Evaluating scale effects and bearing portions in centrifuge modeling of helical anchors: sand.
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| Title: | Evaluating scale effects and bearing portions in centrifuge modeling of helical anchors: sand. |
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| Authors: | Heshmati Rafsanjani, Ali Akbar1 (AUTHOR) heshmati@iust.ac.ir, Salehzadeh, Hossein1 (AUTHOR), Nuri, Hamed1 (AUTHOR) |
| Source: | Acta Geotechnica. Sep2021, Vol. 16 Issue 9, p2917-2932. 16p. |
| Subjects: | Anchors, Centrifuges, Bearings (Machinery), Sand, Wind turbines, Grain size |
| Abstract: | Helical anchors are bearing elements that can resist uplift loads by a combination of shaft and helical plate bearing. The application of helical piles as offshore wind turbine foundations has recently become interesting. However, large size of such structures limits the possible physical modeling in a geotechnical centrifuge. In the current study, the limits of physical modeling concerning particle size effect on the uplift capacity of helical piles were evaluated. The modeling of models technique was employed. The contribution of the shaft and helical plate to the anchor uplift capacity was also studied. The results indicate that small ratios of helical plate diameter to shaft diameter lead to higher contribution of the shaft to the total anchor capacity. It was also found that scale effects could be safely ignored if effective helical radius to the mean grain size of the sand is greater than 16. The normalized mobilization distance and dimensionless breakout factor were in good agreement with the previous researches. The limits reported here could contribute to a more reliable physical modeling of helical piles and anchors in the future researches. [ABSTRACT FROM AUTHOR] |
| Copyright of Acta Geotechnica is the property of Springer Nature 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: 152057504 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Evaluating scale effects and bearing portions in centrifuge modeling of helical anchors: sand. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Heshmati+Rafsanjani%2C+Ali+Akbar%22">Heshmati Rafsanjani, Ali Akbar</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> heshmati@iust.ac.ir</i><br /><searchLink fieldCode="AR" term="%22Salehzadeh%2C+Hossein%22">Salehzadeh, Hossein</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nuri%2C+Hamed%22">Nuri, Hamed</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Acta+Geotechnica%22">Acta Geotechnica</searchLink>. Sep2021, Vol. 16 Issue 9, p2917-2932. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Anchors%22">Anchors</searchLink><br /><searchLink fieldCode="DE" term="%22Centrifuges%22">Centrifuges</searchLink><br /><searchLink fieldCode="DE" term="%22Bearings+%28Machinery%29%22">Bearings (Machinery)</searchLink><br /><searchLink fieldCode="DE" term="%22Sand%22">Sand</searchLink><br /><searchLink fieldCode="DE" term="%22Wind+turbines%22">Wind turbines</searchLink><br /><searchLink fieldCode="DE" term="%22Grain+size%22">Grain size</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Helical anchors are bearing elements that can resist uplift loads by a combination of shaft and helical plate bearing. The application of helical piles as offshore wind turbine foundations has recently become interesting. However, large size of such structures limits the possible physical modeling in a geotechnical centrifuge. In the current study, the limits of physical modeling concerning particle size effect on the uplift capacity of helical piles were evaluated. The modeling of models technique was employed. The contribution of the shaft and helical plate to the anchor uplift capacity was also studied. The results indicate that small ratios of helical plate diameter to shaft diameter lead to higher contribution of the shaft to the total anchor capacity. It was also found that scale effects could be safely ignored if effective helical radius to the mean grain size of the sand is greater than 16. The normalized mobilization distance and dimensionless breakout factor were in good agreement with the previous researches. The limits reported here could contribute to a more reliable physical modeling of helical piles and anchors in the future researches. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Acta Geotechnica is the property of Springer Nature 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: 10.1007/s11440-021-01156-2 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 2917 Subjects: – SubjectFull: Anchors Type: general – SubjectFull: Centrifuges Type: general – SubjectFull: Bearings (Machinery) Type: general – SubjectFull: Sand Type: general – SubjectFull: Wind turbines Type: general – SubjectFull: Grain size Type: general Titles: – TitleFull: Evaluating scale effects and bearing portions in centrifuge modeling of helical anchors: sand. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Heshmati Rafsanjani, Ali Akbar – PersonEntity: Name: NameFull: Salehzadeh, Hossein – PersonEntity: Name: NameFull: Nuri, Hamed IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 18611125 Numbering: – Type: volume Value: 16 – Type: issue Value: 9 Titles: – TitleFull: Acta Geotechnica Type: main |
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