Cable-Stayed Bridges

Cable-Stayed Bridges PDF Author: Holger Svensson
Publisher: John Wiley & Sons
ISBN: 3433602298
Category : Technology & Engineering
Languages : de
Pages : 458

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Book Description
The need for large-scale bridges is constantly growing due to the enormous infrastructure development around the world. Since the 1970s many of them have been cable-stayed bridges. In 1975 the largest span length was 404 m, in 1995 it increased to 856 m, and today it is 1104 m. Thus the economically efficient range of cable-stayed bridges is tending to move towards even larger spans, and cable-stayed bridges are increasingly the focus of interest worldwide. This book describes the fundamentals of design analysis, fabrication and construction, in which the author refers to 250 built examples to illustrate all aspects. International or national codes and technical regulations are referred to only as examples, such as bridges that were designed to German DIN, Eurocode, AASHTO, British Standards. The chapters on cables and erection are a major focus of this work as they represent the most important difference from other types of bridges. The examples were chosen from the bridges in which the author was personally involved, or where the consulting engineers, Leonhardt, Andrä and Partners (LAP), participated significantly. Other bridges are included for their special structural characteristics or their record span lengths. The most important design engineers are also presented. Note: The lecture videos which are attached to the print book on DVD are not part of the e-book.

Cable-Stayed Bridges

Cable-Stayed Bridges PDF Author: Holger Svensson
Publisher: John Wiley & Sons
ISBN: 3433602298
Category : Technology & Engineering
Languages : de
Pages : 458

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Book Description
The need for large-scale bridges is constantly growing due to the enormous infrastructure development around the world. Since the 1970s many of them have been cable-stayed bridges. In 1975 the largest span length was 404 m, in 1995 it increased to 856 m, and today it is 1104 m. Thus the economically efficient range of cable-stayed bridges is tending to move towards even larger spans, and cable-stayed bridges are increasingly the focus of interest worldwide. This book describes the fundamentals of design analysis, fabrication and construction, in which the author refers to 250 built examples to illustrate all aspects. International or national codes and technical regulations are referred to only as examples, such as bridges that were designed to German DIN, Eurocode, AASHTO, British Standards. The chapters on cables and erection are a major focus of this work as they represent the most important difference from other types of bridges. The examples were chosen from the bridges in which the author was personally involved, or where the consulting engineers, Leonhardt, Andrä and Partners (LAP), participated significantly. Other bridges are included for their special structural characteristics or their record span lengths. The most important design engineers are also presented. Note: The lecture videos which are attached to the print book on DVD are not part of the e-book.

Cable Vibrations in Cable-stayed Bridges

Cable Vibrations in Cable-stayed Bridges PDF Author: Elsa de Sá Caetano (autor.)
Publisher: IABSE
ISBN: 3857481153
Category : Cable-stayed bridges
Languages : en
Pages : 191

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Book Description
The present book provides a comprehensive survey on the governing phenomena of cable vibration, both associated with direct action of wind and rain: buffeting, vortex-shedding, wake effects, rain-wind vibration; and resulting from the indirect excitation through anchorage oscillation: external and parametric excitation. Methodologies for assessment of the effects of those phenomena are presented and illustrated by practical examples. Control of cable vibrations is then discussed and state-of-art results on the design of passive control devices are presented.

Cable Stayed Bridges

Cable Stayed Bridges PDF Author: Rene Walther
Publisher: Thomas Telford
ISBN: 9780727727732
Category : Technology & Engineering
Languages : en
Pages : 240

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Book Description
An examination of all aspects of the design of cable stayed bridges. Starting with a brief history, it addresses general design criteria and technology, as well as static and dynamic analysis. The illustrations provide examples of structures already built and document their critical parameters.

International Conference on Suspension, Cable Supported, and Cable Stayed Bridges

International Conference on Suspension, Cable Supported, and Cable Stayed Bridges PDF Author:
Publisher: Universities Press
ISBN: 9788173712715
Category : Cable-stayed bridges
Languages : en
Pages : 408

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Book Description


Planning and Design of Bridges

Planning and Design of Bridges PDF Author: M. S. Troitsky
Publisher: John Wiley & Sons
ISBN: 9780471028536
Category : Technology & Engineering
Languages : en
Pages : 344

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Book Description
Timely, authoritative, extremely practical--an exhaustive guide tothe nontheoretical aspects of bridge planning and design. This bookaddresses virtually all practical problems associated with theplanning and design of steel and concrete bridge superstructuresand substructures. Drawing on its author's nearly half-century as abridge designer and engineer, it offers in-depth coverage of suchcrucial considerations as selecting the optimum location andlayout, traffic flow, aesthetics, design, analysis, construction,current codes and government regulations, maintenance andrehabilitation, and much more. * Offers in-depth coverage of all the steps involved in performingproper planning and design with comparative analyses of alternativesolutions * Includes numerous examples and case studies of existing bridgesand important projects underway around the world * Features a time-line history of bridge building from pre-Romantimes to the present * Summarizes key technical data essential to bridgeengineering * Supplemented with 200 line drawings and photos vividlyillustrating all concepts presented * Comprehensive coverage of CAD planning, design, and analysistechniques and technologies

Inspection and Maintenance of Bridge Stay Cable Systems

Inspection and Maintenance of Bridge Stay Cable Systems PDF Author: Habib Tabatabai
Publisher: Transportation Research Board
ISBN: 0309097606
Category : Technology & Engineering
Languages : en
Pages : 214

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Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 353: Inspection and Maintenance of Bridge Stay Cable Systems identifies and explains various inspection and maintenance techniques for bridge stay cable systems. It discusses both short- and long-term approaches. The report information on methods for inspections and assessments, including nondestructive testing and evaluation procedures; repair and retrofit; methods for control of cable vibrations, including rainwind vibrations; stay cable fatigue and failure; effectiveness of various inspection and repair methods; limitations of available technologies; and trends and recommendations for future study.

Leonhardt cable stayed bridges keynote lecture 10th FIP congress New Delhi

Leonhardt cable stayed bridges keynote lecture 10th FIP congress New Delhi PDF Author: FIB – International Federation for Structural Concrete
Publisher: FIB - International Federation for Structural Concrete
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 29

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Book Description


Nonlinear structural design optimization of cable stayed bridges

Nonlinear structural design optimization of cable stayed bridges PDF Author: Nazim Nariman
Publisher: GRIN Verlag
ISBN: 3656550220
Category : Technology & Engineering
Languages : en
Pages : 97

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Book Description
Scientific Study from the year 2013 in the subject Engineering - Civil Engineering, grade: -, University of Weimar, course: Cable Stayed Bridges, language: English, abstract: In this research, many models of a cable stayed bridge were generated using ABAQUS finite element commercial software for the purpose of proceeding with nonlinear design optimization on the shape and topology of the structure. The cable stayed bridge models in all cases are with a constant length and width for the deck, also the pylons height under and above the deck is constant, but the shape of stay cables arrangement varies to three main famous arrangements which are Fan, Semi harp and Harp.In addition to change in the pylons shape which are three known shapes Double out, Single Center and Single inclined out, and it is worthy to mention that in all cases of the shape optimization of the pylons , the stay cables arrangements are Fan style, andby governing computational nonlinear optimization process on the finite element models in all cases of shape and topology optimization through using static general step for analysis and a certain meshing type with global seeding size for the Beam elements, with a fixed and pinned boundary conditions for the deck supports and fixed boundary for the pylons.Concentrated static loads assigned on the same positions on the deck for all models cases. A numerical optimization and graphical simulation of the results were used to determine many responsesin the model cases which areReactions, Deflections and Mises stresses in the structural models of the cable stayed bridge, especially at the deck, pylons and the stay cables which are the main components of the structure, also the same step in the deck and pylons supportshas been done for optimization outputs. It is apparent and clear that the cable stayed model with the Fan arrangement of the stay cables showed efficiency and the best topological model case for the structural design optimization that involved a safe, robust, rigid, and safe for the design of cable stayed bridges. The pylon shape with double out case was the best design situation compared with the other two models single center and single inclined out shapes, this point was obvious in the reactions, deflections and Mises stresses for the deck supports and the deck itself, and as a result the Double out with a Fan shape arrangement of the cable stays is the best model for the design of cable stayed bridges to resist the static loads.

Cable-stayed Bridges

Cable-stayed Bridges PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 6

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Book Description


Vibration and Mode Shapes Analysis of Cable Stayed Bridges Considering Different Structural Parameters

Vibration and Mode Shapes Analysis of Cable Stayed Bridges Considering Different Structural Parameters PDF Author: Nazim Nariman
Publisher: GRIN Verlag
ISBN: 3656588791
Category : Technology & Engineering
Languages : en
Pages : 36

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Book Description
Research Paper (postgraduate) from the year 2014 in the subject Engineering - Civil Engineering, grade: unknown, University of Weimar, language: English, abstract: The vibration characteristic of a cable stayed bridges structure is the main axis of the study in this paper, many structural parameters are used to simulate and determine the effect of vibration on the structural performance by identifying the natural frequencies of the system and the mode shapes that can occur in the real structure. Modeling the stay cables with three famous styles of arrangements such as Harp, Semi Harp and Fan styles, and assigning roller, hinged and fixed boundary conditions on the deck support of the cable stayed bridge, in addition to using two design cases of the girders and pylons dimensions in the global structure for that purpose. Through the use of ABAQUS finite element analysis, the models were generated for each mentioned cases and the results of the frequency linear perturbation step of 10 mode shapes were determined through the simulation of the deformed shapes and the determined values of the natural frequencies of each mode for each case of interest. It was seen that the roller boundary condition was much prone to the early vibration and the stay cables of the direction near to the roller support were vibrated and stressed much more than the other direction compared with the hinged and fixed boundary conditions, and the mode shapes 7, 8, 9 and 10 were the most vibrated cases for all the boundary conditions without any distinction. The week design of the girders and the pylons has the great effect on the vibration of the stay cables, pylons and deck of the structure especially near the roller support direction due to the early vibration of the case of roller support, so the use of cross ties and damping between the stay cables and the girders are very important in the cases of significant vibrations which affect the performance of the cable stayed bridges.