Stability of submerged rock berms exposed to motion of liquefied soil in waves

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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Stability of submerged rock berms exposed to motion of liquefied soil in waves. / Sumer, B. Mutlu; Dixen, Figen Hatipoglu; Fredsøe, Jørgen.

In: Ocean Engineering, Vol. 38, No. 7, 2011, p. 849-859.

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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Author

Sumer, B. Mutlu; Dixen, Figen Hatipoglu; Fredsøe, Jørgen / Stability of submerged rock berms exposed to motion of liquefied soil in waves.

In: Ocean Engineering, Vol. 38, No. 7, 2011, p. 849-859.

Publication: Research - peer-reviewJournal article – Annual report year: 2011

Bibtex

@article{dad8cdbaf5aa45d5bae6591350fa4214,
title = "Stability of submerged rock berms exposed to motion of liquefied soil in waves",
publisher = "Pergamon",
author = "Sumer, {B. Mutlu} and Dixen, {Figen Hatipoglu} and Jørgen Fredsøe",
year = "2011",
doi = "10.1016/j.oceaneng.2010.09.009",
volume = "38",
number = "7",
pages = "849--859",
journal = "Ocean Engineering",
issn = "0029-8018",

}

RIS

TY - JOUR

T1 - Stability of submerged rock berms exposed to motion of liquefied soil in waves

A1 - Sumer,B. Mutlu

A1 - Dixen,Figen Hatipoglu

A1 - Fredsøe,Jørgen

AU - Sumer,B. Mutlu

AU - Dixen,Figen Hatipoglu

AU - Fredsøe,Jørgen

PB - Pergamon

PY - 2011

Y1 - 2011

N2 - The paper describes the results of an experimental study on the behaviour of a submerged rock berm in liquefied backfill soil. The soil is liquefied by waves, and the rock berm is subject to the orbital motion of the liquefied soil. The soil used in the experiments was silt with d50=0.075mm. Various berm materials were used, stones of size 0.74–2.5cm, plastic balls of size 3.6cm, brass of size 2.5cm and steel of size 1.0cm. The experiments show that rock berms that are stable under very large waves can be unstable when they are exposed to the motion of liquefied soil. The limited data obtained in the study were plotted as a function of the mobility number versus the Keulegan–Carpenter number for the range of the Reynolds number of the tests. The critical mobility number corresponding to the incipient motion of the berm stones is determined. Recommendations are made as to how the present findings can be implemented in practice.

AB - The paper describes the results of an experimental study on the behaviour of a submerged rock berm in liquefied backfill soil. The soil is liquefied by waves, and the rock berm is subject to the orbital motion of the liquefied soil. The soil used in the experiments was silt with d50=0.075mm. Various berm materials were used, stones of size 0.74–2.5cm, plastic balls of size 3.6cm, brass of size 2.5cm and steel of size 1.0cm. The experiments show that rock berms that are stable under very large waves can be unstable when they are exposed to the motion of liquefied soil. The limited data obtained in the study were plotted as a function of the mobility number versus the Keulegan–Carpenter number for the range of the Reynolds number of the tests. The critical mobility number corresponding to the incipient motion of the berm stones is determined. Recommendations are made as to how the present findings can be implemented in practice.

KW - Pore-pressure buildup

KW - Cover stones

KW - Marine sediment

KW - Liquefaction

KW - Stone protection

KW - Silt

KW - Waves

KW - Pipeline protection

KW - Pipelines

KW - Counter measures

U2 - 10.1016/j.oceaneng.2010.09.009

DO - 10.1016/j.oceaneng.2010.09.009

JO - Ocean Engineering

JF - Ocean Engineering

SN - 0029-8018

IS - 7

VL - 38

SP - 849

EP - 859

ER -