海洋工程装备与技术

海洋工程装备与技术 ›› 2023, Vol. 10 ›› Issue (4): 16-23.

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船舶理想上层建筑设计研究

廖世扬1， 2， 刘  俊1， 2*， 曾文源3   

  1. 1. 上海交通大学，海洋工程国家重点实验室，上海  200240；
    2. 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；
    3. 中国船舶及海洋工程设计研究院，上海  200011
  • 出版日期:2024-01-06 发布日期:2024-01-06

Study on Ideal Superstructure Design of Ship

LIAO Shiyang1， 2, LIU Jun1， 2*, ZENG Wenyuan3   

  1. 1. Shanghai Jiao Tong University， State Key Laboratory of Ocean Engineering， Shanghai 200240， China；
    2. Shanghai Jiao Tong University， Collaborative Innovation Center for Advanced Ship and Deep sea Exploration， Shanghai 200240， China；
    3. Marine Design and Research Institute of China， Shanghai 200011， China
  • Online:2024-01-06 Published:2024-01-06

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摘要： 理想上层建筑是指船体发生弯曲时上层建筑不发生弯曲，上层建筑的正应力沿高度方向一致。与强上层建筑和轻型上层建筑不同，理想上层建筑的应力水平接近于主甲板，可最大限度地发挥材料强度作用。以一艘典型的油船为研究对象，基于组合梁方法，考虑剪切迟滞效应的影响，探讨理想上层建筑的设计方法，根据上层建筑的剖面特性探究理想上层建筑的长度。结合理想上层建筑理论公式，依据船中横剖面参数，求解得到理想上层建筑的设计长度，得出理想上层建筑的理论设计方案后，借助有限元法对理想上层建筑甲板应力分布规律进行验证。验证结果表明，上层建筑正应力水平接近主甲板，可为早期理想上层建筑的设计提供参考；最后，调整上层建筑甲板厚度，达到节省材料、降低重心的目的。

关键词: 理想上层建筑, 组合梁法, 剪切迟滞效应, 正应力分布

Abstract: The ideal superstructure means that the superstructure does not bend when the hull is bent， and the normal stress of the superstructure is consistent in the direction of height. Different from the strong superstructure and the light superstructure， the stress level of the ideal superstructure is close to the main deck， which can maximize the utilization of material strength. In this paper， a typical oil tanker is taken as the research object. Based on the composite beam method， considering the influence of shear hysteresis effect， the design method of ideal superstructure is discussed. According to the section characteristics of superstructure， the length of ideal superstructure is explored. Based on the theoretical formula of the ideal superstructure， the design length of the ideal superstructure is obtained according to the parameters of the transverse section of the ship. After the theoretical design scheme of the ideal superstructure is obtained， the stress distribution law of the deck of the ideal superstructure is verified by the finite element method. The verification results show that the normal stress level of the superstructure is close to the main deck， which can provide reference for the design of the early ideal superstructure. Finally， the deck thickness of the superstructure is adjusted to save materials and reduce the center of gravity.

Key words: ideal superstructure, composite beam method, shear hysteresis effect, normal stress distribution

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