Distributed Bridge Eddy Vibration Suppression Method and System Based on Sensing Data Fusion

Abstract

This application discloses a distributed bridge eddy vibration suppression method and system based on sensory data fusion. The system includes eddy vibration suppression devices distributed in multiple sections on the bridge. Each eddy vibration suppression device includes a bottom spoiler, The first rotation module, stress detection module, vibration detection module, wind speed detection module and control module; each bottom spoiler is installed on the lower surface of the bridge through the corresponding first rotation module; each bottom spoiler is installed with a stress The detection module is used to collect the stress data on the corresponding bottom spoiler; the vibration detection module is used to collect the vibration data of the bridge deck of the vibration detection module; the wind speed detection module is used to collect the wind speed and wind direction of the wind speed detection module; The vibration data, wind speed and wind direction, and the stress data on each bottom spoiler respectively control the rotation of the first rotating module corresponding to each bottom spoiler to adjust the first rotation between each bottom spoiler and the wind direction. an angle.

Description

technical field [0001] The present application relates to the technical field of intelligent monitoring, in particular to a distributed bridge eddy vibration suppression method and system based on sensory data fusion. Background technique [0002] Vortex vibration, namely vortex-induced vibration, is a wind-induced vibration phenomenon of long-span bridges under low wind speed. From the point of view of fluid, any non-streamlined object will alternately generate vortices on both sides of the object at a certain constant flow rate, leaving the surface of the structure, similar to the Karman vortex street effect. [0003] Long-span suspension bridges have vortex vibrations at low wind speeds, and the vibration amplitudes are small and difficult to detect. Only under special conditions will large amplitudes occur. Although vortex vibration will not cause catastrophic damage to bridges like flutter, frequent and continuous vortex vibration will cause fatigue damage to bridge co...

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Problems solved by technology

However, despite the windproof design in the design stage, since the bridge load will change with the traffic flow during operation, the wind speed and direction at the bridge site will also change, and the bridge structure will also undergo slight changes, which will cause bridge fundamental frequency changes, so the bridge may still suffer from severe eddy vibration

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