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Shake table testing and computational framework for seismic response of utility-scale bucket foundation offshore wind turbines.

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Title: Shake table testing and computational framework for seismic response of utility-scale bucket foundation offshore wind turbines.
Authors: Zayed, Muhammad1,2 (AUTHOR) muhammad.zayed@eng.asu.edu.eg, Kim, Kyungtae3 (AUTHOR) kyungtae.kim@dot.ca.gov, Prabhakaran, Athul4 (AUTHOR) aparayan@eng.ucsd.edu, Elgamal, Ahmed1,4 (AUTHOR) elgamal@ucsd.edu
Source: Soil Dynamics & Earthquake Engineering (0267-7261). Aug2023, Vol. 171, pN.PAG-N.PAG. 1p.
Subjects: Shaking table tests, Wind turbines, Offshore structures, Soil-structure interaction, Seismic response, Wind pressure, Pails, Soil dynamics
Abstract: Shake table testing was conducted to document the seismic response of a bucket foundation offshore wind turbine (OWT) system. Salient response of the system's soil-structure interaction effects is presented and discussed. Among the observed response characteristics, excess pore pressure fluctuation within and around the soil-bucket domain is thoroughly addressed, including the strong tendency for the soil dilation excursions driven by the induced cyclic strains. The experimental data is used to calibrate a numerical model with dynamic soil response simulated by a coupled solid-fluid formulation. The calibrated model is extended to investigate seismic response of a prototype utility-scale OWT, with and without added wind loading effects. Overall, the research outcomes indicate that: i) excess pore pressure fluctuations in the vicinity of the bucket play an important role in dictating the extent of potential permanent base rotation, ii) consideration should be given to wind loading that might further exacerbate this base rotation, and iii) it is of importance to model the turbine tower as a system of discrete masses rather than the simplified proposed for practice equivalent top mass idealization. • Shake table testing was conducted to document seismic response of bucket foundation offshore wind turbine (OWT) system. • The experimental data is used to calibrate a numerical model. • The calibrated model is extended to investigate seismic response of a prototype utility-scale OWT. • Excess pore pressure changes in the vicinity of the bucket play an important role in dictating the permanent base rotation. • Modeling the OWT as a system of discrete masses rather than the simplified single equivalent mass idealization is crucial. [ABSTRACT FROM AUTHOR]
Copyright of Soil Dynamics & Earthquake Engineering (0267-7261) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 163697652
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Shake table testing and computational framework for seismic response of utility-scale bucket foundation offshore wind turbines.
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  Data: <searchLink fieldCode="AR" term="%22Zayed%2C+Muhammad%22">Zayed, Muhammad</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> muhammad.zayed@eng.asu.edu.eg</i><br /><searchLink fieldCode="AR" term="%22Kim%2C+Kyungtae%22">Kim, Kyungtae</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> kyungtae.kim@dot.ca.gov</i><br /><searchLink fieldCode="AR" term="%22Prabhakaran%2C+Athul%22">Prabhakaran, Athul</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> aparayan@eng.ucsd.edu</i><br /><searchLink fieldCode="AR" term="%22Elgamal%2C+Ahmed%22">Elgamal, Ahmed</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<i> elgamal@ucsd.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Soil+Dynamics+%26+Earthquake+Engineering+%280267-7261%29%22">Soil Dynamics & Earthquake Engineering (0267-7261)</searchLink>. Aug2023, Vol. 171, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Shaking+table+tests%22">Shaking table tests</searchLink><br /><searchLink fieldCode="DE" term="%22Wind+turbines%22">Wind turbines</searchLink><br /><searchLink fieldCode="DE" term="%22Offshore+structures%22">Offshore structures</searchLink><br /><searchLink fieldCode="DE" term="%22Soil-structure+interaction%22">Soil-structure interaction</searchLink><br /><searchLink fieldCode="DE" term="%22Seismic+response%22">Seismic response</searchLink><br /><searchLink fieldCode="DE" term="%22Wind+pressure%22">Wind pressure</searchLink><br /><searchLink fieldCode="DE" term="%22Pails%22">Pails</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+dynamics%22">Soil dynamics</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Shake table testing was conducted to document the seismic response of a bucket foundation offshore wind turbine (OWT) system. Salient response of the system's soil-structure interaction effects is presented and discussed. Among the observed response characteristics, excess pore pressure fluctuation within and around the soil-bucket domain is thoroughly addressed, including the strong tendency for the soil dilation excursions driven by the induced cyclic strains. The experimental data is used to calibrate a numerical model with dynamic soil response simulated by a coupled solid-fluid formulation. The calibrated model is extended to investigate seismic response of a prototype utility-scale OWT, with and without added wind loading effects. Overall, the research outcomes indicate that: i) excess pore pressure fluctuations in the vicinity of the bucket play an important role in dictating the extent of potential permanent base rotation, ii) consideration should be given to wind loading that might further exacerbate this base rotation, and iii) it is of importance to model the turbine tower as a system of discrete masses rather than the simplified proposed for practice equivalent top mass idealization. • Shake table testing was conducted to document seismic response of bucket foundation offshore wind turbine (OWT) system. • The experimental data is used to calibrate a numerical model. • The calibrated model is extended to investigate seismic response of a prototype utility-scale OWT. • Excess pore pressure changes in the vicinity of the bucket play an important role in dictating the permanent base rotation. • Modeling the OWT as a system of discrete masses rather than the simplified single equivalent mass idealization is crucial. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Soil Dynamics & Earthquake Engineering (0267-7261) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.soildyn.2023.107939
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Shaking table tests
        Type: general
      – SubjectFull: Wind turbines
        Type: general
      – SubjectFull: Offshore structures
        Type: general
      – SubjectFull: Soil-structure interaction
        Type: general
      – SubjectFull: Seismic response
        Type: general
      – SubjectFull: Wind pressure
        Type: general
      – SubjectFull: Pails
        Type: general
      – SubjectFull: Soil dynamics
        Type: general
    Titles:
      – TitleFull: Shake table testing and computational framework for seismic response of utility-scale bucket foundation offshore wind turbines.
        Type: main
  BibRelationships:
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      – PersonEntity:
          Name:
            NameFull: Zayed, Muhammad
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            NameFull: Kim, Kyungtae
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            NameFull: Prabhakaran, Athul
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            NameFull: Elgamal, Ahmed
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          Dates:
            – D: 01
              M: 08
              Text: Aug2023
              Type: published
              Y: 2023
          Identifiers:
            – Type: issn-print
              Value: 02677261
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            – Type: volume
              Value: 171
          Titles:
            – TitleFull: Soil Dynamics & Earthquake Engineering (0267-7261)
              Type: main
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