摘要
地铁隧道工程开挖过程中的地层运动对地下管线影响较大。基于温克尔弹性地基梁经典理论,着重分析了隧道工程开挖影响下的地下管线受力情况,推导出了地下管线的沉降、弯矩和剪力的表达式。结合西安地铁3号线延兴门站—咸宁路站区间具体工程,分析了不同因素对管线变形影响的规律。研究表明:地下管线的不均匀沉降及内力随管线与隧道倾角增大而增大,管线刚度变化对管线沉降影响极小。
Ground movement has a significant effect on underground pipeline during subway excavation. Based on the classic elastic theory of Winkler＇s elastic beam, the stress of the underground pipeline in metro excavation is mainly analyzed, equations for the displacement,the bending moment and the shearing force of underground pipelines are established. Combined with the tunnel specific engineering of Yanxingmen-Xianningiu stations on Xi＇an metro Line 3, the influential law of different factors on the pipeline is studied. The research shows that the uneven settlement of underground pipeline and the internal force increases synchronously with the inclination of pipeline and tunnel, but changes of pipeline stiffness has less impact on the pipeline settlement.
出处
《城市轨道交通研究》
北大核心
2015年第5期14-18,23,共6页
Urban Mass Transit
基金
陕西省教育厅科研计划项目(2013JK0961)
关键词
地铁隧道
地下管线
弹性地基梁
地层沉降
subway tunnel
underground pipeline
elastic foundation beam
ground settlement
