提速铁路无缝线路稳定性的有限元分析(英文)

Analysis of the Stability of CWR Track on Raising Speed Railway with Finite Element Method

本文用有限元方法研究了一个分析提速铁路无缝线路稳定性的模型。该模型将钢轨、轨枕、扣件及道床阻力视为一个整体,并考虑了由于温度应力产生的非线性变形。在此基础上,推导出了计算公式,并编写了相应的程序。该模型还考虑了道床的横向阻力、失效轨枕、弯轨半径以及初始弯曲变形对无缝线路的影响。

Computational model for analyzing the stability of continuously welded rail track on raising speed railway is developed by means of the finite element method in this paper, in which track panel including rails, ties, rail fastenings and ballast resistances as a whole system, and non-linear deformation behavior of rails under temperature stress are considered. Based on the model, numerical computational formulas are induced and programmed. Influences of the lateral resistances of the ballast, invalid ties and curved track radius as well as initial flexural deformations on the stability of continuously welded rail track are investigated.