Analysis of a Suspension Bridge Considering Different Anchorages Using SAP2000

The best option for longer spans are cable stayed bridges, and it's crucial to examine their behaviour under static and vehicular pressure. The analytical results are more satisfactory and the modelling of the cable-stayed bridge is more accurate. Although there are numerous ways to create a structural model, in the current work two distinct types of structural models�the Spine Model and the Area Object Model�are utilised to analyse a cable-stayed bridge. In order to evaluate the outcomes, static analysis and moving vehicle analysis have been carried out with the application of the IRC Class A vehicle load. To determine the optimum structure model for analysis, the analysis is carried out in SAP 2000, and the analysis results are compared with tables and graphs. This research is concerned with comparative analysis of suspension bridges considering two different forms of anchoring namely suspension bridge with tunnel anchoring and suspension bridge with gravity anchoring and the modeling and analysis is conducted using analytical application SAP 2000 considering similar loading conditions. Dead load analysis of suspension bridges and cable-stayed bridges is studied while maintaining constants in the main span, side span, pylon height, bridge deck, and material qualities. The ideal suspension bridge sag, at which the lowest magnitude of deflection is obtained, is determined by analysis. Next, the diameters of the main cables are modified, and the deflection of the bridge deck as a result is noted. Suspension bridge is then modelled with the best sag value. The optimal value is determined by the diameter at which the deck deflection is at its lowest. It is indicated how much steel was needed to achieve the desired diameter and sag. The ideal diameter of the cable used in the Cable-Stayed Bridge was determined by a similar technique. In SAP 2000, the bridges are modelled. The outcome demonstrates that, when compared to a suspension bridge of equal length, cable stayed bridges consume less steel and experience less deflection.