USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation
OFFICE OF RESEARCH, DEVELOPMENT, AND TECHNOLOGY AT THE TURNER-FAIRBANK HIGHWAY RESEARCH CENTER

Aerodynamic Stability of Bridge Stay Cables—Dynamic Tests and Simulations

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:
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