青藏铁路格拉段无缝线路状态指标试验研究
发布时间：2018-06-25
点击次数：
发表刊物：铁道工程学报
关键字：Golmud—Lhasa Section of Qinghai—Tibet Railway；permafrost regions；continuously welded rails；state index；monitoring system
摘要：Research purposes：Golmud—Lhasa Section of Qinghai—Tibet Railway in permafrost zone has many unique characteristics，such as low temperature and oxygen，changeable climate，indiscernible four seasons，big day／night temperature difference，long annual negative temperature，stronger solar radiation，more steep gradients，thicker ballast bed，more thawing settlement of subgrade and SO on，which are different to the value and variation laws of state index of CWR．So it is very important and urgent to study the value and variation laws of state index． Research conclusions：(1)The monitoring system for state index of CWR on plateau railway in permafrost zone was developed．This system can gather the temperature and displacement at the same time，and realize the lasting observation and automatic data storage of rail displacement，bridge beam displacement，air temperature，rail temperature and bridge beam temperature．(2)With the CWR monitoring system lay in the permafrost zone，the rail and beam temperature difference value and change laws were revealed．Longitudinal and lateral displacement of rail，relative displacement between beam and rail and beam—ends were evaluated too．(3)It iS proved that the CWR in the permafrost zone is stable and reliable．(4)The research results can be applied in the state monitoring of CWR，and it also has important reference value in ballastless track construction and experimental research on the stability CWR．
合写作者：高亮, 崔日新, 曾志平, 陈宪麦
第一作者：张向民
论文类型：期刊论文
文献类型：J
卷号：33
期号：05
页面范围：25-31+36
是否译文：否