コンテナー船の波浪荷重設計値推定

概要

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The statistical predictions of wave loads (vertical shearing force, vertical bending moment, horizontal shearing force, horizontal bending moment and torsional moment) have been made for a container ship of 175 meters length and the similar ships of different length, in order to find out the long-term trends of wave loads and to examine the design values of those. In the first place, the response functions of wave loads are calculated by the aid of the modified strip theory. Then, the standard deviations of wave loads are evaluated based upon the linear superposition theory, by using the calculated response functions and the formulated wave spectra for given sea conditions. Finally, the long-term predictions of wave loads are determined by the obtained standard deviations and the wave statistics of the North Atlantic Ocean. According to the systematic prediction analysis, the longitudinal distributions of vertical wave shearing force and horizontal wave shearing force, which are predicted with the exceeding probability of 10^<-6>, are investigated in relation to the ship speed, heading angle and ship length. The longitudinal distributions of vertical wave bending moment, horizontal wave bending moment and wave torsional moment, which are predicted with the exceeding probability of 10^<-8>, are also investigated in relation to the ship speed, heading angle and ship length.
社団法人日本船舶海洋工学会の論文
1977-08-15