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Structural Safety Assessment of Pontoon-Type VLFS Considering Damage of Breakwater

[+] Author Affiliations
Masahiko Fujikubo, Tao-Yun Xiao

Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan

Kazuhiro Yamamura

TOA Corporation, Tokyo, Japan

Paper No. OMAE2002-28449, pp. 857-864; 8 pages
  • ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering
  • 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 2
  • Oslo, Norway, June 23–28, 2002
  • Conference Sponsors: Ocean, Offshore, and Arctic Engineering Division
  • ISBN: 0-7918-3612-6 | eISBN: 0-7918-3599-5
  • Copyright © 2002 by ASME


Structural reliability analysis of a pontoon-type Very Large Floating Structure (VLFS) of rectangular planar shape surrounded by gravity-type breakwater in extreme waves is performed considering the damage of breakwater. Bending and shear collapses are considered for floating structure, while overturning damage for breakwater. The ultimate bending and shear strengths of the floating structure are calculated using Idealized Structural Unit Method (ISUM) and FEM. The calculated failure probability of floating structure is compared with the specified target safety level. It has been found that the considered floating structure is most likely to fail in the bending collapse mode in transverse waves and that the corresponding failure probability satisfies the target level.

Copyright © 2002 by ASME
Topics: Safety , Breakwaters



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