A REVIEW ON THE STUDY OF CABLE STAYED BRIDGES (original) (raw)
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A Study on Cable-Stayed Bridges
Cable-stayed bridges can be recognized as a suitable solution for connecting wide-span crossings. More than 600 cable bridges are constructed in the world till now while this process is in progress and this number is increasing. The span of cable bridges is between 100m to 500m wide usually while length of widest cable bridges has increased up to 1000m during this decade. Construction of such bridges still is so profitable and according to this point studying these bridges seems so important. Cable-stayed bridges are studied from many aspects such as number of spans, number of towers, number of cables and girder types. Among this process, this paper has gathered more than 100 cable stayed bridges around the world in a table and has assessed them based on different parameters and has categorized these bridges in 3 categories of harp, fan and radial. This categorizing has been based on a relationship between the pattern of cables and the width of spans. Fundamentals of this categorizing have been defined in the first step of this paper. In continue the results have been represented. At the end the relationship between the width of span of these bridges and the category will be analyzed and the final conclusion will be presented.
MATEC Web of Conferences, 2017
An aeroelastic interaction always take places in long-span bridge, i.e. the dynamic relationship between wind forces (aerodynamic) and bridge structural motion (dynamics). Wind forces may lead to serviceability and safety problems, and may even cause instability of the whole bridge structure due to the flexibility nature of long span bridge structures.The slimer girder plate will make the structure more unstable as can be seen from the occurrence of lateral deformation. This paper presents the results analysis of cable stayed bridge that has total span of 640 m, two planes configuration of harp-typed hanger cable, the A shape pylons span along 320 m (main span),and side span of 160m.Structural analysis was conducted to determine the optimum ratio between width and spans of cable stayed bridge. The bridge was modeled with various width of 7 to 22 m. Structural modelling was conducted using SAP2000 software to analyze the structural stability of cable stayed bridge under wind load at speed of 35 m/s.The influence of wind loads to the cable stayed bridge stability can be seen based on the bridge deck deformation at the Y-axis (U 2), in which for the width of the bridge deck of 7 m, 8 m, 9 m and 10 m, the deformation of U2 are 0.26 m; 0.17 m; 0.12 m and 0.10 m, respectively. Meanwhile, for bridge's width of 11-22 m, the value of U2 axis deformation is relatively constant between 0.08 m to 0.07 m. This finding suggests that the ratio between width and length of bridge greatly affect the stability of the cable stayed bridge. Cable-stayed bridge, especially for concrete bridge, with two plain system having optimum ratio of width and length show no sign of an aerodynamic instability when fulfills the requirements of B ≥ L / 3.
CONCEIVING OF CABLE-STAYED BRIDGES
Bridge and Structural Engineer, 2022
The cables, deck, and pylons are the main load-bearing elements of the cable-stayed bridges. Before the beginning of modern cable-stayed bridges, several suspension bridges were built that had suspension cables, pylon, and stiffening deck as main load-bearing elements. A suspension bridge collapse at wheeling due to the wind made J A Roebling introduce inclined stays to resist the gale in his Brooklyn suspension bridge, leading the way to modern cable-stayed bridges. While narrating the evolution of the cable-stayed bridges up to the latest world-record-holding Russky Bridge in Russia, the paper attempts to provide some key information to conceive cable-stayed bridges based on literature by Fritz Leonhardt, Neils J Gimsing, Walter Podolny Jr and Michel Virloguex.
2011
Cable-stayed bridges have recently been preferred to cross middle or large size spans because of having high capacity of load-carrying, low cost, esthetic look and short building periods. As the population grows, number of vehicles and necessity of motorways for transportation grow as well. In the projects, bridges are designed containing two or three decks instead of one large deck. In this study, behavior fan shaped, harp shaped and semi-harp type cable-stayed, with double deck, bridges having the same condition of deck, tower and support were examined.
Analysis of Cable Stayed Bridge and Girder Bridge Considering Seismic Forces and I.R.C. Loading
International Journal for Research in Applied Science and Engineering Technology (IJRASET), 2022
A bridge is a structure which is built over some physical obstacles such as a body of water, valley, road and railway, its purpose is to provide crossing over that obstacle. Numerous bridges are in exist namely Arch Bridge, Girder Bridge, Suspension bridge, Cable stayed Bridge, etc. Design of bridges varies depending on the function of the bridge, the nature of the terrain where the bridge is constructed and anchored, the funds available to build it. Structural analysis is a process to analyze a structural system to predict its responses and behaviour by using physical laws and mathematical equations. The main objective of structural analysis is to determine internal forces, stresses and deformation of structure under various load effects. In the present work, Girder Bridge and Cable stayed bridge are modelled and comparative analysis is carried out for dynamically loading conditions. A comparison is made between the bridges for dead load, live load and combined load.
Structural Behaviour of Cable-stayed Bridges
2000
Cable-stayed bridges have emerged as the dominant structural system for long span bridge crossings during the past thirty years. That success is due to a combination of technical advancements and pleasing aesthetics attributes. The interaction of the various structural components results in an efficient structure which is continuously evolving and providing new methods to increase span lengths. The objective of this thesis is to describe in detail the basic structural behaviour of each of the components of cable-stayed bridges, and to present the analysis of a specific cable-stayed bridge which was proposed for the Charles River Crossing. THESIS SUPERVISOR: JEROME J. CONNOR TITLE: PROFESSOR OF CIVIL AND ENVIRONMENT ENGINEERING
STRUCTURAL DESIGN OF CABLE-STAYED BRIDGES
This thesis describes the structural behavior of cable-stayed bridges, identifies cable-stayed bridge elements, and discusses their role in supporting the structure. It presents methods of pre-sizing the stays and describes a mathematical procedure that allows optimal tensioning of forces in the stays, so that the structure complies with the design criteria.
Design and Analysis of Cable Stayed Bridge
Cable stayed bridge were firstly developed in Germany during post-world war years, due to shortage of materials like steel. With the introduction of high strength steel, orthotropic type decks, Development of welding techniques & progress in structural analysis and above mentioned shortage of steel in post-world war years the successful introduction of cable stayed bridges is possible. Cable stayed bridges were highly statically indeterminate structures and in order to find out exact solution of these highly indeterminate systems and analyse the cable stayed bridge the electronic computers played a very vital role.
Romanian Journal of Transport Infrastructure
Recent developments in the social sphere also cause an increase in transportation activities. Increased transport activities lead to the construction of new roads and bridges. Different bridge construction systems are available to overcome large span obstacles. Cable-stayed bridges are more advantageous construction systems than other bridge type building carrier systems in overcoming large spans through suspension cables. Therefore, it is also widely preferred by designers. The biggest factor in the development of cable-stayed bridges is undoubtedly steel cables. Cable-stayed bridges are bridge structures that become lighter with the increase of the span, which has a more expanded flexibility, and that includes a cable system with the effect of nonlinear factors. Costs of cable-stayed bridges vary according to different spans. The span as well as the deck material used in the bridge system have a great effect on the cost. In cable-stayed bridge systems, decks are constructed of rei...
International Journal of Engineering Research and Technology (IJERT), 2020
https://www.ijert.org/structural-analysis-and-redesign-of-a-cable-stayed-suspension-bridge-across-achankovil-river-in-kerala https://www.ijert.org/research/structural-analysis-and-redesign-of-a-cable-stayed-suspension-bridge-across-achankovil-river-in-kerala-IJERTV9IS060002.pdf This technical paper highlights the project work pertaining to the structural analysis and redesign of a suspension cabled-bridge using a computer software, STAAD.Pro ®. Various load-combinations were included in the frame analysis and worked on every aspect of the redesign. This included the design of the actual replacement of bridge deck, the effect this bridge would have on the surrounding area through an environmental impact, and the logistics associated with the construction phase. Design was done manually using relevant codes also. Drawings were done in AutoCAD ®. Such a work would enable the economic redesign of the existing suspension bridge.