EFFECT OF RESIDUAL PILE PIT ON INCLINATION OF ADJACENT COMPOSITE BUCKET FOUNDATION

Jia Zhaolin; Li Xinyi; Lian Jijian; Min Qiaoling; Yuan Xinyong; Zhang Yongxu

doi:10.19912/j.0254-0096.tynxb.2021-1075

PDF(2268 KB)

Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (11) : 166-171. DOI: 10.19912/j.0254-0096.tynxb.2021-1075

EFFECT OF RESIDUAL PILE PIT ON INCLINATION OF ADJACENT COMPOSITE BUCKET FOUNDATION

Jia Zhaolin^1~3, Li Xinyi¹, Lian Jijian^1~3, Min Qiaoling³, Yuan Xinyong³, Zhang Yongxu⁴

Author information +

History +

Abstract

For an offshore wind power project, the influences of the distance to foundation and the size of pile pits on the inclination of composite bucket foundation at mud surface are analyzed using three-dimensional numerical software ABAQUS. The coefficient γ and sensitivity coefficient K are defined, which can reflect the filling and consolidation degree of pile pit. With the increase of pile pit size, the inclination of composite bucket foundation at mud surface is non-linearly increasing to the side of pile pit. When the depth of pile pit is greater than the penetrated depth of composite bucket foundation, the inclination increases faster. The inclination of composite bucket foundation at mud surface is more sensitive to the strength of the backfill soil inside pile pits with large depth and close distance. The research in this paper is intended to provide theoretical analyses for the selection and layout of installation vessel for composite bucket foundation and wind turbine.

Key words

offshore wind turbines / numerical models / quantitative analysis / composite bucket foundation / inclination rate / pile pit depth

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Jia Zhaolin, Li Xinyi, Lian Jijian, Min Qiaoling, Yuan Xinyong, Zhang Yongxu. EFFECT OF RESIDUAL PILE PIT ON INCLINATION OF ADJACENT COMPOSITE BUCKET FOUNDATION[J]. Acta Energiae Solaris Sinica. 2022, 43(11): 166-171 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1075

References

[1] LIU Y G, GUO Y H, DING H Y, et al.Failure envelopes of wide-shallow composite bucket foundation for offshore wind turbines in silty sand[J]. Transactions of Tianjin University, 2018, 24(2): 84-92.
[2] LIU R, CHEN G S, LIAN J J, et al.Vertical bearing behaviour of the composite bucket shallow foundation of offshore wind turbines[J]. Journal of renewable and sustainable energy, 2015, 7(1): 1-21.
[3] 练继建, 贺蔚, 吴慕丹, 等. 带分舱板海上风电复合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.
[4] 丁红岩, 贾楠, 张浦阳, 等. 海上风电复合筒型基础粉质黏土下沉试验分析[J]. 天津大学学报(自然科学与工程技术版), 2017, 50(9): 893-899.
DING H Y, JIA N, ZHANG P Y, et al.Analysis of penetration test of composite bucket foundations for offshore wind turbines in silty clay[J]. Journal of Tianjin University(science and technology edition), 2017, 50(9): 893-899.
[5] 祁越, 刘润, 练继建. 无黏性土中复合筒型基础负压下沉模型试验[J]. 岩土力学, 2018, 39(1): 146-157.
QI Y, LIU R, LIAN J J.Model test of bucket foundation suction installation in cohesionless soil[J]. Rock and soil mechanics, 2018, 39(1): 146-157.
[6] 丁红岩, 刘建辉. 钻井船拔桩对筒基平台稳定性影响的敏感分析[J]. 岩土力学, 2007, 28(6): 142-148.
DING H Y, LIU J H.Sensitivity analysis of effect on stability of platform with bucket foundation during pile pulling[J]. Rock and soil mechanics, 2007, 28(6): 142-148.
[7] YANG M, SUN Q, LI W C, et al.Three-dimensional finite element analysis on effects of tunnel construction on nearby pile foundation[J]. Journal of Central South University of Technology, 2011, 18(3): 909-916.
[8] 陈福全, 汪金卫, 刘毓氚. 基坑开挖时邻近桩基性状的数值分析[J]. 岩土力学, 2008, 29(7): 1971-1976.
CHEN F Q, WANG J W, LIU Y C.Numerical analysis of pile response due to braced excavation induced soil lateral movement[J]. Rock and soil mechanics, 2008, 29(7): 1971-1976.
[9] 钱建固, 周聪睿, 顾剑波. 基坑开挖诱发周围土体水平移动的解析解[J]. 岩土力学, 2016, 37(12): 3380-3385.
QIAN J G, ZHOU C R, GU J B.Analytical solution for excavation induced soil horizontal movement[J]. Rock and soil mechanics, 2016, 37(12): 3380-3385.
[10] 木林隆, 黄茂松. 基于小应变特性的基坑开挖对邻近桩基影响分析方法[J]. 岩土工程学报, 2014, 36(S2): 304-310.
MU L L, HUANG M S.Small-strain behavior based method for effect of excavations on adjacent pile foundations[J]. Chinese journal of geotechnical engineering, 2014, 36(S2): 304-310.
[11] MEYERHOF G G.Stability of slurry trench cuts in saturated clay[C]//Performance of Earth and Earth-Supported Structures, ASCE, New York, USA, 1972: 1451-1466.
[12] BRITTO A M, KUSAKABE O.Stability of axisymmetric excavations in clays[J]. Journal of geotechnical engineering, 1983, 109(5): 666-681.
[13] HOSSAIN M S, HU Y, RANDOLPH M F, et al.Limiting cavity depth for spudcan foundations penetrating clay[J]. Géotechnique, 2005, 55: 679-690.
[14] DNV GL AS, Offshore standard DNV-OS-J101 design of offshore wind turbine structures[S].