Abstract：Research purposes: The paper aimed at resolving the stability of continuous welded rail (CWR) under temperature forces by the finite element method, especially for minor-radius-curve CWR.
Research methods: A track-frame model has been developed, which includes rails, pads, sleepers and ballast resistance, and the finite element program has been exploited using numerical formulation. The influence of cross force was also considered in this model.
Research results: The dependence of the CWR displacement on temperature figures in different work conditions were arrived, and the result was compared with the result of universal formulation.
Research conclusions: Finite element method is effective on analyzing the stability of CWR. And it can analyze the lateral displacement of CWR track from locked-in temperature to damage. Compared with the universal formulation, the method can accurately present the trend of the lateral displacement of track in several work conditions, and provide an evidential material for railway department in planning of maintaining the track.
罗信伟，雷晓燕，冯青松. 小半径曲线无缝线路稳定性有限元分析[J]. 铁道工程学报, 2006, 23(3): 8-12.
LUO Xin-wei, LEI Xiao-yan, FENG Qing-song. Finite Element Method for Analyzing the Stability of Continuous Welded Rail Track on Minor Radius Curve. 铁道工程学报, 2006, 23(3): 8-12.
2006, Vol. 23 
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