Parametric optimization for mitigating cable vibration by using MR dampers on cable-stayed bridges

Jianhua Hu, Xiuyong Wang, Zhengqing Chen, Yiqing Ni

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)

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 languageEnglish
Pages (from-to)91-97
Number of pages7
JournalTumu Gongcheng Xuebao/China Civil Engineering Journal
Volume39
Issue number3
Publication statusPublished - 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)

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