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A platform for research: civil engineering, architecture and urbanism
BRIDGE CONDITION EVALUATION METHOD AND CONDITION EVALUATION SYSTEM THEREOF
To provide a bridge condition evaluation method capable of precisely evaluating bridge condition while separating vibration components caused by the moving body moving on the bridge and a condition evaluation system thereof.SOLUTION: The condition evaluation method is a method for evaluating the condition of a bridge. In a mode characteristic estimation step, the mode characteristics of the bridge are estimated by separating the vibration component caused by the train from the vibration component of this bridge based on the displacement waveform of the bridge when the train moves on the bridge. In a condition evaluation step, the condition of the bridge is evaluated based on the mode characteristics of the bridge. In the condition evaluation step, the condition of the bridge is evaluated based on the amount Δf of decrease in the natural frequency of the bridge when the train moves on the bridge. In the condition evaluation step, the condition of the bridge is evaluated based on the amount Δξ of increase of the mode attenuation ratio of the bridge when the train moves on the bridge. The state evaluation step evaluates cracks of the bridge.SELECTED DRAWING: Figure 8
【課題】橋梁を移動する移動体による加振成分を分離して橋梁の状態を正確に評価することができる橋梁の状態評価方法とその状態評価装置を提供する。【解決手段】状態評価方法は、橋梁の状態を評価する方法である。モード特性推定工程は、橋梁を列車が移動するときのこの橋梁の変位波形に基づいて、この列車がこの橋梁を加振する加振成分をこの橋梁の振動成分から分離して、この橋梁のモード特性を推定する。状態評価工程は、橋梁のモード特性に基づいてこの橋梁の状態を評価する。状態評価工程は、橋梁を列車が移動するときのこの橋梁の固有振動数の低下量Δｆに基づいて、この橋梁の状態を評価する。状態評価工程は、橋梁を列車が移動するときのこの橋梁のモード減衰比の上昇量Δξに基づいて、この橋梁の状態を評価する。状態評価工程は、橋梁のひび割れを評価する。【選択図】図８
BRIDGE CONDITION EVALUATION METHOD AND CONDITION EVALUATION SYSTEM THEREOF
To provide a bridge condition evaluation method capable of precisely evaluating bridge condition while separating vibration components caused by the moving body moving on the bridge and a condition evaluation system thereof.SOLUTION: The condition evaluation method is a method for evaluating the condition of a bridge. In a mode characteristic estimation step, the mode characteristics of the bridge are estimated by separating the vibration component caused by the train from the vibration component of this bridge based on the displacement waveform of the bridge when the train moves on the bridge. In a condition evaluation step, the condition of the bridge is evaluated based on the mode characteristics of the bridge. In the condition evaluation step, the condition of the bridge is evaluated based on the amount Δf of decrease in the natural frequency of the bridge when the train moves on the bridge. In the condition evaluation step, the condition of the bridge is evaluated based on the amount Δξ of increase of the mode attenuation ratio of the bridge when the train moves on the bridge. The state evaluation step evaluates cracks of the bridge.SELECTED DRAWING: Figure 8
【課題】橋梁を移動する移動体による加振成分を分離して橋梁の状態を正確に評価することができる橋梁の状態評価方法とその状態評価装置を提供する。【解決手段】状態評価方法は、橋梁の状態を評価する方法である。モード特性推定工程は、橋梁を列車が移動するときのこの橋梁の変位波形に基づいて、この列車がこの橋梁を加振する加振成分をこの橋梁の振動成分から分離して、この橋梁のモード特性を推定する。状態評価工程は、橋梁のモード特性に基づいてこの橋梁の状態を評価する。状態評価工程は、橋梁を列車が移動するときのこの橋梁の固有振動数の低下量Δｆに基づいて、この橋梁の状態を評価する。状態評価工程は、橋梁を列車が移動するときのこの橋梁のモード減衰比の上昇量Δξに基づいて、この橋梁の状態を評価する。状態評価工程は、橋梁のひび割れを評価する。【選択図】図８
BRIDGE CONDITION EVALUATION METHOD AND CONDITION EVALUATION SYSTEM THEREOF
橋梁の状態評価方法とその状態評価装置
MATSUOKA KOTA (author)
2021-07-01
Patent
Electronic Resource
Japanese
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