半潜船计算压头选取方法研究

Choice of Pressure Head in Designing Submersible Ships

考虑到半潜船的沉浮作业特点和结构形式与普通甲板运输船有所不同,针对半潜船特性重点分析了局部强度校核中计算压头h的选取方法,以及沉浮曲线的使用缺陷。通过对实船局部强度的计算结果进行对比分析,并参考挪威船级社的规范要求,讨论适合于半潜船船体构件局部强度计算压头的选取方法,为半潜船提供较为准确的局部强度评估方法,以利于结构优化设计。

This paper focuses on chosing the pressure head in local structural strength check of the semi-submersible ship,which can work in submerged condition at times,therefore,has special structural features making the merging curve difficult to use.The appropriate value of the pressure head is chosen through analyzing calculated data of real ships according to the rules for semi-submersible vessels by CCS and DNV.