RESONANCE DETECTION METHOD FOR BRIDGE AND RESONANCE DETECTION DEVICE FOR THE SAME AND BRIDGE RESONANCE DETECTION PROGRAM

To provide a resonance detection method for a bridge and resonance detection device for the same enabling the resonance of the bridge to be accurately detected based on a passageway displacement measurement result, and to provide a bridge resonance detection program.SOLUTION: A resonance detection method #100 is a method for detecting the resonance of a bridge on which a train moves. The resonance of a bridge is detected based on a result of measurement performed by a track displacement measurement device measuring the track displacement on the bridge. The track displacement measurement device measures the passage displacement in a leading vehicle and a trailing vehicle. In a vibration component extraction step #110, a vibration component specific to the resonance of the bridge is extracted based on the result of the measurement performed by the track displacement measurement device. In a vibration amplitude estimation step #120, the amplitude of the vibration component specific to the resonance of the bridge is estimated. In a difference calculation step #130, the difference in the amplitude of the vibration component specific to the resonance of the bridge measured in the leading vehicle and the trailing vehicle is calculated. In a resonance detection step #140, the resonance of the bridge is detected based on the difference in the amplitude of the vibration components specific to the resonance of the bridge.SELECTED DRAWING: Figure 13 【課題】通路変位の測定結果に基づいて橋梁の共振を正確に検出することができる橋梁の共振検出方法とその共振検出装置及び橋梁の共振検出プログラムを提供する。【解決手段】共振検出方法＃１００は、列車が移動する橋梁の共振を検出する方法であり橋梁上の軌道変位を測定する軌道変位測定装置の測定結果に基づいてこの橋梁の共振を検出する。軌道変位測定装置は、先頭車両及び後尾車両で通路変位を測定する。振動成分抽出工程＃１１０では、軌道変位測定装置の測定結果に基づいて、共振橋梁に特有の振動成分を抽出する。振動振幅推定工程＃１２０では、共振橋梁に特有の振動成分の振幅を推定する。差分演算工程＃１３０では、先頭車両及び後尾車両で測定される共振橋梁に特有の振動成分の振幅の差分を演算する。共振検出工程＃１４０では、共振橋梁に特有の振動成分の振幅の差分に基づいて橋梁の共振を検出する。【選択図】図１３