Design of Foundations for Offshore Wind Turbines

As the demand for "green" energy increases the offshore wind power industry is expanding at a rapid pace around the world. This book is a comprehensive reference which covers the design of foundations for offshore wind turbines, and includes examples and case studies. It provides an overvi...

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Bibliographic Details
Main Author: Bhattacharya, Subhamoy
Format: eBook
Language:English
Published: Newark John Wiley & Sons 2019
John Wiley & Sons, Incorporated
Wiley
Wiley-Blackwell
Edition:1
Subjects:
Design and construction
Marine Engineering & Naval Architecture
Offshore Construction
Offshore structures
Offshore wind power plants
ISBN:9781119128120, 1119128129
Online Access:Get full text
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Table of Contents:
  • Title Page Preface Table of Contents 1. Overview of a Wind Farm and Wind Turbine Structure 2. Loads on the Foundations 3. Considerations for Foundation Design and the Necessary Calculations 4. Geotechnical Site Investigation and Soil Behaviour under Cyclic Loading 5. Soil-Structure Interaction (SSI) 6. Simplified Hand Calculations Appendices Bibliography Index
  • 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
  • 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
  • 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