TRACK SUPPORT STATE ESTIMATION METHOD, ITS PROGRAM, AND ESTIMATION SYSTEM

To provide a method, its program, and a system for estimating a support condition of a track based only on data measured on a vehicle.SOLUTION: It is a method for estimating a track support state in which a track skeleton with sleepers arranged at a prescribed interval along a pair of rails is suppo...

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Bibliographische Detailangaben
Hauptverfasser: KUSUDA MASAYUKI, TANAKA HIROBUMI, NISHIJIMA YUTA
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a method, its program, and a system for estimating a support condition of a track based only on data measured on a vehicle.SOLUTION: It is a method for estimating a track support state in which a track skeleton with sleepers arranged at a prescribed interval along a pair of rails is supported on a track bed. This invention: sets a target calculation section and a model calculation section for a recovery waveform measured along a rail; sets support points at equal intervals corresponding to the longitudinal direction of the rail; defines a track skeleton model in which the rail and sleepers are regarded as an integral beam member with the lower surface supported by spring elements; arranges the track skeleton model on a horizontal reference line at the height position of the highest data of the recovery waveform corresponding to the model calculation section; calculates a displacement amount for each spring element when its own weight is loaded on the beam member; and estimates the track support state by calculating additional equivalent loads to be downwardly loaded on the beam member, so that the clearance between the spring elements and the recovery waveform becomes zero.SELECTED DRAWING: Figure 4 【課題】 車上で測定されたデータのみで軌道の支持状態の推定を与える方法、そのプログラム及びシステムの提供。【解決手段】 一対のレールに沿ってまくらぎを所定間隔で配置した軌きょうを道床の上に支持させた軌道支持状態の推定方法である。この発明は、レールに沿って測定された復元波形に対して対象計算区間及びモデル計算区間を設定し、これらに等間隔に支持点をレールの長手方向に対応させて設定し、レール及びまくらぎを一体のはり部材とみなしてこの下面をバネ要素にて支持する軌きょうモデルを定義し、モデル計算区間に対応する復元波形の最高位データの高さ位置の水平基準線上に軌きょうモデルを配置し、上記はり部材にその自重が載荷されたときのバネ要素ごとの変位量を演算し、バネ要素と復元波形との間の隙間がゼロとなるように、はり部材に下向きに載荷されるべき追加的な相当荷重をそれぞれ算出することにより、軌道支持状態を推定する。【選択図】図4