摘要
光伏设施发电在陆地已经广泛应用,将光伏设施做成漂浮式结构安装在近海,是目前国内外海洋工程领域的热门和前沿研究领域。海上光伏发电设施遭受交变载荷的作用,极易发生疲劳破坏。针对海上多刚体组成的浮式光伏发电设施,建立多体有限元模型,由海区波浪散布图计算载荷并计算结构的热点应力,基于Palmgren-Miner疲劳累积损伤理论和S-N曲线,计算分析结构的疲劳损伤。结果表明:研发的近海光伏发电结构,主要疲劳损伤点发生在水下,波浪载荷是引起疲劳损伤的关键载荷,该结构的疲劳强度满足使用期内安全要求。
Photovoltaic facilities have been widely used in land.Currently,installing offshore floating photovoltaic structures is a hot and cutting-edge research field in the global field of ocean engineering.The offshore floating photovoltaic structures are subject to the effect of wind and wave load,which is easy to cause fatigue damage.In this paper,a multi-body finite element model is established for offshore floating photovoltaic structures composed of multiple rigid bodies at sea,the wave load is calculated from the sea wave distribution,and the hot spot stress of the structure is calculated.The fatigue damage of the structure is calculated and analyzed based on the assumption of linear cumulative damage(Palmgren-Miner rule)and S-N curves.The results show that the main fatigue damage point of the offshore floating photovoltaic structure occurs underwater,the wave load is the key load to fatigue damage,and the fatigue strength of this structure can meet the safety requirements during the service life.
作者
张若瑜
范心语
苏江
唐友刚
ZHANG Ruoyu;FAN Xinyu;SU Jiang;TANG Yougang(State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation,Tianjin University,Tianjin 300350,China;Tianjin Key Laboratory of Port and Ocean Engineering,Tianjin University,Tianjin 300350,China;Sunshine Water Surface Photovoltaic Technology Co.,Ltd.,Hefei 230061,China)
出处
《海洋技术学报》
2025年第1期115-122,共8页
Journal of Ocean Technology
基金
国家自然科学基金资助项目(51879188,52471298)。
