COMPARATIVE STUDY ON EFFECT OF LOCAL SCOUR AND PROTECTIVE MEASURES OF OFFSHORE WIND POWER FOUNDATION BASED ON FIELD MEASUREMENT

Qiu Xu; Ma Wenguan; Yao Zhongyuan; Yuan Saijie; Yan Shu; Lu Kunpeng

doi:10.19912/j.0254-0096.tynxb.2022-1266

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (12) : 230-237. DOI: 10.19912/j.0254-0096.tynxb.2022-1266

COMPARATIVE STUDY ON EFFECT OF LOCAL SCOUR AND PROTECTIVE MEASURES OF OFFSHORE WIND POWER FOUNDATION BASED ON FIELD MEASUREMENT

Qiu Xu¹, Ma Wenguan¹, Yao Zhongyuan², Yuan Saijie², Yan Shu¹, Lu Kunpeng¹

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Abstract

Local scour of offshore wind farm foundation is a common natural phenomenon, which has an important impact on the safety of supporting structures. The ultimate scour depth of foundation without protection is an important parameter for foundation structure design. The comparison of protection effects of different erosion protection measures is the key factor for the selection of erosion protection measures. In this paper, the relationship between the measured value of brush depth and the calculated value of Qi & Gao formula, Han Haiqian formula and Wang Rukai formula is analyzed based on the measured scour data of an offshore wind farm in Jiangsu Province. At the same time, the protection effects of riprap, solidified soil and sand cover are measured and compared. The results show that the three calculation methods can predict the local scour depth of single pile foundation to a certain extent, and the protection effect of solidified soil, sand blanket and riprap decreases in turn. The relevant research results can provide reference for the design and operation and maintenance management of offshore wind power foundation projects.

Key words

offshore wind turbines / single pile foundation / local erosion / scour depth / scour protection / scour scanning measurement

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Qiu Xu, Ma Wenguan, Yao Zhongyuan, Yuan Saijie, Yan Shu, Lu Kunpeng. COMPARATIVE STUDY ON EFFECT OF LOCAL SCOUR AND PROTECTIVE MEASURES OF OFFSHORE WIND POWER FOUNDATION BASED ON FIELD MEASUREMENT[J]. Acta Energiae Solaris Sinica. 2023, 44(12): 230-237 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1266

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