40 000 t自卸船概率破舱稳性计算优化

Calculation and Optimization of Probabilistic Damage Stability of a 40 000 t Self-unloading Ship

根据《1974年国际海上人命安全公约》第Ⅱ-1章概率破舱稳性的修正案(简称《SOLAS 2009》),结合40 000 t自卸船分舱特点,利用NAPA软件对分舱指数计算过程和结果进行分析。通过采取增加甲板浸没区域风雨密开口高度、增加止逆阀减小破损浸水范围、优化计算分隔等措施,将部分无贡献破损组合的生存系数由0提升到1,最终使该船的分舱指数满足公约要求。

According to the amendments to Probabilistic Damage Stability in Chapter Ⅱ-1 of THE INTERNATIONAL CONVENTION FOR SAFETY OF LIFE AT SEA,1974( referred to as " SOLAS 2009"),combined with the subdivision characteristics of the 40 000 t self-unloading ship,NAPA software is used to analyze the calculation process and results of subdivision index. By adopting measures such as increasing the height of the weathertight opening in the deck immersion area,increasing the check valve to reduce the damaged immersion range,and optimizing the calculation separation,the survival coefficient of some non-contributing damage combinations is increased from 0 to 1,and finally,the subdivision index of the ship meets the requirements of the convention.