Simplified buffeting analysis in time domain on the basis of ANSYS for cable-stayed bridge

Buffeting is one of recurring aeroelastic dynamic responses of long-span bridge. A simplified method used to predict the buffeting responses of long-span bridges in time domain is developed on the basis of ANSYS. In this method, the time domain transformation of self-exited force is realized by means of adding aerodynamic stiffness and aerodynamic damping element to FE model. As an engineering example, buffeting responses of Shenzhen Gulf Bridge are calculated under different wind velocities and angles. Results by the presented method are in conformity with those of traditional buffeting analysis in frequency domain.