ON THE PREDICTIONS OF HYDROELASTIC BEHAVIOURS OF A HUGE FLOATING STRUCTURE IN WAVES - A PONTOON TYPE FLOATING STRUCTURE

A huge-box shaped floating structure is being proposed as an offshore airport. The length and width will be 5000m and 1000m respectively and the thickness of the structure is expected to be about 5m. Experiments on elastic deformation of such structures are difficult because if both the horizontal and vertical dimensions are equally scaled, the resultant model should be less than 10mm thick. For the structures considered in this study, the local displacements due to elastic deformations may be comparable to or larger than the displacements due to rigid-body motions. Therefore in the prediction of hydrodynamic forces on the structure, the elastic deformations should be taken into account. The elastic deformations are in turn affected by the hydrodynamic forces. The elastic deformations and the hydrodynamic forces interact with each other, this is called a hydroelastic interaction. This paper proposes a new theoretical technique than can incorporate such hydroelastic interactions in the prediction of the dynamic behaviour of a huge floating pontoon-type structure in waves. The numerical results based on the proposed theory are compared with experimental data, obtained by using a flexible model in a water tank. The effectiveness of the theory is discussed.

• Supplemental Notes:
  • J Soc Naval Arch Japan, v 178, Dec 1995, p 213 [12 p, 10 ref, 2 tab, 32 fig]
• Authors:
  • Murai, M
  • Kagemoto, H
  • Fujino, M
• Publication Date: 1995

Language

• Japanese

Subject/Index Terms

• TRT Terms: Floating structures
• Candidate Terms: Pontoons
• Old TRIS Terms: Hydroelasticiy
• Subject Areas: Bridges and other structures; Marine Transportation;

Filing Info

• Accession Number: 00728029
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Nov 4 1996 12:00AM