STUDY OF COLLABORATIVE BEARING CAPACITY OF BUCKET SKIRT OF SECANT PILED BUCKET FOUNDATION FOR ONSHORE WIND TURBINE

Wang Haijun; Xu Ying; Deng Mingji; Guo Yaohua; Liu Yuhui; Gao Jianhui

doi:10.19912/j.0254-0096.tynxb.2023-1717

PDF(3987 KB)

Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (2) : 539-547. DOI: 10.19912/j.0254-0096.tynxb.2023-1717

STUDY OF COLLABORATIVE BEARING CAPACITY OF BUCKET SKIRT OF SECANT PILED BUCKET FOUNDATION FOR ONSHORE WIND TURBINE

Wang Haijun^1,2, Xu Ying^1,2, Deng Mingji³, Guo Yaohua^1,2, Liu Yuhui³, Gao Jianhui³

Author information +

History +

Abstract

Based on engineering examples, field pile test of three interlocking piles is carried out near the prototype site of secant piled bucket foundation to explore the actual collaborative bearing capacity of the secant pile under horizontal load. Meanwhile, the bearing capacity of the foundation of the secant piled bucket skirt under the condition of weakening and failure of the secant face are studied by using finite element method. The results show that in the field pile test, under the action of failure load, the secant pile still maintains good integrity, which can move together as a whole, and has at least 4.2 times the safety factor. The weakening of the secant face strength has little effect on the bearing capacity and deformation of the foundation under the premise of ensuring the continuous integrity of the bucket skirt. The failure of secant face of the bucket skirt makes it difficult to carry the load synergistically, ultimately leading to a significant decrease in the foundation bearing capacity.

Key words

onshore wind power / secant piled bucket foundation / collaborative bearing capacity / field pile test / finite element analyses

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Wang Haijun, Xu Ying, Deng Mingji, Guo Yaohua, Liu Yuhui, Gao Jianhui. STUDY OF COLLABORATIVE BEARING CAPACITY OF BUCKET SKIRT OF SECANT PILED BUCKET FOUNDATION FOR ONSHORE WIND TURBINE[J]. Acta Energiae Solaris Sinica. 2025, 46(2): 539-547 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1717

References

[1] 廖中林, 徐传鹏. 地铁车站基坑钻孔咬合桩施工与设计[J]. 交通科技与经济, 2013, 15(2): 24-27.
LIAO Z L, XU C P.Design and construction of borehole cast-in-place piles in the subway station pit[J]. Technology & economy in areas of communications, 2013, 15(2): 24-27.
[2] 汪嘉钰, 刘润, 陈广思, 等. 海上风电宽浅式筒型基础竖向极限承载力上限解[J]. 太阳能学报, 2022, 43(3): 294-300.
WANG J Y, LIU R, CHEN G S, et al.Upper bound solution limit analysis of vertical bearing capacity of shallow bucket foundation for offshore wind turbines[J]. Acta energiae solaris sinica, 2022, 43(3): 294-300.
[3] LIU M M, YANG M, WANG H J.Bearing behavior of wide-shallow bucket foundation for offshore wind turbines in drained silty sand[J]. Ocean engineering, 2014, 82: 169-179.
[4] 武科, 栾茂田, 范庆来, 等. 滩海桶形基础破坏机制及极限承载力分析研究[J]. 岩土工程学报, 2008, 30(3): 394-398.
WU K, LUAN M T, FAN Q L, et al.Failure mechanism and ultimate bearing capacity of bucket foundation in shallow water[J]. Chinese journal of geotechnical engineering, 2008, 30(3): 394-398.
[5] AUBENY C, MURFF J D.Simplified limit solutions for the capacity of suction anchors under undrained conditions[J]. Ocean engineering, 2005, 32(7): 864-877.
[6] LIU R, CHEN G S, LIAN J J, et al.Vertical bearing behaviour of the composite bucket shallow foundation of offshore wind turbines[J]. 2015, 7(1): 013123.
[7] ZHU B, KONG D Q, CHEN R P, et al.Installation and lateral loading tests of suction caissons in silt[J]. Canadian geotechnical journal, 2011, 48(7): 1070-1084.
[8] 刘润, 王磊, 丁红岩, 等. 复合加载模式下不排水饱和软黏土中宽浅式筒型基础地基承载力包络线研究[J]. 岩土工程学报, 2014, 36(1): 146-154.
LIU R, WANG L, DING H Y, et al.Failure envelopes of large-diameter shallow buried bucket foundation in undrained saturated soft clay under combined loading conditions[J]. Chinese journal of geotechnical engineering, 2014, 36(1): 146-154.
[9] 蔡正银, 王清山, 关云飞, 等. 分舱板对海上风电复合筒型基础承载特性的影响研究[J]. 岩土工程学报, 2021, 43(4): 751-759.
CAI Z Y, WANG Q S, GUAN Y F, et al.Influences of bulkheads on bearing characteristics of composite bucket foundation of offshore wind turbines[J]. Chinese journal of geotechnical engineering, 2021, 43(4): 751-759.
[10] 闫澍旺, 霍知亮, 孙立强, 等. 海上风电机组筒型基础工作及承载特性研究[J]. 岩土力学, 2013, 34(7): 2036-2042.
YAN S W, HUO Z L, SUN L Q, et al.Study of working mechanism and bearing capacity behavior of bucket foundation for offshore wind turbine[J]. Rock and soil mechanics, 2013, 34(7): 2036-2042.
[11] XU Y, WANG H J, ZHANG L Y, et al.Research on bearing capacity of secant piled-bucket foundation in saturated clay[J]. Sustainability, 2022, 14(18): 11511.
[12] WANG H J, XU Y, GUO Y H, et al.Research on bearing behavior of secant pile bucket foundation for onshore wind turbines[J]. structures, 2023, 58: 105376.
[13] DING H Y, HU R Q, ZHANG P Y, et al.Load bearing behaviors of composite bucket foundations for offshore wind turbines on layered soil under combined loading[J]. Ocean engineering, 2020, 198: 106997.
[14] 姜彤, 何天乐, 王璇, 等. 波浪荷载下海上风力机桩基础滞回效应及水平承载力变化特性研究[J]. 太阳能学报, 2024, 45(8): 546-553.
JIANG T, HE T L, WANG X, et al.Study on hysteresis effect and horizontal bearing capacity of pile foundation for offshore wind turbine under wave load[J]. Acta energiae solaris sinica , 2024, 45(8): 546-553.
[15] 丁红岩, 章李卉, 张浦阳, 等. 海上临坡宽浅式筒型基础承载特性研究[J]. 太阳能学报, 2021, 42(2): 163-171.
DING H Y, ZHANG L H, ZHANG P Y, et al.Bearing capacity analysis of large diameter and shallow buried bucket foundation near slope for offshore wind turbine[J]. Acta energiae solaris sinica, 2021, 42(2): 163-171.
[16] 练继建, 贺蔚, 吴慕丹, 等. 带分舱板海上风电筒型基础承载特性试验研究[J]. 岩土力学, 2016, 37(10): 2746-2752.
LIAN J J, HE W, WU M D, et al.Experimental study of bearing characteristic of bucket foundation of offshore wind turbine with bulkheads[J]. Rock and soil mechanics, 2016, 37(10): 2746-2752.
[17] DING H Y, LIU Y G, ZHANG P Y, et al.Model tests on the bearing capacity of wide-shallow composite bucket foundations for offshore wind turbines in clay[J]. Ocean engineering, 2015, 103: 114-122.
[18] LIU M M, LIAN J J, YANG M.Experimental and numerical studies on lateral bearing capacity of bucket foundation in saturated sand[J]. Ocean engineering, 2017, 144: 14-20.
[19] WANG X F, ZENG X W, LI J L.Vertical performance of suction bucket foundation for offshore wind turbines in sand[J]. Ocean engineering, 2019, 180: 40-48.
[20] KOU H L, FANG W W, ZHOU N, et al.Dynamic response of single-bucket foundation in clay under vertical variable amplitude cyclic loadings[J]. Ocean engineering, 2023, 273: 113973.
[21] LIAN J J, ZHAO Y, DONG X F, et al.An experimental investigation on long-term performance of the wide-shallow bucket foundation model for offshore wind turbine in saturated sand[J]. Ocean engineering, 2021, 228: 108921.
[22] 刘丰军, 廖少明, 李文林, 等. 钻孔咬合桩挡土结构咬合面的剪切性能研究[J]. 岩土工程学报, 2006, 28(S1): 1445-1449.
LIU F J, LIAO S M, LI W L, et al.Studies on secant face shear performance of secant boring pile retaining structure[J]. Chinese journal of geotechnical engineering, 2006, 28(S1): 1445-1449.
[23] 廖少明, 周学领, 宋博, 等. 咬合桩支护结构的抗弯承载特性研究[J]. 岩土工程学报, 2008, 30(1): 72-78.
LIAO S M, ZHOU X L, SONG B, et al.Study on the bending performance of secant pile retaining wall[J]. Chinese journal of geotechnical engineering, 2008, 30(1): 72-78.