The natural frequency and vibration mode are the principal modal parameters for representing structure dynamic behavior and the important basis for evaluating bridge dynamic performance. A three-dimensional finite element model for single pylon cable-stayed bridge with ANSYS procedure was created to analyze the dynamic performance of Shizhou Cable-Stayed Bridge in Enshi City. The result enunciates that the torsion modal appears early ,and the lord across consecution with extension makes the lord across horizontal benting of the first modal, which could serve...
