摘要
为探究再生复合轨枕有砟轨道的疲劳特性,建立了有砟轨道结构足尺模型,开展疲劳试验,测试并分析了不同荷载循环次数下的钢轨-轨枕相对位移、轨距、轨枕-道床垂向相对位移和道床下沉量等参数及其变化规律。研究结果表明:所测试的参数均随荷载循环次数的增加而变化,当荷载循环次数达到150万次后趋于稳定;再生复合轨枕具有良好的弹性,减小了道床下沉量;再生复合轨枕有砟轨道300万次疲劳荷载后仍能保持良好的轨道状态,具有良好的耐久性。
To investigate the fatigue performance of the recycled composite sleeper(RCS)ballasted track,a full-scale model of ballasted track was eatablished and fatigue tests were conducted.The relative displacement of rail and sleeper,gauge,the relative vertical displacement of sleeper and ballast bed and subsidence of ballast bed were measured and the change rules of the parameters with the number of load cycles were analyzed.The results show that the tested parameters all change with the increase in the number of load cycles,and tend to stabilize after reaching 1.5 million cycles.The RCSs have good elasticity,which reduces the subsidence of the ballast bed.The RCS ballasted track can still maintain good condition after 3 million cycles,which indicates that the RCS ballasted track has good durability.
作者
徐铁华
XU Tiehua(The Development Co.,Ltd.,of the Shuo-Huang Railway of National Energy Group,Suning 062350,China)
出处
《国防交通工程与技术》
2024年第1期29-32,共4页
Traffic Engineering and Technology for National Defence
基金
河北省重点研发计划(20375410D)
国能朔黄铁路发展有限责任公司科技创新项目(SHTL-2020-08)。
关键词
再生复合轨枕
疲劳性能
有砟轨道
足尺模型
钢轨
轨枕
道床
recycled composite sleeper
fatigue performance
ballasted track
full-scale model
rail
sleeper
ballast bed
