Upper bound solution of the vertical bearing capacity of the pile-bucket composite foundation of offshore wind turbines

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures Pub Date : 2024-11-26 DOI:10.1016/j.marstruc.2024.103728

Guangsi Chen, Hao Gu, Run Liu, Tianliang Li, Chao Liang

{"title":"Upper bound solution of the vertical bearing capacity of the pile-bucket composite foundation of offshore wind turbines","authors":"Guangsi Chen, Hao Gu, Run Liu, Tianliang Li, Chao Liang","doi":"10.1016/j.marstruc.2024.103728","DOIUrl":null,"url":null,"abstract":"<div><div>Pile-bucket composite foundations are regarded as a promising solution for offshore wind power infrastructure. However, accurately assessing their vertical ultimate bearing capacity remains a technical challenge. Therefore, establishing an upper bound solution of the ultimate bearing capacity of the composite foundations is of significant importance for their promotion and application. This study begins with small-scale model tests, using Abaqus for modeling based on the relevant test conditions. Next, following model validation, the vertical bearing capacity of the composite foundations under different <em>H/D</em> ratios and the corresponding soil failure modes are investigated. According to the upper limit method and the ultimate equilibrium theory, the kinematic velocity field is subsequently constructed to derive the upper bound solution of the vertical bearing capacity. Finally, the effectiveness and accuracy of the proposed theoretical upper bound solution are verified against the results of model tests, and this study hopes to provide a reference for the future design of vertical bearing capacity of pile-bucket composite foundations.</div></div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":"100 ","pages":"Article 103728"},"PeriodicalIF":4.0000,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Marine Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0951833924001564","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

Abstract

Pile-bucket composite foundations are regarded as a promising solution for offshore wind power infrastructure. However, accurately assessing their vertical ultimate bearing capacity remains a technical challenge. Therefore, establishing an upper bound solution of the ultimate bearing capacity of the composite foundations is of significant importance for their promotion and application. This study begins with small-scale model tests, using Abaqus for modeling based on the relevant test conditions. Next, following model validation, the vertical bearing capacity of the composite foundations under different H/D ratios and the corresponding soil failure modes are investigated. According to the upper limit method and the ultimate equilibrium theory, the kinematic velocity field is subsequently constructed to derive the upper bound solution of the vertical bearing capacity. Finally, the effectiveness and accuracy of the proposed theoretical upper bound solution are verified against the results of model tests, and this study hopes to provide a reference for the future design of vertical bearing capacity of pile-bucket composite foundations.

查看原文本刊更多论文

海上风力涡轮机桩桶复合地基垂直承载力的上限值解法

桩桶复合地基被认为是海上风电基础设施的一种有前途的解决方案。然而，准确评估其垂直极限承载力仍是一项技术挑战。因此，建立复合地基极限承载力的上限解决方案对其推广和应用具有重要意义。本研究首先进行小规模模型试验，根据相关试验条件使用 Abaqus 进行建模。接着，在模型验证后，研究了不同高径比下复合地基的竖向承载力以及相应的土体破坏模式。随后，根据上限法和极限平衡理论，构建运动速度场，得出竖向承载力的上限解。最后，根据模型试验结果验证了所提出的理论上限解的有效性和准确性，本研究希望能为今后桩桶复合地基的竖向承载力设计提供参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Marine Structures 工程技术-工程：海洋

CiteScore

8.70

自引率

7.70%

发文量

157

审稿时长

6.4 months

期刊介绍： This journal aims to provide a medium for presentation and discussion of the latest developments in research, design, fabrication and in-service experience relating to marine structures, i.e., all structures of steel, concrete, light alloy or composite construction having an interface with the sea, including ships, fixed and mobile offshore platforms, submarine and submersibles, pipelines, subsea systems for shallow and deep ocean operations and coastal structures such as piers.