Numerical Study on the Dynamic Amplification Factor of Cable- Stayed Bridges Due to Cable Failure

초록

This study examined the influence of cable failure on the dynamic behavior of cable-stayed bridges through numerical study and review of the available design guidelines. To validate the applied analytical method, a cable cutting laboratory test was carried out on a model cable-stayed bridge as shown below. Then, multiple simulations were carried out with different choices of single or multiple cable cuttings. The major concerns in this study were the selection of a proper cable rupture duration for dynamic analysis and a reliable determination of the dynamic amplification factor from the analytical results obtained when single or multiple cables are cut.