Dynamic Response Study of a Single Tower Cable Stayed Bridge using Finite Element Method
Cable-stayed bridges are most widely used in modern bridge construction. The dynamic response of a single tower cable-stayed bridge is studied by performing nonlinear dynamic analysis using finite element method based software ANSYS. A three-dimensional bridge model was developed. Steel cables were simulated using a single element approach. Due to the coupling effects, the bridge exhibits complex modal shapes. The response of the bridge in the vertical direction is more elastic and flexible as compared to the longitudinal and transverse direction. The response of the critical sections of girder, tower, and cables was also studied by time-history analysis using the ground acceleration data of EI-Centro 1940. A 10-second ground data with 0.0001 second time step was used.
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