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Buitenhuis, Rutger (author)
master thesis 2023
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Scheeper, Tom (author)
Wind turbine installation vessels (WTIVs) are ships that are specifically designed to install offshore wind turbines. These WTIVs have four or six large truss-like legs that are lowered towards the seabed by means of jacking systems. These jacking systems are regulated by control systems to ensure the leg is lowered with a constant velocity...
master thesis 2023
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MAKRYKOSTA, ANNA (author)
Offshore wind energy's rapid expansion underscores the need for accurate and efficient methods to analyze the behavior of monopile foundations supporting wind turbines. While three-dimensional (3D) analyses provide comprehensive insights, their computational demands are significant. As an alternative, one-dimensional (1D) models with spring...
master thesis 2023
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van Alphen, Krijn (author)
This thesis describes the investigation of the lateral monopile response in weak rock and the effect of a zone of crushed rock that is induced by driven installation. The goal of the investigation is to study the impact of the weaker zone around a monopile on the lateral response. The thesis focuses on the modelling of a monopile in a finite...
master thesis 2023
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Dijksman, Brice (author)
To support offshore wind turbines (OWT), monopiles are currently the most frequently used foundation method. These monopiles are open-ended steel tubes with a diameter of 5 - 12 m, which are most often installed in the seabed by means of hydraulic impact hammering usually mounted...
master thesis 2023
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El-Ghalbzouri, Amal (author)
Monopiles are by far the most chosen foundation option for most off-shore activities. The installation of the foundation is commonly done by impact pile driving. The biggest issue of the traditional pile driving method is the sound emission, which reaches levels that are harmful to the immediate environment. Partly because of this, an...
master thesis 2022
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Delavinia, Dimitra (author)
New offshore wind farms consisting of monopile-founded Offshore Wind Turbines (OWTs) are to be built in earthquake-prone areas. To design the monopile foundation and to accurately define the dynamic response of an OWT, the soil-monopile-superstructure interaction should be modelled properly. Due to the fact that the Three-Dimensional (3D) Finite...
master thesis 2022
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Speelman, Ruben (author)
In the underwater environment, it is all but silent. In most parts of the oceans, sunlight is barely available and thus marine animals have evolved to rely on sound for navigation, foraging and communication. Marine animals are not the only sources of underwater sound. Other natural sources such as earthquakes, waves and rain cause ambient noise...
master thesis 2022
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Brandt, Karel (author)
With a worldwide growing consensus on fossil fuel combustion have a negative impact on climate, society, and biodiversity, the urge for renewable energies is growing rapidly. One the most widely used renewable energy source is wind energy and for this purpose both onshore and offshore wind farms (OWFs) are being developed. In recent years the...
master thesis 2022
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Mohanty, Avinab (author)
Vibratory installation of piles and casings can be extremely economical, therefore the contractors prefer pile driving. When compared to impact pile driving, vibratory pile driving generates less noise but this installation method is still fraught with uncertainties (Rausche 2003). Environmental effects (such as ground vibrations) have negative...
master thesis 2022
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CAUMO, GIORGIO (author)
In the last decades, renewable energies gained an increasing interest due to the environmental awareness of people, especially in the developed countries. Moreover sustainable resources represent a long-term investment full of possibilities of use. <br/>In the Netherlands a technology which is getting more and more popular to produce green...
master thesis 2022
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Speelman, Bas (author)
The submerged floating tunnel (SFT) is a conceptual idea that originates from the 19th century. The idea consists of a tunnel tube floating underwater where it is kept at a fixed depth by its buoyancy and by tethers that are anchored to the seabed and or by floating pontoons at the water surface. The tunnel is placed deep enough to avoid extreme...
master thesis 2021
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Funatake, Shotaro (author)
Offshore wind energy is one of the emerging renewable technologies toward a zero-carbon emission society. Historically, offshore wind farms have been developed in the North Sea, but nowadays wind farms are expanded to other regions such as North America and Asia, which are seismic prone.<br/>In the design of Rotor-Nacelle-Assembly (RNA) and...
master thesis 2021
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Liao, Kan (author)
The suction pile foundation is a large steel cylinder with an open end and sealed top. This foundation type is widely used in the oil&amp;gas industry and wind energy. Experimental investigation and numerical investigation are the main two methods to understand the performance of the suction bucket foundation. The experimental studies are...
master thesis 2020
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Emondt, Erik (author)
Jack-up designers, owners and operators are expanding their activities into seismically active areas such as Japan and Taiwan. Further development of expertise in seismic analysis of jack-ups is required to improve safety and reduce costs. At present, a linear elastic foundation model is used in seismic assessments. Improved understanding of...
master thesis 2020
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van de Velde, Tibo (author)
Developments in structural engineering give rise to the ability of increasing the slenderness within the design of footbridges. However, this often results in a fundamental eigenfrequency which coincides with the step frequency range of humans on the bridge. This can lead to uncomfortable vibrations of the structure. In order to maintain the...
master thesis 2020
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Yang, Boyuan (author)
In finite element analysis, nonlinear time-history analysis is a realistic and accurate analysis type for dynamic or seismic analysis due to its solutions contain wealthy data and complete response time-history. The most commonly used method, probably the only practical procedure, in nonlinear time-history analysis is the direct time integration...
master thesis 2019
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Kroon, David (author)
Liquid storage tanks are used worldwide to contain liquids such as drinking water, fuel and chemicals. Loss of containment during a seismic event can add to an earthquake’s destructiveness by posing a fire hazard, spilling toxic substances or reducing the supply of drinking water. It is therefore important that they remain operational at a pre...
master thesis 2019
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Vorderegger, Ruben (author)
The Afsluitdijk will undergo major redevelopment. After more than 80 years, the structure is ready for an upgrade. One of the differences which face the engineers of today compared to the original designers is climate change as well as the strict flood safety standards of the 21st century. Climate change is the lead cause of the sea level rise,...
master thesis 2019
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VĂCĂREANU, Vlad (author)
This work presents a numerical study on the dynamic response of monopile-supported offshore wind turbines (OWTs) under seismic loading conditions. For this purpose the realistic design ofa 8 MW OWT is considered as ideally located in a layered, non-liqueable site off the coast of Japan. This choice allowed to employ available site...
master thesis 2019
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