成渝高速铁路路基上拱病害整治  

Remediation of Overarching Disease of Chengdu-Chongqing High-speed Railway Subgrade

作　　者：黄彩明 杨小锋 Huang Caiming;Yang Xiaofeng(China Railway Chengdu Bureau Group Co.,Ltd.,Sichuan,Chengdu 610000,China)

机构地区：[1]中国铁路成都局集团有限公司,四川成都610000

出　　处：《铁道技术标准（中英文）》2024年第1期1-10,共10页Railway Technical Standard(Chinese & English)

摘　　要：西南山区地形起伏较大,多条既有高速铁路线路在隧道段和深路堑段出现不同程度的软岩基底上拱现象,导致轨道不平顺,严重威胁高速铁路运营安全。利用成渝高速铁路提质改造的有利契机,对成渝高速铁路2处典型路基病害分别采用了“暗挖基床”和“桩板结构重构无砟轨道”进行整治,整治效果良好;成渝高速铁路路基上拱病害整治的成功案例积累了宝贵的经验,成果可为后续病害整治提供技术指导。The China southwest region features mountainous terrain and significant undulations.Several existing high-speed rail lines encounter varying degrees of arching on soft rock foundations in tunnel and deep cutting sections,resulting in uneven tracks and posing a severe safety risk to high-speed rail operations.Exploiting the opportunity of Chengdu-Chongqing high-speed railway's renovation for quality improment,we implemented"subgrade excavation"and"pile-slab structure reconstruction for ballastless tracks"to address two typical subgrade defects on the Chengdu-Chongqing high-speed railway,yielding positive treatment outcomes.The successful resolution of arching defects on the Chengdu-Chongqing high-speed railway's subgrade has gained invaluable expertise,offering technical guidance for subsequent defect rectifications.

关 键 词：高速铁路 无砟轨道 病害整治 基底上拱 基床暗挖 桩板结构 

分 类 号：U216[交通运输工程—道路与铁道工程]