On 3-D Aerodynamic Characteristics of Bridge Tower
| Autor: | Kazushi Ogawa |
|---|---|
| Rok vydání: | 1994 |
| Předmět: | |
| Zdroj: | Wind Engineers, JAWE. 1994:53-54 |
| ISSN: | 1883-8413 0912-1935 |
| Popis: | This paper introduces the aerodynamic device utilizing three dimensional aerodynamic characteristics of the pylon, to suppress the wind-induced vibrations in the cable-stayed bridge pylon. The pylon form is assumed to be “A” which includes “inverse Y” and “inverse V”. The pylon often vibrates in the perpendicular direction to the bridge-axis by the bridge axis wind. The corner-cut is said to be effective in stabilizing the aerodynamic characteristics of a pylon section . It can be seen that the application of a corner-cut to a half length of the upper shaft is more effective than to the full length of the upper shaft. The horizontal beam connecting two upper shafts in “A” pylon is also effective to suppress the wind-induced vibrations. The stream visualization with a taft method shows that the horizontal beam in “A” pylon disturbs the axial flow along the shaft side-face which is a strong current in the “inverse V” pylon. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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