A modified p-y curve model of large-monopiles of offshore wind power plants

被引：0
|
作者：
Sun Y.-L. [1 ]
Xu C.-S. [1 ]
Du X.-L. [1 ]
Du X.-P. [2 ]
Xi R.-Q. [1 ]
机构：
[1] Key Laboratory of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing
[2] Water Conservancy and Hydropower Investigation and Design Institute of Baoding, Baoding, Baoding
来源：
Gongcheng Lixue/Engineering Mechanics | 2021年 / 38卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Diameter; Monopile; Offshore wind power; p-y curve model; Soil depth;
D O I：
10.6052/j.issn.1000-4750.2020.01.0051
中图分类号：
学科分类号：
摘要：
The monopile is one of the most common solutions for the foundation of offshore wind power plants. The p-y curve recommended by API is commonly used to obtain the horizontal displacement of a monopile. For piles of a more than 2 m diameter, the p-y curve model overestimates the initial stiffness of subgrade reaction and yields inaccurate horizontal displacement. An evaluation of the current p-y method was made to obtain the key factors responsible for overestimating the initial stiffness of subgrade reaction. These key factors were amended. A modified p-y curve model was proposed in which the nonlinear impact of the dimeter and depth on the initial stiffness K was considered based on the calculation results of FLAC3D. The developed p-y curve model was compared with test data and the results of the current p-y curve and the previous modified model. The results show that the good agreement between the calculated results of the developed modified p-y model and test values verified the rationality of the modified p-y model. Copyright ©2021 Engineering Mechanics. All rights reserved.
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页码：44 / 53
页数：9
相关论文
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