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http://dx.doi.org/10.12652/Ksce.2012.32.6C.239

Prediction of Lateral Flow due to Embankments for Road Construction on Soft Grounds with Vertical Drains  

Hong, Won-Pyo (중앙대학교 건설환경플랜트공학과)
Kim, Jung-Hoon ((주)동명기술공단)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.32, no.6C, 2012 , pp. 239-247 More about this Journal
Abstract
Some methods were proposed to predict lateral flow due to embankments for road constructions on soft grounds, in which vertical drains were placed. In order to investigate the prediction methods of lateral flow, 200 field monitoring data for embankments in thirteen road construction sites at western and southern coastal areas of the Korean Peninsula were analyzed. For analyzing the relationship between the safety factor of embankment slope and the horizontal displacement in soft grounds where horizontal drain mats were placed, it was reliable to apply the maximum horizontal displacement in soft ground instead of the horizontal displacement at ground surface. The maximum horizontal displacement was developed less than 50mm in fields where the safety factor of slope was more than 1.4, while the one was developed more than 100mm in fields where the safety factor of slope was less than 1.2. In safe fields where the maximum horizontal displacement were developed within 50mm, lateral flow would not happen since shear deformation was not appeared. On the other hand, shear failure would happen in the fields where the maximum horizontal displacement were developed more than 100mm. In such fields, embankments might be continued after some appropriate countermeasures should be prepared. Safe embankments can be performed on soft grounds, in which the stability number is less than 3.0 and the safety factor for bearing is more than 1.7. However, if the stability number is more than 4.3 and the safety factor for bearing is less than 1.2, shear deformation would begin and even shear failure would happen.
Keywords
embankment; lateral displacement; soft ground; vertical drain; prediction of lateral flow;
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1 김재홍(2011) 측방유동 영향을 받는 해안매립 연약지반속 지하매설관에 관한 연구, 박사학위논문, 중앙대학교 대학원.
2 김정훈(2012) 도로성토로 인한 연약지반의 측방유동에 관한 연구, 박사학위논문, 제주대학교 대학원.
3 대한토목학회 부산.울산.경남지회(2004) 대구-부산간 고속도로 건설공사(제10공구) 성토사면 활동파괴 원인분석 및 대책공법 검토 보고서.
4 이광우(2006) 연약지반 측방유동 억지를 위한 토목섬유 보강 성토지지말뚝시스템의 설계법, 박사학위논문, 중앙대학교 대학원.
5 한국토지공사(1998) 지반구조물설계 시공시의 문제점 및 대책방안 워크샵, KICT 제10회 건설기술발표회, pp. 33-35.
6 홍원표(1994) 수동말뚝, 이진문화사.
7 홍원표, 이광우, 조삼덕, 이재호(2006) 성토하부 연약지반의 측방 유동평가, 한국지반공학회 논문집, 한국지반공학회, 제22권 제10호, pp. 93-100
8 Franke, E. (1977) German recommendations on passive piles, Proc, 9th ICSMFE, Specialty sessuon 10, Tokyo, pp. 193-194.
9 Hong, W.P. (2005) Lateral soil movement induced by unsymmetrical surcharges on soft grounds in Korea, IW-SHIGA2005, pp. 135-154.
10 Hong, W.P. and Lee, K.W. (2009) Evaluation of lateral movement of piled bridge abutment undergoing lateral soil movement in soft ground, Marine Georesources and Geotechnology, Vol. 27, pp. 177-189.   DOI
11 Leroueil, S., Magnan J.P., and Tavenas, F. (1990) Embankments on soft clays. Ellis Horwood.
12 Marche, R. and Chapuis, R. (1974) Contrle de la stabilit des remblais par la mesure des dplacements horizontaux, Canadian Geotechnical Journal, Vol. 11, No.1, pp. 182-201 (in French).   DOI
13 Peck, R. B. (1969) Deep Excavation and Tunneling in Soft Ground, Proc. 7th ICSMFE State of the Art Volume, pp. 225-290.
14 Tavenas, F., Mieussens, C., and Bourges, F.(1979), Lateral displacements in clay foundations under embankments, Canadian Geotechnical Journal, Vol. 16, pp. 532-550.   DOI
15 Tavenas F. and Leroueil, S. (1980) The behaviour of embankments on soft clay foundation, Canadian Geotechnical Journal, Vol. 17, pp. 236-260.   DOI   ScienceOn
16 Tschebotarioff, G.P. (1973) Foundations, retaining and earth structures, Mc Graw-Hill Kogakusha, Ltd., pp. 400-410.