THESEUS Deliverable ID2.5: Part D - Overtopping resistant and over-washed dikes

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Resumé

Within the THESEUS project, the present work task, WT 2.3, focus on the safety of coastal dikes and especially their strength resilience against wave overtopping. Overtopping is an important parameter for the design crest level of sea dikes and levees. The overtopping discharge is for a given structure geometry determined by the water level (freeboard) and the wave characteristics, and dike strength, have large variability.
Surface erosion caused by overtopping can lead to failure and is thus an important failure mode. The important action parameters to consider are the flow velocities and flow depths. Semi-empirical formulae have been developed by Schüttrumpf (2001) and van Gent (2002) for estimation of these overtopping parameters for long-crested and perpendicular wave attack. Formulae for the cumulative erosion on the landward slope, based on overtopping flow velocities, have been presented by van der Meer et al. (2010)
To account specifically for the effects of wave obliquity and short-crestdness, small scale experiments in a wave tank have been performed at Aalborg University. The objective has been to determine overtopping flow velocities and flow depths on the seaward slope as well as on the dike crest and the landward slope in oblique long-crested and short-crested waves. The study presented in the following is further described in the papers by Nørgaard et al. (2011) and Lykke Andersen et al. (2011).
Results from the present study will be integrated with additional numerical computations in WT 2.3, and used for the design of proper mitigation options at the THESEUS sites in WT 5.1 and 5.3.
OriginalsprogEngelsk
TitelTHESEUS Deliverable ID2.5 : Report on Physical Tests on Innovative Coastal Structures, Final Version
red.Hans F. Burcharth, Thomas Lykke Andersen
Antal sider41
Forlag/udgivende institutionEuropean Commission
Udgivelsesdato2012
Sider227-267
PublikationsstatusUdgivet - 2012

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overtopping
dike
flow velocity
erosion
obliquity
water level
mitigation
safety
geometry
parameter

Emneord

  • THESEUS
  • Coastal Dikes
  • Wave Overtopping

Citer dette

Nørgaard, J. H., Andersen, T. L., Burcharth, H. F., & Steendam, G-J. (2012). THESEUS Deliverable ID2.5: Part D - Overtopping resistant and over-washed dikes. i H. F. Burcharth, & T. Lykke Andersen (red.), THESEUS Deliverable ID2.5: Report on Physical Tests on Innovative Coastal Structures, Final Version (s. 227-267). European Commission.
Nørgaard, Jørgen Harck ; Andersen, Thomas Lykke ; Burcharth, Hans F. ; Steendam, Gosse-Jan. / THESEUS Deliverable ID2.5 : Part D - Overtopping resistant and over-washed dikes. THESEUS Deliverable ID2.5: Report on Physical Tests on Innovative Coastal Structures, Final Version. red. / Hans F. Burcharth ; Thomas Lykke Andersen. European Commission, 2012. s. 227-267
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abstract = "Within the THESEUS project, the present work task, WT 2.3, focus on the safety of coastal dikes and especially their strength resilience against wave overtopping. Overtopping is an important parameter for the design crest level of sea dikes and levees. The overtopping discharge is for a given structure geometry determined by the water level (freeboard) and the wave characteristics, and dike strength, have large variability.Surface erosion caused by overtopping can lead to failure and is thus an important failure mode. The important action parameters to consider are the flow velocities and flow depths. Semi-empirical formulae have been developed by Sch{\"u}ttrumpf (2001) and van Gent (2002) for estimation of these overtopping parameters for long-crested and perpendicular wave attack. Formulae for the cumulative erosion on the landward slope, based on overtopping flow velocities, have been presented by van der Meer et al. (2010)To account specifically for the effects of wave obliquity and short-crestdness, small scale experiments in a wave tank have been performed at Aalborg University. The objective has been to determine overtopping flow velocities and flow depths on the seaward slope as well as on the dike crest and the landward slope in oblique long-crested and short-crested waves. The study presented in the following is further described in the papers by N{\o}rgaard et al. (2011) and Lykke Andersen et al. (2011).Results from the present study will be integrated with additional numerical computations in WT 2.3, and used for the design of proper mitigation options at the THESEUS sites in WT 5.1 and 5.3.",
keywords = "THESEUS, Coastal Dikes, Wave Overtopping, THESEUS, Coastal Dikes, Wave Overtopping",
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year = "2012",
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Nørgaard, JH, Andersen, TL, Burcharth, HF & Steendam, G-J 2012, THESEUS Deliverable ID2.5: Part D - Overtopping resistant and over-washed dikes. i HF Burcharth & T Lykke Andersen (red), THESEUS Deliverable ID2.5: Report on Physical Tests on Innovative Coastal Structures, Final Version. European Commission, s. 227-267.

THESEUS Deliverable ID2.5 : Part D - Overtopping resistant and over-washed dikes. / Nørgaard, Jørgen Harck; Andersen, Thomas Lykke; Burcharth, Hans F.; Steendam, Gosse-Jan.

THESEUS Deliverable ID2.5: Report on Physical Tests on Innovative Coastal Structures, Final Version. redaktører / Hans F. Burcharth; Thomas Lykke Andersen. European Commission, 2012. s. 227-267.

Eksport af forskningsdata: Bidrag til bog/antologi/rapport/konference proceedingBidrag til rapportForskning

TY - GEN

T1 - THESEUS Deliverable ID2.5

T2 - Part D - Overtopping resistant and over-washed dikes

AU - Nørgaard, Jørgen Harck

AU - Andersen, Thomas Lykke

AU - Burcharth, Hans F.

AU - Steendam, Gosse-Jan

PY - 2012

Y1 - 2012

N2 - Within the THESEUS project, the present work task, WT 2.3, focus on the safety of coastal dikes and especially their strength resilience against wave overtopping. Overtopping is an important parameter for the design crest level of sea dikes and levees. The overtopping discharge is for a given structure geometry determined by the water level (freeboard) and the wave characteristics, and dike strength, have large variability.Surface erosion caused by overtopping can lead to failure and is thus an important failure mode. The important action parameters to consider are the flow velocities and flow depths. Semi-empirical formulae have been developed by Schüttrumpf (2001) and van Gent (2002) for estimation of these overtopping parameters for long-crested and perpendicular wave attack. Formulae for the cumulative erosion on the landward slope, based on overtopping flow velocities, have been presented by van der Meer et al. (2010)To account specifically for the effects of wave obliquity and short-crestdness, small scale experiments in a wave tank have been performed at Aalborg University. The objective has been to determine overtopping flow velocities and flow depths on the seaward slope as well as on the dike crest and the landward slope in oblique long-crested and short-crested waves. The study presented in the following is further described in the papers by Nørgaard et al. (2011) and Lykke Andersen et al. (2011).Results from the present study will be integrated with additional numerical computations in WT 2.3, and used for the design of proper mitigation options at the THESEUS sites in WT 5.1 and 5.3.

AB - Within the THESEUS project, the present work task, WT 2.3, focus on the safety of coastal dikes and especially their strength resilience against wave overtopping. Overtopping is an important parameter for the design crest level of sea dikes and levees. The overtopping discharge is for a given structure geometry determined by the water level (freeboard) and the wave characteristics, and dike strength, have large variability.Surface erosion caused by overtopping can lead to failure and is thus an important failure mode. The important action parameters to consider are the flow velocities and flow depths. Semi-empirical formulae have been developed by Schüttrumpf (2001) and van Gent (2002) for estimation of these overtopping parameters for long-crested and perpendicular wave attack. Formulae for the cumulative erosion on the landward slope, based on overtopping flow velocities, have been presented by van der Meer et al. (2010)To account specifically for the effects of wave obliquity and short-crestdness, small scale experiments in a wave tank have been performed at Aalborg University. The objective has been to determine overtopping flow velocities and flow depths on the seaward slope as well as on the dike crest and the landward slope in oblique long-crested and short-crested waves. The study presented in the following is further described in the papers by Nørgaard et al. (2011) and Lykke Andersen et al. (2011).Results from the present study will be integrated with additional numerical computations in WT 2.3, and used for the design of proper mitigation options at the THESEUS sites in WT 5.1 and 5.3.

KW - THESEUS

KW - Coastal Dikes

KW - Wave Overtopping

KW - THESEUS

KW - Coastal Dikes

KW - Wave Overtopping

M3 - Report chapter

SP - 227

EP - 267

BT - THESEUS Deliverable ID2.5

A2 - Burcharth, Hans F.

A2 - Lykke Andersen, Thomas

PB - European Commission

ER -

Nørgaard JH, Andersen TL, Burcharth HF, Steendam G-J. THESEUS Deliverable ID2.5: Part D - Overtopping resistant and over-washed dikes. i Burcharth HF, Lykke Andersen T, Redaktører, THESEUS Deliverable ID2.5: Report on Physical Tests on Innovative Coastal Structures, Final Version. European Commission. 2012. s. 227-267