メガフロート空港の多方向不規則波中弾性応答シミュレーション

概要

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For MEGA-FLOAT as a floating airport, its safety and the reliability of airport functions are of essential importance. In the second phase research of the Technological Research Association of Mega-Float, a methodology for hydroelastic simulation has been developed for a Very Large Floating Structure (VLFS) in short crested irregular waves to predict its behavior and check the relevant airport functions. Some response amplitude operators of motions at ILS positions were calculated first by a newly developed general-purpose three-dimensional computer program for detailed hydroelastic response analysis of VLFSs in regular waves. Then simulations at the appointed points in short crested irregular waves were carried out in time domain using predicted directional wave spectrum and calculated RAOs. A lot of simulations were carried out using this scheme for the actual Mega-Float Phase-II model of 1,000m in length installed in a sheltered water area by breakwaters in Tokyo-Bay. The significant values of inclinations at ILS positions and structural strains were in good agreement with the actual measured data. Thus, the validity of this methodology has been verified in practice. Another simulations for the 'Tokyo Bay Airport' model with 5000m length were carried out and the responses at ILS positions were predicted.
社団法人日本船舶海洋工学会の論文
2002-03-20