青藏铁路道床质量状态参数试验研究  

Experimental study on the quality state parameter of ballast in Qinghai-Tibet railway

作　　者：张向民[1] 陈秀方[1] 曾志平[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075

出　　处：《铁道科学与工程学报》2007年第3期64-67,共4页Journal of Railway Science and Engineering

基　　金：铁道部科技开发计划项目(2004G05-A)

摘　　要：碎石道床是铁路有碴轨道结构的重要组成部分,其道床密实度、道床纵、横向阻力不仅是轨道结构分析的重要参数,并且与轨道几何形位劣化和轨道养护维修工作量有密切关系。在气候条件恶劣的青藏铁路,道床密实度、道床纵、横向阻力是否达到设计要求对于保持线路的稳定十分重要。介绍了青藏铁路无缝线路试验段道床密实度、道床纵、横向阻力的试验方法和数据整理分析过程,对道床密实度、道床纵、横向阻力的测定有一定的参考价值。测试结果表明,在青藏铁路,采用合理的施工工艺和方法,按基本作业流程进行施工,道床密实度、道床纵、横向阻力均满足规范要求。Stone ballast plays an important role in ballasted track of railway. Ballast density and resistance are an important parameter for the analysis of track structure and it has close relations with rapid deterioration of the quality of the track geometry as well as the amount of work in railway track maintenance. Ballast density and resistance are more incumbent on the stability of tracks in Qinghai- Tibet railway under frosty conditions with big difference in tempera- ture. In the paper, the methods of test and analysis on the data of ballast density and resistance were described. There are useful references to tests of ballast resistance. The results show that the data of ballast density and resistance can meet the requirement of the relative criteria by adopting reasonable construction technology and method.

关 键 词：铁路轨道 道床密实度 道床纵向阻力 道床横向阻力 

分 类 号：U213.722[交通运输工程—道路与铁道工程]