- document
- Segeren, M.L.A. (author), Lourens, E. (author) conference paper 2013
- document
-
Segeren, M.L.A. (author), Lourens, E. (author)To circumvent current industry problems related to the settling of grouted connections, a steel-to-steel or slip joint connection is proposed for fitting a transition piece onto an installed monopile foundation. In the first part of this contribution, a simplified dynamic analysis of the installation of such a joint is considered. Assuming...conference paper 2013
- document
-
Versteijlen, W.G. (author), Van Dalen, K.N. (author), Metrikine, A. (author), Hamre, L. (author)In this contribution, in situ seismic measurements are used to derive the small-strain shear modulus of soil as input for two soil-structure interaction (SSI) models to assess the initial soil stiffness for offshore wind turbine foundations. This stiffness has a defining influence on the first natural frequency of offshore wind turbines (OWTs),...conference paper 2014
- document
-
Klinkvort, R.T. (author), Leth, C.T. (author), Hededal, O. (author)The pile-soil interaction is of great importance in the design of monopiles supporting offshore wind turbines. Especially the predication of accumulation of rotations, change in stiffness and damping is difficult. The design tools used today cannot in a proper way take the effects from cyclic, lateral loading into account. In order to develop...conference paper 2012
- document
-
Segeren, M.L.A. (author)Support structures for offshore wind turbines play a significant part in the cost of offshore wind energy. With current access systems a conventional boat landing is not necessary. Secondary steel, such as a boat landing and J-tube, influences wave loads. A way of taking the secondary steel items into account in the wave load calculation is...conference paper 2011
- document
-
Panagoulias, S. (author), Brinkgreve, R.B.J. (author), Minga, Elini (author), Burd, Harvey (author), McAdam, R. (author)The recently-completed PISA (PIle Soil Analysis) research project aimed to improve the design of monopile foundations for offshore wind turbines (OWT), focusing on laterally-loaded monopiles with length-to-diameter (L/D) ratios between 2 and 6. The project resulted in a novel one-dimensional (1D) design model which overcomes certain limitations...conference paper 2018
- document
-
van der Stap, Florian L. (author), Nielsen, Martin B. (author), Owen, C.C. (author), van der Male, P. (author), Hendrikse, H. (author)For the design of offshore foundations in regions such as the Baltic Sea, it is paramount that ice-structure interaction is appropriately considered. For the monopile, a common foundation for offshore wind turbines, challenges with ice-induced vibrations and high ridge loads may require ice-mitigating measures to be included in the design. A ...conference paper 2023
- document
-
Panagoulias, Stavros (author), Nernheim, Axel (author), Lisi, Diego (author), Lahoz, Miquel (author), Brinkgreve, R.B.J. (author)Single large diameter piles, known as monopiles, are, nowadays, the most common foundation type for offshore wind turbines (OWT). Several research initiatives have been focusing on improving the conventional design practice. The PISA (Pile Soil Analysis) joint industry research project resulted in a proposal for a new design methodology for OWT...conference paper 2020
- document
-
Gavin, Kenneth (author), Blok, S.D. (author), Eiksund, G.R. (author)Monopiles are the most commonly used foundations for offshore wind turbines (OWTs). To date these are mostly impact driven into the seabed using high-capacity hammers. The noise and vibrations caused by driving create environmental concerns and the increasing size of these foundations has resulted in alternative installation methods being...conference paper 2020
- document
-
Byrne, Byron W. (author), Burd, Harvey J. (author), Gavin, Kenneth (author), Houlsby, Guy T. (author), Jardine, Richard J. (author), McAdam, Ross A. (author), Martin, Chris M. (author), Potts, David M. (author), Taborda, David M.G. (author), Zdravkovic, Lidija (author)This paper provides a brief overview of the Pile Soil Analysis (PISA) project, recently completed in the UK. The research was aimed at developing new design methods for laterally loaded monopile foundations, such as those supporting offshore wind turbine structures. The paper first describes the background to the project and briefly outlines the...conference paper 2019
- document
-
Meijers, P.C. (author), Tsouvalas, A. (author), Metrikine, A. (author)Due to the increasing need for energy from renewable resources, a large number of offshore wind farms are planned to be constructed in the near future. Despite the plethora of available foundation concepts for offshore wind turbines, the monopile foundation is the most widely adopted concept in practice. To predict the installation process for a...conference paper 2017
- document
-
Pisano, F. (author), Corciulo, S. (author), Zanoli, Omar (author)The increasing relevance of offshore wind in the energy mix motivates continual research efforts for the optimisation of foundation systems. Currently, monopiles are still the most common foundations for offshore wind turbines (OWTs), due to their simplicity and the low costs for production/assembly. However, the modern trends towards larger...conference paper 2017
- document
-
Pisano, F. (author)The offshore wind sector is skyrocketing worldwide, with a clear trend towards wind farms installed in increasingly deep waters and harsh marine environments. This is posing significant engineering challenges, including those regarding the design of support structures and foundations for offshore wind turbines (OWTs). Substantial research...conference paper 2019
- document
-
Bienen, Britta (author), Klinkvort, R.T. (author), Fan, S. (author), Black, J. (author), Bayton, S. (author), Thorel, L. (author), Madabhushi, G.S.P. (author), Askarinejad, A. (author), Li, Q. (author)The large diameter monopile is a commonly used foundation concept for offshore wind turbines. The advantages of geometrical simplicity and reliable performance make it often the most attractive solution. Despite the concept’s high popularity, optimisation of the current design models can still be made. To address fundamental understanding of...conference paper 2020
- document
-
Panagoulias, S. (author), Hosseini, S. (author), Brinkgreve, R.B.J. (author), Burd, H. J. (author)This paper describes an implementation of the methodology, developed in Phase 2 the recent PISA (PIle Soil Analysis) joint industry research project, for the design of laterally-loaded monopiles in layered soils. The software PLAXIS MoDeTo and PLAXIS 3D are employed to obtain the soil reaction curves that are required for the method, following...conference paper 2019
- document
-
Kementzetzidis, E. (author)At the end of 2019, the European Union (EU) put forward the European Green Deal to facilitate the technological progress necessary to achieve CO2-neutrality by 2050. Such a monumental achievement would require massive investments in infrastructure for the harvesting, storage and the transnational transportation of green energy. To date, the more...doctoral thesis 2023
- document
-
Versteijlen, W.G. (author)Offshore wind generated electricity is currently one of the most promising sources of energy to contribute in creating a sustainable global energy mix. The latter is essential for minimising the detrimental impact of human-induced accelerated climate change. The cost of offshore wind power has strongly decreased over the past years due to ...doctoral thesis 2018
- document
-
Tsetas, A. (author)The ambitious goals towards the decarbonization of the global energy sector have amplified the demand for renewable energy resources. Amongst the renewables, offshore wind possesses a pivotal role in this endeavour, showcasing remarkable growth in recent years. However, this rapid expansion has been accompanied by a series of technical...doctoral thesis 2023
- document
-
Li, Q. (author)Although wind energy capacity has increased significantly in the last few decades, the installed capacity of offshore wind turbine still lags far behind that of onshore wind turbines due to the installation and foundation cost. The aim of this research project has been to clarify the influence of combined vertical and lateral loads, lateral...doctoral thesis 2020
- document
-
Liu, H. (author)The wind energy industry has gained a key role in the global fight against greenhouse gas emissions. Although fossil fuels have still the largest share in the global energy mix, the production of wind energy, especially offshore, has rapidly grown since the 1990s. According to the International Energy Association, Europe targets offshore wind to...doctoral thesis 2020