LNG Ready方案下的VLOC LNG舱段结构直接计算方法

为满足船舶低硫排放要求，液化天然气(Liquefied Natural Gas, LNG)Ready方案应运而生。结合超大型矿砂船(Very Large Ore Carrier, VLOC)LNG舱段的布置和结构特点，提出一种LNG舱段结构直接计算方法，并对该方法的若干要点进行研究，包括模型范围和要求、计算载荷和工况的选择等。以某VLOC为例，运用该方法进行LNG舱段结构的有限元直接计算，计算结果指出LNG舱段需要进行结构加强的关键区域。

Direct Calculation Method of VLOC LNG Tank Section Structure under LNG Ready Scheme

In order to meet the requirements of low sulfur emissions from ships, the Liquefied Natural Gas (LNG) Ready scheme comes into being. Combined with the layout and structural characteristics of Very Large Ore Carrier (VLOC) LNG tank section, a direct calculation method of LNG tank section structure is proposed, and some key points of the method are studied, including the model range and requirements, the selection of calculation load and working condition, etc. Taken a VLOC as an example, the method is used to make the finite element direct calculation of LNG tank section structure, and the key areas that need to be strengthened are pointed out by the calculation results.