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Li, Qiang (author), Wang, Xinquan (author), Gavin, Kenneth (author), Jiang, Shengxiang (author), Diao, Hongguo (author), Wang, Mingyuan (author), Wang, Kangyu (author)Scour leads to the loss of soil around monopile foundations for offshore wind turbines, which affects their structural safety. In this paper, the effect of scour on the lateral behaviour of monopiles was extensively investigated using finite element analysis, and calibration and comparison were undertaken using centrifuge tests. Piles with three...journal article 2024
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Baron, Edward A. (author), Mendoza Cabanzo, Carlos (author), Bento, Ana Margarida (author), Matos, Jose C. (author), Calçada, Rui (author), Gavin, Kenneth (author)Europe’s historic masonry arch bridges are culturally and economically significant, but their long-term safety must be ensured. Scour effects are the most common cause of collapse, so it is necessary to carry out structural assessments to mitigate the risk and prevent potential failures. In this study, a metamodel-based method was used to...journal article 2024
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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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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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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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Koopmans, H. (author)Over one hundred scour holes are located in the Rhine-Meuse delta. These scour holes have relatively large depths and steep slopes and could pose a risk to the stability of river banks and hydraulic structures, especially since some scour holes are still growing. Scour holes develop at locations where either the hydrodynamics or the erodibility...master thesis 2017
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Van Eijk, T.F.A. (author)Within Royal HaskoningDHV an innovative concept is thought to be feasible as a new foundation for larger wind turbines in deeper waters. In this thesis the development of this innovative offshore wind turbine foundation was aided. The research focused on two topics: - Scour at this gravity based foundations. - Possible design optimisations with...master thesis 2016
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Centen, I. (author)In this report a prediction method is developed for scour around monopiles. A soft computing technique called genetic programming (GP) is used to create a scour prediction formula that can compute scour in all offshore conditions, meaning current-induced, wave-induced and combined current- and wave-induced scour. The GP was trained with an...master thesis 2015
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Pascu, V. (author)Wind power has proven to be one of the most versatile forms of renewable energy. Similarly, offshore wind is currently emerging as the most promising method of meeting the global target for low cost of renewable energy production, given the massive potential of wind at sea. However, from the wind turbine design point of view, the requirement of...master thesis 2015
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Straathof, J. (author)Onderzoek naar de ontgrondingen rond brugpijlers met een focus op de ontrgronding rond de pijlers van de Waalbruggen in Nijmegen. Door het graven van een nevengeul ontstaat een andere hydraulische situatie waardoor de bescherming rond de pijler aangepast moet worden.report 2015
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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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Van den Brink, F. (author)Scour hole formation around offshore monopile foundations is a threat for the structure’s stability. Large uncertainty leads to conservatism in design codes and hence to high construction costs. Under the same hydrodynamic loading as for scour hole formation the soil can liquefy due to structural vibrations or waves. The aim of this study is to...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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Blokland, T. (author), Mooijman, P. (author)Praktijkmetingen van de ontgrondingen bij een afmeerplaats van binnenvaartschepen aan een kade ten gevolge van boegschroefstralen en hoofdschroefstralen.De proeven zijn uitgevoerd in Rotterdam bij de Parkkade, gelegen langs de Nieuwe Maas ten oosten van de Parkhaven. Op 9 april is een proef uitgevoerd met meerdere afvaarten van binnenvaart...report 2013
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Papadopoulos, D. (author)Scour formation at the toe of a rubble mound breakwater can lead to abrupt failure. Nowadays, counteraction of scour via geometrically closed filter rules, geotextiles or combinations is the common practice. Alternatively, in specific cases the use of geometrically open filters can save significant amount of time and decrease constructional...master thesis 2012