Journal of Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회논문집)

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
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Proposal of a New Experimental Method for Evaluating the Stability of Armor Blocks

소파블록의 안정성 평가에 대한 새로운 실험방법 제안

  • Kim, Shinwoong (Dept. of Civil and Disaster Prevention Eng., Halla University) ;
  • Lee, Seong-Dae (Dept. of Civil and Disaster Prevention Eng., Halla University) ;
  • Lee, Kwang-Ho (Dept. of Civil Engineering, Korea Maritime and Ocean University)
  • 김신웅 (한라대학교 건설방재공학과) ;
  • 이성대 (한라대학교 건설방재공학과) ;
  • 이광호 (한국해양대학교 물류.환경.도시인프라공학부 건설공학전공)
  • Received : 2021.05.28
  • Accepted : 2021.06.21
  • Published : 2021.06.30
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Abstract

The armor blocks are used to protect the body of the structure and dissipate wave energies, so it is crucial to evaluate the stability of the armor unit. The stability of armor blocks has been mainly evaluated through empirical coefficients called the stability coefficient obtained from hydraulic model experiments. In this study, a new type of single-layered armor block called K-Block was proposed, and a new experimental method based on the pull-out force was proposed to evaluate the stability of the armor unit, including the interlocking effects. The pull-out force test proposed in this study directly measures the force required to separate the armor unit from the armored layer on the slope by applying a tensile force in the vertical and horizontal directions to the installed armor unit. The proposed experimental method confirmed that the interlocking effects of the armor block could be quantitatively evaluated, and the high stability of the K-Block was verified.

소파블록은 제체의 보호와 파랑에너지 소산을 목적으로 사용되므로 피복된 블록의 안정성을 평가하는 것은 매우 중요하다. 소파블록의 안정성은 주로 수리모형실험으로부터 산정되는 안정계수를 통해 평가되어 왔다. 본 연구에서는 새로운 형태의 소파블록인 K-블록을 활용하여 블록의 맞물림 효과를 포함한 안정성 평가를 위해 인발력에 기반한 새로운 안정성 실험방법을 제시하였다. 소파블록의 인발 실험은 일정 경사면 소파블록을 설치하고 수직 및 수평 방향으로 인장력을 작용시켜 사면 상의 피복층으로부터 블록이 분리되는데 필요한 힘을 직접 계측하는 방법이다. 제안된 실험방법은 소파블록의 맞물림 효과를 정량적으로 평가할 수 있음을 확인하였으며, 맞물림 영향에 의한 단층 피복블록(K-블록)의 높은 안정성을 검증하였다.

Keywords

Acknowledgement

본 연구는 한국연구재단을 통해 과학기술정보통신부의 「해외우수과학자유치사업」의 지원을 받아 수행되었음(2019H1D3A1A01103001)

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