フィールドデータに基づく鉄道車両の転覆限界風速に関する検証（冬期日本海側路線での測定結果）

概要

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To clarify the overturning possibility of trains exposed to strong cross wind, several experiments were done to study the affect of the wind velocity and wind direction on the axle load changing. In this paper, the results of the experiment in the Japan Sea Coast Main Line, where the seasonal wind swept bitterly in winter, are described. Various kinds of trains, such as limited express, fright, commuter and local, were operated on the sites. To eliminate the turbulence of the wind on the sites, the 3 wind sensors were installed parallel with the track at regular intervals. As the results of the experiments, the author found that the ratio of wheel unloading caused by the wind could be more accurately expressed by the “Detailed equation” than the Kuniedas equation which was conventionally used to decide the regulation standard to prevent the train overturning by the strong cross wind in Japanese railways. Mesurement data also show that consideration of relative wind velocity and relative wind direction is important for running vehicle.