Searched for: subject:"revetments"
(1 - 20 of 135)

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Hai, T.L. (author), Verhagen, H.J. (author)
Many dike failures have been ignited by damage due to erosion on the landward slopes. This paper investigates how grass covered slopes perform when being attacked by overtopping flow during storm surges. Based on observations during a number of simulator tests, damage is classified into three types 'head-cut', 'roll-up' and 'collapse' depending...
conference paper 2014
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Verhagen, H.J. (author)
Apart from many ecological advantages, mangroves in front of a coastal defence may lower the construction and maintenance costs of the defence. Although mangroves have hardly any reducing effect on water levels (and on tsunami impact) mangroves may significantly reduce wave attack on a coastal dike, and in this way reduce the cost of a revetment...
conference paper 2012
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Van Geer, P.F.C. (author), Van Thiel de Vries, J.S.M. (author), Boers, M. (author), Den Bieman, J.P. (author), McCall, R.T. (author)
This paper presents adaptations to the XBeach model aimed at including the relevant processes for the generation of scour holes at the toe of a revetment. Dutch assessment rules for the safety of sea defenses need to be adjusted to cope with a combination of sandy dunes and hard elements. To that end, the XBeach model is prepared to be...
conference paper 2014
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Verhagen, H.J. (author)
A new construction method of Polyurethane (PUR)-bonded revetments has been tested successfully on various locations in Germany, in the Netherlands, in France, and in the UK. See also the presentation of Bijlsma on this ICE breakwater conference. This year a series of large scale test in the GWK-facility in Hannover have been executed. This...
conference paper 2009
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Van Thiel de Vries, J.S.M. (author)
In a situation with a narrow dune, the dune base can be protected with a revetment to reduce dune erosion during extreme events. To quantify the effects of a revetment on storm impact, the functionality of the numerical storm impact model XBeach (Roelvink et al., 2009) is extended to account for the complex morphodynamics around revetments. Here...
conference paper 2012
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Dorst, K. (author), Provoost, Y. (author), Verhagen, H.J. (author)
A revetment of pattern placed elements, or a so called pitching, is used worldwide to protect shorelines and embankments. Also in The Netherlands more than 500 km of river, lake and sea dikes is protected by pitchings. Until the 60’s the design and construction of pitchings was based on experience. After the first damages on pitchings and the...
conference paper 2012
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Verhagen, H.J. (author)
Because of problems with the design guidelines produced by PIANC for armoured slopes under attack by bowthrusters, additional work has been done in the Netherlands. On the basis of this work computational rules have been developed. However, because of the increase of bowthruster power, more detailed knowledge is needed on the effect of a...
conference paper 2001
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Oumeraci, H. (author), Staal, T. (author), Pfoertner, S. (author), Kudella, M. (author), Schimmels, S. (author), Verhagen, H.J. (author)
Elastomeric bonded permeable revetments, also called PBA (Polyurethane bonded aggregate) revetments, are highly porous structures made of mineral aggregates (e.g. crushed stones) which are durably and elastically bonded by polyurethane (PU). Despite their numerous advantages as compared to conventional revetments and the large experience...
conference paper 2010
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Verhagen, H.J. (author)
A new construction method of Polyurethane (PUR)-bonded revetments (Elastocoast) has been tested successfully on various locations in Germany, in the Netherlands, in France, and in the UK. See also the presentation of Bijlsma on this conference. This year a series of large scale test in the GWK-facility in Hannover have been executed. This...
conference paper 2009
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Verhagen, H.J. (author), Jaspers Focks, D.J. (author), Algera, A. (author), Vu, M.A. (author)
Vetiver grass is a sustainable and innovative solution for the protection of banks. It is shown that Vetiver grass is able to establish a full-stop of bank erosion caused by rapid drawdown. Therefore it provides us with strong indications that it is highly suitable as an anti-erosion measure. A combination of cohesive soil and Vetiver grass...
conference paper 2008
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Verhagen, H.J. (author)
A new construction method of Polyurethane (PUR)-bonded revetments has been tested successfully as stable breakwater constructions on various locations in Germany (“Hamburg Hallig”, “Holm Gröde”), as dike revetment in the Netherlands (breakwater revetment in Zuidbout and Petten), as shoreline protection in France (canal embankment near Le Havre),...
conference paper 2009
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Jassim, I. (author), Tan, S. (author), Vermeer, P.A. (author), Hicks, M.A. (author)
The numerical simulation of wave attack on a sea dike with an asphalt concrete revetment during a severe storm is carried out using the dynamic Finite Element Method. When wave loads attack the revetment during such a storm, both the revetment and the underlying soil may be damaged. The two-phase flow equations are considered, to study the...
conference paper 2012
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Verhagen, H.J. (author)
Dike design is a very traditional craft. Since many generations dikes have been constructed in our part of Europe. After each disaster the dike was rebuilt, and improved. The improvement was always based on the experiences of the previous flood. For example, for many years the design height of a dike was determined as the height of the highest...
conference paper 2007
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van der Meer, J.W. (author)
Abstract not available
doctoral thesis 1988
document
Verhagen, H.J. (author)
Dit artikel behandelt het deelonderzoek naar de sterkte van de glooiingen van de Oosterscheldediiken onder invloed van geconcentreerde golfaanval. ln dit artikel wordt naast de vastelling van een aantal parameters, met name de vaststelling van het berwijkmodel van een glooiing belicht. De geconcentreerde aanval (lange tijd op een vast niveau) is...
journal article 1985
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Gu, D. (author), Verhagen, H.J. (author), Van de Ven, M. (author)
PUR-revetment is a newly developed method for hydraulic application. Its structure is similar to that of open stone asphalt revetment, but the crushed stones are glued by polyurethane (PUR) instead of bitumen. To study the feasibility of applying PUR-revetment, a research based on the comparisons between PUR-revetment and open stone asphalt...
journal article 2008
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Zanen, A. (author)
lecture notes 1981
document
Schiereck, G.J. (author)
Loads (flow, waves, ships, porous flow), Erosion (flow, remainder) Load reduction, stability (flow, waves, porous flow), Protections, construction and maintenance, design.
lecture notes 1993
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Dorst, C.J. (author)
Lecture notes on dikes and revetments, part on stone pitching revetment design. Design rules for concrete block revetments.
lecture notes 2004
document
Schiereck, G.J. (author)
Flow (loads, stability, erosion) Porous flow (general, filters), waves (loads, stability, erosin), ships, protections, construction and maintenance, design.
lecture notes 1996
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