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A platform for research: civil engineering, architecture and urbanism
BRIDGE VIBRATION SUPPRESSING SYSTEM AND BRIDGE VIBRATION SUPPRESSING METHOD
To reliably suppress vibration regardless of the lengths of parallel wire ropes supporting bridge girders.SOLUTION: A bridge vibration suppressing system has a main tower, a bridge girder, and a plurality of wire ropes that are arranged in parallel between a main tower and a bridge girder and that supports the bridge girder by the main tower, the bridge vibration suppressing system further has: a wind direction sensor and speed sensor that are provided in the main tower or bridge girder and measure wind direction and wind speed; vibration sensors that are provided on each of the wire ropes and measure the vibration displacement of the wire rope; a plurality of plasma actuators that are provided on the surface of each of the wire ropes; a drive portion that drives the plasma actuators, and a control portion, the control portion identifies a first wire rope from the wire ropes whose displacement exceeds a predetermined threshold value based on the measurement results of the vibration sensor, identifies a second wire rope that is provided upwind of the first wire rope based on the measurement results of the wind direction and speed sensor, and drives at least one of the plasma actuators provided in the second wire rope by the drive portion.SELECTED DRAWING: Figure 7
【課題】橋桁を支える並列のワイヤロープの長さに因らず、発生する振動を確実に抑制する。【解決手段】主塔と橋桁との間で、橋桁を主塔で支える並列に配置された複数のワイヤロープと、を有する橋梁の制振システムは、主塔又は橋桁に配置され、風向及び風速を測定する風向風速センサと、ワイヤロープのそれぞれに配置され、ワイヤロープの振動の変位を測定する振動センサと、ワイヤロープの各々の表面に複数配置されたプラズマアクチュエータと、プラズマアクチュエータを駆動する駆動部と、制御部と、を有し、制御部は、振動センサの測定結果に基づき、複数のワイヤロープの中から変位が所定の閾値を超えた第１ワイヤロープを特定し、風向風速センサの測定結果に基づいて第１ワイヤロープより風上に配置された第２ワイヤロープを特定し、第２ワイヤロープに配置されたプラズマアクチュエータの少なくとも一つを駆動部で駆動する。【選択図】図７
BRIDGE VIBRATION SUPPRESSING SYSTEM AND BRIDGE VIBRATION SUPPRESSING METHOD
To reliably suppress vibration regardless of the lengths of parallel wire ropes supporting bridge girders.SOLUTION: A bridge vibration suppressing system has a main tower, a bridge girder, and a plurality of wire ropes that are arranged in parallel between a main tower and a bridge girder and that supports the bridge girder by the main tower, the bridge vibration suppressing system further has: a wind direction sensor and speed sensor that are provided in the main tower or bridge girder and measure wind direction and wind speed; vibration sensors that are provided on each of the wire ropes and measure the vibration displacement of the wire rope; a plurality of plasma actuators that are provided on the surface of each of the wire ropes; a drive portion that drives the plasma actuators, and a control portion, the control portion identifies a first wire rope from the wire ropes whose displacement exceeds a predetermined threshold value based on the measurement results of the vibration sensor, identifies a second wire rope that is provided upwind of the first wire rope based on the measurement results of the wind direction and speed sensor, and drives at least one of the plasma actuators provided in the second wire rope by the drive portion.SELECTED DRAWING: Figure 7
【課題】橋桁を支える並列のワイヤロープの長さに因らず、発生する振動を確実に抑制する。【解決手段】主塔と橋桁との間で、橋桁を主塔で支える並列に配置された複数のワイヤロープと、を有する橋梁の制振システムは、主塔又は橋桁に配置され、風向及び風速を測定する風向風速センサと、ワイヤロープのそれぞれに配置され、ワイヤロープの振動の変位を測定する振動センサと、ワイヤロープの各々の表面に複数配置されたプラズマアクチュエータと、プラズマアクチュエータを駆動する駆動部と、制御部と、を有し、制御部は、振動センサの測定結果に基づき、複数のワイヤロープの中から変位が所定の閾値を超えた第１ワイヤロープを特定し、風向風速センサの測定結果に基づいて第１ワイヤロープより風上に配置された第２ワイヤロープを特定し、第２ワイヤロープに配置されたプラズマアクチュエータの少なくとも一つを駆動部で駆動する。【選択図】図７
BRIDGE VIBRATION SUPPRESSING SYSTEM AND BRIDGE VIBRATION SUPPRESSING METHOD
橋梁の制振システム、及び橋梁の制振方法
SUGIMOTO KOSUKE (author)
2024-10-09
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken
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