A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
BRIDGE DYNAMIC RESPONSE EVALUATION METHOD
PROBLEM TO BE SOLVED: To provide a bridge dynamic response evaluation method capable of evaluating a dynamic response/evaluating soundness of a bridge, by determining an impact coefficient of the bridge, without executing deflection measurement work, by using an index based on a vertical acceleration response of a vehicle, by paying attention to a vehicle acceleration response of a train for traveling on the bridge.SOLUTION: An accelerometer for measuring vertical acceleration is respectively provided in the forefront vehicle and the rearmost vehicle of a train, and the vertical acceleration of the forefront vehicle and the rearmost vehicle in traveling is measured. Measurement data of the accelerometer when passing through a bridge is extracted, and an acceleration amplification factor is calculated by dividing a feature quantity of a waveform of the vertical acceleration measured by the accelerometer of the rearmost vehicle by a feature quantity of the vertical acceleration measured by the forefront vehicle. An impact coefficient of the bridge is calculated by applying an acceleration amplification coefficient to the relationship between the predetermined impact coefficient of the bridge and the acceleration amplification coefficient.SELECTED DRAWING: Figure 2
【課題】橋梁上を走行する列車の車両加速度応答に着目し、車両の上下加速度応答に基づく指標を用いることにより、たわみ測定作業を行うことなく橋梁の衝撃係数を求め、動的応答の評価／橋梁の健全性の評価を行うことを可能にする橋梁動的応答評価方法を提供する。【解決手段】列車の先頭車両と最後尾車両にそれぞれ上下加速度を計測する加速度計を設け、走行時の先頭車両と最後尾車両の上下加速度を計測する。そして、橋梁通過時の加速度計の計測データを抽出し、最後尾車両の加速度計で計測した上下加速度の波形の特徴量を、先頭車両で計測した上下加速度の特徴量で除して加速度増幅率を算出する。また、予め求めた橋梁の衝撃係数と加速度増幅係数の関係に加速度増幅係数を当てはめて橋梁の衝撃係数を算出する。【選択図】図２
BRIDGE DYNAMIC RESPONSE EVALUATION METHOD
PROBLEM TO BE SOLVED: To provide a bridge dynamic response evaluation method capable of evaluating a dynamic response/evaluating soundness of a bridge, by determining an impact coefficient of the bridge, without executing deflection measurement work, by using an index based on a vertical acceleration response of a vehicle, by paying attention to a vehicle acceleration response of a train for traveling on the bridge.SOLUTION: An accelerometer for measuring vertical acceleration is respectively provided in the forefront vehicle and the rearmost vehicle of a train, and the vertical acceleration of the forefront vehicle and the rearmost vehicle in traveling is measured. Measurement data of the accelerometer when passing through a bridge is extracted, and an acceleration amplification factor is calculated by dividing a feature quantity of a waveform of the vertical acceleration measured by the accelerometer of the rearmost vehicle by a feature quantity of the vertical acceleration measured by the forefront vehicle. An impact coefficient of the bridge is calculated by applying an acceleration amplification coefficient to the relationship between the predetermined impact coefficient of the bridge and the acceleration amplification coefficient.SELECTED DRAWING: Figure 2
【課題】橋梁上を走行する列車の車両加速度応答に着目し、車両の上下加速度応答に基づく指標を用いることにより、たわみ測定作業を行うことなく橋梁の衝撃係数を求め、動的応答の評価／橋梁の健全性の評価を行うことを可能にする橋梁動的応答評価方法を提供する。【解決手段】列車の先頭車両と最後尾車両にそれぞれ上下加速度を計測する加速度計を設け、走行時の先頭車両と最後尾車両の上下加速度を計測する。そして、橋梁通過時の加速度計の計測データを抽出し、最後尾車両の加速度計で計測した上下加速度の波形の特徴量を、先頭車両で計測した上下加速度の特徴量で除して加速度増幅率を算出する。また、予め求めた橋梁の衝撃係数と加速度増幅係数の関係に加速度増幅係数を当てはめて橋梁の衝撃係数を算出する。【選択図】図２
BRIDGE DYNAMIC RESPONSE EVALUATION METHOD
橋梁動的応答評価方法
MATSUOKA KOTA (author) / WATANABE TSUTOMU (author) / SOGABE MASAMICHI (author) / SANTO TETSUO (author) / SHINDO YOSHINORI (author)
2017-01-26
Patent
Electronic Resource
Japanese
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