无缝线路温度力的分布与变化规律

Distribution and Change Regulation of Temperature Force in Continuously-Welded Rails

无缝线路是铁路轨道结构的发展方向,在我国铁路上已铺设了三万多公里,其特点是钢轨内部存在温度力.温度力对轨道结构是一种破坏力,准确掌握无缝线路钢轨内温度力的分布与变化规律,对无缝线路轨道的设计、铺设、养护维修及保证铁路行车安全都有非常重要的意义.利用温度力图可系统地分析在不同状态下无缝线路钢轨内部温度力的分布与变化规律.

This paper discusses and analyzes the distribution and change regulation of temperature force in continuously- welded rails under different conditions via diagrams. Continuously - welded rails are widely applied in railway layout which at present range over 30 thousand kilometers in China. Continuously - welded rails are characterized with a temperature force derived from inside rails which can bring out damage to the rail structure. An accurate detection of change and distribution of temperature force in continuously - welded rails is much of significance for design, layout, maintenance of such railways and ensuring safety of railway communication.