米轨混凝土轨枕与钢枕道床阻力研究  

Study on Resistance of Meter Gauge Concrete Sleeper and Steel Sleeper Ballast Bed

作　　者：蔡元辉 张沐然 韩义涛[2] 熊维[2] 韦凯[1] CAI Yuanhui;ZHANG Muran;HAN Yitao;XIONG Wei;WEI Kai(MOE Key Laboratory of High-speed Railway Engineering,Southwest Jiaotong University,Chengdu 610031,China;China Railway Eryuan Engineering Group Co.Lud.,Chengdu 610031,China)

机构地区：[1]西南交通大学高速铁路线路工程教育部重点实验室,成都610031 [2]中铁二院工程集团有限责任公司,成都610031

出　　处：《铁道建筑》2022年第2期65-68,共4页Railway Engineering

基　　金：国家杰出青年科学基金(51425804);中铁二院工程集团有限责任公司科研项目(科2018-58-2)。

摘　　要：为明确米轨混凝土轨枕和钢枕道床阻力,建立了实尺米轨铁路有砟轨道试验平台,采用原位测试法测试单根轨枕的道床阻力,并拟合得出道床纵向、横向阻力-位移关系函数。结果表明:位移为2 mm时,米轨混凝土轨枕和钢枕道床的纵向阻力设计值分别为9.67、8.31 kN,道床横向阻力设计值分别为5.27、4.98 kN,米轨混凝土轨枕、钢枕的等效道床横向分布阻力分别为77.4、74.1 N/cm;米轨钢枕的重量仅为混凝土轨枕的1/4,二者道床阻力却相差不大。钢枕安装、养护方便且承载能力强,在满足阻力要求的前提下,建议优先选择钢枕。In order to clarify the resistance of meter gauge concrete sleeper and steel sleeper ballast bed,a full-scale meter gauge railway ballast track test platform was established.The in-situ test method was used to test the ballast bed resistance of single sleeper,and the longitudinal and transverse resistance-displacement relationship functions of ballast bed were fitted.The results show that when the displacement is 2 mm,the design values of longitudinal resistance of ballast bed of meter gauge concrete sleeper and steel sleeper are 9.67 k N and 8.31 k N respectively,the design values of transverse resistance of ballast bed are 5.27 k N and 4.98 k N respectively,and the transverse distribution resistance of equivalent ballast bed of meter gauge concrete sleeper and steel sleeper is 77.4 N/cm and 74.1 N/cm respectively.The weight of meter gauge steel sleeper is only 1/4 of concrete sleeper weight,but there is little difference between the two ballast bed resistance.Steel sleepers are easy to install and maintain and have strong bearing capacity.On the premise of meeting the resistance requirements,it is recommended to give priority to steel sleepers.

关 键 词：米轨铁路 道床阻力 试验研究 混凝土轨枕 钢枕 

分 类 号：U211.2[交通运输工程—道路与铁道工程]