基于在建的乌江大桥板式加劲梁,进行了风洞强迫振动试验和数值模拟,识别了多个攻角下的颤振导数。研究结果表明,基于合理的网格划分,采用数值模拟的方法能正确识别攻角下的颤振导数;攻角对重要的颤振导数影响明显,大攻角会对板式加劲梁的气动稳定性带来不利影响。 Based on the Wujiang Bridge slab girder under construction, wind tunnel forced vibration tests and numerical simulations were carried out, and the flutter derivatives at multiple angles of attack were identified. The results show that, based on reasonable meshing, the numerical simulation method can correctly identify the flutter derivatives under the attack angle. The angle of attack has an obvious influence on the important flutter derivatives. The attack angle will affect the aerodynamic stability of the slab girder Bring adverse effects.