RISK ANALYSIS OF OFFSHORE WIND BUCKET FOUNDATION PENETRATION INTO SOIL

被引：0

作者：

Wen, Feng ^{[1
]}

Liu, Run ^{[1
]}

Meng, Xiangchuan ^{[1
]}

Hou, Ge ^{[2
]}

机构：

[1] State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation, Tianjin University, Tianjin

[2] School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou

来源：

Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2025年 / 46卷 / 01期

关键词：

bucket foundation; offshore wind power; penetration resistance; risk analysis;

D O I：

10.19912/j.0254-0096.tynxb.2023-1403

中图分类号：

学科分类号：

摘要：

The response surface method based on the nuclear limit learning machine is applied to the risk assessment of penetration of the bucket foundation，and the 6.45 MW bucket foundation of a wind farm in the sea area1（successful installation）and the sea area 2 （installation failure）is the object of the study，and the Montecarlo sampling method is used to randomly generate the cone tip resistance （qs）in the geophysical static sounding (CPT), and the method based on the CPT recommended value and the maximum value is used to predict the sinking required differential pressure，and the maximum differential pressure that can be provided by the pumps is the risk factor. The maximum differential pressure that can be provided is the risk control standard，and the probability of failure of the two machine positions for penetration into soil is obtained to assess the risk of penetration of the two machine positions. The results show that：the greater the spatial variability of the soil body，the greater the probability of the risk of penetration of the bucket foundation. When the coefficient of variation of soil body CV≤0.3，and the failure probability of penetration resistance calculated by using CPT recommended value are less than 10-4，the risk is low and can be used to guide the construction. © 2025 Science Press. All rights reserved.

引用

页码：115 / 124

页数：9

共 29 条

[1]

MENG X C, LIU R，, HOU K Y，, Et al., Clay strength in calculation of penetration resistance of offshore wind bucket foundation［J］, Chinese journal of geotechnical engineering, 46, pp. 97-101

[2]

ZHANG Y F., Case analysis of installation failed for bucket foundation［J］, Marine technology, 6, pp. 16-19, (2014)

[3]

CHEN F., Research on the soil-skirt interaction of suction buckets for wind turbines during installation in sand［D］, (2014)

[4]

LI C F，, Et al., Suction penetration characteristics and resistance calculation of bucket foundation in sand［J］, Applied ocean research, 127, (2022)

[5]

IBSEN L B., Medium-scale laboratory model of mono-bucket foundation for installation tests in sand［J］, Canadian geotechnical journal, 56, 8, pp. 1142-1153, (2019)

[6]

YAN S W, Et al., Experiment on penetration resistance and soil plug development during suction caisson penetration in soft clay［J］, Journal of Tianjin University （science and technology, 49, 10, pp. 1027-1033, (2016)

[7]

SUN Y., Imperfection sensitivity of composite cylindrical shell under external pressure［D］, (2017)

[8]

Research on the critical buckling pressure of bucket foundations with inner compartments for offshore wind turbines［J］, Journal of Ocean University of China, 22, 2, pp. 419-428, (2023)

[9]

ZHANG P Y，, HUANG X X., Application research on suction bucket foundation for offshore wind power［J］, Southern energy construction, 5, 4, pp. 1-11, (2018)

[10]

Geotechnical design and installation of suction anchors in clay［S］

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