Journal of the Korean Geosynthetics Society (한국지반신소재학회논문집)

Korean Geosynthetics Society (한국지반신소재학회)
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An Experimental Study on Settlement Reduction of Artificial Reef using Geosynthetics

토목섬유를 이용한 인공어초 침하 저감에 대한 실험 연구

  • Ha, Yong-Soo (Dept. of Ocean engineering, Pukyong National Univ.) ;
  • Kim, Yun-Tae (Dept. of Ocean engineering, Pukyong National Univ.)
  • Received : 2015.07.20
  • Accepted : 2015.08.20
  • Published : 2015.09.30
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Abstract

An artificial reef is a human-made underwater structure to improve marine environment and to provide a habitat for fish and other ocean wildlife. An artificial reef is placed on the ocean ground. In soft ground like most of the seabed soil, the ground has been settled due to weight of artificial reef. This study investigated the bearing capacity and settlement reduction effect of geosynthetics which were reinforced on the ground in a large size tank. Penetration tests and large soil tank laboratory tests were performed to investigate settlement reduction effect and bearing capacity on artificial reef with different spreading area of geogrid. Laboratory test results indicate that the spreaded geogrid under artificial reef reduce the settlement of ground and increase bearing capacity of ground.

인공어초는 해양환경을 개선하고 어류와 해양생물들에게 주거지를 제공하는 인공 수중 구조물이다. 특히 인공어초가 느슨한 모래, 연약한 점성토와 같은 연약지반에 설치될 경우 인공어초의 자중에 의해 인공어초의 침하가 발생하게 된다. 본 연구에서는 관입실험을 통해 토목섬유 보강 넓이에 따른 인공어초의 지지력 보강효과를 확인하였고, 실내 대형 토조 실험을 통해 침하 저감효과를 확인하였다. 관입실험과 실내 대형 토조 실험을 통해 지오그리드와 같은 토목섬유를 인공어초 하부에 포설하게 되면 지지력이 증가하며, 침하가 감소하는 경향을 나타내었다.

Keywords

References

  1. Abdi, M.R., Sadrnejad, A., Arjomand, M.A. (2009), "Strength Enhancement of Clay by Encapsulating Geogrids in Thin Layers of Sand". Journal of Geotextiles and Geomembranes, Vol.27, pp.447-455. https://doi.org/10.1016/j.geotexmem.2009.06.001
  2. Alawaji, H. (1998), "Model Plate Load Tests on Collapsible Soil", Journal of King Saud University Engineering Science, Vol.10, No.2, pp.255-270.
  3. Binquet, J., Lee, K.L. (1975), "Bearing Capacity Tests on Reinforced Earth Slabs", Journal of Geotechnical Engineering, 101, No. GT12, pp.1241-1255.
  4. Choi, I.H., Suh, S.H., Kim, D.K., Cho, J.K., Cha, B.Y., Kim, E.O. (2009), "The Calculation Floor Area Ratio of Artificial Reefs at South Southwest Sea", Conference of the Korean Society of Marine Engineering, pp.487-489.
  5. Kim, C.G., Suh, S.H., Cho, J.K., Oh, T.G., Seo, Y.K. (2009), "Estimation of Subsidence of Artificial Reefs by Sediment Characteristics and Chirb Sub-bottom Profiler", Conference of the Korean Society of Marine Engineering, pp.355-356.
  6. Kim, D.K., Suh, S.H., Cho, J.K., Kim, C.G., Choi, I.H., Kim, B.S. (2010), "Settlement Characteristics of Square Reefs Installed on Soft Seafloor Ground", Journal of the Korean Society of Marine Engineering, Vol.34, No.1, pp.163-167. https://doi.org/10.5916/jkosme.2010.34.1.163
  7. Kim, H.T., (2001), "A Study of Artificial Reef Subsidence In Unsteady Flow Field", Journal of Ocean Engineering and Technology, Vol.15, No.2, pp.33-38.
  8. Lee, M.J., Choi, S.K., Choo, H.W., Cho, Y.S., Lee, W.J. (2008), "Uniformity of Large Gypsum-cemented Specimens Fabricated by Air Pluviation Method", Journal of Geotechnical Engineering, Vol.24, No.1, pp.91-99.
  9. Vaid, Y.P., Sivathayalan, D.S., Stedman, D. (1999), "Influence of Specimen Reconstituting Method on the Undrained Response of Sand", Geotech. Testing J, Vol.22, No.3, pp.187-195. https://doi.org/10.1520/GTJ11110J
  10. Yoon, S.J., Kim, H.T. (2001), "A Study of Artificial Reef Subsidence in Unsteady Flow-Wave Field", Journal of Ocean Engineering and Technology, Vol.15, No.3, pp.28-34.

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