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Wind and Structures
  Volume 11, Number 5, September 2008 , pages 391-411

Design of aerodynamic stabilizing cables for a cable-stayed bridge during construction
Sung-Won Choi and Ho-Kyung Kim

    A design procedure of stabilizing cable is proposed using buffeting analysis to stabilize the seesaw-like motion of the free cantilevered structure of a cable-stayed bridge during its construction. The bridge examined is a composite cable-stayed bridge having a main span length of 500?m. Based on the buffeting analysis, the stress in bare structure exceeded the allowable limit and a set of stabilizing cable was planned to mitigate the responses. The most efficient positions of the hold-down stabilizing cables were numerically investigated by means of an FE-based buffeting analysis and the required dimensions and pretension of the stabilizing cables were also calculated. The proposed stabilizing measure would be expected to secure the aerodynamic safety of a cantilevered structure under construction with considerable mitigation of buffeting responses.
Key Words
    buffeting; stabilizing cable; cable-stayed bridge; construction; design.
Sung-Won Choi; DM engineering, Bangii-dong, Songpa-ku, Seoul, 138-050, Korea
Ho-Kyung Kim; Department of Civil Engineering, Mokpo National University, Muan-gun, Jeonnam, 534-729, Korea

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