Abstract
A research based on Jiashao Bridge is carried out to reduce buffeting response under strong wind of the control section of main girder of the longest cantilever state and to ensure the security of the bridge during the construction period. A method that the ends of cantilevers are connected with several temporary damping cables is considered as wind-resistant measure. 4 modes with different damping cable arrangement are supposed, and the wind-resistant effect corresponding to the 4 modes are compared by FEM analysis. A mode with the best wind-resistant effect and economical meanwhile is selected out and local optimization is added to the selected mode. Some valuable conclusion obtained from the research could be adopted in Jiashao Bridge and the similar projects.
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