Unbalanced Application of Wind Stabilizing Cables for the Free Cantilevered Construction of a Cable-Stayed Bridge
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Bibliographic Details
| Author(s): |
Ho-Kyung Kim
Gwon-Teak Kim SangHoon Lee Jin Park |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Large Structures and Infrastructures for Environmentally Constrained and Urbanised Areas, Venice, Italy, 22-24 September 2010 | ||||
| Published in: | IABSE Symposium Venice 2010 | ||||
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| Page(s): | 776-777 | ||||
| Total no. of pages: | 6 | ||||
| Year: | 2010 | ||||
| DOI: | 10.2749/222137810796063652 | ||||
| Abstract: |
Since the buffeting induced force effects exceed the design strength of the cross-section of pylon for a 500m cable-stayed bridge, several mitigation plans have been investigated with the use of stabilizing cables. The design wind speed of the stabilizing cable was determined from the long- term wind speed data of the nearby Automatic Weather System and the conversion of the wind speed to the bridge site was performed by the Measure-Correlate-Predict Method with the help of ultra-sonic anemometers installed in the construction site. A frequency-domain buffeting analysis, based on the aeroelastic formulation with flutter derivatives, is applied for the design of stabilizing cables. Two acceptable measures are proposed with the application of unbalanced stabilizing cables to enable vessel traffic in the center span. The proposed stabilizing measures by a series of buffeting analysis are verified through three-dimensional experiments in a wind tunnel with the scale of 1:150. |
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| Keywords: |
design cable-stayed bridge wind tunnel test buffeting wind speed stabilizing cable
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