Experimental study on the scour around a monopile in breaking waves

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Experimental study on the scour around a monopile in breaking waves. / Nielsen, Anders Wedel; Sumer, B. Mutlu; Ebbe, Sebastian Schjelde; Fredsøe, Jørgen.

In: Journal of Waterway, Port, Coastal, and Ocean Engineering, Vol. 138, No. November/december, 2012, p. 501-506.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Author

Nielsen, Anders Wedel; Sumer, B. Mutlu; Ebbe, Sebastian Schjelde; Fredsøe, Jørgen / Experimental study on the scour around a monopile in breaking waves.

In: Journal of Waterway, Port, Coastal, and Ocean Engineering, Vol. 138, No. November/december, 2012, p. 501-506.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{fc2f50364a734c8b905e10cadd3f9c2d,
title = "Experimental study on the scour around a monopile in breaking waves",
keywords = "Scour, Pile foundation, Breaking waves, Wind power, Bars",
publisher = "American Society of Civil Engineers",
author = "Nielsen, {Anders Wedel} and Sumer, {B. Mutlu} and Ebbe, {Sebastian Schjelde} and Jørgen Fredsøe",
year = "2012",
doi = "10.1061/(ASCE)WW.1943-5460.0000148",
volume = "138",
number = "November/december",
pages = "501--506",
journal = "Journal of Waterway, Port, Coastal, and Ocean Engineering",
issn = "0733-950X",

}

RIS

TY - JOUR

T1 - Experimental study on the scour around a monopile in breaking waves

A1 - Nielsen,Anders Wedel

A1 - Sumer,B. Mutlu

A1 - Ebbe,Sebastian Schjelde

A1 - Fredsøe,Jørgen

AU - Nielsen,Anders Wedel

AU - Sumer,B. Mutlu

AU - Ebbe,Sebastian Schjelde

AU - Fredsøe,Jørgen

PB - American Society of Civil Engineers

PY - 2012

Y1 - 2012

N2 - The scour process around monopiles caused by breaking waves is studied experimentally using regular waves. The use of regular waves is conservative, which made it possible to avoid scour phenomena caused by nonbreaking waves such as scour generation and backfilling. The waves were breaking on a flat sand section after shoaling on a mildly sloping ramp. Various monopiles were exposed to plunging breakers that were breaking at various distances from the pile. It was found that the scour was caused by turbulence generated by the breaking and was diverted toward the bottom by the pile. The maximum scour depth found was approximately 0:60D. This was smaller than the scour observed around piles exposed to current; however, in some cases it was an order of magnitude larger than the scour caused by nonbreaking waves. This is apparently especially true for larger piles.

AB - The scour process around monopiles caused by breaking waves is studied experimentally using regular waves. The use of regular waves is conservative, which made it possible to avoid scour phenomena caused by nonbreaking waves such as scour generation and backfilling. The waves were breaking on a flat sand section after shoaling on a mildly sloping ramp. Various monopiles were exposed to plunging breakers that were breaking at various distances from the pile. It was found that the scour was caused by turbulence generated by the breaking and was diverted toward the bottom by the pile. The maximum scour depth found was approximately 0:60D. This was smaller than the scour observed around piles exposed to current; however, in some cases it was an order of magnitude larger than the scour caused by nonbreaking waves. This is apparently especially true for larger piles.

KW - Scour

KW - Pile foundation

KW - Breaking waves

KW - Wind power

KW - Bars

U2 - 10.1061/(ASCE)WW.1943-5460.0000148

DO - 10.1061/(ASCE)WW.1943-5460.0000148

JO - Journal of Waterway, Port, Coastal, and Ocean Engineering

JF - Journal of Waterway, Port, Coastal, and Ocean Engineering

SN - 0733-950X

IS - November/december

VL - 138

SP - 501

EP - 506

ER -