20000 TEU集装箱船水密横舱壁结构精度建造的预控  

Prediction and Controlling of Accurate Construction of 20000 TEU Container Ship Watertight Transverse Bulkhead Structure

作　　者：史雄华 周宏[2] 王江超[1,3] 刘建峰 胡小才 杨振 SHI Xionghua;ZHOU Hong;WANG Jiangchao;LIU Jianfeng;HU Xiaocai;YANG Zhen(School of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China;Collaborative Innovation Center for Advanced Ship and Deep-sea Exploration,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Waigaoqiao Shipbuilding Co.,Ltd.,Shanghai,200137,China)

机构地区：[1]华中科技大学船舶与海洋工程学院,武汉430074 [2]江苏科技大学船舶与海洋工程学院,江苏镇江212003 [3]上海交通大学高新船舶与深海开发装备协同创新中心,上海200240 [4]上海外高桥造船有限公司,上海200137

出　　处：《船舶工程》2019年第9期111-117,130,共8页Ship Engineering

基　　金：国家自然科学基金资助项目（51609091）;高技术船舶科研专项子专题（15921019518)

摘　　要：水密横舱壁作为20000 TEU集装箱船的关键结构,对尺寸精度的要求十分严苛,而焊接变形严重影响其建造精度。针对这一问题,采用基于固有变形理论的弹性有限元分析,来预测水密横舱壁结构的面外焊接变形。比较了计算固有变形的两种方法的准确度,并且总结了热输入与固有变形各分量的经验公式,还提出了减小面外焊接变形的措施。结果表明,通过与实测数据对比验证了弹性有限元分析可快速、准确地预测水密横舱壁结构的面外焊接变形;对于对接接头,变形反演法比应变积分法得到的横向固有弯曲更准确;热输入与固有变形各分量呈线性递增关系;将整个水密横舱壁结构由原来的3段分成5段,并采用对称焊接顺序,面外焊接变形最小,同时会降低对船厂吊装能力的要求。As the key structure of 20 000 TEU container ship, watertight transverse bulkhead has strict requirements on the dimensional accuracy, and the welding distortion seriously affects the construction accuracy. To solve this problem, the elastic finite element analysis based on the inherent deformation theory is used to predict the out-of-plane welding distortion of watertight transverse bulkhead structure. The accuracy of two methods for calculating inherent deformation is compared, the empirical formulas of the heat input and the components of inherent deformation are summarized, and the measures to reduce the out-of-plane welding distortion are proposed. The results show that the elastic finite element analysis can predict the out-of-plane welding distortion of the watertight transverse bulkhead structure quickly and accurately by comparing with the measured data. For the butt joint, the transverse inherent curvature obtained by the deformation inversion method is more accurate than the strain integration method. The relationship between the heat input and the inherent deformation presents a linear trend of increasing. If the whole watertight transverse bulkhead structure is divided into 5 sections instead of the original 3 sections and the symmetrical welding sequence is used, the minimum out-of-plane welding distortion can be achieved, and the requirement on the lifting capacity of the shipyard can be reduced.

关 键 词：超大型集装箱船 精度建造 固有变形 焊接顺序 有限元计算 

分 类 号：U671.83[交通运输工程—船舶及航道工程]