Correlation Analysis of Bridge Flutter Critical Wind Speed and Three-Component Force Coefficient Based on Grey Correlation Method

Abstract

Based on the grey correlation theory, analyze the correlation between the three typical main girder section flutter critical wind speed and three-component force coefficient of long-span bridge truss section, closed steel box girder section, and slotted steel box girder section. Provide a reference for establishing the prediction model of the flutter critical wind speed estimated from the static wind load, It is convenient to quickly and accurately judge the stability of bridge flutter. The analysis results show that the lift coefficient, the lift moment coefficient and their derivatives have a good correlation.