构皮滩升船机主提升机卷筒结构焊缝疲劳强度分析  

Fatigue strength analysis of drum welds of main hoist of Goupitan ship lift

作　　者：王蒂 湛伟杰 吴双杰 侯晋 廖乐康 WANG Di;ZHAN Weijie;WU Shuangjie;HOU Jin;LIAO Lekang(Changjiang Survey,Planning,Design and Research Co.,Ltd.,Wuhan 430010,China;Guizhou Wujiang Hydropower Development Ltd.,Zunyi 550002,China)

机构地区：[1]长江勘测规划设计研究有限责任公司,湖北武汉430010 [2]贵州乌江水电开发有限责任公司,贵州遵义550002

出　　处：《水运工程》2023年第6期108-113,共6页Port & Waterway Engineering

摘　　要：构皮滩升船机主提升机卷筒结构规模大、受力及边界条件复杂、运行频繁,且卷筒筒体的应力呈现周期性变化,卷筒焊缝可能产生疲劳破坏,因此焊缝的疲劳强度分析是卷筒结构设计的必要和重要环节。基于卷筒结构与载荷的复杂性,采用有限元分析方法计算卷筒结构的应力变化范围,其建模方法充分考虑了卷筒组与轴承座以及卷筒组各子结构的机械装配特性;采用标准“Eurocode 3”疲劳强度评估方法进行焊缝疲劳强度设计。基于有限元和“Eurocode 3”疲劳强度评估的焊缝疲劳强度设计方法,可为水利枢纽升船机设计提供参考。The main hoist of Goupitan ship lift involves large drum,complex stress and boundary conditions,and frequent operations.The stress of the drum periodically changes,which may cause fatigue damage to the drum welds.So the fatigue strength analysis of the welds is an inseparable part of the drum design.Based on the complexity of the structure and load of the drum,this study uses the finite element analysis method to calculate the stress variation range of the drum.The modeling method fully considers the mechanical assembly characteristics of the drum group,bearing seat,and substructures of the drum group.At the same time,the study designs the weld fatigue strength by the standard“Eurocode 3”fatigue strength evaluation method.The design method of weld fatigue strength based on finite element analysis and“Eurocode 3”fatigue strength evaluation can provide references for the design of ship lift in hydro-junction.

关 键 词：构皮滩升船机 主提升机卷筒 疲劳强度 应力幅法 有限元分析方法 接触连接 

分 类 号：X52[环境科学与工程—环境工程] U64[交通运输工程—船舶及航道工程]