| Title |
A Study on the Aerodynamic Stability of Long Span Pedestrian Bridges |
| Authors |
이승호(Lee, Seungho) ; 정회갑(Jeong, Houigab) ; 권순덕(Kwon, Soon-Duck) |
| DOI |
https://doi.org/10.12652/Ksce.2019.39.2.0287 |
| Keywords |
보도교;내풍안정성;풍동실험;그레이팅 Pedestrian bridge;Aerodynamic stability;Wind tunnel test;Open grating |
| Abstract |
In recent years, a number of long span cable-stayed pedestrian bridges have been constructed to the advantages of relatively low cost construction and the many tourists visiting. However, most of the pedestrian bridges are located in parks or sightseeing areas, so they are conducted without proper review and design process. It is necessary to review the aerodynamic stability of the long span cable-stayed pedestrian bridge, and it should be designed in detail from various points of view rather than the road bridge. In this study, we investigated the wind characteristics of the cable-stayed pedestrian bridge, and the empirical equations for the relationship between the main span length and the fundamental natural frequencies are presented for future use. In addition, the flutter wind speed limit of the flat plate deck pedestrian bridge calculated using the Selberg's equation is also presented. The final aerodynamic bridge section which satisfied the aerodynamic stability was found from open grating method. The proposed method can be used for long span cable-stayed pedestrian bridge in the future. |