To provide a method for selecting a rail cross-sectional shape by which the rail cross-sectional shape capable of suppressing the occurrence of a crack.SOLUTION: A method for selecting a rail cross-sectional shape comprises: a first step of selecting a railroad section condition including at least a curve radius of a track, a wheel shape of a train traveling on the track, and the traveling speed of the train; a second step of selecting a cross-sectional shape of each of a plurality of rails for reducing a contact surface pressure between a wheel and the rail by wear progress analysis using the selected railroad section condition; a third step of calculating respective fatigue indexes by applying all the railroad section conditions selected in the first step to all the selected cross-sectional shapes of the rails; a fourth step of summing up the fatigue indexes by all the railroad section conditions for each cross-sectional shape calculated in the third step; and a fifth step of selecting the cross-sectional shape having the smallest total value.SELECTED DRAWING: Figure 1
【課題】き裂の発生を抑制することができるレール断面形状を選定するレール断面形状の選定方法を提供する。【解決手段】少なくとも軌道の曲線半径、軌道を走行する列車の車輪形状及び、前記列車の走行速度を含む線区条件を選定する第1工程と、選定した前記線区条件を用いて、摩耗進展解析によって車輪とレールの接触面圧が緩和する複数のレールの断面形状を選定する第2工程と、前記選定された全てのレールの断面形状に対して、前記第1工程で選定された全ての線区条件を適用してそれぞれの疲労指数を算出する第3工程と、前記第第3工程で算出された各断面形状ごとの全ての線区条件による疲労指数の和を総計する第4工程と、前記総計された値が最も小さい断面形状を選定する第5工程と、を含む。【選択図】図1
RAIL CROSS-SECTIONAL SHAPE SELECTION METHOD
レール断面形状の選定方法
2023-06-14
Patent
Electronic Resource
Japanese
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