Journal ArticleDOI
Wave pressures and uplift forces on and scour around submarine pipeline in clayey soil
TLDR
In this article, the authors investigated wave-induced pressures and uplift forces on a submarine pipeline (exposed, half buried and fully buried) in clayey soil of different consistency index both in regular and random waves.About:
This article is published in Ocean Engineering.The article was published on 2003-02-01. It has received 25 citations till now. The article focuses on the topics: Submarine pipeline & Pore water pressure.read more
Citations
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Journal ArticleDOI
The role of scour in shipwreck site formation processes and the preservation of wreck-associated scour signatures in the sedimentary record – evidence from seabed and sub-surface data
TL;DR: The morphology of resultant scour signatures are controlled by the orientation of the wreck structure in relation to the prevailing hydrodynamic regime, the morphology and size of the ship and individual site components, the hydrodynamical regime (currents, waves or combined waves and currents), bathymetry and the geology of the site (seafloor and sub-surface conditions) as mentioned in this paper.
Journal ArticleDOI
Pipeline–Seabed Interaction
TL;DR: A review of the existing research on the interaction between a pipeline and an erodible bed exposed to waves and/or currents is presented in this paper, where the basic mechanism that leads to scour in two-dimensional and three-dimensional (3D) cases is first described, as deduced from small-scale laboratory experiments.
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Bedform evolution around a submarine pipeline and its effects on wave-induced forces under regular waves
TL;DR: In this article, an experimental investigation of seabed evolution behavior around a submarine pipeline and the hydrodynamic forces on the pipeline under regular waves was presented. And the influence of bedform evolution on wave forces was found to vary significantly in different regimes.
Journal ArticleDOI
The impact of scour processes on a smothered reef system in the Irish Sea
TL;DR: In this paper, acoustic, seismic, grab sampling and video ground-truthing methods were used for benthic habitat discrimination in the Pisces Reef system, and it was demonstrated that scouring may influence community composition through disturbance mechanisms.
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Scour depth under pipelines placed on weakly cohesive soils
TL;DR: In this article, the authors study the scouring process of a submarine pipeline placed on a weakly cohesive seabed and find that the scour depth depends directly on the hydrodynamic forces acting on the cylinder and the clay content of the soil.
References
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Journal ArticleDOI
Erosion of mud/sand mixtures
Helen Mitchener,Hilde Torfs +1 more
TL;DR: In this article, the authors investigated the relationship between the erosional properties of combined mud and sand sediments, and found that adding sand to mud, or vice versa, increases the erosion resistance and reduces the erosion rates when the critical shear stress for erosion is exceeded.
Journal ArticleDOI
Scour Below Pipelines in Waves
B. Mutiu Sumer,Jørgen Fredsøe +1 more
TL;DR: The effect of leewake of the pipe is the key element in the scour process, and it is demoed in this article, where the results of an experimental investigation on scour below pipelines exposed to waves.
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Cohesive Material Erosion by Unidirectional Current
TL;DR: In this paper, the initiation of motion of consolidated cohesive sediments under a unidirectional flow of clear water was studied in a flume-tunnel capable of providing a bed shear stress up to 26 Pa and a velocity of 3.5 m/s, 3 mm above the bed.
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Seepage force on a pipeline buried in a poroelastic seabed under wave loadings
TL;DR: The water wave induced seepage force on a pipeline buried in the seabed is investigated in this paper, where the pipeline is assumed to be rigid and not supported by any anchoring force.
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Wave-induced uplift force on a submarine pipeline buried in a compressible seabed
TL;DR: In this paper, a finite element simulation of the wave-induced hydrodynamic uplift force acting on a submarine pipeline buried in sandy seabed sediments subject to continuous loading of sinusoidal surface waves is presented.