems which is being used for accelerating consolidation and increasing bearing capacity for settlement sensitive structures like load embankments, bridge abutments, oil storage tanks etc. The effects of this method are enhancement of ground bearing capacity, reduction of settlement, prevention of liquefaction and prevention of lateral ground movement. Recently, geosynthetic reinforced (encased) stone column approach has been developed to improve its load carrying capacity through increasing confinement effect. Although such a concept has successfully been applied in practice, fundamentals of the method have not been fully explored. This paper presents the results of an investigation on the bearing capacity and failure mechanism of geogrid-encased stone column by model tests. The results of the analyses indicated improved bearing capacity of the geogrid reinforced stone column method over the conventional strone column method with no encasing.
Keywords
Bearing capacity; Geogrid; Ground improvement; Stone column; Model test;
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