海浪统计资料对船舶波浪弯矩设计值的影响

对船舶特别是超规范船舶进行结构的直接计算设计时，设计人员应合理选择船舶航行海域的海浪长期统计资料，根据船舶的装载工况及实际可能达到的航速，借用线性理论或非线性理论进行波浪弯矩的长期预报来确定设计值．文中就一艘大型集装箱船舶，按五个典型海域的海浪统计资料，对波浪弯矩及波浪合成弯矩作了长期预报计算，并与ＩＡＣＳ的统一纵强度要求ＵＲ－Ｓ１１的结果作比较和分析，给出了对船舶结构直接计算设计有指导意义的几点结论．

Effects of Wave Data on Ship Design Bending Moments

Design values of wave induced bending moments must be estimated first when direct structural design method is used for general ships, especially for ships beyond rules. The wave data of sailing areas, in which ship executes its mission, must be well recognized and rationally selected. Then, according to the loading conditions and enable velocities, with linear or non linear strip theory and codes, the long term predictions of wave bending moments are carried out to determine the design values. In this paper, five sets of wave data from different sources are analyzed. Based on the scatter diagrams of these wave data, the long term wave bending moments, including wave induced and siamming responses, are predicted for a large container ship. The results are analyzed and compared with IACS S11. Finally, some suggestions are made for direct design calculation of wave loads on ships.