无缝线路临界温升的计算方法

THE METHOD OF COMPUTATION FOR CRITICAL TEMPERATURE RANGE OF RAILWAY TRACK

建立了计算无缝线路临界温升的有限元法。为了便于应用本法，导出了道床、扣件的扭转刚度。对具有不同结构参数的轨道结构，研究了由于钢轨温度升高引起的结构稳定性问题。分析结果表明，本文方法具有一定的实用价值。

The mechanical model of finite element method for critical temperature range of railwaytrack is put forward in this paper.In order to use this method conveniently,twist stiffnessesof roadbed and fastener are derived then。The stability of railway track, due to temperaturerising,is analysed in the light of different structural parameters。The results shows that amore effective approach is developed。