メガフロートユニットの曳航出動限界の評価に関する研究

概要

論文の詳細を見る
When a large disaster like Tsunami or earthquake occurs, Mega-Float can be considered to be a stronghold for disaster prevention. It is quite important to tow the Mega-Float unit to the devastated site safely and swiftly in this concept. In some cases the floating unit might be combined each other on site for constructing a large scale platform. The wave bending moment, elastic motion, added resistance increase clue to waves and towline tension were calculated with a variety of rigidity of the floating unit in order to evaluate the critical towing operation. The calculation for the floating units was mainly divided into 8 cases from 50m to 400m with 3 kind of rigidity. The depth was varied with only 300m length floating unit. Using those results the needed horse power and critical wave height on the towing operation were shown. The approximate and simple method obtaining the critical wave height in short crested waves for emergency towing operation was presented compared with that in regular waves. The probability of possible towing operation was also shown in the classified sea area around Japan considering the wave height and wave period distribution table.
社団法人日本船舶海洋工学会の論文
2003-09-25