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Wind and Structures
  Volume 7, Number 5, September 2004, pages 293-304
DOI: http://dx.doi.org/10.12989/was.2004.7.5.293
 


MR damping system for mitigating wind-rain induced vibration on Dongting Lake Cable-Stayed Bridge
Z. Q. Chen, X. Y. Wang and J. M. Ko, Y. Q. Ni, B. F. Spaencer, G. Yang and J. H. Hu

 
Abstract
    The Dongting Lake Bridge is a cable-stayed bridge crossing the Dongting Lake where it meets the Yangtze River in southern central China. Several intensive wind-rain induced vibrations had been observed since its open to traffic in 1999. To investigate the possibility of using MR damping systems to reduce cable vibration, a series of field tests were conducted. Based on the promising research results, MR damping system was installed on the longest 156 stay cables of Dongting Lake Bridge in June 2002, making it the worlds first application of MR dampers on cable-stayed bridge to suppress the wind-rain induced cable vibration. As a visible and permanent aspect of the bridge, the MR damping system must be aesthetically pleasing, reliable, durable, easy to maintain, as well as effective in vibration mitigation. Substantial work was done to meet these requirements. This paper describes field tests and the implementation of MR damping systems for cable vibration reduction. Three-years reliable service of this system proves its durability.
 
Key Words
    cable-stayed bridges; stay cable; wind-rain induced vibration; MR dampers; vibration mitigation.
 
Address
Z. Q. Chen; School of Civil Engineering, Hunan University, Changsha, Hunan 410082, P. R. ChinarnX. Y. Wang; Department of Civil and Structural Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, P. R. ChinarnJ. M. Ko and Y. Q. Ni; Faculty of Construction and Land Use, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong KongrnB. F. Spencer and G. Yang; Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USArnJ. H. Hu; School of Civil Engineering, Hunan University, Changsha, Hunan 410082, P. R. Chinarn
 

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