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Unbalanced Application of Wind Stabilizing Cables for the Free Cantilevered Construction of a Cable-Stayed Bridge

 Unbalanced Application of Wind Stabilizing Cables for the Free Cantilevered Construction of a Cable-Stayed Bridge
Auteur(s): , , ,
Présenté pendant IABSE Symposium: Large Structures and Infrastructures for Environmentally Constrained and Urbanised Areas, Venice, Italy, 22-24 September 2010, publié dans , pp. 776-777
DOI: 10.2749/222137810796063652
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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 st...
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Auteur(s):



Médium: papier de conférence
Langue(s): anglais
Conférence: IABSE Symposium: Large Structures and Infrastructures for Environmentally Constrained and Urbanised Areas, Venice, Italy, 22-24 September 2010
Publié dans:
Page(s): 776-777 Nombre total de pages (du PDF): 6
Page(s): 776-777
Nombre total de pages (du PDF): 6
Année: 2010
DOI: 10.2749/222137810796063652
Abstrait:

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.

Mots-clé:
design Pont à haubans essai en soufflerie

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