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

Table 14

Maximum bending moments of the tower root and midspan of the three structural models under longitudinal bridge direction + 1/2 vertical excitation.

Structure type	Tower root maximum bending moment (kN·m)			Maximum bending moment in the middle of the span (kN·m)
	Cross bridge	Longitudinal direction	Vertical	Cross bridge	Longitudinal direction	Vertical
Model 1	7.59 × 10^4	6.49 × 10^5	1.04 × 10^5	2.19 × 10^5	6.88 × 10^3	352.22
Model 4	6.17 × 10^4	6.58 × 10^5	8.08 × 10^4	9.18 × 10^4	7.05 × 10^3	358.79
Model 5	7.51 × 10^4	6.62 × 10^5	9.59 × 10^4	3.28 × 10^4	7.62 × 10^3	360.75