Abstract
The method of parametric optimization is investigated for mitigating cable vibration by using magneto-rheological (MR) dampers on cable-stayed bridges. A series of tests are conducted, and a nonlinear bi-viscous model is developed for the RD-1005 MR damper made by Lord Corporation. An empirical formula of equivalent viscous coefficient is derived for the MR damper under different input voltages, exciting frequencies and displacement amplitudes. Taking account of the sag, bending stiffness and inclination angle of cables, the design method for mitigating cable vibration by using viscous dampers is studied, and the Pacheco's design curve is revised based the new findings. Finally, an optimal design method is proposed for mitigating cable vibration by using MR dampers. Field test results show that the proposed method can be useful for bridge design.
| Original language | English |
|---|---|
| Pages (from-to) | 91-97 |
| Number of pages | 7 |
| Journal | Tumu Gongcheng Xuebao/China Civil Engineering Journal |
| Volume | 39 |
| Issue number | 3 |
| Publication status | Published - 1 Mar 2006 |
Keywords
- Cable-stayed bridge
- Magneto-rheological (MR) damper
- Stay cable
- Vibration control
ASJC Scopus subject areas
- Civil and Structural Engineering
- Architecture
- Building and Construction
- Arts and Humanities (miscellaneous)