邻近既有线高速铁路隧道内监测点布置优化方案研究  

Research on Optimization Scheme for Monitoring Point Layout in High Speed Railway Tunnels Adjacent to Existing Lines

作　　者：李勇 Li Yong(China Railway 12th Bureau Group Co.Ltd.,Taiyuan,Shanxi 030032)

机构地区：[1]中铁十二局集团有限公司,山西太原030032

出　　处：《江西建材》2024年第12期105-108,共4页

摘　　要：针对新建盾构隧道侧穿既有线高速铁路隧道难以控制其结构变形的问题,文中以京雄快线盾构隧道侧穿京雄城际机场铁路隧道工程为依托,开展了既有隧道结构变形和新建盾构隧道地表沉降监测。研究结果表明,新建盾构隧道侧穿对既有隧道结构变形影响较小;既有隧道的拱顶沉降和拱腰收敛随监测时间增加出现先迅速增加、盾构隧道支护完成后逐渐平稳的趋势,且监测值均小于累计量报警值。In response to the problem of difficulty in controlling the structural deformation of newly-built shield tunnels passing through existing high-speed railway tunnels.Based on the shield tunnel project of the Jingxiong Express Line passing through the Jingxiong Intercity Airport railway tunnel,deformation monitoring of the existing tunnel structure and ground settlement monitoring of the newly built shield tunnel were carried out.The research results indicate that the lateral penetration of newly constructed shield tunnels has a relatively small impact on the deformation of existing tunnel structures;The settlement of the arch crown and the convergence of the arch waist of the existing tunnel show a rapid increase with the increase of monitoring time,and gradually stabilize after the completion of shield tunnel support,and the monitoring values are all less than the cumulative alarm value.

关 键 词：铁路隧道 盾构侧穿 隧道施工 监控量测 

分 类 号：U456[建筑科学—桥梁与隧道工程]