（中国航空规划建设发展有限公司，北京 100120）
［摘要］火箭橇滑轨是航空工业重要的试验设施，要求具有高精度。由于轨道上滑车运行速度极高，除精度外还要求轨道焊接成数公里长且不留任何缝隙，保证轨道必须始终处于张紧受拉的状态。重点介绍采用有限元法建立滑轨整体结构分析模型，分析了最大温差时长轨温度应力分布以及基础、支座、连接件受力，验证现有轨道的安全性，并以计算结果为依据为轨道扩建提供方案。
［关键词］火箭橇滑轨；温度应力；有限元分析；无缝轨道
Temperature stress analysis of high accuracy rocket sled rail
Jia Jie, Li Jing(China Aviation Planning and Construction Development Co., Ltd., Beijing 100120, China)
Abstract:The rocket sled rail is the important experiment facility to the aviation industry. A long high accuracy rocket rail has already been built. Since the running rate of pulley is extremely high on the rail, except accuracy, it is required that the rail welding round kilometers long not to keep any gap. These will ensure that the rail must be in the tension state all the time. The finite-element model is built for entirety structure of the rail by ANSYS. The temperature stress distribution at the long rail as well as the foundation, the support and the bridge piece at the maximum temperature difference is analyzed. The securities of the rail that has been built are verified. A scheme for the rail to expand on the basis of the calculation and analysis is provided.
Keywords:rocket sled rail; temperature stress; finite element analysis; seamless rail
作者简介：贾洁，女，高级工程师，Email:jiajiejj@sina.com。
参考文献
［1］韩振江，张建平. 051基地火箭滑车轨道设计要点分析［J］. 中国铁路，2004，(11).