Passive Control System for Mitigation of Longitudinal Buffeting Responses of a Six-Tower Cable-Stayed Bridge

Table 1

Vibration modes of finite element model of Jiashao Bridge.

Mode number	Frequency/Hz	Description
1	0.2274	1st symmetric vertical bending of bridge deck + symmetric longitudinal bending of bridge tower
2	0.2615	1st antisymmetric vertical bending of bridge deck + antisymmetric longitudinal bending of bridge tower
3	0.2894	1st symmetric lateral bending of bridge tower
4	0.2907	1st antisymmetric lateral bending of bridge tower
5	0.2928	2nd symmetric lateral bending of bridge tower
6	0.2950	2nd antisymmetric lateral bending of bridge tower
7	0.2965	3rd symmetric lateral bending of bridge tower
8	0.2970	3rd antisymmetric lateral bending of bridge tower
9	0.3085	2nd symmetric vertical bending of bridge deck + symmetric longitudinal bending of bridge tower
10	0.3618	2nd antisymmetric vertical bending of bridge deck + antisymmetric longitudinal bending of bridge tower
21	0.7087	1st symmetric lateral bending of bridge deck + symmetric lateral bending of bridge tower
33	0.8956	1st antisymmetric lateral bending of bridge deck + antisymmetric lateral bending of bridge tower
43	1.1361	1st symmetric torsion of bridge deck
44	1.1389	2nd symmetric torsion of bridge deck