실내실험 및 수치해석을 이용한 인공어초 세굴 거동 특성 연구
Scour Characteristics of Artificial Reef through Experiment and Numerical Analysis
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초록
본 연구에서는 실내실험 및 수치해석을 통해 무보강 및 보강 조건에 따른 인공어초의 세굴 특성을 알아보았다. 해저 지반보강재로는 지오그리드(geogrid)를 이용하였으며, 보강 면적은 인공어초 하부 면적 대비 1배, 3배 및 5배와 같이 다양한 배율로적용하였다. 2차원 흐름 수조 실험을 통해 모래 및 실트 지반에서 인공어초의 세굴 패턴을 알아보았으며, 실내실험과 동일한조건으로 수치해석을 수행하여 유속 벡터 분포 및 세굴 패턴을 알아보았다. 실내실험과 수치해석을 비교한 결과 세굴 패턴은전반적으로 유사한 경향을 띄었으며, 무보강 지반보다 보강재를 설치한 인공어초 지반에서 세굴이 감소하는 것으로 나타났다.
Abstract
This study investigated the scour characteristics of artificial reef according to unreinforced and reinforced artificial reefs through laboratory test and numerical analysis. In this study, geogrid was used as a reinforcement of seabed. Three different reinforced areas were selected; one time, three times and five times bottom area of artificial reef. Two-dimensional water channel test was carried out to investigate scour patten of sand and silt grounds. Numerical analysis was also performed to see the velocity vector and scouring patten around artificial reef which was same condition with experiment. The numerical results were in good agreements with the experimental test results. It was found that the geogrid-installed soft ground under artificial reef tends to reduce scour, compared to unreinforced soft ground.
참고문헌 (21)
- Ahn, S. J., "Experimental Study for scour Protection around Bridge Pier by Falling-Flow Interruption", Journal of Korean Society of Civil Engineering, 19(1), pp.57~65 (1999)
- Briaud, J. L., "Case Histories in Soil and Rock Erosion:Woodrow Wilson Bridge, Brazos River Meander, Normandy Cliffs, and New Orleans Levees", Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 134(10), pp.1425~1447 (2008)
- Abutment Scour in Cohesive Materials, "Briaud, J. L.", National Research Council: Transportation Research Board, ~, pp.Report 24-15(2) (2009)
- Briaud, J. L., "Erosion Function Apparatus for Scour Rate Predictions", Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 127(2), pp.105~113 (2001)
- Chen. X., "Numerical Study of Abutment Scour in Cohesive Soils", Doctor, pp.2008
- Choi, K. B., "Experimental Study on Local Scour around Bridge Piers by Scour Protection Devices", Journal of Korean Society of safety, 15(1), pp.126~131 (2000)
- Duzbastilar, F. O., "Recent developments on artificial reef applications in Turkey:hydraulic experiments", Bulletin of Marine Science, 78(1), pp.195~202 (2006)
- 김대권, "전남 고흥해역 연성지반의 인공어초의 침하 연구", 한국마린엔지니어링학회지, 34(1), pp.163~167 (2010), 한국마린엔지니어링학회
- Kim, H. T., "A Study of Artificial Reef Subsidence in Unsteady Flow Field", Journal of The Korean Society of Ocean Engineers, 15(2), pp.33~38 (2001)
- Kim, J. Q., "Experimental Study on the Local Scour and Embedment of Fish Reef by Wave Action in Shallow Water Depth", Proceeding of Civil Engineering in the Ocean, 12, pp.243~247 (1995)
- 김영상, "왕복류 흐름을 고려한 지반의 수리저항성능 실험", 한국해안·해양공학회논문집, 23(1), pp.118~125 (2011), 한국해안,해양공학회
- Kimura, H., "A study on the local scour of cylinder artificial fish reefs", Fisheries engineering, 31, pp.33~40 (1994)
- Kwak, K. S., "Measurements of Erosion Rate in Fine-Grained Soils", KGS spring conference, pp.337~342 (2002)
- 이문주, "낙사법으로 조성된 대형 석고 고결시료의 균질성", 한국지반공학회논문집, 24(1), pp.91~99 (2008), 한국지반공학회
- Oh, S. J., "Experimental Study of bridge Scour in Cohesive Soil", Doctor, pp.2009
- Raineault, N. A., "Interannual changes in seafloor surficial geology at an artificial reef site on the inner continental shelf", Continental shelf research, 58, pp.67~78 (2013)
- Suh, S. H., "Settlement Prevention Method of Artificial Reefs using Suction Pile", Conference of the Korean Society of Marine Engineering, pp.321~322 (2009)
- Vaid, Y. P., "Influence of Specimen Reconstituting Method on the Undrained Response of Sand", Journal of Geotechnical Testing, 22(3), pp.187~195 (1999)
- 여창건, "보 형상 변화에 따른 하류부 세굴의 시간적 변화", 대한토목학회 논문집B, 31(4), pp.353~360 (2011), 대한토목학회
- 윤대호, "침하 저감용 보강재로 보강된 인공어초 설치 지반의 거동 특성", 한국지반신소재학회 논문집, 18(1), pp.1~9 (2019), 한국지반신소재학회[DOI]
- Yun, S. J., "A Study of Artificial Reef Subsidence in Unsteady Flow-Wave Field", Journal of The Korean Society of Ocean Engineers, 15(3), pp.28~34 (2001)