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표층처리공법으로 개량된 초연약지반의 침하거동에 미치는 영향인자 분석
유승경,이종선,함태규,양기석,조삼덕,최항석,You, Seung-Kyong,Lee, Jong-Sun,Ham, Tae-Gew,Yang, Kee-Suk,Cho, Sam-Deok,Choi, Hang-Seok 한국지반공학회 2008 한국지반공학회논문집 Vol.24 No.12
It is necessary to develop a rational design method for surface reinforcement of very soft ground because most current design works rely on merely crude empirical correlations. In this paper, the mechanical behavior of very soft ground that is surficially reinforced was investigated with the aid of a series of numerical analyses. Several material properties of each dredged soft ground, reinforcement and backfill sand mat have been exercised in the numerical analysis. The result of numerical analysis was compared with those of the laboratory model test. Through the matching process between the numerical and experimental result, it is possible to determine representative material properties of the dredged soft ground, reinforcements and backfill sand mat. These verified material properties permit to evaluate the effect of the stiffness of reinforcement and the thickness of sand mat on the overall deformation of the reinforced soft ground.
표층처리된 초연약지반의 침하거동에 미치는 표면건조층의 영향에 대한 수치해석
유승경(Seung-Kyong You),이종선(Jongsun Lee),양기석(Kee-Suk Yang),조삼덕(Sam-Deok Cho),함태규(Tae-Gew Ham),최항석(Hangseok Choi) 한국토목섬유학회 2009 한국토목섬유학회 학술발표회 Vol.2009 No.4
It is necessary to develop a rational design method for surface reinforcement of very soft ground because most current design works rely on merely crude empirical correlations. In this paper, the mechanical behavior of very soft ground that is surficially reinforced was investigated with the aid of a series of numerical analysis. Several material properties of each dredged soft ground, reinforcement and backfill sand mat have been exercised in the numerical analysis. The result of numerical analysis was compared with those of the laboratory model test. Through the matching process between the numerical and experimental result, it is possible to determine representative material properties of the dredged soft ground, reinforcements and backfill sand mat. These verified material properties permit to evaluate the effect of the surface desiccation on the overall deformation of the reinforced soft ground.
심경미(Shim, Kyoung-Mi),곽노경(Kwak, No-Kyung),양기석(Yang, Kee-Suk),이송(Lee, Song) 한국구조물진단유지관리학회 2010 한국구조물진단학회 학술발표회논문집 Vol.2010 No.2
Dredged soils by pump dredging vessel applied to large-scale reclamation projects have high water content on totally disturbed state. So, construction equipment even can not enter dredged site. However the study of surface ground reinforcing method is supposed to be considered preferentially is not satisfied and also doesn't contemplate plastic flow because of repetitive drive of construction equipment. Also, Terzaghi's bearing-capacity equation and Yamanouchi's suggestion have been used to design the surface reinforcement, but most engineers depend on their experience and cases constructed before because of dispersed variables and inappropriate bearing-capacity factors. Hence, plate load test and repetitive plate load test are performed in the field which is reinforced with geotextile(30ton/m), geogrid(20ton/m, 10ton/m) and bamboo(0.4m?0.4m). The object of this study is that bearing capacity and behaviour of surface ground are evaluated and compared to each reinforcement form test results.
심경미 ( Shim Kyoung-mi ),곽노경 ( Kwak No-kyung ),양기석 ( Yang Kee-suk ),이송 ( Lee Song ) 한국구조물진단유지관리공학회 2010 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.14 No.2
Dredged soils by pump dredging vessel applied to large-scale reclamation projects have high water content on totally disturbed state. So, construction equipment even can not enter dredged site. However the study of surface ground reinforcing method is supposed to be considered preferentially is not satisfied and also doesn't contemplate plastic flow because of repetitive drive of construction equipment. Also, Terzaghi's bearing-capacity equation and Yamanouchi's suggestion have been used to design the surface reinforcement, but most engineers depend on their experience and cases constructed before because of dispersed variables and inappropriate bearing-capacity factors. Hence, plate load test and repetitive plate load test are performed in the field which is reinforced with geotextile(30ton/m), geogrid(20ton/m, 10ton/m) and bamboo(0.4m X 0.4m). The object of this study is that bearing capacity and behaviour of surface ground are evaluated and compared to each reinforcement form test results.