Effect of dynamic load analysis on pylon configurations of cable stayed bridges

Civil Engineering

Man’s achievement in field of Structural Engineering is evident from world’s largest bridge spans, tallest structures etc. In the recent years, cable stayed bridges have received more attention than any other bridge mainly, in the United States, Japan and Europe as well as in third-world countries due to their ability to cover large spans. Cable-stayed can cross almost 1000m (Tatara Bridge, Japan, Normandy Bridge, France) A study is carried out to find the dynamic effect on different shapes of pylons of a cable stayed bridge. The different shapes of pylons considered here are H type, A type, Spread pylon system with 19° and 30° spread. The central span of the cable stayed bridge is also varied as 700m, 850m, 1000m to study the combined effects due to shape and span. The study is carried out by taking live load according to IRC 6:2014, IRC Class A and Class 70R vehicle load was undertaken. A Dynamic analysis in the form of Linear Time-history is also carried out using El-Centro ground motion and various response quantities such as Bending-moment, Shear- force, Torsion and Axial force are represented.

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