远期延长线穿越既有线的预留路径选择与数值模拟  

Reserved path and numerical simulation analysis of long-term extension line crossing existing line

作　　者：梁健 LIANG Jian(Taiyuan Design Institute of Railway Engineering Consulting Group CO.,LTD.,Taiyuan 030013,China)

机构地区：[1]中铁工程设计咨询集团有限公司太原设计院,山西太原030013

出　　处：《四川建材》2020年第10期125-127,共3页Sichuan Building Materials

摘　　要：太原市城市轨道交通1号线远期西延线同时穿越玉门沟线铁路与西山停车场出入场线区间,结合场地条件及线路方案,西延线可从出入场线盾构隧道上方或者下方穿越。为减小远期西延线施工对届时已建成的出入场线区间隧道及既有玉门沟线铁路的影响,利用有限元软件MIDAS/GTS-NX对两方案进行数值模拟,分别论述西延线在出入场线上方、下方穿越的可行性,通过对比分析确定安全、经济、合理的远期西延线盾构穿越路径,并提出切实可行的既有线保护措施。West extension line of Taiyuan Metro Line 1 passes through the railway of Yumengou Line and access line of Xishan Mountain parking lot.Based on the site conditions and route plan,West extension line could pass through above or below the shield tunnel of the access line.The finite element software MIDAS/GTS-NX was used to carry out numerical simulations of the two schemes,in ordre to reduce the impact on the existing tunnels of access line and the Yumengou railway during the metro construction phase.This paper discusses the feasibility of west extension line passing though above or below the access area.The papaer proposes a safe,economical and reasonable path of shield crossing through comparative analysis,which the protection measures are practical and feasible.

关 键 词：盾构隧道 出入场线 下穿铁路 预留条件 数值模拟 

分 类 号：U212[交通运输工程—道路与铁道工程]