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Groen, Olivier (author)A combination of the growth of the offshore wind energy sector and the decline in both species richness and species abundance in the North Sea has inspired the goal to use the scour protection in wind farms as a means to enhance marine life. Present research has focused on general changes which are to be applied to benefit marine life. However,...master thesis 2019
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Üşenti, Batuhan (author)For a project in the province of Zeeland, The Netherlands, a culvert was installed trough a dike to restore the tidal flow. Shortly after commissioning of the facility a scour hole at the end of the bottom protection developed. Although the scour hole was anticipated in the design, the scour hole was developing more rapidly than predicted....master thesis 2019
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Koevoets, Igor (author)In the Rhine-Meuse Delta over 100 scour holes are located. Many of these scour holes have dynamic behaviour and are growing in size and depth. A scour hole can lead to an increased probability of flooding. One of the potential hazards of the presence of scour holes is the occurrence of flow slides on the foreshore next to scour holes. Depending...master thesis 2019
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Fiolet, Daniel (author)This thesis introduces a fragility-based framework in order to perform a custom assessment of the complex Eastern Scheldt storm surge barrier. By applying a conditional approach to loading parameters, the statistical dependency between failure mechanisms and structure elements can be described separately for the strength and loading part of the...master thesis 2019
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Gutiérrez, Juan Pablo (author), van Halem, D. (author), Uijttewaal, W.S.J. (author), del Risco, Efraín (author), Rietveld, L.C. (author)As a consequence of the suspended sediments in river water, cake formation on the streambed and clogging of the aquifer may occur, leading to a decline in the production yield of riverbank filtration systems, particularly in highly turbid river waters. However, naturally occurring flow forces may induce sufficient scouring of the streambed,...journal article 2018
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Chortis, Giorgos (author)Offshore wind farms are rapidly developing in Western Europe as an alternative means of clean energy. The foundation of wind-turbines in the shallow water of the Northern Sea is almost exclusively (over 87%) performed by short rigid monopiles, as an efficient and relatively cheap solution. Scour formation, meaning the soil removal around the...master thesis 2018
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van de Zande, Bart (author)In the proximity of the Eastern Scheldt storm surge barrier (ES-SSB), one of the largest hydraulic structures of the Dutch Delta Works, scour holes have developed that potentially threaten the stability of the structure. Although, these scour holes were anticipated in the design phase recent bathymetry measurements show that they are growing...master thesis 2018
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Wevers, Toon (author)In this research the hydrodynamic stability of a ballast filled mattress under waves is investigated. There is checked if this can be applied as scour protection around a suction bucket jacket: an offshore wind turbine foundation that uses a vacuum to suck itself in position. A ballast filled mattress is a mattress made from polyester with so...master thesis 2018
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Baas, Jurian (author)Current trends show that the offshore wind industry is evolving into deeper waters, with larger turbines and consequently larger foundations. In Europe 80% of the wind turbines are installed on monopile foundations and this is expected to be the dominant choice in the future. The shallow geology of most of the wind farms is characterized as sand...master thesis 2018
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Beulink, Laurens (author)In the light of the waterframework directive, the dutch organisation of rijkswaterstaat has decided to investigate the application of logs as a biological alternative for the protection and cover of both naturally developing scour holes. In this research a laboratory model was created that was designed to develop a scour hole by gradually...master thesis 2018
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van der Bilt, Daphne (author), Kroes, Jenske (author), Paulissen, Sjoerd (author), van Wierst, Bas (author)The reach of the Magdalena River around the city of Barrancabermeja experiences large issues concerning its navigability since the construction of the Yondó Bridge. The purpose of this study is to investigate possible causes of this poor navigability and to come up with an improvement to the current situation. The influence of bars and scour...student report 2018
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Chortis, Giorgos (author)Wind turbines are nowadays the main means for producing renewable energy in Northern and Western Europe, and therefore research is conducted to secure their efficiency. One of the critical aspects of the windfarms is the foundation type, as it can define the functionality and the cost of each turbine. Monopiles have prevailed as the most...student report 2018
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Prendergast, L.J. (author), Reale, C. (author), Gavin, Kenneth (author)The trend for development in the offshore wind sector is towards larger turbines in deeper water. This results in higher wind and wave loads on these dynamically sensitive structures. Monopiles are the preferred foundation solution for offshore wind structures and have a typical expected design life of 20 years. These foundations have strict...journal article 2018
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Broekema, Y.B. (author), Labeur, R.J. (author), Uijttewaal, W.S.J. (author)Scour in the vicinity of a hydraulic structure may compromise its geotechnical stability or that of nearby structures. Much fundamental research has been dedicated to the understanding and prediction of these processes, in order to enable the efficient design of mitigation measures. While most of these efforts consider laterally uniform flows,...journal article 2018
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Gavin, Kenneth (author), Prendergast, L.J. (author), Stipanovič, Irina (author), Škarič−palič, Sandra (author)There have been significant developments in the area of vibration-based bridge scour monitoring in recent years. Traditional scour monitoring using either visual assessment or diving inspections are now recognised to be very unreliable and highly subjective. There has been a concerted effort to move towards reliable systems capable of either...journal article 2018
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Prendergast, L.J. (author), Limongelli, Maria P. (author), Ademovic, Naida (author), Anžlin, Andrej (author), Gavin, Kenneth (author), Zaninil.j.prendergast@tudelft.nl, Mariano (author)Bridges can be subjected to damaging environmental actions due to flooding and seismic hazards. Flood actions that result in scour are a leading cause of bridge failure, while seismic actions that induce lateral forces may lead to high ductility demand that exceeds pier capacity. When combined, seismic actions and scour can lead to effects...journal article 2018
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Middelweerd, luuk (author)In the Dutch coastal waters more and more wind turbines on monopile foundations are built. An important design parameter is the first natural frequency of the wind turbine. The first natural frequency is dependent on environmental conditions and different soil conditions such as scour. This research gives a better insight into the sensitivities...master thesis 2017
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Bom, Sam (author)In the Rhine-Meuse Delta in the Netherlands, deep scour holes can develop very suddenly. The holes may form a potential risk for the stability of surrounding riverbanks, dikes, bridges, tunnels and buildings. A scour hole can mostly be the result of two conditions: local changes in hydrodynamical conditions or local changes in erosive capacity...master thesis 2017
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Stenfert, Joost (author)In the Rhine-Meuse delta many scour holes are present. These scour holes form a potential risk on the surrounding bridges, levees, weirs, dikes and tunnels. In general, scour holes can develop when there is a local change in hydrodynamic conditions or erosive capacity. Extensive research has been done in the past on scour holes close to...master thesis 2017
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Prendergast, L.J. (author), Gavin, Kenneth (author), Hester, David (author)Detecting scour by analysing bridge vibrations is receiving an increasing amount of attention in the literature. Others have considered changes in natural frequency to indicate the presence of scour damage; however, little work has been reported on identifying the location of a scour hole based on vibration measurements. In this paper, a...journal article 2017