Damping Parameter Identification of Large Span Cable-Stayed Bridges
| Periodical | Applied Mechanics and Materials (Volumes 50 - 51) |
|---|---|
| Main Theme | Intelligent Structure and Vibration Control |
| Edited by | Shaobo Zhong, Yimin Cheng and Xilong Qu |
| Pages | 998-1002 |
| DOI | 10.4028/www.scientific.net/AMM.50-51.998 |
| Citation | Zhan Yu Bu et al., 2011, Applied Mechanics and Materials, 50-51, 998 |
| Online since | February, 2011 |
| Authors | Zhan Yu Bu, Xu Xie, Yong Ding |
| Keywords | Cable-Stayed Bridge, Damping Parameter Identification, Non-Proportional Damping |
| Price | US$ 28,- |
The damping makeup of large span cable-stayed bridges is complicated. The damping matrices of such structures cannot be easily accurately determined. On assumption of the damping coefficients of substructures in cable-stayed bridge (such as girder, tower, cable and support et al) are constants, a method to estimate the damping coefficients and damping matrices of such structures is presented. The method is based on several known modal damping ratios and the calculation of complex eigenvalue and eigenvector utilizing the state-space methodology. Numerical simulation was carried out by the example of Tatara Bridge. Through comparison between the calculated damping ratios utilizing the approximated damping matrices and the field test data, the method is proved valid.
