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

Qiu Xu; Li Hui; Si Guangquan; Wang Jinshou; Zhao Hao; Liu Xin

doi:10.19912/j.0254-0096.tynxb.2023-1555

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (2) : 676-682. DOI: 10.19912/j.0254-0096.tynxb.2023-1555

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

Qiu Xu^1,2, Li Hui^1,2, Si Guangquan³, Wang Jinshou⁴, Zhao Hao^1,2, Liu Xin^1,2

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Abstract

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.

Key words

offshore wind power / local scour / dynamic analysis / damage characteristics / monopile foundation / high-pile foundation

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Qiu Xu, Li Hui, Si Guangquan, Wang Jinshou, Zhao Hao, Liu Xin. IDENTIFICATION AND ANALYSIS OF SCOUR DAMAGE OF OFFSHORE WIND TURBINE FOUNDATION BASED ON MEASURED VIBRATION DATA[J]. Acta Energiae Solaris Sinica. 2025, 46(2): 676-682 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1555

References

[1] 陶伟, 刘溟江, 周国栋, 等, 海床冲刷对海上风电海缆及弯曲限制器的影响研究[J]. 太阳能学报, 2022, 43(11): 186-193.
TAO W, LIU M J, ZHOU G D, et al.Influence of scour on subsea cables and bend restrictors of offshore wind farm[J]. Acta energiae solaris sinica, 2022, 43(11): 186-193.
[2] 刘吉臻, 马利飞, 王庆华, 等. 海上风电支撑我国能源转型发展的思考[J]. 中国工程科学, 2021, 23(1): 149-159.
LIU J Z, MA L F, WANG Q H, et al.Offshore wind power supports China’s energy transition[J]. Strategic study of CAE, 2021, 23(1): 149-159.
[3] ZHANG Q, TANG G Q, LU L, et al.Scour protections of collar around a monopile foundation in steady current[J]. Applied ocean research, 2021, 112: 102718.
[4] SUMER B M.Mathematical modelling of scour: a review[J]. Journal of hydraulic research. 2007, 45(6): 723-735.
[5] 华鑫. 波流耦合作用下单桩基础冲刷及防护研究[D]. 杭州: 浙江大学, 2022.
HUA X.Research on scour and protection of monopile foundation under the combined action of waves and current[D]. Hangzhou: Zhejiang University, 2022.
[6] 王伟, 杨敏. 海上风电机组基础结构设计关键技术问题与讨论[J]. 水力发电学报, 2012, 31(6): 242-248.
WANG W, YANG M.Review and discussion on key technologies in foundation design of offshore wind power[J]. Journal of hydroelectric engineering, 2012, 31(6): 242-248.
[7] 陈琛, 马宏旺, 李玉韬, 等. 冲刷对海上风电单桩基础自振频率影响的研究[J]. 振动与冲击, 2020, 39(22):16-22.
CHEN C, MA H W, LI Y T, et al.Effects of scour on the natural frequency of offshore wind turbine structures[J]. Journal of vibration and shock, 2020, 39(22): 16-22.
[8] 廖蔚茗. 循环荷载作用下粘土场地近海风机单桩式基础变形与受力特性研究[D]. 成都: 西南交通大学, 2018.
LIAO W M.Experimental study of offshore wind turbine with monopile foundation constructed in clayey site subjected to cyclic lateral load[D]. Chengdu: Southwest Jiaotong University, 2018.
[9] API RP 2GEO-2014. Geotechnical and foundation design considerations RP 2GEO-2014. Geotechnical and foundation design considerations[S]. American Petroleum Institute, 2014.
[10] GEORGIADIS M.Development of py curves for layered soils[C]//Geotechnical Practice in Offshore Engineering. ASCE, 1983: 536-545.
[11] 陈凯. 风电塔法兰螺栓松动对结构振动影响数值分析[D]. 哈尔滨: 中国地震局工程力学研究所, 2020.
CHEN K.Numerical analysis of the effect of flange bolt loosening on structural vibration of wind turbine tower[D]. Harbin: Institute of Engineering Mechanics, China Earthquake Administration, 2020.
[12] 龙凯, 丁文杰, 陈卓, 等, 塔筒法兰间隙对螺栓疲劳损伤的影响分析[J]. 太阳能学报, 2021, 42(12):206-211.
LONG K, DING W J, CHEN Z, et al.Effects analysis of flange gap on bolt fatigue damage for wind turbine tower[J]. Acta energiae solaris sinica, 2021, 42(12): 206-211.
[13] 李鹏飞, 张则荣, 张威, 等, 基于应变模态的风机塔筒根部疲劳裂纹损伤检测研究[J].噪声与振动控制, 2023, 43(2): 127-131, 146.
LI P F, ZHANG Z R, ZHANG W, et al.Study on damage detection of fatigue cracks at the root of the wind turbine tower based on strain mode[J]. Noise and vibration control, 2023, 43(2): 127-131, 146.