STUDY ON SEEPAGE CHARACTERISTICS AND CRITICAL DIFFERENTIAL PRESSURE OF SUCTION BUCKET FOUNDATIONS WITH COMPLEX CONFIGURATIONS FOR OFFSHORE WIND TURBINES

Yang Xu; Wang Jie; Lian Jijian; Yao Ye; Liu Mengmeng

doi:10.19912/j.0254-0096.tynxb.2024-1294

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (11) : 741-746. DOI: 10.19912/j.0254-0096.tynxb.2024-1294

STUDY ON SEEPAGE CHARACTERISTICS AND CRITICAL DIFFERENTIAL PRESSURE OF SUCTION BUCKET FOUNDATIONS WITH COMPLEX CONFIGURATIONS FOR OFFSHORE WIND TURBINES

Yang Xu^1,2, Wang Jie¹, Lian Jijian^1,2, Yao Ye^1,2, Liu Mengmeng¹

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Abstract

This study employs finite element simulations to analyze the seepage field distribution during the overall sinking and leveling conditions of three complex configurations： hexagonal bucket, clustered bucket, and annular interlocking bucket. The seepage characteristics are investigated, and formulas for calculating critical differential pressures during sinking and leveling conditions are established. And size effect validations of the formulas are conducted. The results indicate that the differential pressure for leveling decreases rapidly with increasing tilt angles for all three bucket types. The proposed methods for calculating critical differential pressures due to seepage in these complex bucket foundations exhibit an error range of approximately ±5% within engineering scales.

Key words

offshore wind power / bucket foundation / seepage field / critical differential pressure / leveling / complex configurations / seepage characteristics

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Yang Xu, Wang Jie, Lian Jijian, Yao Ye, Liu Mengmeng. STUDY ON SEEPAGE CHARACTERISTICS AND CRITICAL DIFFERENTIAL PRESSURE OF SUCTION BUCKET FOUNDATIONS WITH COMPLEX CONFIGURATIONS FOR OFFSHORE WIND TURBINES[J]. Acta Energiae Solaris Sinica. 2025, 46(11): 741-746 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1294

References

[1] 李涛, 赵荥, 贾楠, 等. 复合筒型基础沉贯调平过程中土体渗流特性研究[J]. 太阳能学报, 2021, 42(12): 253-260.
LI T, ZHAO X, JIA N, et al.Research on soil seepage characteristics in suction penetration leveling process of composite bucket foundation[J]. Acta energiae solaris sinica, 2021, 42(12): 253-260.
[2] 徐成根, 江海涛, 徐孟涛, 等. 复合桶形基础负压沉贯渗流特性研究[J]. 地基处理, 2023, 5(2): 126-132.
XU C G, JIANG H T, XU M T, et al.Numerical study of seepage characteristics of composite suction caisson under suction installation[J]. Journal of ground improvement, 2023, 5(2): 126-132.
[3] 刘俊峰, 倪道俊, 校建东, 等. 海上风电单柱复合筒型基础沉放过程分析[J]. 太阳能学报, 2023, 44(3): 239-243.
LIU J F, NI D J, XIAO J D, et al.Analysis of penetrating process of single-column composite bucket foundation for offshore wind turbine[J]. Acta energiae solaris sinica, 2023, 44(3): 239-243.
[4] 郭炳川, 孟祥传, 杨林林, 等. 砂土中筒型基础临界吸力计算方法研究[J]. 太阳能学报, 2024, 45(6): 599-606.
GUO B C, MENG X C, YANG L L, et al.Study on calculation method of critical suction of bucket foundation in sand[J]. Acta energiae solaris sinica, 2024, 45(6): 599-606.
[5] SENDERS M, RANDOLPH M F.CPT-based method for the installation of suction caissons in sand[J]. Journal of geotechnical and geoenvironmental engineering, 2009, 135(1): 14-25.
[6] HOULSBY G T, BYRNE B W.Design procedures for installation of suction caissons in clay and other materials[J]. Geotechnical engineering, 2005, 158(2): 75-82.
[7] 丁红岩, 许云龙, 张浦阳, 等. 复合筒型基础临界负压试验分析[J]. 天津大学学报(自然科学与工程技术版), 2022, 55(6): 603-610.
DING H Y, XU Y L, ZHANG P Y, et al.Experimental analysis on critical suction of composite bucket foundation[J]. Journal of Tianjin University(science and technology), 2022, 55(6): 603-610.
[8] 贾沼霖, 李新义, 练继建, 等. 复合筒型基础负压沉放调平允许压差研究[J]. 太阳能学报, 2023, 44(9): 384-389.
JIA Z L, LI X Y, LIAN J J, et al.Study on allowable differential air pressure of leveling for suction installation of composite bucket foundation[J]. Acta energiae solaris sinica, 2023, 44(9): 384-389.
[9] 练继建, 王海军, 刘润, 等. 一种六边形海上风电筒型基础结构: CN212427178U[P].2021-01-29.
LIAN J J, WANG H J, LIU R, et al. Hexagonal offshore wind power barrel type foundation structure: CN212427178U[P].2021-01-29.
[10] 练继建, 朱航, 刘润, 等. 一种海上风电五连筒导管架结构: CN114232672A[P].2022-03-25.
LIAN J J, ZHU H, LIU R, et al. Offshore wind power five-connected-cylinder jacket structure: CN114232672A[P].2022-03-25.
[11] 王海军, 刘昌, 郭耀华, 等. 一种海上风电多筒环形咬合基础结构: CN114150694A[P].2022-03-08.
WANG H J, LIU C, GUO Y H, et al. Offshore wind power multi-cylinder annular occlusion foundation structure: CN114150694A[P].2022-03-08.
[12] LIAN J J, LI X Y, JIA Z L, et al.Study on penetration resistance for thin-walled bucket foundation in muddy clay[J]. Ocean engineering, 2023, 279: 114321.
[13] 马文冠. 海上风电筒型基础入土沉放过程及减阻措施研究[D]. 天津: 天津大学, 2021.
MA W G.Research on installation and penetration resistance reduction technology of bucket foundation for offshore wind turbine[D]. Tianjin: Tianjin University, 2021.
[14] 练继建, 陈飞, 杨旭, 等. 海上风机复合筒型基础负压沉放调平[J]. 天津大学学报(自然科学与工程技术版), 2014, 47(11): 987-993.
LIAN J J, CHEN F, YANG X, et al.Suction installation and leveling of composite bucket foundation for offshore wind turbines[J]. Journal of Tianjin University(science and technology), 2014, 47(11): 987-993.
[15] FELD T.Suction buckets, a new innovative foundation concept, applied to offshore wind turbines[D]. Aalborg: Aalborg University, 2001.