Seismic response of monopile offshore wind turbines in liquefiable sand considering vertical ground motion

IF 4.2 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering Pub Date : 2024-11-28 DOI:10.1016/j.soildyn.2024.109117

Piguang Wang , Baoxin Wang , Xinglei Cheng , Mi Zhao , Xiuli Du

{"title":"Seismic response of monopile offshore wind turbines in liquefiable sand considering vertical ground motion","authors":"Piguang Wang , Baoxin Wang , Xinglei Cheng , Mi Zhao , Xiuli Du","doi":"10.1016/j.soildyn.2024.109117","DOIUrl":null,"url":null,"abstract":"<div><div>Offshore wind turbines experience environmental loads such as winds and waves throughout their operational lifespan, as well as accidental earthquakes in earthquake-prone regions. Earthquakes typically include high-frequency components in the vertical direction, which can be close to the natural frequency of offshore wind turbines. This study aims to assess the impact of the vertical seismic component on the dynamic response of monopile offshore wind turbines. A three-dimensional fully coupled finite element model is developed to realistically consider the dynamic interaction between the actual site and the structure. The method for simulating the interaction between water and soil is incorporated into the numerical model. Stochastic theory is utilized to simulate wind and wave. The model's accuracy is validated by comparing numerical predictions with centrifuge experimental results. The results of the parameters analysis indicate that the vertical seismic component significantly impacts the seismic response of offshore wind turbines and induces complex nonlinear behavior in sandy soil.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"189 ","pages":"Article 109117"},"PeriodicalIF":4.2000,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Soil Dynamics and Earthquake Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0267726124006699","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Offshore wind turbines experience environmental loads such as winds and waves throughout their operational lifespan, as well as accidental earthquakes in earthquake-prone regions. Earthquakes typically include high-frequency components in the vertical direction, which can be close to the natural frequency of offshore wind turbines. This study aims to assess the impact of the vertical seismic component on the dynamic response of monopile offshore wind turbines. A three-dimensional fully coupled finite element model is developed to realistically consider the dynamic interaction between the actual site and the structure. The method for simulating the interaction between water and soil is incorporated into the numerical model. Stochastic theory is utilized to simulate wind and wave. The model's accuracy is validated by comparing numerical predictions with centrifuge experimental results. The results of the parameters analysis indicate that the vertical seismic component significantly impacts the seismic response of offshore wind turbines and induces complex nonlinear behavior in sandy soil.

查看原文本刊更多论文

考虑垂直地面运动的可液化砂土中单桩海上风力发电机的地震响应

海上风力涡轮机在其整个使用寿命期间都会经历风和海浪等环境负荷，以及地震多发地区的意外地震。地震通常包括垂直方向的高频成分，这可能接近海上风力涡轮机的自然频率。本研究旨在评估竖向地震分量对单桩海上风力发电机动力响应的影响。建立了三维全耦合有限元模型，真实地考虑了实际场地与结构之间的动力相互作用。在数值模型中加入了模拟水土相互作用的方法。利用随机理论对风浪进行模拟。通过与离心机实验结果的比较，验证了模型的准确性。参数分析结果表明，竖向地震分量对海上风力发电机组的地震响应有显著影响，并在沙土中引起复杂的非线性行为。

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

Soil Dynamics and Earthquake Engineering 工程技术-地球科学综合

CiteScore

7.50

自引率

15.00%

发文量

446

审稿时长

8 months

期刊介绍： The journal aims to encourage and enhance the role of mechanics and other disciplines as they relate to earthquake engineering by providing opportunities for the publication of the work of applied mathematicians, engineers and other applied scientists involved in solving problems closely related to the field of earthquake engineering and geotechnical earthquake engineering. Emphasis is placed on new concepts and techniques, but case histories will also be published if they enhance the presentation and understanding of new technical concepts.