Research Article
Auxiliary Piers on Long-Span Specially Shaped Mixed Steel Structure Main Tower Cable-Stayed Bridge: Research on the Impact on the Dynamic Performance
Table 4
Natural frequency and deformation characteristics of Model 4.
| | Order | Natural frequency (Hz) | Increment of the natural frequency compared with that of Model 1 (%) | Deformation characteristics |
| | 1 | 1.38 | 106.0 | First-order Y-bending of the main beam | | 2 | 1.44 | 82.3 | First-order Y-bending of the main beam | | 3 | 2.40 | 57.9 | Y-curved main tower | | 4 | 2.51 | 28.1 | X-direction bending of the main tower | | 5 | 3.06 | 55.3 | First-order Z-direction of the main beam + X-direction bending of the main tower | | 6 | 3.29 | 61.3 | Main beam first-order Y-direction + torsional bending | | 7 | 3.43 | 51.1 | Main beam first-order Y-direction + main beam torsion + main tower torsion deformation | | 8 | 3.62 | 52.7 | Second-order Y-direction of main beam + Y-direction bending of the main tower |
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