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Design and Calculus of the Foundation Structure of an Offshore Monopile Wind Turbine

Design and Calculus of the Foundation Structure of an Offshore Monopile Wind Turbine. Author : Carlos Garcés García Directed by : Julio García Espinosa. Contents. Introduction Wind Turbine Emplacement Loads Grout Connection Transition Piece Monopile Foundation Loads Analysis

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Design and Calculus of the Foundation Structure of an Offshore Monopile Wind Turbine

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  1. Design and Calculus of the Foundation Structure of an Offshore Monopile Wind Turbine Author: Carlos Garcés García Directedby: Julio García Espinosa

  2. Contents • Introduction • Wind Turbine • Emplacement • Loads • GroutConnection • TransitionPiece • Monopile • Foundation • LoadsAnalysis • Conclusions

  3. Monopile • A Monopile? • ItsParts • The Pile • TheGrout • TheTransitionPiece • Function

  4. The Offshore Wind Turbine NREL 5MW WindTurbine

  5. Emplacement • Localisation: 39º 15’N, 74º 15’W • AverageWindSpeed: 6,38 m/s • DistancetoCoast: 28 km • Depth: 20m • Soil: UnconsolidatedSand • Weather Extremes: ExtratropicalStorms

  6. Loads • Waves • Wind

  7. WindForceCalculus • Onthe Rotor OperatingConditions Stoped Rotor Conditions • OntheTower • NREL FAST-AeroDynSoft

  8. WavesForceCalculus • Morison’sEquation InertiaCoefficientDragCoefficient • WaterPressure

  9. Monopile Virtual Model

  10. SeaFEMAnalysis • Wave Amplitud: 8,4 m • Wave Period: 5,55 s

  11. Dimensions

  12. Materials

  13. BoundaryConditions • Foundation: Linear Soil Spring • Vertical Constrain at Pile’s Bottom Tip • Wind loads • Wave loads from SeaFEM • Self Weight

  14. MaximalStresses

  15. Conclusions • Objectives Accomplished • Calculus Complexity • Feasible Construction • Necessary Informatic Tools • Considerations • Environmental Degradation • Economical Feasability • Protection Against Corrosion

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