铁道标准设计Issue(3)：16-18,28,4.DOI:10.13238/j.issn.1004-2954.2016.03.004
单元双块式无砟轨道道床板温度翘曲变形的影响研究
Study on Warping Deformation of Slab in Unit Twin-block Ballastless Track
摘要
Abstract
Warping deformation of track slab under the effect of temperature gradient may do some harm to track geometry and even endanger traffic safety. In this paper, the finite element method is adopted to establish a calculation model of unit twin-block ballastless track to explore warping deformation of the slab under the effect of temperature gradient and its impact on track geometry. Results show that large warping deformation of slab under positive temperature may endanger traffic safety and measures should be taken to control it. However, under negative temperature, warping deformation of slab is so small that it can be ignored.关键词
双块式无砟轨道/温度梯度/翘曲变形/轨道几何形位Key words
Twin-block ballastless track/Temperature gradient/Warping deformation/Track geometry分类
交通工程引用本文复制引用
付娜,刘钰,李成辉..单元双块式无砟轨道道床板温度翘曲变形的影响研究[J].铁道标准设计,2016,(3):16-18,28,4.基金项目
中国铁路总公司科技研究开发计划课题(2013G004-B) （2013G004-B）
