摘要
为完成既有川黔(重庆—贵阳)铁路转关口站和綦江站两座曲线车站站线的无缝化改造,采用原位测试的方法测试了其道床纵向、横向阻力,并据此进行无缝化改造可行性分析,进而提出曲线车站站线无缝化铺设和养护维修建议。结果表明:测试区段69型轨枕的道床纵向、横向分布阻力分别为22.69、12.15 N/mm,Ⅱ型轨枕的道床纵向、横向分布阻力分别为32.46、13.90 N/mm,因受道床状态差异的影响,道床阻力的离散性较大;测试区段的轨道结构强度和稳定性均符合规范要求,可进行无缝化改造;建议在进行无缝化改造时调整轨枕间距,将69型轨枕更换为强度更高的Ⅱ型轨枕,并加强道床的日常维护。
In order to complete the seamless reform of two curve station lines of Zhuanguankou station and Qijiang station of the existing Chongqing-Guiyang railway,the longitudinal and transverse resistance of ballast bed was tested by in-situ test method,based on this the feasibility analysis of seamless reform was carried out,and then the suggestions on seamless laying,maintenance and repair of curved station were put forward. The results show that the longitudinal and transverse resistance of ballast bed of type 69 sleeper in the test section are 22.69 and 12.15 N/mm respectively,and the longitudinal and transverse resistance of ballast bed of type Ⅱ sleeper are 32.46 and 13.90 N/mm respectively.Due to the influence of different ballast bed conditions,the dispersion of ballast bed resistance is large. The strength and stability of track structure in the test section meet the specification requirements,and seamless reform can be carried out. It is suggested that the sleeper spacing should be adjusted during seamless reform,type 69 sleeper should be replaced with type Ⅱ sleeper with higher strength,and the daily maintenance of ballast bed should be strengthened.
作者
董昆灵
许钊荣
李莹
杨荣山
郭利康
李江波
DONG Kunling;XU Zhaorong;LI Ying;YANG Rongshan;GUO Likang;LI Jiangbo(Key Laboratory of High-Speed Railway Engineering,Southwest Jiaotong University,Chengdu 610031,China;Chongqing Track Maintenance Department,China Railway Chengdu Group Co.Ltd.,Chongqing 400053,China)
出处
《铁道建筑》
北大核心
2022年第1期43-46,共4页
Railway Engineering
基金
国家自然科学基金(51978584,51778543)。
