钢轨接头是线路的薄弱环节,这是因为钢轨在接头处中断,用鱼尾板连结其强度不可能与钢轨本身的强度相当。因此,当列车通过接头时由于轨缝的存在和轨面折角的形成,加剧了对线路的打击作用,加速了线路的破坏,这是造成线路接头病害的主要原因,也是接头本身构造所决定的。 Rail joints are the weakest link because the rail breaks at the joint and the strength of the rail joint can not be as strong as the rail itself. Therefore, when the train passes through the joint, the existence of the rail seam and the formation of the angling of the rail surface aggravate the attack on the circuit and accelerate the destruction of the circuit, which is the main reason for the line joint damage and also the construction of the joint itself .