|
| Mode number | Bridge type | Frequencies (Hz) | Mode shape |
|
| 1 | S | 0.244 | The 1st-order cross bending of the main span of the girder |
| D | 0.243 | The 1st-order cross bending of the main span of the girder |
|
| 2 | S | 0.306 | The 1st-order symmetrical vertical bending of the girder |
| D | 0.325 | The 1st-order symmetrical vertical bending of the girder |
|
| 3 | S | 0.467 | The 2nd-order symmetrical vertical bending of the girder |
| D | 0.472 | The 2nd-order symmetrical vertical bending of the girder |
|
| 4 | S | 0.581 | The bending torsion-coupling of the left span of the girder |
| D | 0.584 | The bending torsion-coupling of the left span of the girder |
|
| 5 | S | 0.612 | The 1st-order symmetrical bending of the girder |
| D | 0.608 | The 1st-order symmetrical bending of the girder |
|
| 6 | S | 0.656 | The 3rd-order symmetrical vertical bending of the girder |
| D | 0.661 | The 2nd-order symmetrical vertical bending of the girder |
|
| 7 | S | 0.671 | The obvious bending torsion-coupling of the girder |
| D | 0.673 | The slight bending torsion-coupling of the girder |
|
| 8 | S | 0.716 | The bending torsion-coupling of the main and right span of the girder |
| D | 0.718 | The bending torsion-coupling of the right span of the girder |
|
| 9 | S | 0.758 | The obvious bending torsion-coupling of the girder |
| D | 0.763 | The slight bending torsion-coupling of the girder |
|
| 10 | S | 0.774 | The 4th-order symmetrical vertical bending of the girder |
| D | 0.822 | The 4th-order symmetrical vertical bending of the girder |
|
| 11 | S | 0.830 | The obvious bending torsion-coupling of the main span of the girder |
| D | 0.919 | The obvious bending torsion-coupling of the main span of the girder |
|
| 12 | S | 0.946 | The 5th-order symmetrical vertical bending of the girder |
| D | 1.006 | The 5th-order symmetrical vertical bending of the girder |
|
