Simulations for identification of flutter derivatives of bridge section using the coupled-forced-vibration method

A new method,coupled-forced-vibration method,for the identification of flutter derivatives of 2-DOF section of bridge is developed in this paper.The dynamic mesh technology of CFD is used to simulate the coupled-forced vibration of the segmental model,and the flutter forces are identified through a calculation on its self-excited forces.Taking the segmental model of Great Belt Bridge as an example,via this method,eight flutter derivatives of the model are then obtained.The practicability of the method presented in this paper is proved through the consistency between the numerical results and the(experimental) results.