摘要
结合广东某地的场地条件和实测风、浪数据,对某5 MW风机单桩支撑结构受到的风、浪荷载进行模拟,并对单桩结构进行时域动力响应分析,从而提取出灌浆连接段的荷载边界条件时程,为进一步分析海上风机灌浆连接段的疲劳性能奠定基础。研究发现,忽略桩体与土壤的相互作用会使单桩结构的基频计算结果产生约6.3%的误差。经过与目标谱和标准风机曲线相对比,验证编写的风、浪荷载谱表达法模拟程序和叶素动量理论风机运行荷载模拟程序是可行的。考虑风机气动阻尼的影响之后,风机在运行状态下的动力响应进入稳态阶段的时长比在停机状态下更短。
In order to analyze the fatigue behavior of grouted connections(GC) of offshore wind turbines, the wind and wave loads on a 5 MW monopile wind turbine support structure are simulated based on the soil condition of a site in Guangdong and the actual measured wind and wave data, then the time domain dynamic analysis of the monopile structure is carried out so as to extract the loading boundary conditions of the GCs and provide the basis for the further analysis of the fatigue performance. The studies show that an error of approximately 6.3% will be produced by neglecting the pile-soil interactions to the fundamental frequency of monopile structure. Comparison of the target spectrum and the standard wind turbine curve verifies the correctness of the simulation programs based separately on the wind and wave load spectrum representation method and the blade element momentum theory. Besides, the time for the dynamic response of wind turbine to get in the steady stage is shorter in operation than in stop conditions when considering the aerodynamic damping of the wind turbine.
作者
王衔
邱松
陈涛
顾祥林
WANG Xian;QIU Song;CHEN Tao;GU Xianglin(China Communication Construction Corporation Third Harbor Engineering Corporation Limited,Shanghai 200032,China;Key Laboratory of Performance Evolution and Control for Engineering Structures of Ministry of Education,Tongji University,Shanghai 200092,China)
出处
《船舶与海洋工程》
2022年第5期1-9,共9页
Naval Architecture and Ocean Engineering
基金
国家重点研发计划(2017YFC1500704)。
关键词
海上风机
单桩结构
风、浪荷载作用
时域动力响应
offshore wind turbine
monopile structure
wind and wave load
time domain dynamic response analysis
