计及侧向载荷作用的纵骨梁柱多跨失稳载荷-端缩曲线确定方法  

Method of beam-column buckling load-end shortening curve of multi-span instability longitudinal stiffener with action of lateral load

作　　者：吴剑国[1] 万琪[2] 王福花[2] 朱汉波[1] 张津宁 WU Jian-guo;WAN Qi;WANG Fu-hua;ZHU Han-bo;ZHANG Jin-ning(Zhejiang University of Technology,Hangzhou 310023,China;Marine Design&Research Institute of China,Shanghai 200011,China)

机构地区：[1]浙江工业大学,杭州310023 [2]中国船舶与海洋工程设计研究院,上海200011

出　　处：《船舶力学》2020年第4期474-483,共10页Journal of Ship Mechanics

摘　　要：针对现有船体梁极限承载能力计算的Smith法不能计及侧向载荷作用的问题,本文提出了一种考虑侧向载荷作用下板架变形的纵骨梁柱失稳的屈曲载荷计算模型和方法,推导了计及侧向压力对板架影响的纵骨梁柱屈曲载荷-端缩曲线公式。进行了纵向与侧向载荷共同作用下三个板架的极限承载力计算,分析讨论了侧向载荷、板架参数等对纵骨梁柱屈曲极限强度的影响规律。应用本文方法编制了考虑侧向荷载作用的船体梁极限强度程序,进行了实船的计算和对比分析。The classic Smith method to calculate the ultimate capacity of a ship hull girder cannot take later?al load into account.A calculation model and method of the buckling load of the longitudinal stiffener considering the deformation of a stiffened plate is proposed.A beam-column buckling load-end shortening curve formula of longitudinal stiffener is derived considering the influence of lateral load on long-span plate.The ultimate load bearing capacity of three plates is calculated under longitudinal load and lateral load.The effect of lateral load and plate parameters on the ultimate strength of plates is discussed.The hull girder ultimate strength program to consider the lateral loading is compiled by using this method,and the ultimate capacity of a bulk cross section is calculated and compared.

关 键 词：载荷-端缩曲线 极限强度 Smith法 非线性有限元 

分 类 号：U661.43[交通运输工程—船舶及航道工程]