Research Article
Spatial Finite Element Analysis for Dynamic Response of Curved Thin-Walled Box Girder Bridges
Table 1
Comparison of the frequencies and modes.
| Mode number | BEAM188/Hz | The present element/Hz | Error/% | The mode that predominates in dynamic response |
| 1 | 9.372 | 9.7099 | | The first-order mode of vertical bending | 2 | 18.936 | 18.044 | | The first-order mode of lateral bending | 3 | 21.717 | 20.387 | | The first-order mode of torsion | 4 | 22.177 | 23.458 | | The second-order mode of vertical bending | 5 | 37.845 | 37.803 | | The second-order mode of torsion | 6 | 40.317 | 40.458 | | The second-order mode of lateral bending | 7 | 45.197 | 41.897 | | The third-order mode of vertical bending | 8 | 54.686 | 54.630 | | The first-order mode of axial deformation |
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