BRIDGE DEFLECTION MEASURING METHOD, BRIDGE DEFLECTION MEASURING DEVICE, AND BRIDGE DEFLECTION MEASURING PROGRAM

To provide a bridge deflection measuring method capable of easily measuring the deflection of a bridge from a moving body side moving on the bridge, its deflection measuring device, and a bridge deflection measuring program.SOLUTION: A deflection measurement method #100 is a method of measuring the deflection of a bridge on which a train moves, and calculates the deflection of the bridge based on the measurement result of a track displacement measurement device that measures the track displacement on the bridge. The track displacement measuring device measures the passage displacement in front of and behind the train. A deflection calculation process #120 calculates the bridge deflection based on the measurement result of the track displacement measuring device in front of the train and the measurement result of the track displacement measuring device behind the train. The track displacement measuring device measures track displacement at a load position where a train applies a load to a bridge. The deflection calculation process #120 calculates the bridge deflection based on the difference between the track displacement measured by the track displacement measuring device in front of the train and the track displacement measured by the track displacement measuring device behind the train.SELECTED DRAWING: Figure 8 【課題】橋梁上を移動する移動体側からこの橋梁のたわみを簡単に測定することができる橋梁のたわみ測定方法とそのたわみ測定装置、及び橋梁のたわみ測定プログラムを提供する。【解決手段】たわみ測定方法＃１００は、列車が移動する橋梁のたわみを測定する方法であり、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、この橋梁のたわみを演算する。軌道変位測定装置は、列車の前方及び後方で通路変位を測定する。たわみ演算工程＃１２０は、列車の前方の軌道変位測定装置の測定結果と、この列車の後方の軌道変位測定装置の測定結果とに基づいて、橋梁のたわみを演算する。軌道変位測定装置は、列車が橋梁に荷重を作用させる荷重位置における軌道変位を測定する。たわみ演算工程＃１２０は、列車の前方の軌道変位測定装置が測定する軌道変位と、列車の後方の軌道変位測定装置が測定する軌道変位との差分に基づいて、橋梁のたわみを演算する。【選択図】図８