粘土中海上风力发电机桩基多向侧向行为的数值模拟

IF 4.6 2区 工程技术 Q1 ENGINEERING, CIVIL
Shasha Ren , Deqiong Kong , Yueming Du , Yuan Chen , Bin Zhu
{"title":"粘土中海上风力发电机桩基多向侧向行为的数值模拟","authors":"Shasha Ren ,&nbsp;Deqiong Kong ,&nbsp;Yueming Du ,&nbsp;Yuan Chen ,&nbsp;Bin Zhu","doi":"10.1016/j.oceaneng.2025.121817","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the lateral behavior of pile foundations for offshore wind turbines (OWT) under various loading paths in clay, including arc-shaped and cross-shaped trajectories, as well as the impact of occasional deviated loads on displacement accumulation. A finite element model that incorporates soil softening behaviour is established and validated against centrifuge tests conducted by the authors as well as reported in the literature. Following that a parametric study is conducted to explore the complex pile-soil interactions and examine how multi-directional loading influences the behavior of pile foundations. The results show that multi-directional loading significantly enhances pile displacement accumulation, with non-coaxial behavior observed as a mismatch between peak load and peak displacement. It is for the first time revealed that the most undesirable deviated loading angle ranges between 45° and 60°, and even one occasional event of deviated load can substantially impact cumulative displacement. The study further emphasizes the need to introduce a multi-directional loading factor to the design of OWT pile foundations.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"338 ","pages":"Article 121817"},"PeriodicalIF":4.6000,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Numerical modeling of multi-directional lateral behaviour of pile foundations for offshore wind turbines in clay\",\"authors\":\"Shasha Ren ,&nbsp;Deqiong Kong ,&nbsp;Yueming Du ,&nbsp;Yuan Chen ,&nbsp;Bin Zhu\",\"doi\":\"10.1016/j.oceaneng.2025.121817\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study investigates the lateral behavior of pile foundations for offshore wind turbines (OWT) under various loading paths in clay, including arc-shaped and cross-shaped trajectories, as well as the impact of occasional deviated loads on displacement accumulation. A finite element model that incorporates soil softening behaviour is established and validated against centrifuge tests conducted by the authors as well as reported in the literature. Following that a parametric study is conducted to explore the complex pile-soil interactions and examine how multi-directional loading influences the behavior of pile foundations. The results show that multi-directional loading significantly enhances pile displacement accumulation, with non-coaxial behavior observed as a mismatch between peak load and peak displacement. It is for the first time revealed that the most undesirable deviated loading angle ranges between 45° and 60°, and even one occasional event of deviated load can substantially impact cumulative displacement. The study further emphasizes the need to introduce a multi-directional loading factor to the design of OWT pile foundations.</div></div>\",\"PeriodicalId\":19403,\"journal\":{\"name\":\"Ocean Engineering\",\"volume\":\"338 \",\"pages\":\"Article 121817\"},\"PeriodicalIF\":4.6000,\"publicationDate\":\"2025-06-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ocean Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0029801825015239\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CIVIL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ocean Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0029801825015239","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 0

摘要

本文研究了海上风力发电机(OWT)桩基在粘土中不同荷载路径下的横向行为,包括弧形和十字形轨迹,以及偶尔偏离荷载对位移积累的影响。建立了一个包含土壤软化行为的有限元模型,并对作者进行的离心机试验以及文献报道进行了验证。然后进行了参数化研究,探讨了复杂的桩土相互作用,并研究了多向荷载对桩基行为的影响。结果表明:多向荷载显著增强了桩身位移积累,且表现为峰值荷载与峰值位移失配的非同轴行为;首次揭示了最不期望的加载角在45°~ 60°之间,即使是一次偶然的加载偏离事件也会对累积位移产生重大影响。研究进一步强调了将多向荷载系数引入灌注桩基础设计的必要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical modeling of multi-directional lateral behaviour of pile foundations for offshore wind turbines in clay
This study investigates the lateral behavior of pile foundations for offshore wind turbines (OWT) under various loading paths in clay, including arc-shaped and cross-shaped trajectories, as well as the impact of occasional deviated loads on displacement accumulation. A finite element model that incorporates soil softening behaviour is established and validated against centrifuge tests conducted by the authors as well as reported in the literature. Following that a parametric study is conducted to explore the complex pile-soil interactions and examine how multi-directional loading influences the behavior of pile foundations. The results show that multi-directional loading significantly enhances pile displacement accumulation, with non-coaxial behavior observed as a mismatch between peak load and peak displacement. It is for the first time revealed that the most undesirable deviated loading angle ranges between 45° and 60°, and even one occasional event of deviated load can substantially impact cumulative displacement. The study further emphasizes the need to introduce a multi-directional loading factor to the design of OWT pile foundations.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Ocean Engineering
Ocean Engineering 工程技术-工程:大洋
CiteScore
7.30
自引率
34.00%
发文量
2379
审稿时长
8.1 months
期刊介绍: Ocean Engineering provides a medium for the publication of original research and development work in the field of ocean engineering. Ocean Engineering seeks papers in the following topics.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信