横弯载荷下双体货船连接桥结构应力集中特性分析  

Analysis of Structural Stress Concentration Characteristics at Connecting Bridge of Catamaran Cargo Ship under Transverse Bending Load

作　　者：徐双喜[1,2,3] 马海凤 陈攀[4] 吴轶钢[1,2] 唐卫国 XU Shuangxi;MA Haifeng;CHEN Pan;WU Yigang;TANG Weiguo(School of Transportation, Wuhan University of Technology, Wuhan 430063, China;Key Laboratory of High Performance Ship Technology, Wuhan University of Technology, Ministry of Education, Wuhan 430063, China;Institute of Advanced Materials and Manufacturing Technology, Wuhan University of Technology, Wuhan 430000, China;China Ship Development and Design Center, National Key Laboratory on Ship Vibration & Noise, Wuhan 430064, China)

机构地区：[1]武汉理工大学交通学院,武汉430063 [2]高性能舰船技术教育部重点实验室,武汉430063 [3]武汉理工大学先进材料制造装备与技术研究院,武汉430063 [4]中国舰船研究设计中心船舶振动噪声重点实验室,武汉430064

出　　处：《武汉理工大学学报（交通科学与工程版）》2021年第4期715-720,共6页Journal of Wuhan University of Technology（Transportation Science & Engineering）

摘　　要：内河双体货船干舷小,连接桥结构相对薄弱,决定船舶安全的横向强度至关重要.双体货船不同于具有丰满上层建筑的双体船,除横舱壁、强框架的片体与连接桥角隅处易发生应力集中外,在连接桥横隔板的变截面处应力集中现象也非常显著.内河规范不适用于60 m以上双体船,缺少对100 m级双体船横弯强度计算规定.文中以98 m内河双体集装箱船为对象,开展了横弯强度缩比模型实验和数值仿真分析,证实了在连接桥底板的折角处应力集中现象,改倒圆后片体与连接桥连接区域的应力集中系数为1.8~2.1,应力集中位置采用圆弧过渡会有效缓急应力集中.Because the freeboard of inland catamaran cargo ship is small and the connecting bridge structure is relatively weak,it is very important to determine the lateral strength of ship safety.Catamaran cargo ships are different from catamarans with plump superstructure.Besides the transverse bulkheads,the sheets with strong frames and the corners of the connecting bridge,the stress concentration at the variable cross-section of the diaphragm of the connecting bridge is also very obvious.The inland river code is not applicable to catamarans over 60 m,and lacks the provisions for calculating the transverse bending strength of catamarans of 100 m class.In this paper,a 98 m inland river catamaran container ship was taken as the object,the transverse bending strength scaling model experiment and numerical simulation analysis were carried out,and the stress concentration phenomenon at the corner of the bottom plate of the connecting bridge was confirmed.After rounding,the stress concentration coefficient of the connecting area between the sheet and the connecting bridge is 1.8~2.1,and the circular arc transition will effectively accelerate the stress concentration.

关 键 词：双体船 连接桥 应力集中 横向弯曲 模型实验 有限元 

分 类 号：U674.134[交通运输工程—船舶及航道工程]