大型船舶上层建筑-主船体剪切耦合方法研究  

Shear coupled method between superstructure and main hull of large ships

作　　者：李晓文 朱兆一[1,2] 陈清林 蔡应强[1,2] 彭苗娇 LI Xiao-wen;ZHU Zhao-yi;CHEN Qing-lin;CAI Ying-qiang;PENG Miao-jiao(School of Marine Engineering,Jimei University,Xiamen 361021,China;Fujian Provincial Key Laboratory for Naval Architecture and Ocean Engineering,Xiamen 361021,China)

机构地区：[1]集美大学轮机工程学院,福建厦门361021 [2]福建省船舶与海洋工程重点实验室,福建厦门361021

出　　处：《船舶力学》2023年第5期742-749,共8页Journal of Ship Mechanics

基　　金：国家自然科学基金项目(51909103);福建省自然科学基金项目(2021J01841,2021J01844,2021J05164);福建省教育厅项目(JAT200290);集美大学国家基金培育计划项目(EP2023008)。

摘　　要：对于大型客船、豪华邮轮等船舶,上层建筑参与总纵弯曲的程度较大,主船体与上层建筑之间的作用关系非常复杂。探究大型船舶上层建筑-主船体间的各向耦合关系对于改善大型船舶的力学性能、结构安全等具有十分重要的意义。本文基于双梁理论和耦合梁理论,重点研究上层建筑-转换层-主船体之间的纵向剪切耦合关系,提出一种适用于带有大型上建船体结构的简化耦合梁方法。通过建立耦合梁结构的控制方程,获得上建与主船体间的弯矩-曲率关系、剪切耦合关系以及耦合刚度-极限剪切位移之间的关系,从而有效表征大型上建与主船体间的相互作用。经实例分析,验证了该耦合梁方法的准确性和有效性,可以为带有大型上层建筑船舶的极限强度研究、设计优化等提供有益参考。For large passenger ships and luxury cruise ships,the superstructure participates in the longitudinal bending to a great extent,and the relationship between the main hull and the superstructure is very complicated.It is very important to explore the anisotropic coupling relationship between superstructure and main hull to improve the mechanical properties and structural safety of large ships.Based on the double beam theory and coupled beam theory,the longitudinal shear coupling relationship among superstructure,transfer floor and main hull was investigated,and a simplified coupled beam method was proposed for ships with a large superstructure.By establishing the governing equations of the coupled beam structures,the relationships between the superstructure and the main hull in terms of bending moment and curvature,shear coupling and coupling stiffness and limit shear displacement were obtained,and the interaction between the large superstructure and the main hull was effectively represented.The accuracy and effectiveness of the coupled beam method were verified by an example,which can provide a useful reference for the ultimate strength analysis and design optimization of ships with a large superstructure.

关 键 词：剪切耦合关系 大型上层建筑 耦合梁方法 控制方程 总纵弯曲 

分 类 号：U662[交通运输工程—船舶及航道工程]