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An Experimental Study of Settlement Behavior of Artificial Reef according to Reinforcement Characteristics

해저 연약지반 보강 조건에 따른 인공어초 침하 거동에 대한 실험적 연구

Dae-Ho Yun1
,
Yun-Tae Kim2*
윤 대호1
,
김 윤태2*
1Graduated student, Department of Ocean engineering, Pukyong National University
2Professor, Department of Ocean Engineering, Pukyong National University
*교신저자. *Corresponding Author. 
30 March 2017. pp. 53-61
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Abstract

Seabed settlement and erosion sometimes occurr when a artificial reef is installed in soft seabed. Therefore, this study carried out CBR test and water tank settlement test to investigate settlement behavior of artificial reef according to reinforcement characteristics such as reinforced types and reinforced area. Soil types of ground are sand, silt and clay deposits. Three reinforced types were prepared: unreinforced, geogrid and hybrid bamboo mat(HBM) with different reinforced area. Laboratory test results indicated that reinforced artificial reef improved bearing capacity of ground and reduced settlement as reinforced area increased. Especially, reinforced HBM provided more bearing capacity and less settlement than reinforced geogrid.

Keywords
Artificial reef
Bearing capacity increase ratio
Settlement reduction ratio
Reinforcement
Hybrid bamboo mat

바다 자원의 조성을 위해 시설되는 인공어초는 해저 연약지반에 설치될 경우 침하 및 세굴에 의한 기능 상실이 발생할 수 있다. 따라서 본 연구에서는 해저 연약지반의 보강에 따른 인공어초의 침하 거동을 알아보기 위해 모래, 실트 및 점토 지반을 각각 조성하여 관입실험, 침하실험 등과 같은 다양한 실내실험을 수행하였다. 무보강(unreinforced), 지오그리드(geogrid) 보강 및 하이브리드 대나무매트(hybrid bamboo mat, HBM) 보강과 같은 3종류의 보강과 보강재의 면적에 따른 특성을 살펴보았다. 실험 결과 보강재의 면적이 증가할수록 보강 효과가 증가하는 경향을 보였으며, HBM이 지오그리드 단일 보강에 비해 더 뛰어난 보강 효과를 보였다.

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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 16
  • No :1
  • Pages :53-61
  • Received Date : 2017-01-02
  • Revised Date : 2017-03-14
  • Accepted Date : 2017-03-14
  • DOI :https://doi.org/10.12814/jkgss.2017.16.1.053
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