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자료유형
학술대회자료
저자정보
함태규 (한국건설기술연구원) 서세관 (한국걸설기술연구원) 조삼덕 (한국건설기술연구원) 양기석 (한국항만기술단) 유승경 (명지전문대학)
저널정보
한국지반신소재학회 한국지반신소재학회 학술발표회 2008 한국토목섬유학회 가을 학술발표회 논문집
발행연도
2008.11
수록면
67 - 81 (15page)

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초록· 키워드

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This study, as basic research which was intended to develope the surface reinforcement method using reinforcement material which is applicable to very soft ground in Korea, was aimed at proposing the design parameter for the surface ground improvement method. To that end, a wide width tensile test using geotextile, geogrid and steel bar (substitute for bamboo) and 25 kinds of the laboratory model tests with the end restraint conditions of the reinforcement that comprises the constrained and partially constrained (3 types) conditions were conducted. And the result indicated that the modulus of subgrade reaction or N<SUB>c</SUB> value (5.3) apparently overestimated the bearing capacity of very soft ground such as dredged ground. and An angle of inclination, θ, between reinforcement and horizontal surface was distributed from 38˚ to 50˚ for geotextile, from 45˚ to 50˚ for geogrid and from 14˚ to 16˚ for steel bar. A radius of heaving, r, of clay ground by vertical weight at side was distributed from 0.6m to 0.7m for geotextile, from O.5m to 0.8m for geogrid, and from 2.4m to 3.0m for steel bar. In case of steel bar, r was 4 times that of geotextile. Moreover, as a result of model test by partially constraining the preload of 23.0㎏f using geotextile, the effect of bearing capacity(q₂) appeared to be the largest till the loading stress was 0.4tf/㎡ due to cohesion, while it reached 75% of the maximum bearing force after 0.4tf/㎡ due to increase in the effect of bearing capacity(q₂) caused by the tensile force of the reinforcement. Such results tended to have appeared constantly or very similarly with each other, irrespective of the type of reinforcement (geogrid, steel bar) and constraint conditions.

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개요(SYNOPSIS)
1. 서론
2. 이론적 배경
3. 실내모형실험
4. 설계정수 산정 결과
5. 결론
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UCI(KEPA) : I410-ECN-0101-2010-532-003217341