Based on the twodimensional 3DOF coupling flutter analysis method(2d3DOF method),the flutter controlling effect and mechanism of central stabilizer on a thin plate section are investigated with a series of sectional model wind tunnel tests.

In order to analyze the aerodynamic mechanism of central stabilizers,firstly,a data processing method for identification of the bridge aerodynamic derivatives in time domain was presented based on three degrees of freedom coupling forced vibration method and 18 aerodynamic derivatives were identified at truss-girder section with and without central stabilizer.