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지오그리드 보강 Stone Column의 장·단기 지지력 특성 : 유한요소해석을 통한 고찰
이대영(Daeyoung Lee),김선빈(Sunbin Kim),송아란(Ahran Song),유충식(Chungsik Yoo) 한국토목섬유학회 2006 한국토목섬유학회 학술발표회 Vol.2006 No.4
The stone column method is widely used in Europe as an alternative to conventional pile foundations. Several benefits of using the stone column method include sound performance, low cost, expediency of construction, and liquiefaction resistance, among others. Recently, geosynthetic-encased stone column approach has been developed to improve its' load carrying capacity through increasing confinement effect. Although such a concept has successfully applied in practice, fundamentals of the method have not been fully explored. This paper presents the results of an investigation on the loading carriying capacity of geogrid-encased stone column using a series of 2D finite element analyses. The results of the analyses indicated improved short-and long-term carrying capacity of the geogrid-encased stone column method over the conventional strone column method with no encasing.