Water body damping device and method for controlling vortex vibration and flutter of cross-sea and cross-river bridge
A damping device and water body technology, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of inability to adjust in real time, the control effect needs to be observed and verified, and the complexity of the flow around the bridge section, so as to protect the bridge structure and suppress vibration. Effect
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Embodiment 1
[0037] This embodiment provides a water body damping device for controlling eddy vibration and flutter of bridges across seas and rivers, such as Figure 1 to Figure 4 As shown, the water body damping device 1 is included, and the water body damping device 1 is connected with the anchor hole provided at the bottom of the main beam 3 through the steel cable 2 and immersed in water. The water body damping device 1 is arranged on both sides of the bridge, and is respectively arranged 1 / 2, 1 / 4, 1 / 8 of the length of the main beam 3. The water body damping device 1 includes a steel frame 11 and a water resistance cup 12. One end of the water resistance cup 12 is provided with a barrier ring 13 and a water resistance cup cover 14. The water resistance cup cover 14 is arranged on the water resistance cup 12 and the barrier ring. Between 13, and connected with the water resistance cup 12, the blocking ring 13 is used to prevent the water resistance cup cover 14 from being opened to the...
Embodiment 2
[0043] This embodiment provides a method for controlling eddy vibration and flutter of a cross-sea and river-crossing bridge. The method uses the above-mentioned water body damping device 1 as a tool, and includes the following steps:
[0044] S1: When eddy vibration and flutter occur in the bridge, connect the water body damping device 1 to the bottom of the main beam 3 through the steel cable 2, and put it into the water;
[0045] S2: The water body damping device 1 suppresses the eddy vibration and flutter of the bridge;
[0046] S3: After the vortex and flutter of the bridge disappear, the water body damping device 1 is removed and put away.
[0047] Step S2 specifically includes the following steps:
[0048] S21: When the main beam 3 moves upward, the water body damping device 1 moves upward under the action of tension, and the water flow makes the water resistance cup cover 14 close the bottom of the water resistance cup 12, increasing the resistance and damping of the ...
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