Download or read book Aerodynamics of Large Bridges written by Allan Larsen and published by Routledge. This book was released on 2017-10-19 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: As bridges spans get longer, lighter and more slender, aerodynamic loads become a matter of serious study. This volume of proceedings reflect the co-operation between civil and mechanical engineering and meteorology in this field.
Download or read book Aerodynamics of Large Bridges written by Allan Larsen and published by . This book was released on 1992 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theory of Bridge Aerodynamics written by Einar Strømmen and published by Springer Science & Business Media. This book was released on 2010-07-15 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this second edition a new chapter has been added covering the buffeting theory in a finite element format. The motivation for this has been that a finite element format is becoming more and more dominant in all areas of structural mechanics. It is streamlined for computer programming, and it facilitates the use of general purpose routines that are applicable in several types of structural engineering problems. In this book the finite element formulation of the problem of dynamic response calculations follows the general principle of virtual work, a general principle which may be found in many other text books. While the buffeting wind load itself has with no trouble been included in a finite element format, the main challenge has been to obtain a consistent formulation that includes all the relevant motion induced forces. This has been important, because, while many structures (e.g. long-span suspension bridges) may suffer greatly and become unstable at high wind velocities, the same structures may also benefit from these effects at the design wind velocity. It is well known that motion induced forces will change the stiffness and damping properties of the combined structure and flow system. If calculations are performed for a suitably close set of increasing mean wind velocities and the changing mechanical properties (stiffness and damping) are updated from one velocity to the next, then the response of the system may be followed up to wind velocities close to the stability limit, i.e. up to response values that are perceived as unduly large. Finite element calculations may be performed in time domain, in frequency domain or converted into a modal format. All these options have been included. Pursuing a time domain solution strategy requires the use of the so-called indicial functions. The theory behind such a formulation is also covered, and the determination of these functions from aerodynamic derivatives has been included in a separate appendix.
Download or read book Cable Supported Bridges written by Niels J. Gimsing and published by John Wiley & Sons. This book was released on 2011-12-30 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fourteen years on from its last edition, Cable Supported Bridges: Concept and Design, Third Edition, has been significantly updated with new material and brand new imagery throughout. Since the appearance of the second edition, the focus on the dynamic response of cable supported bridges has increased, and this development is recognised with two new chapters, covering bridge aerodynamics and other dynamic topics such as pedestrian-induced vibrations and bridge monitoring. This book concentrates on the synthesis of cable supported bridges, suspension as well as cable stayed, covering both design and construction aspects. The emphasis is on the conceptual design phase where the main features of the bridge will be determined. Based on comparative analyses with relatively simple mathematical expressions, the different structural forms are quantified and preliminary optimization demonstrated. This provides a first estimate on dimensions of the main load carrying elements to give in an initial input for mathematical computer models used in the detailed design phase. Key features: Describes evolution and trends within the design and construction of cable supported bridges Describes the response of structures to dynamic actions that have attracted growing attention in recent years Highlights features of the different structural components and their interaction in the entire structural system Presents simple mathematical expressions to give a first estimate on dimensions of the load carrying elements to be used in an initial computer input This comprehensive coverage of the design and construction of cable supported bridges provides an invaluable, tried and tested resource for academics and engineers.
Download or read book Long Span Bridges and Aerodynamics written by Toshio Miyata and published by Springer. This book was released on 1999-07 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: The completion of the Akashi Kaikyo Bridge connecting the Japanese islands of Honshu and Shikoku is a milestone in the history of bridge engineering and wind-resistant design. With a main span of 1900 meters, it is the longest suspension bridge in the world. As the April 1998 inauguration of the Akashi Kaikyo Bridge approached, the International Seminar on Long-Span Bridge Aerodynamics Perspective 8 was held in Kobe, Japan, where engineers and researchers from Japan and Europe met to discuss the next generation of long-span bridges and their aerodynamics. In the seminar's papers compiled in this volume, a major topic is long-span bridge projects, including perspectives from Europe and the East Asia, a discussion of high-strength, high-performance steels, and a look at the challenges of the future. A second major topic is structural and aerodynamic design, including technical details of the wind-resistant design of the Akashi Kaikyo Bridge and other long-span bridges in the world.
Download or read book Wind Effects on Cable Supported Bridges written by You-Lin Xu and published by John Wiley & Sons. This book was released on 2013-03-07 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: As an in-depth guide to understanding wind effects on cable-supported bridges, this book uses analytical, numerical and experimental methods to give readers a fundamental and practical understanding of the subject matter. It is structured to systemically move from introductory areas through to advanced topics currently being developed from research work. The author concludes with the application of the theory covered to real-world examples, enabling readers to apply their knowledge. The author provides background material, covering areas such as wind climate, cable-supported bridges, wind-induced damage, and the history of bridge wind engineering. Wind characteristics in atmospheric boundary layer, mean wind load and aerostatic instability, wind-induced vibration and aerodynamic instability, and wind tunnel testing are then described as the fundamentals of the subject. State-of-the-art contributions include rain-wind-induced cable vibration, wind-vehicle-bridge interaction, wind-induced vibration control, wind and structural health monitoring, fatigue analysis, reliability analysis, typhoon wind simulation, non-stationary and nonlinear buffeting response. Lastly, the theory is applied to the actual long-span cable-supported bridges. Structured in an easy-to-follow way, covering the topic from the fundamentals right through to the state-of-the-art Describes advanced topics such as wind and structural health monitoring and non-stationary and nonlinear buffeting response Gives a comprehensive description of various methods including CFD simulations of bridge and vehicle loading Uses two projects with which the author has worked extensively, Stonecutters cable-stayed bridge and Tsing Ma suspension bridge, as worked examples, giving readers a practical understanding
Download or read book Physical Models written by Bill Addis and published by John Wiley & Sons. This book was released on 2020-09-25 with total page 1114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physical models have been, and continue to be used by engineers when faced with unprecedented challenges, when engineering science has been non-existent or inadequate, and in any other situation when the engineer has needed to raise their confidence in a design proposal to a sufficient level to begin construction. For this reason, models have mostly been used by designers and constructors of highly innovative projects, when previous experience has not been available. The book covers the history of using of physical models in the design and development of civil and building engineering projects including bridges in the mid-18th century, William Fairbairn?s Britannia bridge in the 1840s, the masonry Aswan Dam in the 1890s, concrete dams in the 1920s, thin concrete shell roofs and the dynamic behaviour of tall buildings in earthquakes from the 1930s, tidal flow in estuaries and the acoustics of concert halls from the 1950s, and cable-net and membrane structures in the 1960s. Traditionally, progress in engineering has been attributed to the creation and use of engineering science, the understanding materials properties and the development of new construction methods. The book argues that the use of reduced scale models have played an equally important part in the development of civil and building engineering. However, like the history of engineering design itself, this crucial contribution has not been widely reported or celebrated. The book concludes with reviews of the current use of physical models alongside computer models, for example, in boundary layer wind tunnels, room acoustics, seismic engineering, hydrology, and air flow in buildings.
Download or read book Wind Loading of Structures written by John D. Holmes and published by CRC Press. This book was released on 2007-04-17 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridging the gap between wind and structural engineering, Wind Loading of Structures demonstrates the application of wind engineering principles to ensure maximum safety in a variety of structures. This book will assist the practising engineer in understanding the principles of wind engineering, and provide guidance on the successful design of structures for wind loading by gales, hurricanes, typhoons, thunderstorm downdrafts and tornados. The principles of meteorology, statistics and probability, aerodynamics and structural dynamics are covered in the first half of the book. The second half describes, qualitatively and quantitatively, the nature of wind loads on all types of structures, including low-rise and tall buildings, large stadium roofs, towers and chimneys, bridges, transmission lines, free-standing walls and roofs, and antennae. Special features include coverage of extreme winds in tropical and sub-tropical climates, wind-tunnel testing techniques, a summary of the wind climates of over sixty countries, and detailed coverage of internal as well as external wind pressures on buildings. A comparison is made of the provisions for wind loads in six major national and international codes and standards. Examples and case studies are given in each chapter that make the book suitable for supporting university graduate courses in wind loading and response.
Download or read book Bridge Aeroelasticity written by J. A. Jurado and published by WIT Press. This book was released on 2011 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to the study of an aeroelastic phenomenon of cable supported long span bridges known as flutter, and proposes very innovative design methodologies, such as sensitivity analysis and optimization techniques, already utilized successfully in automobile and aerospace industries. The topic of long-span suspension and cable-stayed bridges is currently of great importance. These types of bridge pose great technical difficulties due to their slenderness and often great dimension. Therefore, these bridges tend to have problems caused by natural forces such as wind loads, some of which we have witnessed in our history, and we are currently seeing a very high incidence of bridge construction to overcome geographical obstacles such as bays, straits, or great estuaries. Therefore, it seems very appropriate to write a book showing the current capability of analysis and design, when up until now, the information could only be found partially in technical articles. This book will be useful for bridge design engineers as well as researchers working in the field. This book only requires previous knowledge of structural finite element models and dynamics, and it is advisable to have some previous knowledge in bridge engineering. Nevertheless, this book is very self-contained in such a way that all the information necessary to understand the theoretical developments is presented without the need of additional bibliography.
Download or read book International Conference on Suspension Cable Supported and Cable Stayed Bridges written by and published by Universities Press. This book was released on 2000 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aeroelastic Phenomena and Pedestrian structure Dynamic Interaction on Non conventional Bridges and Footbridges written by Claudio Borri and published by Firenze University Press. This book was released on 2010 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluid-structure and pedestrian-structure interaction phenomena are extremely important for non-conventional bridges. The results presented in this volume concern: simplified formulas for flutter assessment; innovative structural solutions to increase the aeroelastic stability of long-span bridges; numerical simulations of the flow around a benchmark rectangular cylinder; examples of designs of large structures assisted by wind-tunnel tests; analytical, computational and experimental investigation of the synchronisation mechanisms between pedestrians and footbridge structures. The present book is addressed to a wide audience including professionals, doctoral students and researchers, aiming to increase their know-how in the field of wind engineering, bluff-body aerodynamics and bridge dynamics.
Download or read book The Aerodynamics of Long Span Bridges written by John Peter Charles King and published by . This book was released on 2003 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Turbulence on the Aerodynamics of Long span Bridges written by Frederick Louis Haan and published by . This book was released on 2000 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Bridge Deck Aerodynamics Investigation written by C. Marni and published by . This book was released on 2024-01-15 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical Bridge Deck Aerodynamics Investigation" is a comprehensive and insightful book that focuses on the study of aerodynamics specifically related to bridge decks through numerical analysis. Written by experts in the field, this book presents an in-depth exploration of the complex interactions between bridge decks and the surrounding wind flow, utilizing advanced computational techniques. The book begins by establishing a strong foundation in the fundamental principles of aerodynamics and bridge engineering. It then delves into the numerical methods and simulation models employed to accurately predict and analyze the aerodynamic behavior of bridge decks under various wind conditions. The authors present in detailed with simulations, providing practical insights into the flow patterns, wind pressures, and structural responses experienced by bridge decks. Throughout the book, the authors highlight the significance of accurate aerodynamic analysis in the design and maintenance of bridges, emphasizing the importance of considering aerodynamic loads to ensure structural safety and serviceability. They discuss various factors influencing the aerodynamic performance of bridge decks, such as bridge geometry, wind direction, wind turbulence, and wind-induced vibrations. This book serves as an invaluable resource for researchers, engineers, and professionals involved in bridge design, construction, and maintenance. By employing numerical techniques, the book offers a systematic approach to evaluating and optimizing the aerodynamic performance of bridge decks, leading to more efficient and reliable bridge designs. It bridges the gap between theory and practice, offering practical guidance and solutions for mitigating the potential risks associated with wind effects on bridges.
Download or read book Bridge Aerodynamics written by Allan Larsen and published by Taylor & Francis. This book was released on 1998 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the May 1998 Symposium. Twenty-five contributions present state-of-the-art and future development trends in optimization, bridge aerodynamics and ship collision analysis, and operation and maintenance. Topics include probabilistic methods, aeroelastic analysis, cable dynamics, cross wind on vehicles, and numerical methods. Contains an author index but no subject index. Annotation copyrighted by Book News, Inc., Portland, OR
Download or read book Report on the Aerodynamic Stability of the Mackinac Bridge written by David Barnard Steinman and published by . This book was released on 1955 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Numerical Techniques for Dynamic and Aerodynamic Analysis of Bridges written by Hamidreza Naderian and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: To meet the economic, social and infrastructure needs of the community for safe and efficient transportation systems, long span bridges have been built throughout the world. Long span bridges are one of the most challenging kinds of structures in civil engineering. The cable-stayed bridges are of great interest mainly as an alternative and a more economic solution than the one of suspension bridges. In addition, the fiber reinforced polymer (FRP) composites are, nowadays, successfully used for constructing modern bridges, where the significant weight saving provides additional benefits. Because of the great flexibility, modern long-span cable-stayed bridges are usually very susceptible to dynamic loads especially to the earthquake and strong winds. Therefore, the earthquake-resistant and wind-resistant designs become one of key issues for successful construction of bridges. The objective of the present research is to develop a very efficient spline finite strip technique, for modelling and analysis of both conventional and hybrid FRP cable-stayed bridges. The study falls into the categories of bending, free vibration, seismic, and aerodynamic flutter analysis. The spline finite strip method (SFSM) is one of the most efficient numerical methods for structural analysis of bridges, reducing the time required for estimating the structural response without affecting the degree of accuracy. In the finite strip method, the degrees of freedom could be significantly reduced due to the semi-analytical nature of this method. However, the previous versions of SFSM are not able to model the entire bridge system. For that reason, the structural interactions between different structural components of the bridge could not be handled. In addition, the vibrations and displacements of the towers and cables could not be investigated. In the present formulation, all these obstacles have been eliminated. Moreover, the proposed finite strip technique is very efficient and accurate due to the drastic reduction in the formulation time, simplicity of data preparation, rapid rate convergence of the results, and the semi-analytical nature. Last but not least, and for the first time, a fully finite strip solution is extended to the area of wind engineering. Using the spline finite strip discretization, the aerodynamic stiffness and mass properties of the long-span cable-stayed bridge are derived. The aerodynamic properties along with the structural properties of long-span plates and bridges are formulated in the aerodynamic equation of motion and are used to analyze the flutter problem. The accuracy and efficiency of the proposed advanced finite strip method is verified against the finite element and field measurement results. The results demonstrate that this methodology and the associated computer code can accurately predict the dynamic and aerodynamic responses of the conventional and FRP long-span cable-stayed bridge systems. The outcome of the present research will lead to a comprehensive structural analysis of bridges in the framework of the proposed discretization which is more efficient and straightforward than the finite element analysis.