الفهرس 
Literature Review of Cable Stayed BridgeOnly 14 pages are availabe for public view
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Abstract
Cable-stayed bridges are structural systems effectively composing cables, main girders and towers constructed along a structural system which comprises an orthotropic deck and continuous girders supported by stays, i.e. inclined cables passing over or attached to towers located at the main piers.
The research problem: Investigate static and dynamic analysis of a new configuration of cable stayed bridges. The new configuration is using triple levels of cables attachments with pylon instead of double.
And then the research aims: Get the best mathematical model to carry out the static and dynamic analysis by using a technique for the choice of the best initial tension in cables depending on an iterative scheme to give the minimum responses ,this technique is termed ’’ cycle of solution”. Execution static analysis considering the total dead weight and traffic load as uniformly distributed along all span lengths and fluctuating wind state loads for dynamic analysis of a new configuration of cable stayed bridges.
Steps of study: The static analysis starts with studying the factors that affect the responses of cable stayed bridges. These factors were the pylon height relative to the distance between the two pylons (H/L) and variations of initial tensions in the cables. Using the best initial tension in cables depending on an iterative scheme to give the minimum static responses. Investigate the influence of connection types between pylons and floor beams. The dynamic analysis considering fluctuating wind state loads in the longitudinal direction of the bridges for the best configuration deduced from the previous static analysis are carried out.
The study concludes: Based on the present study and obtained results, the following conclusions may be drawn; To get up the minimum deflection, it is required to increasing the pylon height relative to the distance between the two pylons (H/L) ratio up to 0.3 then the effect of initial tension can be taken in second category. Using optimum outcome response shape technique gave a significant reduction in deflection of floor beam from75 to 85% and from 70 to 80% in bending moment along floor beams. The dynamic response (displacements) oscillates about mean constant values with decreasing amplitudes towards these values, which could be considered as equivalent static displacement.