基于实测振动数据的海上风电基础冲刷损伤识别分析  

IDENTIFICATION AND ANALYSIS OF SCOUR DAMAGE OF OFFSHORE WIND TURBINE FOUNDATION BASED ON MEASURED VIBRATION DATA

作　　者：邱旭 李会 司广全 王金寿 赵昊 刘鑫 Qiu Xu;Li Hui;Si Guangquan;Wang Jinshou;Zhao Hao;Liu Xin(China Huaneng Group Clean Energy Technology Research Institute Co.,Ltd.,Beijing 102209,China;National Energy Offshore Wind Power Engineering and Operation Research Center,Beijing 102209,China;China Huaneng Power International,Inc,Beijing 100031,China;Yantai Power Plant of Huaneng Shandong Power Generation Co.,Ltd.,Yantai 264001,China)

机构地区：[1]中国华能集团清洁能源技术研究院有限公司,北京102209 [2]国家能源海上风电工程与运行技术研发中心,北京102209 [3]华能国际电力股份有限公司,北京100031 [4]华能山东发电有限公司烟台发电厂,烟台264001

出　　处：《太阳能学报》2025年第2期676-682,共7页Acta Energiae Solaris Sinica

基　　金：华能集团总部科技项目“海上风电全景监测与智能评估技术研究及智能装备开发(2)”(HNKJ20-H72)。

摘　　要：运用数值模型分析桩周海床冲刷对海上风电机组动力特性的影响,发现单桩基础的风电机组自振频率对冲刷较为敏感,而高桩承台基础的机组则不敏感,可通过分析单桩基础机组的频率变化来反演桩周冲淤变化情况。进一步地,选取了3台典型机组,利用机组的振动实测数据及冲刷扫测数据,分析了振动信号时变特性同桩周海床冲淤变化的关系。当桩周海床发生冲刷、淤积或基本不变时,机组自振频率呈现出下降、上升和基本不变的趋势,验证了通过机组实测振动信号判断桩周海床冲淤特性的可行性。In this paper,a numerical model is used to analyze the influence of scour around foundations on the dynamic characteristics of offshore wind turbines.The natural vibration frequency of wind turbines with monopile foundation is more sensitive to scour,while that of turbines with multi-pile cap foundation is not.The variation of scour and deposition around piles can be inverted by analyzing the frequency variation of monopile foundation.Further,three typical wind turbines are selected,and the relationship between the time-varying characteristics of vibration signals and the scour and deposition changes of the sea bed around the pile was analyzed by using the measured vibration data and scour scanning data of the wind turbines.When the sea bed around the pile was scour,silted or basically unchanged,the natural vibration frequency of the wind turbine shows a trend of decreasing,increasing and basically unchanged.The feasibility of judging the scouring and silting characteristics of the sea bed around foundations by the measured vibration signal of the wind turbine is verified.

关 键 词：海上风电 局部冲刷 动力特性 损伤识别 单桩基础 高桩承台 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]