高速铁路无砟轨道路涵过渡段上拱整治  

Treatment of Heave of Ballastless Track Subgrade⁃culvert Transition Section of High Speed Railway

作　　者：戚志刚 吴细水 李中国 楼梁伟 王之鲁 QI Zhigang;WU Xishui;LI Zhongguo;LOU Liangwei;WANG Zhilu(China Railway Lanzhou Group Co.Ltd.,Lanzhou 730030,China;Department of Track,Communication&Signaling and Power Supply,CHINA RAILWAY,Beijing 100844,China;Railway Engineering Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)

机构地区：[1]中国铁路兰州局集团有限公司工务部,兰州730030 [2]中国国家铁路集团有限公司工电部,北京100844 [3]中国铁道科学研究院集团有限公司铁道建筑研究所,北京100081

出　　处：《铁道建筑》2023年第3期128-132,共5页Railway Engineering

摘　　要：针对兰新客运专线K2450—K2460区段路涵过渡段路基上拱病害反复发生难以根治的情况,考虑工点施工条件,分别研究制定了上拱段桩板结构整治、暗挖落道整治两套方案。通过优化整治方案,细化施工注意事项,组织开展路基上拱整治实践,彻底整治了路涵过渡段上拱问题,恢复了无砟轨道平顺性,消除了高速铁路长期限速点。通过实践形成一套全路首创、彻底整治高速铁路无砟轨道路基上拱的技术和方法。The subgrade heave diseases in the K2450—K2460 subgrade-culvert transition section on the Lanzhou-Urumqi passenger dedicated line occurred repeatedly and are difficult to eradicate,considering site situations,two sets of schemes had been studied and formulated:treatment with pile-board structure in the heave section,and treatment with concealed excavation and track lowering.By optimizing the treatment plan,refining construction precautions,and organizing and carrying out subgrade heave treatment schemes,the problem of subgrade heave had been thoroughly rectified.The smoothness of ballastless track had been restored,and the long-term speed limit points of high speed railway had been eliminated.A set of technologies and methods eradicating subgrade heave diseases of high speed railway ballastless track had been formed for the first time.

关 键 词：高速铁路 上拱 现场试验 路基 无砟轨道 桩板结构 暗挖 落道 

分 类 号：U215.7[交通运输工程—道路与铁道工程]