铁道标准设计2017，Vol.61Issue(10)：24-27,4.DOI:10.13238/j.issn.1004-2954.2017.10.006
温度梯度荷载对桥上无砟轨道几何形位的影响分析
Study on the Influence of Temperature Gradient Load on the Geometry of Ballastless Track on Bridge
朱禹 1李成辉 1付娜 1肖真诚 1霍新伟1
作者信息
- 1. 西南交通大学高速铁路线路工程教育部重点实验室,成都610031
- 折叠
摘要
Abstract
According to the relevant codes about CWR of China,the temperature load applied on bridge is uniform,which is somewhat different from the temperature gradient load in natural environment.Based on the principle of interaction between beam and rail and the use of the finite element method,the model of CRTSⅢ slab ballastless track on bridge is established and the influences of the deformation of the bridge generated by the uniform temperature and the vertical temperature gradient on the geometry of ballastless track on bridge are calculated respectively,which is beneficial to further study and rational selection of bridge temperature load.The results show that in comparison with the uniform temperature load,the vertical temperature gradient on bridge imposes greater influence on the ballastless track geometry,affects mainly the longitudinal level of ballastless track and also has some influence on level geometry.Thus,when designing the CWR on bridge,it is recommended to consider the temperature gradient load on bridge and confine the ballastless track geometry.关键词
铁路桥/无砟轨道/均匀温度荷载/温度梯度/几何形位Key words
Railway bridge/Ballastless track/Uniform temperature load/Temperature gradient/Geometry分类
交通工程引用本文复制引用
朱禹,李成辉,付娜,肖真诚,霍新伟..温度梯度荷载对桥上无砟轨道几何形位的影响分析[J].铁道标准设计,2017,61(10):24-27,4.
