Design of Foundations for Offshore Wind Turbines.
- 1st ed.
- 1 online resource (495 pages)
Intro -- Table of Contents -- Preface -- About the Companion Website -- 1 Overview of a Wind Farm and Wind Turbine Structure -- 1.1 Harvesting Wind Energy -- 1.2 Current Scenario -- 1.3 Components of Wind Turbine Installation -- 1.4 Control Actions of Wind Turbine and Other Details -- 1.5 Foundation Types -- 1.6 Foundations in the Future -- 1.7 On the Choice of Foundations for a Site -- 1.8 General Arrangement of a Wind Farm -- 1.9 General Consideration for Site Selection -- 1.10 Development of Wind Farms and the Input Required for Designing Foundations -- 1.11 Rochdale Envelope Approach to Foundation Design (United Kingdom Approach) -- 1.12 Offshore Oil and Gas Fixed Platform and Offshore Wind Turbine Structure -- 1.13 Chapter Summary and Learning Points -- 2 Loads on the Foundations -- 2.1 Dynamic Sensitivity of Offshore Wind Turbine Structures -- 2.2 Target Natural Frequency of a Wind Turbine Structure -- 2.3 Construction of Wind Spectrum -- 2.4 Construction of Wave Spectrum -- 2.5 Load Transfer from Superstructure to the Foundation -- 2.6 Estimation of Loads on a Monopile‐Supported Wind Turbine Structure -- 2.7 Order of Magnitude Calculations of Loads -- 2.8 Target Natural Frequency for Heavier and Higher‐Rated Turbines -- 2.9 Current Loads -- 2.10 Other Loads -- 2.11 Earthquake Loads -- 2.12 Chapter Summary and Learning Points -- 3 Considerations for Foundation Design and the Necessary Calculations -- 3.1 Introduction -- 3.2 Modes of Vibrations of Wind Turbine Structures -- 3.3 Effect of Resonance: A Study of an Equivalent Problem -- 3.4 Allowable Rotation and Deflection of a Wind Turbine Structure -- 3.5 Internationals Standards and Codes of Practices -- 3.6 Definition of Limit States -- 3.7 Other Design Considerations Affecting the Limit States -- 3.8 Grouted Connection Considerations for Monopile Type Foundations. 3.9 Design Consideration for Jacket‐Supported Foundations -- 3.10 Design Considerations for Floating Turbines -- 3.11 Seismic Design -- 3.12 Installation, Decommission, and Robustness -- 3.13 Chapter Summary and Learning Points -- 4 Geotechnical Site Investigation and Soil Behaviour under Cyclic Loading -- 4.1 Introduction -- 4.2 Hazards that Needs Identification Through Site Investigation -- 4.3 Examples of Offshore Ground Profiles -- 4.4 Overview of Ground Investigation -- 4.5 Cone Penetration Test (CPT) -- 4.6 Minimum Site Investigation for Foundation Design -- 4.7 Laboratory Testing -- 4.8 Behaviour of Soils under Cyclic Loads and Advanced Soil Testing -- 4.9 Typical Soil Properties for Preliminary Design -- 4.10 Case Study: Extreme Wind and Wave Loading Condition in Chinese Waters -- 5 Soil-Structure Interaction (SSI) -- 5.1 Soil-Structure Interaction (SSI) for Offshore Wind Turbines -- 5.2 Field Observations of SSI and Lessons from Small‐Scale Laboratory Tests -- 5.3 Ultimate Limit State (ULS) Calculation Methods -- 5.4 Methods of Analysis for SLS, Natural Frequency Estimate, and FLS -- 5.5 Long‐Term Performance Prediction for Monopile Foundations -- 5.6 Estimating the Number of Cycles of Loading over the Lifetime -- 5.7 Methodologies for Long‐Term Rotation Estimation -- 5.8 Theory for Estimating Natural Frequency of the Whole System -- Chapter Summary and Learning Points -- 6 Simplified Hand Calculations -- 6.1 Flow Chart of a Typical Design Process -- 6.2 Target Frequency Estimation -- 6.3 Stiffness of a Monopile and Its Application -- 6.4 Stiffness of a Mono‐Suction Caisson -- 6.5 Mudline Moment Spectra for Monopile Supported Wind Turbine -- 6.6 Example for Monopile Design -- Appendix A: Natural Frequency of a Cantilever Beam with Variable Cross Section -- Appendix B: Euler‐Bernoulli Beam Equation -- Appendix C: Tower Idealisation. Appendix D: Guidance on Estimating the Vertical Stiffness of Foundations -- Appendix E: Lateral Stiffness KL of Piles -- Appendix F: Lateral Stiffness KL of Suction Caissons -- Bibliography -- Index -- End User License Agreement.
9781119128144
Offshore wind power plants-Design and construction.