Structural Engineering and Mechanics

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Ambient Vibration measurements and finite element modelling for the Hong Kong Ting Kau Bridge

  • Au, F.T.K. (Department of Civil Engineering, The University of Hong Kong) ;
  • Tham, L.G. (Department of Civil Engineering, The University of Hong Kong) ;
  • Lee, P.K.K. (Department of Civil Engineering, The University of Hong Kong) ;
  • Su, C. (Department of Civil Engineering, South China University of Technology) ;
  • Han, D.J. (Department of Civil Engineering, South China University of Technology) ;
  • Yan, Q.S. (Department of Civil Engineering, South China University of Technology) ;
  • Wong, K.Y. (Tsing Ma Control Area Division, Highways Department, The Government of the Hong Kong)
  • Received : 2002.06.28
  • Accepted : 2002.11.15
  • Published : 2003.01.25
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Abstract

The Ting Kau Bridge in Hong Kong is a cable-stayed bridge comprising two main spans and two side spans. The bridge deck is supported by three towers, an end pier and an abutment. Each of the three towers consists of a single reinforced concrete mast which reduces its section in steps, and it is strengthened by transverse cables and struts in the transverse vertical plane. The bridge deck is supported by four inclined planes of cables emanating from anchorages at the tower tops. In view of the threat from typhoons, the dynamic behaviour of long-span cable-supported bridges in the region is always an important consideration in their design. This paper is devoted to the ambient vibration measurements of the bridge for evaluation of dynamic characteristics including the natural frequencies and mode shapes. It also describes the modelling of the bridge. A few finite element models are developed and calibrated to match with the field data and the results of subsequent structural health monitoring of the bridge.

Keywords

References

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