前言在新干线列车运行时速高达210km的条件下,作为直接承受列车荷载的钢轨,就其损伤对策而言,要求有高度的技术管理水平。东海道新干线在十年运营期间,钢轨损伤多发生于50T型钢轨铝热焊焊缝处。直至1973年,累计通过运量约1.8亿吨时,在焊缝以外 Preface As a rail that directly receives train loads under the condition that the Shinkansen train runs at a speed of up to 210km / h, it requires a high level of technical management in terms of its damage countermeasures. During the ten-year operation of the Tokaido Shinkansen, the rail damage occurred in the weld of the 50T rail aluminum heat weld. Until 1973, a total of about 180 million tons of traffic passed, outside the weld