Auxiliary Piers on Long-Span Specially Shaped Mixed Steel Structure Main Tower Cable-Stayed Bridge: Research on the Impact on the Dynamic Performance

Table 1

The natural frequency and deformation characteristics of Model 1.

Order	Natural frequency (Hz)	Deformation characteristics
1	0.67	First-order Y-bending of the main beam
2	0.79	First-order Y-bending of the main beam
3	1.52	First-order Z-bending of the main beam
4	1.96	First-order Z-bending of the main beam
5	1.97	Torsion and bending of the main beam
6	2.04	Second-order Y-direction bending of the main beam
7	2.27	Second-order Y-direction bending of the main beam
8	2.37	Main beam second-order Z-direction + torsional bending