Liquefaction characteristics of offshore wind turbine with hybrid monopile foundation via centrifuge modelling

Xuefei Wang, Xiangwu Zeng, Xinyao Li, J. Li

Research output: Contribution to journalArticle

Abstract

Some offshore wind farms are built in seismically active areas. The offshore wind turbine (OWTs) are high-rise structures and sensitive to lateral failures during the earthquake. In this study, an innovative hybrid monopile foundation is proposed for OWTs. A series of centrifuge shake table tests is conducted to investigate the seismic response and liquefaction characteristics of the hybrid monopile foundation. Mechanisms of the seismic behavior of soil, lateral displacements of the wind turbine, and structural settlements are evaluated. Centrifuge test results indicate that the liquefaction around the hybrid monopile foundation is weakened compared to the traditional single pile. The soil partially keeps its strength and stiffness during the shaking due to the higher confining stress. The lateral stability of the system is enhanced. OWTs with the hybrid monopile foundation tends to settle more during the earthquake due to the soil-structure interaction and the static bearing induced soil shearing. Two types of hybrid monopile foundations are constructed with different weights and materials, which are predominant influence factors for their seismic response. This study aims to investigate the seismic behavior of the hybrid monopile foundation for OWTs during earthquake events and provide references for practical designs.

Original languageEnglish (US)
Pages (from-to)2358-2372
Number of pages15
JournalRenewable Energy
Volume145
DOIs
StatePublished - Jan 2020
Externally publishedYes

Fingerprint

Offshore wind turbines
Centrifuges
Liquefaction
Earthquakes
Seismic response
Soils
Bearings (structural)
Offshore wind farms
Soil structure interactions
Shearing
Wind turbines
Piles
Stiffness

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment

Cite this

@article{ca6d4b8f445144dcbbc2b31a6e484989,
title = "Liquefaction characteristics of offshore wind turbine with hybrid monopile foundation via centrifuge modelling",
abstract = "Some offshore wind farms are built in seismically active areas. The offshore wind turbine (OWTs) are high-rise structures and sensitive to lateral failures during the earthquake. In this study, an innovative hybrid monopile foundation is proposed for OWTs. A series of centrifuge shake table tests is conducted to investigate the seismic response and liquefaction characteristics of the hybrid monopile foundation. Mechanisms of the seismic behavior of soil, lateral displacements of the wind turbine, and structural settlements are evaluated. Centrifuge test results indicate that the liquefaction around the hybrid monopile foundation is weakened compared to the traditional single pile. The soil partially keeps its strength and stiffness during the shaking due to the higher confining stress. The lateral stability of the system is enhanced. OWTs with the hybrid monopile foundation tends to settle more during the earthquake due to the soil-structure interaction and the static bearing induced soil shearing. Two types of hybrid monopile foundations are constructed with different weights and materials, which are predominant influence factors for their seismic response. This study aims to investigate the seismic behavior of the hybrid monopile foundation for OWTs during earthquake events and provide references for practical designs.",
author = "Xuefei Wang and Xiangwu Zeng and Xinyao Li and J. Li",
year = "2020",
month = "1",
doi = "https://doi.org/10.1016/j.renene.2019.07.106",
language = "English (US)",
volume = "145",
pages = "2358--2372",
journal = "Renewable Energy",
issn = "0960-1481",
publisher = "Elsevier BV",

}

Liquefaction characteristics of offshore wind turbine with hybrid monopile foundation via centrifuge modelling. / Wang, Xuefei; Zeng, Xiangwu; Li, Xinyao; Li, J.

In: Renewable Energy, Vol. 145, 01.2020, p. 2358-2372.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Liquefaction characteristics of offshore wind turbine with hybrid monopile foundation via centrifuge modelling

AU - Wang, Xuefei

AU - Zeng, Xiangwu

AU - Li, Xinyao

AU - Li, J.

PY - 2020/1

Y1 - 2020/1

N2 - Some offshore wind farms are built in seismically active areas. The offshore wind turbine (OWTs) are high-rise structures and sensitive to lateral failures during the earthquake. In this study, an innovative hybrid monopile foundation is proposed for OWTs. A series of centrifuge shake table tests is conducted to investigate the seismic response and liquefaction characteristics of the hybrid monopile foundation. Mechanisms of the seismic behavior of soil, lateral displacements of the wind turbine, and structural settlements are evaluated. Centrifuge test results indicate that the liquefaction around the hybrid monopile foundation is weakened compared to the traditional single pile. The soil partially keeps its strength and stiffness during the shaking due to the higher confining stress. The lateral stability of the system is enhanced. OWTs with the hybrid monopile foundation tends to settle more during the earthquake due to the soil-structure interaction and the static bearing induced soil shearing. Two types of hybrid monopile foundations are constructed with different weights and materials, which are predominant influence factors for their seismic response. This study aims to investigate the seismic behavior of the hybrid monopile foundation for OWTs during earthquake events and provide references for practical designs.

AB - Some offshore wind farms are built in seismically active areas. The offshore wind turbine (OWTs) are high-rise structures and sensitive to lateral failures during the earthquake. In this study, an innovative hybrid monopile foundation is proposed for OWTs. A series of centrifuge shake table tests is conducted to investigate the seismic response and liquefaction characteristics of the hybrid monopile foundation. Mechanisms of the seismic behavior of soil, lateral displacements of the wind turbine, and structural settlements are evaluated. Centrifuge test results indicate that the liquefaction around the hybrid monopile foundation is weakened compared to the traditional single pile. The soil partially keeps its strength and stiffness during the shaking due to the higher confining stress. The lateral stability of the system is enhanced. OWTs with the hybrid monopile foundation tends to settle more during the earthquake due to the soil-structure interaction and the static bearing induced soil shearing. Two types of hybrid monopile foundations are constructed with different weights and materials, which are predominant influence factors for their seismic response. This study aims to investigate the seismic behavior of the hybrid monopile foundation for OWTs during earthquake events and provide references for practical designs.

UR - http://www.scopus.com/inward/record.url?scp=85070215597&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85070215597&partnerID=8YFLogxK

U2 - https://doi.org/10.1016/j.renene.2019.07.106

DO - https://doi.org/10.1016/j.renene.2019.07.106

M3 - Article

VL - 145

SP - 2358

EP - 2372

JO - Renewable Energy

JF - Renewable Energy

SN - 0960-1481

ER -