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Het doel van het onderzoek is om meer inzicht te verkrijgen in de dominante fysische processen die een rol spelen bij het dynamische gedrag van waterbouwkundige constructies. Hiertoe wordt fysiek modelonderzoek via metingen in fysieke laboratoriumfaciliteiten uitgevoerd en worden numerieke technieken toegepast. Op basis van laboratoriumonderzoek en inzet van het numerieke model OpenFoam wordt de analyse uitgevoerd die zal leiden tot het benodigde inzicht. Deze zal vervolgens binnen de planperiode toegankelijk worden gemaakt via publicatie van de resultaten.
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- De Vries & van de Wiel
- Stichting Deltares (Delft)
- Tideway
- TKI Deltatechnologie
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Source: Jumelet et al (2024)
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The stability of mild rock-armoured slopes has been studied. Physical model tests have been performed to study static stability of rock-armoured mild slopes. Current stability design formulae for steeper rock-armoured slopes focus on plunging and surging waves. Slopes of 1:6 and milder usually have more spilling breakers which decreases the load. Also, on mild slopes displaced rocks more often remain present in the wave attack zone, which increases the strength. These aspects lead to an overdesigned structure when existing formulae for steep rock-armoured slopes are used (which is the standard approach at the moment). The present wave flume tests were used to understand the processes and develop a design formula for rock-armoured mild slopes with an impermeable core. These tests were performed for statically stable rock-armoured slopes of 1:6 to 1:10. The tests confirmed that not all existing damage parameters are able to accurately describe the static stability on milder slopes. For mild slopes it is more accurate to describe the damage based on the eroded depth rather than on the eroded area or number of moved stones. In this study, a design formula and guidelines are provided for practicing engineers that design or evaluate the stability of mild rock-armoured slopes. These guidelines are more accurate than existing guidelines and prevent overdesign of rock-armoured mild slopes, compared to earlier design methods.
Source: Jumelet et al (2024)
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Venrooy, T (2021), Stability of stones on mild slopes, Delft University of Technology, M.Sc. thesis; http://resolver.tudelft.nl/uuid:4506317c-cf42-4450-bad3-580223b4c546
Van MarrrewijkMarrewijk, J. (2024), Influence of the slope angle on wave overtopping at rubble mound breakwaters, Delft University of Technology, M.Sc. thesis; http://resolver.tudelft.nl/uuid:6d1f6c28-f4c3-4822-affa-7a761856cd07
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