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Salauddin, M. (author)
In the design of rubble mound breakwaters, nowadays single layer systems using concrete armour units have become more common practice compared to conventional two layer systems. However, after the introduction of the accropode in eighties, a small number of single layer armour units have been developed over the years; for example core-loc, A...
report 2015
document
Trung, L.H. (author)
The study aims to establish a set of formulas estimating velocity and depth of overtopping flows at sea dikes including seaward-side slope, crest and landward-side slope. These formulas are applicable to flows which are generated by natural waves and the simulator giving associated characteristics of any arbitrary value of exceedance probability...
report 2014
document
Van der Meer, J.W. (author), Hoffmans, G. (author), Van der Hoven, A. (author)
Within the framework of WTI, Research and Development of Flood Defence Assessment Tools (Wettelijk Toetsinstrumentarium), which is called in Dutch: WTI-2017 "Onderzoek en ontwikkeling landelijk toetsinstrumentarium", research was carried out to develop an erosion model for grass in the wave run-up zone consistent with the current model in use...
report 2014
document
Verhagen, H.J. (author)
Example calculation of a dike height incorporating the uncertainty in the wave growth formula of Young and Verhagen.
report 2013
document
Lorke, S. (author), Bornschein, A. (author), Schüttrumpf, H. (author), Pohl, R. (author)
The investigations of FlowDike 1 and FlowDike 2 on the effects of onshore wind and longshore current on wave run-up and wave overtopping for perpendicular and oblique wave attack. These variables were two of the missing effects in freeboard design and therefore a main interest for design purposes. Model tests were carried out in the shallow...
report 2012
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Van der Meer, J.W. (author)
The Wave Overtopping Simulator was developed in 2006 and destructive tests have been performed in February and March of 2007, 2008 and 2009 and will probably be continued in 2010. The tests show the behaviour of various inner slopes of dikes, embankments or levees under simulation of wave overtopping, up to a mean overtopping discharge of 125 l...
report 2009
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Erchinger, H.F. (author)
The ‚Guidelines and Recommendations for the Design of Coastal Structures (EAK)‘ published in 1993 (Die Küste, H. 55) have been revised based on today’s scientific knowledge, technical development and practical experience of the past years. Major parts of the recommendations have been re-written. Together with the unmodified recommendations, D, E...
report 2007
document
Kortenhaus, A. (author), Bollinger, K. (author), Dassayanake, D. (author)
Report on laboratory tests on a crest drainage dike; investigation if a channel in the crest of the dike is able to decrease the amount of overtopping over the dike. Chapter 2 provides details about findings from previous studies and the relevance of those findings to this research project. Available literature on wave run-up and wave...
report 2007
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van Gerven, K.A.J. (author), Akkerman, G.J. (author)
The present report deals with the application of a provisional Smart Grass Reinforcement (SGR) system in 2006 for full scale testing of increased overtopping at the Groningen sea dyke test section near Delfzijl, as envisaged in 2007. The SGR has been placed at two strips of 4 m wide: one primary strip at the basic test site and one at a...
report 2007
document
Akkerman, G.J. (author), van Gerven, K.A.J. (author), Schaap, H.A. (author), van der Meer, J.W. (author)
In the present report field erosion tests of the inner slope of a sea dyke in the province of Groningen (near Delfzijl) are described for the situation of severe wave overtopping. Three types of tests have been performed: tests at the present grass cover, tests at a reinforced grass cover and tests at a section of bare clay. At the reinforced...
report 2007
document
Van der Meer, J.M. (author)
The wave overtopping simulator is a device which is able to simulate overtopping waves at the crest of a dike and at the inner slope. The device has been used in the ComCoast project to test a traditional dike section with grass and the SGR, the Smart Grass Reinforcement, placed in May 2006. This report describes in the first part (Chapters 1-6)...
report 2007
document
Lykke Andersen, T. (author)
An introduction to the principles and fundamentals of designing rubble mound breakwaters, led to the definition of two important white spots in designing rubble mound breakwaters. These were selected for further investigations in the present thesis. 1. Design of berm breakwaters: A generally lack of data and design formulae was identifed, but...
report 2006
document
Oedekerk, M. (author)
Climate change will cause increasing physical loads on the flood defence of the Province of Groningen along the North Sea over the next decades. This is caused by a sea level rise between 15 and 35 centimetres whilst the ground level is lowering between 38 and 48 centimetres until the year 2050. This results in salt-water intrusion into the land...
report 2006
document
Van Gerven, K.A.J. (author), Van der Meer, J.W. (author), Van Heereveld, M.A. (author), Akkerman, G.J. (author)
The present proposal deals with a presentation of three potentially feasible concepts for strengthening of the sea defences as to allow for increased wave overtopping, within the framework of ComCoast. In addition, for each concept an indicative proposal is given for a further theoretical study (Phase 2) and an indicative approach is shown for...
report 2005
document
ComCoast (author)
An important element in the ComCoast concept is the overtopable sea defence (often a dike). In this concept the landward (inner) slope of the dike is adjusted in such a way that it can withstand higher overtopping rates. Two new concepts for covering the inner slope, sand cover and perforated mats, are discrebed in this report.
report 2005
document
Steenbrink, R. (author), Pwa, S.T. (author), Busneili, M.M. (author), Karelse, M.K. (author)
The objective of ComCoast (Combined functions in coastal defence zones) is to investigate how a multifunctional wide sea defence zone might be created. Instead of just increasing the height and weight of the dike, solutions are searched in the wide sea defence zone landward. These is an number of technical solutions, one of them is increasing...
report 2005
document
Ahlhorn, F. (author)
ComCoast (Combined Functions in Coastal Defence Zones) is an INTERREG IIIB project funded by the EU. ComCoast aims to develop and demonstrate innovative solutions for flood protection in coastal areas. In ComCoast, five countries from the North Sea Region are involved: Belgium, Denmark, The Netherlands, Germany, and the UK. In total, ten...
report 2005
document
Van Gerven, K.A.J. (author), Akkerman, G.J. (author)
The present report provides a state-of-the-art inventory of relevant information and technical concepts for the ComCoast project, being the first phase of the research stages of Work Package 3 (WP3). This project was assigned to Royal Haskoning by CUR. The information scan was set-up in a systematic way. About 160 relevant references have been...
report 2005
document
Nieuwenhuis, O.E. (author)
The ComCoast concept involves measures in seaward and landward direction. One of the options in landward direction is an overtopping dike. In this concept the crest and/or inner slope of the dike is strengthened so that more overtopping of the dike can be allowed. Advantage is that heightening of the dike is not necessary and furthermore this...
report 2005
document
Nieuwenhuis, O.E. (author)
The ComCoast concept involves measures in seaward and landward direction. One of the options in landward direction is an overtopping dike. In this concept the crest and/or inner slope of the dike is strengthened so that more overtopping of the dike can be allowed. Advantage is that heightening of the dike is not necessary and furthermore this...
report 2005
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