Method for using vertical axial draught fans for conducting vortex vibration control over long-span bridge
A vertical axis, long-span technology, applied in bridges, buildings, etc., can solve the problems of complex structure, high one-time investment and maintenance investment, and achieve good disrupting effect, obvious vortex vibration control effect, and less one-time investment
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[0031] For common and typical main beam types, the application of the present invention is only a partial reinforcement at the position where the vertical axis fan is installed, and no major transformation is required. In the first embodiment, the vertical axis fan 2 is installed on the closed flat box-shaped main beam 1, such as figure 1 Shown. In the second embodiment, the vertical axis fan 2 is installed on the main beam 1 with double ribs, such as figure 2 Shown. In the third embodiment, the vertical axis fan 2 is installed on the open flat box-shaped main beam 1, such as image 3 Shown. After research and testing, the vertical axis fan wake has a large impact area, contains a large amount of energy, has a good effect on disrupting regular vortices, and has obvious vortex vibration control effects and is suitable for different types of bridges.
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