Abstract:  Large aquaculture engineering vessels are mainly operating in the deep sea. In order to ensure the sufficient strength of the hull structure under various working conditions and fish farming arrangement, it is necessary to design the structure of the aquaculture engineering vessels. For the reasons that the type and service condition of aquaculture engineering vessel are special, there is no current specification written specifically for its particularity. According to the characteristics of its overall layout and loading, the basic size and specification of the hull structure are calculated in accordance with the applicable section of the code for double-hull tankers, and the finite element model is established according to the actual loading condition to calculate the structural strength by the finite element method. The results of calculation and analysis show that the structure size and specification calculated by the code for double-hull tankers basically meet the requirements. If the strength of the local structure is not up to the strength requirements, the strength requirements can be met after the strengthening of the structure. By carrying out the basic design of hull structure with similar vessel in the code and checking the structural strength with the finite element method, it is proved that the calculation method meets the requirements of structural design.

Key words: aquaculture engineering vessel, fish tank, strength analysis, finite element

摘要： 大型养殖工船主要在深远海海域养殖作业，在满足各种作业工况及养鱼布置的条件下要保证船体结构具有足够的强度，需要对养殖工船进行结构设计工作。由于养殖工船船型和使用工况比较特殊，目前还没有根据其特殊性而专门编写的现行规范。本船根据养殖工船总体布置和装载等特点，参照双壳油船规范中适用章节要求计算出船体结构的基本尺寸和规格，再根据其实际装载情况建立有限元模型，采用有限元方法计算其结构强度。计算和分析结果显示，通过双壳油船规范计算的结构尺寸、规格基本满足要求；局部结构强度达不到强度衡准要求的，通过结构加强后，可满足强度衡准要求。通过采用规范中相似船进行船体结构基本设计，再利用有限元方法分析校核结构强度，经验证该计算方法满足结构设计要求。

关键词: 养殖工船, 养殖鱼舱, 强度分析, 有限元