Journal article

Aerodynamic Countermeasure Schemes of Super Long-Span Suspension Bridges with Various Aspect Ratios

Yongxin Yang, Yaojun Ge, Rui Zhou, Shiguo Chen, Lihai Zhang

International Journal of Structural Stability and Dynamics | WORLD SCIENTIFIC PUBL CO PTE LTD | Published : 2020

Abstract

The purpose of this study is to investigate the flutter control scheme of super long-span bridges with various aspect ratios (e.g. width to height (B/H)) using passive aerodynamic countermeasures. Through a series of wind tunnel testing and theoretical analysis, three types of passive aerodynamic countermeasures, i.e. vertical central stabilizer (VCS), wind barrier and inspection rail, were investigated for five typical aspect ratios of a closed-box girder bridge. The results show that both the aspect ratio and flutter critical wind speed generally increase with the decrease of the ratio of torsional and vertical frequencies of the bridge. In the case of an aspect ratio of 8.9, a downward VC..

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University of Melbourne Researchers

Grants

Awarded by National Science Foundations of China


Awarded by Basic and Applied Basic Research Foundations of Guangdong Province


Awarded by Natural Science Foundation of Shenzhen University


Awarded by State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University


Funding Acknowledgements

The authors gratefully acknowledge the support for the research work jointly provided by the National Science Foundations of China (Nos. 51908374 and 51678436), the Basic and Applied Basic Research Foundations of Guangdong Province (No. 2019A1515012050) and the Natural Science Foundation of Shenzhen University (No. 860-000002110345). Supported by State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University (No. KF2020-19).