大型船舶结构吊装数值模拟研究  

Research on Numerical Simulation of Large Ship Structure Lifting

作　　者：王铭[1,2] 鞠理杨 刘建峰 王岳[1] 蒋志勇[1] WANG Ming;JU Li-yang;LIU Jian-feng;WANG Yue;JIANG Zhi-yong(School of Naval Architecture and Ocean Eng., Jiangsu University of Science and Technology, Zhenjiang 212003, China;Shanghai Waigaoqiao shipbuilding Co., Ltd., Shanghai 200137, China)

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003 [2]上海外高桥造船有限公司,上海200137

出　　处：《船舶与海洋工程》2016年第5期80-86,共7页Naval Architecture and Ocean Engineering

摘　　要：提出描述吊装所引起变形程度的物理量:变形量和变形率,并阐述这2个物理量的概念及运用实例。运用数值仿真方法对18万t散货船的舷侧总段及机舱大总段的吊装过程进行模拟,参照结构吊装安全准则优化舷侧总段吊装加强,将优化成果运用到实际生产中,取消原来的圆管加强,减少安装、拆除的工程量,提高生产效率;在有限元计算的基础上,模拟不同工况下机舱大总段整体结构的受力情况,并对计算结果进行分析。结果表明:机舱大总段结构在起吊上升及移位2个阶段的应力和变形超出了安全范围,需采取应对手段。对机舱总段吊装进行数值模拟有利于实现总段大型化、保证吊装的安全性;同时,可提高总段的完整性,使许多坞内工程陆地化,为缩短船坞周期提供理论依据。The concepts of deformation value and deformation rate are proposed with practical examples to describe thedegree of deformation caused by lifting. A numerical method is used to simulate the lifting process of side block andengine room block, and the strengthening measures are optimized for side block lifting according to the safe liftingguidelines. The optimization result is applied to production, where the round pipe strengthening procedure previouslyused has removed to reduce the workload of mounting and dismounting and to improve the efficiency. The forcedistributions of the engine room block were simulated under different working conditions and the results are analyzed onthe basis of finite element calculations. The result shows that the stress and deformation of the engine room blockexceeded the safe range during up-lifting and shifting process, so countermeasures are required. Numerical simulation ofthe engine room block lifting is beneficial for both the enlargement of the blocks and the safety of lifting. Besides, it canincrease the structural integrity of the block, make some of the dock work ashore and provide the theoretical basis forshortening the period of dry dock.

关 键 词：机舱总段 安全准则 模拟吊装 变形控制 

分 类 号：U671.4[交通运输工程—船舶及航道工程]