摘要
托管架长期承受着交变载荷的作用,结构疲劳破坏问题不容忽视。为此,本文分别基于波浪谱和监测数据对托管架的疲劳问题进行研究。通过计算结果的对比分析,发现基于波浪谱的疲劳损伤计算,由于波浪荷载的随机性很强,导致计算结果偏于保守,适用于设计阶段结构的疲劳寿命预报评估;而基于实时监测数据的疲劳损伤计算,数据相对更加准确,适用于实时评估结构当前的疲劳损伤情况,并依此提出适当的维修和保养建议。
Stingers bear the alternating load during operation,and the fatigue failure of the structure can not be ignored.Therefore,based on the wave spectrum and real-time monitoring data,the fatigue problem of a stinger was studied.The comparison and analysis of the calculation results suggest the fatigue damage calcu-lation based on the wave spectrum is conservative due to the strong randomness of the wave load,so this method is suitable for the prediction and evaluation of the fatigue life of the structure in the design stage.However,the fatigue damage calculation based on the real-time monitoring data is relatively more accurate,so it is suitable for real-time assessment of the immediate fatigue damage of the structure.Finally,this paper puts forward appropriate repair and maintenance suggestions accordingly.
作者
闫宏生
陈森彪
贾同宇
陈永訢
孟祥伟
YAN Hong-sheng;CHEN Sen-biao;JIA Tong-yu;CHEN Yong-xin;MENG Xiang-wei(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China;Offshore Oil Engineering Co.,Ltd.,Tianjin 300461,China)
出处
《船舶力学》
EI
CSCD
北大核心
2024年第6期907-916,共10页
Journal of Ship Mechanics
基金
水利工程仿真与安全国家重点实验室资助项目。
关键词
托管架
疲劳谱分析
实时监测
对比分析
stinger
fatigue spectrum analysis
real-time monitoring
comparative analysis
