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Wind and Structures
  Volume 16, Number 4, April 2013, pages 393-409
DOI: https://dx.doi.org/10.12989/was.2013.16.4.393
 


Wind-induced response and loads for the Confederation Bridge. Part II: derivation of wind loads
Bilal Bakht , J. Peter C. King and F. M. Bartlett

 
Abstract
    This paper uses ten years of on-site monitoring data for the Confederation Bridge to derive wind loads and investigate whether the bridge has experienced its design wind force effects since its completion in 1997. The load effects derived using loads from the on-site monitoring data are compared to the load effects derived using loads from the 1994 and 2009 wind tunnel aerodynamic model tests. The research shows, for the first time, that the aerodynamic model-based methodology originally developed in 1994 is a very accurate method for deriving wind loads for structural design. The research also confirms that the bridge has not experienced its specified (i.e., unfactored) wind force effects since it was opened to traffic in 1997, even during the most severe event that has occurred during this period.
 
Key Words
    full-scale, long-span, RMS accelerations, load effects, aerodynamic damping, wind tunnel testing, full-aeroelastic model, mode shape, frequency
 
Address
Bilal Bakht : Ministry of Transportation and Infrastructure, KAMLOOPS BC, Canada
J. Peter C. King: Boundary Layer Wind Tunnel Laboratory, University of Western Ontario, London ON, Canada
F. M. Bartlett : Department of Civil and Environmental Engineering, University of Western Ontario, London ON, Canada
 

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