Evaluation of the Weak Part for Wave Dissipating Blocks under Various Conditions: Tetrapod

다양한 하중 조건에서 Tetrapod 소파블록의 취약부 분석

  • Received : 2014.07.02
  • Accepted : 2014.08.07
  • Published : 2014.08.31


Super typhoons develop as a result of meteorological changes. In 2012, Typhoons Bolaven and Denba reached Korea. The maximum instantaneous wind speed of the typhoons reached 60 m/sec. Harbor structures including sofa block sustained damage and loss by the abnormally high waves. In Korea, tetrapod blocks were installed the most for wave dissipating. Nevertheless, a structural evaluation of the tetrapod block has not been performed. This study examined the structural mechanism and weakness part of the tetrapod block under a range of boundary conditions. The block has weakness against a tensile force because it is plain concrete. The joint part of the legs is the most vulnerable to tensile stress. The weakest part can be reduced if the joint part is reinforced as a hunch.


Weak Part;Tensile;Tetrapod;Wave Dissipating Block


  1. J A ZWAMBORN and J D SCHOLTZ. Dolos Armour Design Consideration, Coastal Engineering, 2420-2434. 1986
  2. R. Hakenberg, I. Vos-Rovers, J.S. Reedijk, M. Muttray, Structural Integrity of the Xbloc breakwater armour units prototype and numerical droptests, International Conference on Coastal Engineering. Lisbon, 2004
  3. S. Noboru,, M. Iwanami, M Yamamoto, I. Nishiwaki, Structural Performance Evaluation of New-Type Wave Dissipating Concrete Block, COASTAL ENGINEERING CONFERENCE, 31, 3436-3448, 2009
  4. Euro-International Committee for Concrete (CEB), CEB-FIP Model Code, Thomas Telpord 1990
  5. Simulia, ABAQUS, 2013


Grant : 첨단항만물류기술개발사업 - 고파랑 대응 소파블록 및 상치구조물 기술개발

Supported by : 한국해양과학기술진흥원