Acta Optica Sinica, Volume. 41, Issue 13, 1306016(2021)
Horizontal Load Test on Offshore Wind Turbine Pile Foundation Based on BOTDR
With the development of offshore wind power generation technology, the powers of wind turbines are increasing, leading to higher demands for the bearing capacity of their pile foundations. Thus, load performance test on pile foundations is needed to ensure the safety and reliability of engineering design. In this study, we first established a Brillouin optical time-domain reflectometry (BOTDR) system with a spatial resolution of 1 m. Then, this system was used to conduct horizontal thrust-loading tests on the pile foundation of an offshore wind turbine in the Jiaxing region of Hangzhou Bay. The deformation and displacement distributions of the pile foundation were determined by measuring and analyzing the strain distributions and positions of the maximum strain of the pile foundation under different horizontal loads. Results show that the horizontal bearing capacity of the tested pile foundation can withstand the expected maximum load of 700 kN, and the BOTDR distributed optical fiber sensing technology in pile foundation tests for offshore wind turbines is validated.
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Hongying Zhang, Zhiyuan Yang, Rongpeng Cui, Peng Guan, Yongkang Dong. Horizontal Load Test on Offshore Wind Turbine Pile Foundation Based on BOTDR[J]. Acta Optica Sinica, 2021, 41(13): 1306016
Category: Fiber Optics and Optical Communications
Received: Dec. 4, 2020
Accepted: Mar. 8, 2021
Published Online: Jul. 11, 2021
The Author Email: Dong Yongkang (aldendong@163.com)