EJ
E.P. Jongkees
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The demand of offshore wind energy has increased enormously in the last decade, and continues to do so in the foreseeable future. The monopile will remain the most important foundation structure. There is however not yet a durable solution for its main disadvantage; the under water sound radiation during installation. In this report a new, silent installation method is therefore explored: screwing monopile into the ground. In this thesis the interaction between the monopile and soil is explored, along with the addition of a screw thread. Based on this the driving requirements are determined. Then a possible driving mechanism is shown, considering the driving power, connection between the ship and the monopile and driving equipment. Lastly, the implications of the logistics is explored.
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The demand of offshore wind energy has increased enormously in the last decade, and continues to do so in the foreseeable future. The monopile will remain the most important foundation structure. There is however not yet a durable solution for its main disadvantage; the under water sound radiation during installation. In this report a new, silent installation method is therefore explored: screwing monopile into the ground. In this thesis the interaction between the monopile and soil is explored, along with the addition of a screw thread. Based on this the driving requirements are determined. Then a possible driving mechanism is shown, considering the driving power, connection between the ship and the monopile and driving equipment. Lastly, the implications of the logistics is explored.