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 requirements for the design and construction of their offshore foundation structures exceeds the actual experiences gained so far in the various disciplines concerned.
This book gives a comprehensive overview for planning and structural design analysis of reinforced concrete and pre-stressed concrete wind turbine towers for both, onshore and offshore wind turbines. Wind turbines represent structures subjected to highly dynamic loading patterns. Therefore, for the design of loadbearing structures, fatigue effects - and not just maximum loads - are extremely important, in particular in the connections and joints of concrete and hybrid structures. There multi-axial stress conditions occure which so far are not covered by the design codes. The specific actions, the nonlinear behaviour and modeling for the structural analysis are explained. Design and verification with a focus on fatigue are adressed. The chapter Manufacturing includes hybrid structures, segmental construction of pre-stressed concrete towers and offshore wind turbine foundations.

Selected chapters from the German concrete yearbook are now being published in the new English "Beton-Kalender Series" for the benefit of an international audience.
Since it was founded in 1906, the Ernst & Sohn "Beton-Kalender" has been supporting developments in reinforced and prestressed concrete. The aim was to publish a yearbook to reflect progress in "ferro-concrete" structures until - as the book's first editor, Fritz von Emperger (1862-1942), expressed it - the "tempestuous development" in this form of construction came to an end. However, the "Beton-Kalender" quickly became the chosen work of reference for civil and structural engineers, and apart from the years 1945-1950 has been published annually ever since.
1144497670
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 requirements for the design and construction of their offshore foundation structures exceeds the actual experiences gained so far in the various disciplines concerned.
This book gives a comprehensive overview for planning and structural design analysis of reinforced concrete and pre-stressed concrete wind turbine towers for both, onshore and offshore wind turbines. Wind turbines represent structures subjected to highly dynamic loading patterns. Therefore, for the design of loadbearing structures, fatigue effects - and not just maximum loads - are extremely important, in particular in the connections and joints of concrete and hybrid structures. There multi-axial stress conditions occure which so far are not covered by the design codes. The specific actions, the nonlinear behaviour and modeling for the structural analysis are explained. Design and verification with a focus on fatigue are adressed. The chapter Manufacturing includes hybrid structures, segmental construction of pre-stressed concrete towers and offshore wind turbine foundations.

Selected chapters from the German concrete yearbook are now being published in the new English "Beton-Kalender Series" for the benefit of an international audience.
Since it was founded in 1906, the Ernst & Sohn "Beton-Kalender" has been supporting developments in reinforced and prestressed concrete. The aim was to publish a yearbook to reflect progress in "ferro-concrete" structures until - as the book's first editor, Fritz von Emperger (1862-1942), expressed it - the "tempestuous development" in this form of construction came to an end. However, the "Beton-Kalender" quickly became the chosen work of reference for civil and structural engineers, and apart from the years 1945-1950 has been published annually ever since.
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Overview

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 requirements for the design and construction of their offshore foundation structures exceeds the actual experiences gained so far in the various disciplines concerned.
This book gives a comprehensive overview for planning and structural design analysis of reinforced concrete and pre-stressed concrete wind turbine towers for both, onshore and offshore wind turbines. Wind turbines represent structures subjected to highly dynamic loading patterns. Therefore, for the design of loadbearing structures, fatigue effects - and not just maximum loads - are extremely important, in particular in the connections and joints of concrete and hybrid structures. There multi-axial stress conditions occure which so far are not covered by the design codes. The specific actions, the nonlinear behaviour and modeling for the structural analysis are explained. Design and verification with a focus on fatigue are adressed. The chapter Manufacturing includes hybrid structures, segmental construction of pre-stressed concrete towers and offshore wind turbine foundations.

Selected chapters from the German concrete yearbook are now being published in the new English "Beton-Kalender Series" for the benefit of an international audience.
Since it was founded in 1906, the Ernst & Sohn "Beton-Kalender" has been supporting developments in reinforced and prestressed concrete. The aim was to publish a yearbook to reflect progress in "ferro-concrete" structures until - as the book's first editor, Fritz von Emperger (1862-1942), expressed it - the "tempestuous development" in this form of construction came to an end. However, the "Beton-Kalender" quickly became the chosen work of reference for civil and structural engineers, and apart from the years 1945-1950 has been published annually ever since.

Product Details

ISBN-13: 9783433603307
Publisher: Wiley
Publication date: 09/10/2013
Series: Beton-Kalender Series
Sold by: JOHN WILEY & SONS
Format: eBook
Pages: 242
File size: 7 MB

About the Author

Jurgen Grunberg, Univ.-Prof. Dr.-Ing., studied civil engineering at the Technical University Berlin and at the University Hannover where he gained his doctorate from. Following eight years as project manager at HOCHTIEF AG and at IMS, Ingenieurgemeinschaft Meerestechnik und Seebau, since 1983 as consulting engineer and since 1986 as test engineer for structural engineering, he became professor for concrete construction at the University Hannover in 1993. Already since 1980 he deals with design and construction of offshore structures, telecommunication towers and later on of wind turbine towers. Professor Grunberg is a member of numerous national and international expert commissions in the fields of reinforced concrete and the author of a large number of books and articles.

Joachim Gohlmann, Dr.-Ing., studied structural engineering at the Leibniz University Hannover where he completed his doctorate with the doctorate thesis Damage calculation of concrete constructions for wind turbines subjected to multi-stage and multi-axial fatigue loading?.
Dr. Gohlmann has been involved with the design, manufacture and measurement of towers and foundations for wind turbines for over 13 years. Since 2010 he has been managing director at grbv Ingenieure im Bauwesen GmbH in Hannover, Germany. grbv is an independent planning and consulting company for structural design of towers and support structures for on- and offshore wind farms.



Univ.-Prof. Dr.-Ing.Jürgen Grünberg studierte Bauingenieurwesen an der TU Berlin und an der Leibniz Universität Hannover, wo er später promovierte. Nach acht Jahren Tätigkeit als Bauleiter bei HOCHTIEF bzw. Projektleiter bei der Ingenieurgemeinschaft Meerestechnik und Seebau (IMS), ging er 1983 als Beratender Ingenieur in die Selbständigkeit. Seit 1986 ist er Prüfingenieur für Baustatik, im Jahr 1993 wurde er als Universitätsprofessur an das Institut für Massivbau an die Leibniz Universität Hannover berufen. Bereits seit 1980 beschäftigt er sich mit der Bemessung und Konstruktion von Offshore-Strukturen und von Fernmeldetürmen, später kamen Windenergieanlagen hinzu. Prof. Grünberg arbeitet in nationalen und internationalen Fachausschüssen auf dem Gebiet der Stahlbetonbauweise, er ist Autor zahlreicher Veröffentlichungen in einschlägigen Zeitschriften und Fachbüchern.
Dr.-Ing. Joachim Göhlmann studierte Bauingenieurwesen an der Leibniz Universität Hannover und promovierte 'Zur Schädigungsberechnung an Betonkonstruktionen für Windenergieanlagen unter mehrstufiger und mehraxialer Ermüdungsbeanspruchung'. Dr. Göhlmann beschäftigt sich mit Entwurf, Planung, Herstellung und Monitoring von Turmkonstruktionen einschl. Gründung für windenergieanlagen seit 2000. Seit 2010 ist er Geschäftsführer von grbv Ingenieure im Bauwesen GmbH, Hannover, die sich insbesondere der Planung und Berechnung von Turmbauwerken und Tragstrukturen für Onshore- und Offshore-WEA widmen.

Table of Contents

Introduction
Actions on wind turbine towers
- Permanent actions
- Turbine operation (rotor and nacelle)
- Wind load
- Height of sea level
- Hydrodynamic environment conditions
- Hydrodynamic analysis
- Thermal actions
- Sea ice
- Icing of construction elements
Non-linear material behaviour
- General
- Material laws for reinforced and prestressed concrete
- Bending moment-curvature relationships
- Deformations and bending moments to second-order theory
- Cross section design ultimate limit state
- Three-dimensional mechanical models for concrete
Support structure and design analysis
- Basis of calculation
- Structural model of the tower
- Vibration analysis
- Pre-stressing
- Design of onshore wind turbines
- Design of offshore wind turbines
- Ultimate limit state
- Verification of serviceability limit state
- Verification against fatigue
- Node design
- Foundation design
Manufacturing of prestressed concrete towers
- Introduction
- Hybrid structures of steel and prestressed concrete
- Segmental construction method for prestressed concrete towers
- Offshore concrete foundation
References
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