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Concrete Structures for Wind Turbines.
The wind energy industry in Germany has an excellent global standing when it comes to the development and construction of wind turbines. Germany currently represents the world's largest market for wind energy. The ongoing development of ever more powerful wind turbines plus additional requireme...
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Otros Autores: | , , , |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Hoboken :
Wiley,
2013.
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| Colección: | Beton-Kalender series.
|
| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Concrete Structures for Wind Turbines; Contents; Editorial; 1 Introduction; 2 Actions on wind turbines; 2.1 Permanent actions; 2.2 Turbine operation (rotor and nacelle); 2.3 Wind loads; 2.3.1 Wind loads for onshore wind turbines; 2.3.1.1 Wind loads according to the DIBt guideline; 2.3.1.2 Checking the susceptibility to vibration; 2.3.1.3 Example of application; 2.3.2 Wind loads for offshore wind turbines; 2.3.2.1 Classification of wind turbines; 2.3.2.2 Determining the wind conditions (wind climate); 2.3.2.3 Normal wind conditions; 2.3.2.4 Extreme wind conditions; 2.3.2.5 Wind farm influence.
- 2.4 Height of sea level2.5 Hydrodynamic environmental conditions; 2.5.1 Sea currents; 2.5.2 Natural sea state; 2.5.3 Harmonic primary wave; 2.5.4 Waves of finite steepness; 2.5.5 Statistical description of the sea state; 2.5.6 Short-term statistics for the sea state; 2.5.7 Long-term statistics for the sea state; 2.5.8 Extreme sea state values; 2.5.9 Breaking waves; 2.6 Hydrodynamic analysis; 2.6.1 General; 2.6.2 Morison formula; 2.6.3 Potential theory method
- linear motion behaviour; 2.6.4 Integral equation method (singularity method); 2.6.5 Vertical cylinders (MacCamy and Fuchs).
- 2.6.6 Higher-order potential theory2.6.7 Wave loads on large-volume offshore structures; 2.7 Thermal actions; 2.8 Sea ice; 2.9 Icing-up of structural members; 3 Non-linear material behaviour; 3.1 General; 3.2 Material laws for reinforced and prestressed concrete; 3.2.1 Non-linear stress-strain curve for concrete; 3.2.2 Non-linear stress-strain curve for reinforcing steel; 3.2.3 Non-linear stress-strain curve for prestressing steel; 3.3 Bending moment-curvature relationships; 3.3.1 Reinforced concrete cross-sections in general; 3.3.2 Prestressed concrete cross-sections in general.
- 3.3.3 Annular reinforced concrete cross-sections3.4 Deformations and bending moments according to second-order theory; 3.5 Design of cross-section for ultimate limit state; 3.5.1 Material resistance of concrete; 3.5.2 Material resistance of reinforcement; 3.6 Three-dimensional mechanical models for concrete; 3.6.1 Failure envelopes and stress invariants; 3.6.2 Common failure models for concrete; 3.6.3 Three-phase model; 3.6.4 Constitutive models; 4 Loadbearing structures and detailed design; 4.1 Basis for design; 4.2 Structural model for tower shaft; 4.2.1 Rotation of the foundation.
- 4.2.2 Stability of towers on soft subsoils4.3 Investigating vibrations; 4.3.1 Mass-spring systems with single/multiple degrees of freedom; 4.3.2 The energy method; 4.3.2.1 Practical vibration analysis; 4.3.2.2 Example of application; 4.3.3 Natural frequency analysis of loadbearing structure; 4.4 Prestressing; 4.4.1.1 Prestressing with grouted post-tensioned tendons; 4.4.1.2 External prestressing with unbonded tendons; 4.5 Design of onshore wind turbine support structures; 4.5.1 Total dynamic analysis; 4.5.2 Simplified analysis; 4.5.2.1 Sensitivity to vibration; 4.5.2.2 Vibration damping.