盾构隧道施工对既有铁路轨道与排洪涵管影响的数值分析  

Numerical Analysis on Influence on Existing Railway Tracks and Drainage Culverts Induced by Shield Tunneling

作　　者：黄生文[1] 施成华[1] 彭立敏[1] 丁祖德[1] 谢顺意[1] 

机构地区：[1]中南大学,长沙410075

出　　处：《隧道建设》2012年第3期332-335,345,共5页Tunnel Construction

摘　　要：以福州地铁l号线的罗汉山站—福州火车站区间段盾构隧道工程为依托,采用有限元程序MIDAS,对近距离双线平行盾构掘进过程进行动态模拟,揭示盾构新隧道施工对既有铁路轨道和排洪涵管沉降产生的影响,得到了铁路轨道和涵管沉降曲线。计算结果表明,列车数量、隧道注浆程度、地层损失率等因素对铁路轨道和排洪涵管沉降有较大影响。The shield boring of twin-tube tunnels is dynamically simulated by means of finite element software MIDAS, with the boring of Luohanshan station-Fuzhou Railway station section on No. 1 line of Fuzhou Metro as an example. The influence on the existing railway tracks and drainage culverts induced by shield boring is presented. The deformation curves of the railway tracks and drainage culverts are obtained. The calculation results show that the quantities of the trains, the tunnel grouting effect and the ground loss ratio have serious influence on the settlement of the railway tracks and drainage culverts.

关 键 词：盾构隧道 铁路轨道 排洪管 数值模拟 列车荷载 地层损失 注浆 

分 类 号：U455[建筑科学—桥梁与隧道工程]