Stability of single-graded scour protection around a monopile in current

T. U. Petersen, A. W. Nielsen, D. A. Hansen, A. V. Pedersen, E. D. Christensen, Jørgen Fredsøe

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

The stability of single-graded scour protections in steady current depends on similar dynamic responses as for two-layer solutions (Stability of armour stones, winnowing failure, edge scour), and have been studied in an experimental campaign comprising steady current in a wave/current flume. The results of the experimental campaign to explain the stability of single-graded scour protections in steady current is presented. The governing process in currents is the armouring of the top layers of the stone layer as the fines are washed out by winnowing. Over time the single-graded stone material makes a transition to a two layer configuration consisting of a protective armour layer and a underlying filter layer. The interface be-tween these two layers, termed the erosion level, is presented in design diagrams based the mobility parame-ter, gradation of the stone material and cover stone size.
Original languageEnglish
Title of host publicationScour and Erosion IX: Proceedings of the 9th International Conference on Scour and Erosion (ICSE 2018)
EditorsYeh Keh-Chia
Place of PublicationLondon
PublisherCRC Press
Publication date2019
Edition1st
Pages175-181
ISBN (Print)9780367074678
ISBN (Electronic)9780429020940
Publication statusPublished - 2019
Event9th International Conference on Scour and Erosion (ICSE 2018) - Taipei, Taiwan, Province of China
Duration: 5 Nov 20188 Nov 2018

Conference

Conference9th International Conference on Scour and Erosion (ICSE 2018)
CountryTaiwan, Province of China
CityTaipei
Period05/11/201808/11/2018

Cite this

Petersen, T. U., Nielsen, A. W., Hansen, D. A., Pedersen, A. V., Christensen, E. D., & Fredsøe, J. (2019). Stability of single-graded scour protection around a monopile in current. In Y. Keh-Chia (Ed.), Scour and Erosion IX: Proceedings of the 9th International Conference on Scour and Erosion (ICSE 2018) (1st ed., pp. 175-181). London: CRC Press.
Petersen, T. U. ; Nielsen, A. W. ; Hansen, D. A. ; Pedersen, A. V. ; Christensen, E. D. ; Fredsøe, Jørgen. / Stability of single-graded scour protection around a monopile in current. Scour and Erosion IX: Proceedings of the 9th International Conference on Scour and Erosion (ICSE 2018). editor / Yeh Keh-Chia. 1st. ed. London : CRC Press, 2019. pp. 175-181
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title = "Stability of single-graded scour protection around a monopile in current",
abstract = "The stability of single-graded scour protections in steady current depends on similar dynamic responses as for two-layer solutions (Stability of armour stones, winnowing failure, edge scour), and have been studied in an experimental campaign comprising steady current in a wave/current flume. The results of the experimental campaign to explain the stability of single-graded scour protections in steady current is presented. The governing process in currents is the armouring of the top layers of the stone layer as the fines are washed out by winnowing. Over time the single-graded stone material makes a transition to a two layer configuration consisting of a protective armour layer and a underlying filter layer. The interface be-tween these two layers, termed the erosion level, is presented in design diagrams based the mobility parame-ter, gradation of the stone material and cover stone size.",
author = "Petersen, {T. U.} and Nielsen, {A. W.} and Hansen, {D. A.} and Pedersen, {A. V.} and Christensen, {E. D.} and J{\o}rgen Freds{\o}e",
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language = "English",
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Petersen, TU, Nielsen, AW, Hansen, DA, Pedersen, AV, Christensen, ED & Fredsøe, J 2019, Stability of single-graded scour protection around a monopile in current. in Y Keh-Chia (ed.), Scour and Erosion IX: Proceedings of the 9th International Conference on Scour and Erosion (ICSE 2018). 1st edn, CRC Press, London, pp. 175-181, 9th International Conference on Scour and Erosion (ICSE 2018), Taipei, Taiwan, Province of China, 05/11/2018.

Stability of single-graded scour protection around a monopile in current. / Petersen, T. U. ; Nielsen, A. W.; Hansen, D. A. ; Pedersen, A. V. ; Christensen, E. D. ; Fredsøe, Jørgen.

Scour and Erosion IX: Proceedings of the 9th International Conference on Scour and Erosion (ICSE 2018). ed. / Yeh Keh-Chia. 1st. ed. London : CRC Press, 2019. p. 175-181.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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AB - The stability of single-graded scour protections in steady current depends on similar dynamic responses as for two-layer solutions (Stability of armour stones, winnowing failure, edge scour), and have been studied in an experimental campaign comprising steady current in a wave/current flume. The results of the experimental campaign to explain the stability of single-graded scour protections in steady current is presented. The governing process in currents is the armouring of the top layers of the stone layer as the fines are washed out by winnowing. Over time the single-graded stone material makes a transition to a two layer configuration consisting of a protective armour layer and a underlying filter layer. The interface be-tween these two layers, termed the erosion level, is presented in design diagrams based the mobility parame-ter, gradation of the stone material and cover stone size.

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BT - Scour and Erosion IX: Proceedings of the 9th International Conference on Scour and Erosion (ICSE 2018)

A2 - Keh-Chia, Yeh

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Petersen TU, Nielsen AW, Hansen DA, Pedersen AV, Christensen ED, Fredsøe J. Stability of single-graded scour protection around a monopile in current. In Keh-Chia Y, editor, Scour and Erosion IX: Proceedings of the 9th International Conference on Scour and Erosion (ICSE 2018). 1st ed. London: CRC Press. 2019. p. 175-181