大型邮轮上层建筑由密集的薄壁居住舱室和多个大跨度休闲娱乐舱室构成，需使用大量有针对性的非对齐立柱支撑结构，但是该结构会导致极限强度的降低。针对这一问题，选取大型邮轮上层建筑中典型的圆形-圆形非对齐偏心支柱为研究对象，通过压载试验和有限元数值模拟，分析了不同偏心度对支柱结构极限强度和变形的影响。研究发现，偏心度越大，支柱结构的极限强度越小，且偏心度增加会导致应力集中区域扩大和高应力区面积增加。同时，优化分析表明，上支柱垫板厚度取5 mm（与甲板厚度相同）和加强筋厚度在10～12 mm范围内时，能有效减少甲板变形并维持结构的极限强度。此外，加强筋布置在两支柱端连线上可显著提高极限强度。这些结论可为大型邮轮上层建筑非对齐偏心支柱的设计和优化提供参考。
The superstructure of a large cruise ship is composed of dense thin-walled accommodation and multiple long-span recreational accommodation, which requires the use of a large number of targeted non-aligned column support structures, but this structure will lead to a reduction in ultimate strength. To solve this problem, the typical round-round eccentric pillar in the superstructure of a large cruise ship is selected as the research object, and the influence of different eccentricity on the ultimate strength and deformation of the pillar structure is analyzed by ballast test and finite element numerical simulation. It is found that the greater the eccentricity, the smaller the ultimate strength of the pillar structure, and the increase of eccentricity will lead to the expansion of stress concentration area and the increase of high stress area. At the same time, the optimization analysis shows that when the thickness of the upper strut plate is 5 mm (the same as the thickness of the deck) and the thickness of the stiffener is within the range of 10～12 mm, the deck deformation can be effectively reduced and the ultimate strength of the structure can be maintained. In addition, the placement of reinforcement bars on the two pillar end connections can significantly increase the ultimate strength. These conclusions can provide reference for the design and optimization of the non-aligned eccentric pillars of the superstructure of large cruise ships.
2025,47(8): 53-59 收稿日期：2024-6-6
DOI：10.3404/j.issn.1672-7649.2025.08.009
分类号：U663.6
作者简介：李孜秋(2000-),男,硕士研究生,研究方向为船舶与海洋工程
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