哈大高铁轨道变形与路基冻结深度的关系  

Analysis on Relationship Between Frost Depth and Track Deformation for Harbin-Dalian High Speed Railway

作　　者：刘勇[1] 

机构地区：[1]沈阳铁路局,辽宁沈阳110001

出　　处：《铁道建筑》2016年第10期79-82,共4页Railway Engineering

基　　金：铁道部科技研究开发计划(Z2012-062);中国铁路总公司科研试验任务(Z2013-038);中国铁路总公司科技研究开发计划(2014G003-A;2015G002-I;2015G006-H);铁道科学技术研究发展中心科研项目(J2014G003)

摘　　要：根据哈大高铁运营3年的观测数据,对哈大高铁轨道不均匀冻胀变形处所数量随冻结深度的变化规律进行分析,对轨道不均匀冻胀变形进行分类,并分析各类变形发生时的冻结深度。结合不同路基结构发生的轨道不均匀冻胀变形数据,分析路堤、路堑及过渡段表层、深层的轨道不均匀冻胀变形分布规律。分析结果表明,路基冻胀仅在一定深度内才会产生轨道不均匀冻胀变形。在铁路建设和维护过程中应重点控制影响轨道变形的冻结深度范围内的填料及排水。Based on the field monitoring data during three years operation of Harbin-Dalian high speed railway,the relationship between the amount of track uneven frost heave deformation and frost depth was analyzed,the track uneven frost heave was divided into different classes and the corresponding frost depth of deformation for each class was discussed.Combining with the track uneven frost heave data with different subgrade structures,the distribution laws of embankment,cutting and track uneven frost heave deformation in surface layer and deep layer of transition zone was analyzed.The results show that the subgrade frost heave will cause track uneven frost heave deformation only in a certain depth range and the fillings and drainage in frost depth range that will affect track deformation should be well controlled during the process of railway construction and maintenance.

关 键 词：哈大高铁 季节性冻土区 冻结深度 轨道不均匀冻胀 

分 类 号：U213.14[交通运输工程—道路与铁道工程]