轨温差超100 ℃地区铺设无缝线路可行性分析

Feasibility analysis of laying continuously welded rail track in areas with rail temperature difference exceeding 100℃

为解决无缝线路在高寒大温差地区适应性难题,实现无缝线路在高寒地区更好推广应用,基于东北地区某铁路,研究了在轨温差超过100℃的地区铺设无缝线路的可行性,并研究了适合该区域的最小曲线半径,提出了曲线加强措施。研究结果表明:在轨温差超100℃的地区铺设无缝线路可行,该地区最小曲线半径为800 m,可通过控制温升,增强道床横向阻力,增大曲线地段无缝线路的稳定性安全储备量。

To solve the adaptability problem of continuously welded rail track in high cold and large temperature difference regions,and achieve better promotion of continuously welded rail track in high cold regions.This article is based on a certain railway in Northeast China,and studies the feasibility of laying continuously welded rail track in the area with a temperature difference exceeding 100℃.It also studies the minimum curve radius suitable for the area and proposes curve strengthening measures.The research results indicate that it is feasible to lay continuously welded rail track in the area where the temperature difference between tracks exceeds 100℃.The minimum curve radius in this area is 800 m,which can be controlled to increase the lateral resistance of the track bed and increase the stability and safety reserve of seamless tracks in curve sections.