祁连山隧道二次衬砌混凝土开裂原因及整治方案研究  

Study on Causes to and Treatment of Concrete Cracking of the Secondary Lining of Qilianshan Tunnel

作　　者：于洪钦 齐军 刘怀荣 侯志刚 李德武[2] YU Hongqin;QI Jun;LIU Huairong;HOU Zhigang;LI Dewu(Wuwei Track Maintenance Division,China Railway Lanzhou Group Co.,Ltd.,Wuwei 733000;School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730070)

机构地区：[1]中国铁路兰州局集团有限公司武威工务段,武威733000 [2]兰州交通大学土木工程学院,兰州730070

出　　处：《现代隧道技术》2021年第1期217-222,共6页Modern Tunnelling Technology

基　　金：中国铁路兰州局集团有限公司科技研究开发计划课题(2018-45)。

摘　　要：针对祁连山隧道运营期内二次衬砌开裂的病害问题,通过对现场进行调查研究,统计了二次衬砌裂缝特征及走向分布情况,分析了裂缝产生机理及原因,并根据相应规范及设计要求,对不同类型衬砌开裂情况提出了整治措施及建议。To address the disease problem of secondary lining cracking in the operation period of Qilianshan tun⁃nel,the crack features and strike distribution conditions are investigated at the field,the cracking mechanism and causes are analyzed,as well as the treatment measures and relevant suggestions are proposed for different kinds of lining cracks according to relevant specifications and design requirements.

关 键 词：隧道工程 开裂特征 局部拆换 结构补强 修补 

分 类 号：U455.91[建筑科学—桥梁与隧道工程]