レール折損時における応急処置後の列車徐行速度向上の可能性

摘要

Slow running speed of train on track installing emergency rail cramp at a spot of rail failure was decided empirically and the ground has not been made clear. Therefore, we carried out field tests, laboratory test on track installing emergency rail cramp of Yasuda-type, and also static loading tests in a laboratory on track installing emergency fish-plating apparatus. Vehicle running safety and strength of track components were studied based on the tests results. As a result, we clarified that the maximum 70km/h slow running speed was allowable on the meter gaged long welded track installing those emergency apparatuses in the tangent or the curved sections of over 500m radius.%レール折損時の列車の徐行運転は，列車遅延・運休のrn原因の一つとなっている。レール応急処置を施した場合rnの列車の徐行運転速度は経験的に決められており，そのrn根拠はかならずしも明確ではない。また，レールが横裂rnで折損した箇所に横裂用レール応急処置器を取り付けたrn場合の列車通過時の車両・軌道の挙動および部材強度はrn明確にされていなかった。