考虑多因素的深埋管线施工对临近地铁影响分析——以龙泉驿区玉竹路为例

Impact Analysis of Deep Buried Pipeline Construction on Adjacent Subway by Considering Risk Assessment:Taking Yuzhu Road in Longquanyi District as an Example

随着城市交通网络的密集化发展,新建管线工程与已建地铁线路之间的相互影响愈发凸显。以龙泉驿区玉竹路道路管线铺设工程为例,通过风险评估和数值模拟,评估风险等级,模拟开挖卸载后地铁隧道结构的响应,揭示了管线开挖卸荷后地铁隧道位移、应力分布及稳定性的影响规律。结果表明,管线开挖作业对邻近地铁设施产生显著但可控的影响,表现为局部区域地面沉降、隧道轴向与横向位移增大以及结构内力重分布。基于研究结果,提出针对性的工程措施和建议,旨在降低管线开挖施工对临近地铁线路安全稳定性的影响。

With the intensive development of urban transportation network,the mutual influence between new pipeline projects and existing subway lines has become more and more prominent.Taking the pipeline laying project of Yuzhu Road in Longquanyi District as an example,through risk assessment and numerical simulation,the response of the subway tunnel structure simulation is simulated after excavation and unloading,and then the influence rules of the displacement,stress distribution and stability of the subway tunnel after pipeline excavation and unloading are revealed.The results show that the pipeline excavation has a significant but controllable impact on the adjacent subway facilities,including the local ground settlement,increased tunnel axial and transverse displacement,and the re-distribution of internal forces in the structure.Based on the research results,targeted engineering measures and suggestions are put forward to reduce the impact of pipeline excavation on the safety and stability of adjacent subway lines.