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

Table 8

Displacements and axial forces of the three structural models under the transverse bridge direction + 1/2 vertical excitation.

Structure type	Maximum displacement of the tower top (mm)			Maximum displacement in the middle of the span (mm)			Maximum axial force in the middle of the span (kN)
	Cross bridge	Longitudinal direction	Vertical	Cross bridge	Longitudinal direction	Vertical
Model 1	48.31	0.003	61.18	197.05	0.74	59.55	6.24 × 10^3
Model 4	36.72	0.003	61.24	78.69	0.75	8.07	5.68 × 10^3
Model 5	69.11	0.006	61.38	9.87	0.72	0.42	6.89 × 10^3