地铁车站施工地下管线及地层变形  

SUBSURFACE PIPELINE AND GROUND DEFORMATION DURING SUBWAY STATION CONSTRUCTION

作　　者：刘虎 LIU Hu(China Railway 21st Bureau Group International Engineering Co.,Ltd.,250000,Ji'nan,China)

机构地区：[1]中铁二十一局集团轨道交通工程有限公司,济南250000

出　　处：《建筑技术》2024年第23期2933-2936,共4页Architecture Technology

基　　金：中铁二十一局集团科研计划项目(202300002)。

摘　　要：为分析地铁车站施工对地下管线的影响,通过建立地铁车站施工模型,考虑施工过程中的开挖、支护、注浆加固等工艺进行数值模拟。结果表明,地铁车站施工对地下管线造成了以沉降为主的变形,管土刚度差异较大的管线产生的应力较大,管土刚度差异较小的管线产生的应力较小。通过进一步对比有无注浆加固条件下的模拟结果,发现注浆加固可以有效减小地下管线的沉降和应力变化。In order to analyze the impact of subway station construction on underground pipelines,a numerical simulation was conducted by establishing a construction model of the subway station,considering excavation,support,grouting reinforcement,and other processes during construction.The results show that subway station construction primarily induces deformation characterized by settlement in underground pipelines.Pipelines with significant differences in stiffness between the pipe and the surrounding soil experienced higher stresses,while those with smaller differences exhibited lower stresses.Further comparison between simulations with and without grouting reinforcement revealed that grouting reinforcement effectively reduces settlement and stress variations in underground pipelines.

关 键 词：地铁车站 地下管线 注浆加固 沉降 应力 

分 类 号：U231[交通运输工程—道路与铁道工程]