Wave Scour Around Piles

Carreiras, José Luis Albuquerque; Larroudé, Philippe; Seabra-Santos, Fernando J.; Mory, Mathieu

doi:10.1061/40549(276)145

Cited by 10 publications

(18 citation statements)

References 1 publication

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“…(ii) The additional settlement is virtually constant for the surface-piercing piles and has a value significantly close to the expected scour depth predicted by the scaling relationship between the depth of local scour and the Keulegan-Carpenter number (Carreiras et al, 2000). (iii) For shorter cylinders, the values obtained are lower, but even in these cases, the settlement does not increase significantly with pressure and is of the same order of magnitude as the scour depth found for fixed piles.…”

Section: Discussionsupporting

confidence: 63%

“…According to Carreiras et al (2000), the KC number may equally be defined as a function of the stroke of the horizontal excursion, 2â, relative to the diameter of the cylinder, D…”

Section: Introductionmentioning

confidence: 99%

“…Experiments conducted by Carreiras et al (2000) on the local scour produced by regular, nonlinear waves around a single pile have shown that in live bed conditions, a good fit is obtained for the equilibrium scour depth, S, and the KC number defined by Eq. (1).…”

Section: Introductionmentioning

confidence: 99%

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Settlement of vertical piles exposed to waves

Carreiras

Carmo

Seabra-Santos

2003

Coastal Engineering

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In recent years, several authors have conducted experimental studies on the scour around piles fixed in the wave flume. In addition, the settlement of structures has been studied for the case of pipelines, due either to steady currents [International Journal of Offshore and Polar Engineering 4 (1) (1994) 30] or to wave forcing [Coastal Engineering 42 (2001) 313]. However, the settlement of a pile due to scour in waves has so far not been investigated.This paper reports an experimental study on the settlement of vertical cylindrical piles, either surface-piercing or entirely submerged, exposed to waves.The primary objective of the study was to investigate: (i) the scour-settlement process with piles of differing heights and densities with their bases initially lying on the seabed and (ii) the influence of the piles height and weight on the hydrodynamics vertical settlement.A series of experiments was carried out using isolated vertical cylinders of a given diameter (30 mm), different materials (PVC, aluminium, brass, copper and bronze) and different heights (30, 6 and 3 cm). The characteristics of the waves remained constant in all tests (water height = 15 cm, wave period = 2.1 s, local wave height = 4.0 cm, Keulegan -Carpenter number = 12).The cylinders were set up over a sand bed, so that they could move vertically. Both the initial settlement of each cylinder (when it occurs), due to its weight, and the evolution of additional settlement caused by flow-induced scour were measured. The tests were conducted over a period of 4000 wave cycles. D

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Section: Discussionsupporting

confidence: 63%

“…According to Carreiras et al (2000), the KC number may equally be defined as a function of the stroke of the horizontal excursion, 2â, relative to the diameter of the cylinder, D…”

Section: Introductionmentioning

confidence: 99%

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Settlement of vertical piles exposed to waves

Carreiras

Carmo

Seabra-Santos

2003

Coastal Engineering

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“…From the video recording, occasional wave breaking on the pile is observed. This is worth noting since wave breaking appears to enlarge equilibrium scour holes due to the increased turbulence level according to Carreiras et al [2000]. From the video recordings, the concentration of suspended grains appears to increase during the passage of large or breaking waves.…”

Section: Wave Conditionsmentioning

confidence: 90%

Experimental Study of the Development of Scour and Backfilling

Hartvig

Thomsen

Frigaard

et al. 2010

Coastal Engineering Journal

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This paper deals with the development of scour holes in time and space around individual offshore monopiles. It is based on physical flume tests of a model-scale pile subjected to current and/or irregular water waves. The main focus is on backfilling, i.e. the wave-induced or current-wave-induced deposition of sediment into holes that have been previously scoured. The development of the scour depth, scour volume and a so-called scour shape factor is quantified which may be useful to understand and benchmark the development of scour holes.

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“…However, studies of bridge scour at piers or piles under currents were largely reported in the literature as compared to those under waves. The scour at piers under waves was extensively studied by Sumer [4], Kobayashi, and Oda [5], Whitehouse [6], Carreiras et al [7,8], Sumer et al [9][10][11], Sumer and Fredsøe [12], Dey et al [13,14], Arabi et al [15], and many others.…”

Section: Introductionmentioning

confidence: 99%

Scour around Piers under Waves: Current Status of Research and Its Future Prospect

Gazi

Afzal

Dey

2019

Water

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In this review article, the current status of research on pier scour under waves is presented. This includes a summary of different bridge failure events due to scour, scour mechanism, scour depth predictors under waves, influence of pier shape on scour depth formation, shape of scour hole around piers, and many others. Further, this article describes the scour process, development of scour depth predictors, and the complexity involved in the scour related calculations. Finally, the future scope of research is delineated.

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Wave Scour Around Piles

Cited by 10 publications

References 1 publication

Settlement of vertical piles exposed to waves

Settlement of vertical piles exposed to waves

Experimental Study of the Development of Scour and Backfilling

Scour around Piers under Waves: Current Status of Research and Its Future Prospect

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