摘要
为研究轨道横向不平顺对无缝线路变形的影响,建立三维轨道框架非线性有限元模型,计算轨道框架处于内外轨温差、单轨单节点轨向不平顺、单轨双节点轨向不平顺、双轨双节点轨向不平顺等不同工况条件下的钢轨节点位移,分析轨道横向不平顺与轨道框架稳定性之间的关系。分析结果表明,当钢轨发生单轨双节点同向偏移时,钢轨节点位移变化最显著。在线路养护维修中应注意轨道的横向不平顺,特别是同侧钢轨发生2次同向不平顺。
In order to study the inf luence of track lateral irregularity on the continuous welded rail(CWR)deformation,a nonlinear finite element model of 3D track frame was established,and the rail node displacement was calculated when the track frame was transversely dislocated.The relationship between track lateral irregularity and track frame stability was analyzed.The study was under different conditions,such as temperature difference between internal and external rails,monorail single node rail irregularity,monorail dual nodes rail irregularity,dual rails dual nodes rail irregularity,etc.The results show that the change of rail node displacement is most remarkable when the two nodes of the same side move in the same direction.In the maintenance of track,the lateral irregularity of track should be paid special attention,especially,two times of the same direction irregularity occurring on the same rail.
作者
周海宇
韩峰
牟航
ZHOU Haiyu;HAN Feng;MU Hang(Faculty of Civil Engineering,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China;Faculty of Geomatics,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China)
出处
《铁道建筑》
北大核心
2018年第7期116-120,共5页
Railway Engineering
基金
国家自然科学基金(51568037)
关键词
无缝线路
轨道横向不平顺
有限元分析
变形分析
稳定性
CWR
Track lateral irregularity
Finite element analysis
Deformation analysis
Stability
作者简介
第一作者:周海宇(1994—),男,硕士研究生。E-mail:925534773@qq.com。;通信作者:韩峰(1975—),男,教授,博士。E-mail:153025377@qq.com。
