Searched for: contributor:"Verheij, H.J. (mentor)"
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van Oorschot, N. (author)
The Netherlands is a country where people have to live with water, rather than fighting against it. This philosophy often requires interaction between infrastructure and waterways, where (hydraulic) structures are placed close to or even extending in the waterway, introducing the risk of ship collision. What makes this accidental load so...
master thesis 2017
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Prins, J.M.W. (author)
master thesis 2017
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Van Leeuwen, P. (author), Van Olst, L. (author), Van der Scheer, B.H. (author)
Door menselijke ingrepen zoals versmalling en rechttrekken van de rivier, winning van bouwstoffen en de bouw van waterwerken krijgen Nederlandse rivieren steeds minder zand en grind aangevoerd. De stroomsnelheid en daarmee de erosie nemen toe. Er ontstaan grote ontgrondingskuilen, die het risico op het bezwijken van de oever vergroten. Om dit...
bachelor thesis 2016
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Hofland, F.P.J. (author)
The city of Amsterdam increases with approximately 10,000 inhabitants per year and Amsterdam-North is strongly under development attracting housing, employment and (re)creational activities. This is expected to induce a growth of 65% in pedestrians and cyclists, referred to as slow traffic. crossing the river IJ in 2025. The city ferry system,...
master thesis 2016
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Gerritse, A.R. (author)
In recent years, in a number of projects gate drive mechanisms of navigation locks were checked or adapted for a longer service life, during which the reliability, safety and availability of the structure had to be guaranteed for an extended period. Several problems were encountered. When verifying the gate drive mechanism, it was found that the...
master thesis 2016
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Cete, C. (author), Haage, S. (author)
Om erosie en ontgronding in rivieren te voorkomen kan bodembescherming worden toegepast. Voor stenen als bodembescherming zijn er al twee verbanden bekend tussen de stroomsnelheid waarbij de stenen instabiel worden, ofwel de kritieke stroomsnelheid, en de diameter. Deze twee verbanden zijn door de onderzoekers Izbash en Shields samengesteld....
bachelor thesis 2016
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Beers, W.R. (author)
Door klimaatveranderingen ontstaan grotere verschillen in de afvoeren van de rivieren. Als deze afvoeren groter worden geeft dit hogere waterstanden in de rivieren waardoor de afstand tussen het water en de bruggen over de rivieren kleiner wordt. In combinatie met de steeds meer gebruikte hogere high-cube containers door de binnenvaart kan dit...
bachelor thesis 2016
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Pasaoglu, M. (author)
As the shipping industry is growing, more and more propulsion systems are being developed with better propulsion capabilities. These current and newly developing systems in ships are expected to cause scour at beds around berthing structures with greater likelihood than the systems preceding them, which increases the importance of protection...
master thesis 2015
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Salih, R.S. (author)
Voor het varen in stilstaand water is door Schijf een methode ontwikkeld die, middels het behoud van massa en energie, een beschrijving geeft van de stroming naast en onder het schip. Doordat het schip het water voor de boeg verdringt naar de achterzijde, zal een stroming optreden die tegengesteld gericht is aan de vaarrichting. De bijkomende...
bachelor thesis 2015
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Hollander, W. (author)
A filter can be applied to protect a bed against scour. Normally, these filters are geometrically closed, to prevent winnowing of the base material through the filter. However, geometrically closed filters are expensive and difficult to realize in the field. Geometrically open filters can serve as an alternative. Within an open filter, the pores...
master thesis 2015
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Robijns, T. (author)
Growing transportation rates and the subsequent growth in inland waterway transport have led to an increase in inland vessel sizes and draught. Due to the fluctuating water levels on rivers and these increasing draughts, the distance between the river bed and the ships are decreasing. Rijkswaterstaat wants to know the effects of sailing at these...
master thesis 2015
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Lamboo, M.C.T. (author)
Dit rapport geeft een capaciteitsanalyse van de Prinses Margrietsluis in Lemmer (Friesland). De sluis met één kolk geeft toegang tot het Prinses Margrietkanaal / de Hoofdvaarweg Lemmer-Delfzijl en vormt de op één na belangrijkste verbinding voor de recreatievaart tussen het IJsselmeer en de Friese Meren. Een relatief hoog aandeel van de 40.000...
master thesis 2015
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Lee, E.K.C. (author)
Een van de belangrijkste aspecten bij het ontwerp van een nieuwe binnenhaven of waterweg is de toegankelijkheid voor de scheepvaart. Tot medio de jaren 90 toen de Richtlijnen Vaarwegen werden gepubliceerd werd ontworpen op basis van het oordeel van ervaren nautici die zich aan de hand van bezoek, onderzoek van de stroming een beeld van de...
master thesis 2014
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Schoen, J.J. (author)
Pipelines and cables on the sea bottom are usually protected by a cover of dumped rock. In case of maintenance or removal works, this cover has to be removed in order to expose the pipeline. This removal can be performed by means of a mass flow excavation process, created with a submerged jet flow. However, the exact erosion processes of a...
master thesis 2014
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Roelse, F.P. (author)
In the last decades shipping has increased significantly, resulting in larger ships with an increasing power in bow thrusters. Due to this increasing power, the hydraulic loads at bottom protection near quay structures has also increased, making a traditional bed protection more expensive. Therefore an alternative design method is suggested in...
master thesis 2014
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De Jong, J. (author)
Introduction Bow thrusters are of great help for the navigation at quay walls, but the high and turbulent velocities can result in a bed load exceeding the strength of the bed or bed protection. To be able to design a stable bed the velocities at the bed need to be accurately determined. In design practise the velocities generated by a propeller...
master thesis 2014
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Van den Brink, A.J.W. (author)
Introduction Inland and seagoing vessels are equipped with (bow) thrusters. The use of these thrusters can cause scour of the bed alongside a quay wall. In order to assess the consequences of local scour due to bow thrusters on the design of the structure it is desirable to know the dimensions of the scour holes as a function of in time....
master thesis 2014
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Pijpers, R. (author)
Hardly any flood defence system is a continuous dike system, since it is often interrupted by non-water retaining structures, as for example stairs, buildings, roads, fences and trees. Also larger hydraulic structures as floodgates and sluices are sometimes situated in the dike alignment. The transition between these different objects and the...
master thesis 2013
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Kalf, P.N.M. (author)
This research focusses on the behaviour of fine particles which pass through the armour layer of bed material of the upper and middle reaches of a river. When the fine particles are entrained in the armour layer, it is described as ‘winnowing’ or vertical entrainment. A river bed generally consists of a coarse surface layer, which is the...
master thesis 2013
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Van de Sande, S.A.H. (author)
Granular filters are used for protection against scour and erosion. For a proper functioning it is necessary that interfaces between the filter structure, the subsoil and the water flowing above the filter structure are stable. Stability means that there is no transport of subsoil material through the filter to the water above the filter, and...
master thesis 2012
Searched for: contributor:"Verheij, H.J. (mentor)"
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