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列车时速大幅提高,车轮通过钢轨接头时对接头处的轮轨垂直冲量和纵横向作用力明显增加。要保证线路的安全、高速、平稳性等指标,必须对钢轨接头的抗冲击、抗剪切、抗疲劳等综合技术指标也做出相应的提高,同时还要满足轨道电路的绝缘、电容和耐高电压等特性要求。这些均给钢轨现场胶接绝缘接头提出了更新、更高的指标要求。
The train speed is greatly increased. When the wheel passes the rail joint, the vertical momentum of the wheel rail and the vertical and horizontal forces at the joint are obviously increased. To ensure the safety, high speed, stability and other indicators, rail joints must be the impact, shear, fatigue and other comprehensive technical indicators also make a corresponding increase, but also to meet the track circuit insulation, capacitance and resistance High voltage characteristics such as requirements. These are the rail site adhesive plastic joints proposed newer, higher index requirements.