ACI ITG-9R-16 Report on Design of Concrete Wind Turbine Towers PDF Download

Author: ACI Innovation Task Group 9
Publisher:
ISBN: 9781945487354
Category :
Languages : en
Pages : 24

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Author: Jürgen Grünberg
Publisher: John Wiley & Sons
ISBN: 3433603308
Category : Technology & Engineering
Languages : en
Pages : 251

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Book Description
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.

Author:
Publisher:
ISBN: 9781904818342
Category :
Languages : en
Pages : 13

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Author: Willem Sternberg van Zyl
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659875342
Category :
Languages : en
Pages : 136

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Book Description
Exponential growth of the global wind turbine market has led to a significant increase in the capacity of wind turbine generators. Modern turbines require higher support structures as higher wind speeds combined with longer blades are necessary to increase their generating capacity. The standard 80-90 m tower is thus not economically viable anymore. Transportation logistics of large steel towers has led to concrete towers becoming a viable option. There are currently no design codes dealing exclusively with the design of concrete wind turbine towers. The aim of this project is to investigate and highlight important aspects of the design process of a normally reinforced high strength concrete wind turbine tower. The tower was designed using nonlinear finite element modelling as a design tool to accurately design the tower for various loads and load cases. An analytical design method was developed that can be used in the preliminary design stage. Finally, the importance of the soil-structure interaction was investigated through a sensitivity analysis.

Author:
Publisher:
ISBN: 9781904818489
Category :
Languages : en
Pages :

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The relative merits and viability of concrete and steel for the wind industry, with practical methods and conceptual configurations for on- and offshore facilities, design philosophies, and construction practices for concrete wind towers; considering fabrication, transportation, installation, maintenance, decommissioning, removal and disposal.

Author: Kurt Thomsen
Publisher: Academic Press
ISBN: 0124095941
Category : Technology & Engineering
Languages : en
Pages : 405

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Book Description
Offshore Wind is the first-ever roadmap to successful offshore wind installation. It provides a ready reference for wind project managers, teaching them how to deal with complications on-site, as well as for financers, who can utilize the text as an easy guide to asking the pivotal questions of petitioning wind project developers. These developers' planning stages will be improved by the book's expert advice on how to avoid wasting money by scoping out and mitigating potential problems up-front. Wind turbine manufacturers will benefit from insights into design optimization to support cheaper installation and hauling, thereby incurring lower project costs, and helping developers establish a quicker route to profitability. The book sheds light not just on how to solve a particular installation difficulty, but delves into why the problem may best be solved in that way. Enables all stakeholders to realize cheaper, faster, and safer offshore wind projects Explains the different approaches to executing on- and offshore projects, highlighting theeconomic impacts of the various financial and operational choices Provides practical, proven advice on how tough challenges can be overcome,using real-life examples from the author’s experiences to illustrate key issues

Author: Alper Ilki
Publisher: Springer Nature
ISBN: 3030881660
Category : Technology & Engineering
Languages : en
Pages : 2516

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This volume highlights the latest advances, innovations, and applications in the field of FRP composites and structures, as presented by leading international researchers and engineers at the 10th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering (CICE), held in Istanbul, Turkey on December 8-10, 2021. It covers a diverse range of topics such as All FRP structures; Bond and interfacial stresses; Concrete-filled FRP tubular members; Concrete structures reinforced or pre-stressed with FRP; Confinement; Design issues/guidelines; Durability and long-term performance; Fire, impact and blast loading; FRP as internal reinforcement; Hybrid structures of FRP and other materials; Materials and products; Seismic retrofit of structures; Strengthening of concrete, steel, masonry and timber structures; and Testing. The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster multidisciplinary collaboration among different specialists.

Author: François-Xavier Jammes
Publisher:
ISBN:
Category :
Languages : en
Pages : 146

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Book Description
Ultra-High Performance Concrete (UHPC) has proven an asset for bridge design as it significantly reduces costs. However, UHPC has not been applied yet to wind turbine technology. Design codes do not propose any recommendations or guidance for the towers, thus encouraging the engineer to use less effective traditional materials like steel. The purpose of this thesis is to propose an efficient way to design UHPC wind turbines. First is explained the strategy to retain an optimal design. Then, the comparison with a similar steel model demonstrates that UHPC is both an economical and sustainable design solution for towers. This work is based on a combination of the UHPC 1D model developed at MIT and the interim recommendations provided by Association Franqaise de Genie Civil. The expression of the design loads and the resistant loads for a UHPC circular hollow section are presented based on available design codes. Then, the optimization process based on the previous model is established. It is achieved using two programs in order to satisfy both the Service Limit State (SLS) and the Ultimate Limit State (ULS). The best design is obtained for a SLS criteria deflection of L/800. The cost of material is reduced by a factor between 2 and 3 in comparison with traditional steel. All of this confirms that UHPC could be an innovative engineering solution for the realization of new wind turbine towers.

Author: Pedro Serna
Publisher: Springer Nature
ISBN: 303083719X
Category : Technology & Engineering
Languages : en
Pages : 994

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Book Description
This volume highlights the latest advances, innovations, and applications in the field of fibre-reinforced concrete (FRC), as presented by scientists and engineers at the RILEM-fib X International Symposium on Fibre Reinforced Concrete (BEFIB), held in Valencia, Spain, on September 20-22, 2021. It discusses a diverse range of topics concerning FRC: technological aspects, nanotechnologies related with FRC, mechanical properties, long-term properties, analytical and numerical models, structural design, codes and standards, quality control, case studies, Textile-Reinforced Concrete, Geopolymers and UHPFRC. After the symposium postponement in 2020, this new volume concludes the publication of the research works and knowledge of FRC in the frame of BEFIB from 2020 to 2021 with the successful celebration of the hybrid symposium BEFIB 2021. The contributions present traditional and new ideas that will open novel research directions and foster multidisciplinary collaboration between different specialists.

Author: Paul Breeze
Publisher: Academic Press
ISBN: 0128051922
Category : Technology & Engineering
Languages : en
Pages : 105

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Book Description
Wind Power Generation is a concise, up-to-date and readable guide providing an introduction to one of the leading renewable power generation technologies. It includes detailed descriptions of on and offshore generation systems, and demystifies the relevant wind energy technology functions in practice as well as exploring the economic and environmental risk factors. Engineers, managers, policymakers and those involved in planning and delivering energy resources will find this reference a valuable guide, to help establish a reliable power supply address social and economic objectives. Focuses on the evolution and developments in wind energy generation Evaluates the economic and environmental viability of the systems with concise diagrams and accessible explanations