대한토목학회논문집 (KSCE Journal of Civil and Environmental Engineering Research)

  • 제36권1호
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  • Pages.85-96
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  • 2016
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  • 1015-6348(pISSN)
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  • 2799-9629(eISSN)
대한토목학회 (Korean Society of Civil Engeneers)
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준설토의 퇴적형상과 수침조건에 따른 토목섬유 튜브 내 준설토의 콘 저항치에 관한 연구

A Study on the Shape and Cone Resistance of Dredged Fill in Geotextile Tube under Water and Drained Conditions

  • 김형주 (군산대학교 토목공학과) ;
  • 원명수 (군산대학교 토목공학과) ;
  • 이장백 (군산대학교 토목환경공학과) ;
  • 김영신 (군산대학교 토목환경공학과)
  • 투고 : 2015.06.02
  • 심사 : 2016.01.14
  • 발행 : 2016.02.01
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초록

본 연구에서는 채움모듈 형태에 따른 준설토의 퇴적분포와 튜브 형상 그리고 토목섬유 튜브의 수침조건에 따른 튜브 내 준설토의 콘 관입 저항특성을 규명하고자 일련의 시험을 수행하였다. 채움모듈 형태에 따른 아크릴 토조와 비닐 튜브 준설토의 퇴적분포를 관찰한 결과 I형 채움모듈은 분화구형상을 나타내고 역T형 채움모듈은 수평방향으로 균등하게 준설토가 퇴적되는 것으로 나타났다. 새만금 내부로부터 채취한 준설토의 채움 단계 별 튜브의 변형은 튜브로부터 배수가 종료됨과 거의 동시에 튜브의 변형이 수렴되고, 토목섬유 튜브 내 준설토의 콘 저항치는 배수의 경우가 수침 보다 2~6배정도 크게 나타났다.

A series of tests were conducted to examine the filled tube shape with respect to the filling module type used and to investigate cone resistance properties of a dredged-soil-filled geotextile tube under water and drained conditions. Results based on the filling observation showed that the distribution of the accumulated fills inside the acrylic cell and vinyl tubes differs with respect to the type of filling modules. A crater formation around the inlet area was found during the test using I-type filling module and a horizontal sediment distribution was found during the test using inverse T-Type filling module. The dredged fill material was obtained from the Saemangeum area. The geotextile tube deformation of each filling stage was almost converged when the tube was fully drained. The cone resistance of the dredged fill in the geotextile tube under drained condition is large and is approximately 2~6 times that of the tube under water condition.

키워드

참고문헌

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