Analysis of Free Cable Vibration with Material Damping for an Applied Cable-Stayed Bridge

Monitoring cable tension has recently been an important problem in assessing the condition of cable-stayed structures. Many factors that affect cable tension, such as flexural rigidity, sag, lay angle, and complicated boundary conditions, were studied. However, the influence of damping has rarely been considered. In this paper, the mathematical model of the damped vibration of the cable has been studied to find the effect of material damping on tension. The experimental results from vibration data of cables in the cable-stay bridge are used to verify the relationship between frequency, damping, and tension. This study aims to use vibration techniques to increase accuracy in tension determination and condition assessment of cables.