冰区双燃料平台供应船结构设计与总体强度评估

摘要

对目标冰区双燃料平台供应船展开整船结构设计与总纵强度评估,将液化天然气(Liquefied Natural Gas,LNG)燃料罐装载与常规平台供应船装载工况组合,计算静水剪力、弯矩,分析在设计剪力、弯矩下平台供应船的弯曲、剪切和屈曲强度以及冰带区域内结构对总纵强度的影响,给出适于此类船舶静水载荷的计算方法以及危险剖面位置的选取原则,并基于分析结果完善和优化结构设计.%The calculation object is an ice class dual fuel platform support vessel,the loading condition of LNG fuel tank is considered in the calculation of static water bending moment and shear force envelop.Bending strength,shear strength and buckling strength of hull girder under design bending moment and shear force are assessed.The arrangement of ice belt structure is also considered in the selection of section location.A selected principle of the critical calculation section and a calculation method of static water loads are provided.The ship structure is optimized by the calculation result.