연약지반에 시공되는 지오그리드 감쌈 스톤컬럼의 하중지지 특성
Load Carrying Capacity of Geogrid-Encased Stone Columns in Soft Ground
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
This paper presents the results of numerical investigation on support mechanism of geogrid-encased stone columns for use in soft ground. A number of cases were analyzed using a axial- and 3D stress-pore pressure coupled model that can effectively model construction sequence and drainage as well as reinforcing effects of geogrid-encased stone columns. The results indicated that the geogrid encasement tends to significantly improve the load carrying of a stone column. Also revealed was that such a confinement effect depends on encasement length and stiffness of geogrid. It is also shown that there exist critical encasement length and stiffness of geogrid for a given condition.
Abstract
This paper presents the results of numerical investigation on support mechanism of geogrid-encased stone columns for use in soft ground. A number of cases were analyzed using a axial- and 3D stress-pore pressure coupled model that can effectively model construction sequence and drainage as well as reinforcing effects of geogrid-encased stone columns. The results indicated that the geogrid encasement tends to significantly improve the load carrying of a stone column. Also revealed was that such a confinement effect depends on encasement length and stiffness of geogrid. It is also shown that there exist critical encasement length and stiffness of geogrid for a given condition.
참고문헌 (7)
- 유충식, "연약지반위에 시 공되는 지오그리드 보강 쇄석기둥 공법의 유한요소모델 링", 한국지반공학회논문집, 23(10), pp.133~150 (2007)
- 이대영, "지오그리드 보강 스톤컬 럼의 파괴메커니즘 및 지지력 측성: 축소모형실험을 통한 고찰", 한국지반공학회논문집, 22(10), pp.121~129 (2006)
- Alexiew, D, "Geotextile encased columns(GEC): load capacity & geotextile selection, Sweden", BGA International Conference on Foundation (2003)
- Ai-Joulani,M, "Laboratory and analytical investigation of sleeve reinforced stone columns", 석사, pp.1995
- Hibbitt, Karlsson, "Abaqus users manual, Version 6.7" (2007), Inc. Pawtucket, Providence
- Kempfert, H. G, "Reclaiming land with geotextileencased columns", Geotechnical fabrics Report, 20(6), pp.34~39 (2002)
- Prisco, C, "Geo-reinforced sand columns : Small scale experimental tests and theoretical modelling", Geosynthetics -8th ICG, pp.1685~1688 (2006)