RESEARCH ON LOAD IDENTIFICATION IN TRANSPORTATION PROCESS OF OVERALL BUCKET FOUND OF OFFSHORE WIND TURBINE

Jiang Qi; Dong Xiaofeng; Weng Peiyao; Zhou Huan; Lian Jijian

doi:10.19912/j.0254-0096.tynxb.2021-0289

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (10) : 281-288. DOI: 10.19912/j.0254-0096.tynxb.2021-0289

RESEARCH ON LOAD IDENTIFICATION IN TRANSPORTATION PROCESS OF OVERALL BUCKET FOUND OF OFFSHORE WIND TURBINE

Jiang Qi^1,2, Dong Xiaofeng^1,2, Weng Peiyao^1,2, Zhou Huan^1,2, Lian Jijian

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Abstract

Based on the measurement data of a 3.3 MW offshore wind turbine supported by the wide-shallow bucket foundation, the influence of environmental factors on the structure vibration is firstly explored with acceleration response. Then the bending moment of the bottom section of the tower under different working conditions is calculated using the strain-load relationship. The amplitude of the bending moment in the whole transportation process is investigated and the change rule of the load with environmental factors is analyzed. The results show that, 1） When the wave height increases from 0.2 m to 2 m, the root-mean-square values of acceleration increase by 98%. This means that the wave height is the major cause of the coupled vibration for the integral structure during the transportation; 2） When the wave height is less than 1.0 m, the identified moment at the tower bottom fluctuates between 0 and 10 MN∙m, which is 21.5% of the design moment. When the wave height reaches 1.5 m, the identified moment fluctuates between 10 and 25 MN∙m; 3） When the wave height reaches 2 m, the moment is still within the safe range, arriving at 32 MN∙m, which is 68.9% of the design moment. 4） During the transportation, the transportation strategy should be made according to wave prediction. The overall bucket foundation transportation should be carried out under the wave height less than 2 m to ensure the safety and stability of the integrated structure.

Key words

offshore wind power / bucket foundation / load identification / transportation / wave height

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Jiang Qi, Dong Xiaofeng, Weng Peiyao, Zhou Huan, Lian Jijian. RESEARCH ON LOAD IDENTIFICATION IN TRANSPORTATION PROCESS OF OVERALL BUCKET FOUND OF OFFSHORE WIND TURBINE[J]. Acta Energiae Solaris Sinica. 2022, 43(10): 281-288 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0289

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