城市轨道交通钢轨对地过渡电阻的检测分析

Inspection analysis of transitional resistance of rail to track in urban rail transit

杂散电流防护是城市轨道交通的主要关注点,是确保线路自身及外部建筑物不受电化学腐蚀影响的重要防护内容,当前以钢轨对地过渡电阻作为主要检测指标。文章介绍关于杂散电流防护钢轨过渡电阻方面的国内外限值要求和检测方法,对当前标准要求的局限性以及标准的发展趋势进行探讨和分析。

Stray current protection is the main concern of urban rail transit, and it is an important protection activity to ensure that the line itself and external buildings are not affected by electrochemical corrosion. At present, the transitional resistance of rail to track is the main inspection parameter. This paper introduces the limit requirements and inspection methods of stray current protection rail transitional resistance at home and abroad. It discusses and analyzes the limitations of current valid standards and the development trend of standards.