The jitter frequency domain of long-span railway cable-stayed bridges considering the influence of pneumatic admittance

Abstract The long-span bridge is highly sensitive to wind loads, and their random vibration response under static deformation fluctuating load are relatively complex. analysis of jitter has become a key issue in the design. Taking Hanjiatuo Yangtze River Bridge chongqing-lichuan railway as engineering background, influence different aerodynamic admittance functions on main girder studied through frequency domain analysis. results show that great response. Considering displacement function obviously smaller than calculated results, should be considered calculation