Abstract
In order to investigate the earthquake response and seismic-reduced effect of long-span continuous girder bridge with longitudinal viscous dampers, regarded Qingdao Gulf Bridge as engineering background, a 1/20 scale model of three-span continuous girder bridge (one fixed pier and three free piers) was designed and studied under shaking table test, in which three viscous dampers were installed between the tops of free piers and the girder in longitudinal direction. The research results indicate that under earthquake excitation, the damping ratio of continuous girder bridge structure with damper increases rapidly; at the same time, the main girder's displacements and the fixed pier's internal forces reduce. The seismic-reduced effects of girder's displacements and the fixed pier's forces increase when the input earthquake intensity gets stronger. Selecting suitable parameters of damper can get good seismic energy dissipating effect.
| Original language | English |
|---|---|
| Pages (from-to) | 54-59 |
| Number of pages | 6 |
| Journal | Zhongguo Gonglu Xuebao/China Journal of Highway and Transport |
| Volume | 22 |
| Issue number | 5 |
| State | Published - Sep 2009 |
Keywords
- Bridge engineering
- Long-span continuous girder bridge
- Seismic-reduced effect
- Shaking table model test
- Viscous damper