Coupled flutter stabilization of long-span bridges using equivalent aerodynamic derivatives
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- MATSUMOTO Masaru
- Dept. of Civil & Earth Resources Engineering, Kyoto University
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- OKUBO Kazumasa
- Kajima Construction Company
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- KIM Ginam
- Dept. of Civil & Earth Resources Engineering, Kyoto University
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- ITO Yasuaki
- Dept. of Civil & Earth Resources Engineering, Kyoto University
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- MATSUMIYA Hisato
- Dept. of Civil & Earth Resources Engineering, Kyoto University
Bibliographic Information
- Other Title
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- 等価非定常空気力係数を用いた長大橋梁の連成フラッター安定化策
Abstract
Since flutter phenomenon is catastrophic oscillation, its stabilization is a very important subject in the design of long span bridges. In this paper, an analytical approach is presented to stabilize the coupled flutter of long-span bridges from the viewpoint of equivalent aerodynamic derivatives, which depend on the vibration mode shapes and the arrangement of stiffened-girder sections to the span direction. Firstly, based on the natural vibration mode, the coupled flutter characteristics and its stabilization scheme of long-span bridges are examined using the Theodorsen function. Then, the effective arrangement of stiffened-girder sections is investigated using the grating girder section and 2-box girder section with triangle fairings. As a result, the presented approach is available to stabilize the coupled flutter of long-span bridges with low torsional rigidity.
Journal
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- PROCEEDINGS OF NATIONAL SYMPOSIUM ON WIND ENGINEERING
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PROCEEDINGS OF NATIONAL SYMPOSIUM ON WIND ENGINEERING 19 (0), 447-452, 2006
Japan Association for Wind Engineering
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Details 詳細情報について
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- CRID
- 1390001205592959872
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- NII Article ID
- 130004644360
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed