摘要
为解决现浇仰拱衬砌阻断物料运输通道难以与TBM掘进同步实施的工程难题,通过分析与比选提出带承台平面仰拱设计方案,研制由爬坡轨、U型主梁、分段支撑、步进移位、仰拱模板等系统构成的TBM法隧道仰拱同步现浇衬砌台车,开发由轨道轨枕拆除、隧底清渣、钢筋绑扎、仰拱浇筑、仰拱养护、轨道安装等工序组成的仰拱同步现浇施工工艺。在滇中引水香炉山隧洞得到成功应用。仰拱现浇衬砌不影响TBM正常施工,单仓24 m现浇仰拱作业循环时间44 h,施工进度可达200 m/月,实现了仰拱现浇与TBM掘进的同步高效作业。
To realize synchronous implementation of tunnel boring machine(TBM)excavation and construction material transportation during invert arch cast-in-place construction,a design scheme of plane invert arch with bearing platform is proposed through analysis and comparison.Additionally,a synchronous cast-in-place lining trolley for TBM tunnel invert arch integrating climbing rail,U-shaped main beam,segmented support,stepping shift,and invert arch formwork is developed.Finally,a series of synchronous cast-in-place techniques for invert arch are developed,which includes track demolition,tunnel bottom muck cleaning,steel bar binding,invert arch casting and maintenance,and track installation.The scheme,trolley,and techniques mentioned have been successfully applied in Xianglushan tunnel of Central Yunnan water diversion project.The cast-in-place lining of invert arch did not affect the normal construction of TBM.The operation cycle time of 24 m cast-in-place invert arch in a single warehouse was 44 h,and the construction progress reached 200 m a month,realizing synchronous and efficient operation of invert arch cast-in-place construction and TBM tunneling,which is worth popularizing.
作者
徐鹏祖
杨延栋
徐海峰
刘万林
王天一
XU Pengzu;YANG Yandong;XU Haifeng;LIU Wanlin;WANG Tianyi(China Railway Tunnel Stock Co.,Ltd.,Zhengzhou 450001,Henan,China;China Railway Tunnel Group Co.,Ltd.,Guangzhou 511458,Guangdong,China;State Key Laboratory of Shield Machine and Boring Technology,Zhengzhou 450001,Henan,China;Railway Development Investment Group Co.,Ltd.,Kunming 650118,Yunnan,China)
出处
《隧道建设（中英文）》
CSCD
北大核心
2023年第S01期480-486,共7页
Tunnel Construction
基金
中国中铁科研开发计划课题(2020-重大专项-04)
云南省重大科技专项计划课题(202002AF080003)。
关键词
仰拱衬砌
同步现浇
衬砌台车
超长隧道
滇中引水
invert arch lining
synchronous cast-in-place
lining trolley
super-long tunnel
Central Yunnan water diversion project
作者简介
第一作者:徐鹏祖(1986-),男,甘肃会宁人,2010年毕业于白城师范学院,土木工程专业,本科,高级工程师,现从事TBM法隧道施工与管理工作。E-mail:517038370@qq.com;通信作者:杨延栋,E-mail:yay_sky@163.com。
