地铁车站大断面开挖周边环境风险数值分析  

Numerical analysis of surrounding environment risk for large section excavation of metro station

作　　者：马玉杰 张霞 Ma Yujie;Zhang Xia

机构地区：[1]黄河勘测规划设计有限公司,河南郑州450003

出　　处：《现代城市轨道交通》2017年第10期30-34,共5页Modern Urban Transit

摘　　要：以北京地铁某地下车站工程为背景,采用FLAC 3D有限差分软件建立车站主体结构三维模型,对车站运用PBA洞桩法施工进行数值模拟,对各个施工阶段下导洞拱顶、地表、临近建筑物以及管线的沉降与变形进行数值模拟计算,计算结果表明各项指标均满足相关要求。Taking the underground station project ofBeijing metro as an example,using FLAC3D fi nitedifference software to establish a three-dimensionalmodel of the station main structure,a numericalsimulation is carried out on the station using PBAcavern-pile method construction,to simulatesettlement and deformation of pilot tunnel vault,surface and vicinity buildings and pipelines at allconstruction stages.The calculation results show thatthe parameters meet the relevant requirements.

关 键 词：地铁车站 PBA法 大断面开挖 环境影响 数值分析 

分 类 号：U231.3[交通运输工程—道路与铁道工程]