邮轮典型开孔高腹板板架结构极限强度分析  

Ultimate strength analysis of typical perforated high web frame structure in cruise ships

作　　者：甘进[1] 单欧 吴卫国[2] 林永水[3] GAN Jin;SHAN Ou;WU Weiguo;LIN Yongshui(School of Transportation,Wuhan University of Technology,Wuhan 430063,China;Green&Smart River-Sea-Going Ship,Cruise and Yacht Research Center,Wuhan University of Technology,Wuhan 430063,China;School of science,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学交通学院,湖北武汉430063 [2]武汉理工大学绿色智能江海直达船舶与邮轮游艇研究中心,湖北武汉430063 [3]武汉理工大学理学院,湖北武汉430070

出　　处：《中国舰船研究》2021年第5期181-188,共8页Chinese Journal of Ship Research

基　　金：国家自然科学基金面上项目资助(51879208)。

摘　　要：[目的]开孔高腹板板架结构是在大型邮轮上层建筑中广泛使用的一类特殊结构,为建立此类结构的设计方法,需充分掌握大型邮轮上层建筑典型开孔高腹板板架结构的力学特性。[方法]综合运用经典加筋板理论与非线性有限元方法,分析甲板初始缺陷、纵桁规格、腹板开孔对板架纵向受压极限承载能力的影响规律。[结果]发现薄板板架对于初始缺陷更为敏感且不同于厚板板架的初始变形模式,纵桁对纵压极限能力贡献度较大,纵压极限承载能力对开孔比例、开孔形状敏感性较低,开孔位置决定崩溃破坏屈曲带的位置,进而揭示了开孔高腹板板架的破坏失效模式。[结论]所得甲板初始缺陷、纵桁几何尺寸、腹板开孔诸因素对开孔高腹板板架极限强度的影响规律,可为邮轮结构轻量化设计及安全性评估提供指导。[Objectives]The perforate high web structure is a special structure widely used in the superstruc-tures of large cruise ships.In order to establish the design method of this kind of structure,it is necessary to fully grasp the mechanical characteristics of typical perforated high web structures used in the superstructures of large cruise ships.[Methods]Using the nonlinear finite element theory and classical stiffened plate the-ory,an analysis is made of the influence law of initial deck defects,longitudinal girder specifications and web openings on the ultimate bearing capacity of the plate frame under longitudinal compression.[Results]The thin plate frame is more sensitive to initial defects,and the initial deformation mode is different from that of the thick plate frame.The longitudinal girder ultimate capacity contribution is bigger and the sensitivity of lon-gitudinal pressure limit capacity to the proportion and shape of holes is low.The locations of the collapse fail-ure buckling zones are determined by the locations of the holes.The failure modes of perforated high web frame structures are revealed.[Conclusions]The results of the influence law of key factors such as initial deck defects,geometrical dimensions of longitudinal girders and web openings on the ultimate strength of per-forated high web frame structures provide guidance for the lightweight design and safety assessment of cruise ship superstructures.

关 键 词：大型邮轮 开孔高腹板 极限强度 非线性有限元 纵向压力 

分 类 号：U661.4[交通运输工程—船舶及航道工程]