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                Aerodynamic Stability of Bridge Stay Cables—Dynamic Tests and Simulations
FHWA-HRT-22-097.pdf (4.86 MB)
      
  Publication Information
                  Publication Type:Technical Report
                  Publication Number:FHWA-HRT-22-097
              Abstract:Cable-stayed bridge configurations have become more common over the past several decades for bridges in the medium- to long-span range. The stay cables on these bridges are slender and flexible elements that are vulnerable to wind-induced vibration, potentially leading to safety, serviceability, and user comfort issues. Two of the significant types of wind-induced vibration are dry galloping and galloping in icing conditions.



The Federal Highway Administration (FHWA) initiated this study to further investigate the effect of small deviations of the nominally circular cable cross section, a factor identified in recent research work as one of the important factors in galloping. This study is a significant step toward better prediction and prevention of aerodynamic issues on cable-stayed bridges. The results shed light on potential mitigation methods not only in design and retrofitting, but also in cable manufacturing, erection, and quality control. While additional research is recommended to develop appropriate models for analyzing and predicting vibration potential, the stability threshold demonstrated in this study may be an interim reference for reducing the risk of significant cable vibration before final design and analysis methods are available.





Recommended citation: Federal Highway Administration, Aerodynamic Stability of Bridge Stay Cables—Dynamic Tests and Simulations (Washington, DC: 2022) https://doi.org/10.21949/1521926.
              Publishing Date:August 2022
              Posting Date:02/01/2023
                              Digital Object Identifier:https://doi.org/10.21949/1521926
              Author(s):Larose,
    
          Guy
              Stoyanoff,
    
          Stoyan
              Dunn,
    
          Brian
              Publishing Office:Bridge Engineering Team
                  FHWA Program(s):Research
              Infrastructure
              Safety
              AMRP Program(s):Bridges
              FHWA Activities:Long-Term Bridge Performance
              Subject Area:Bridges and other structures U.S. DEPARTMENT OF TRANSPORTATION

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