Modal Analysis of a Cable-stayed Bridge

The project involved in this paper is a single-tower double-cable-plane bridge, and the gulf nearby the bridge is in a typical typhoon-affected zone. Therefore, modal analysis of the cable-stayed bridge should be carried out. In this paper, based on the structural vibration theory and the theory of finite element model (FEM) , the space FEM model of the cable-stayed bridge are established with APDL — ANSYS Parametric Design Language. Vibration mode and its frequency can be concluded by the calculating of the cable-stayed bridge's FEM model.