邻近地铁沿线的建设工程施工不可避免地会对已建成的地铁结构设施的安全和运营产生影响，为确保地铁结构设施的稳定和运营安全，需要对建设工程的设计、施工方案进行审查，评估工程施工对地铁结构设施的影响。以某工程为例，运用流固耦合分析方法研究了在地下水作用下，考虑水和岩土体耦合作用的基坑开挖过程对地铁隧道结构的影响，并分析了桩基础施工对地铁隧道结构的作用效应。基坑开挖过程中降水会引起基坑范围内较大幅度的地表沉降，该过程与基坑开挖卸荷效应联合作用，对地铁隧道结构的变形应力产生复杂的影响；另外，邻近地铁隧道结构的桩基施工加载也会引起隧道结构的下沉变形，需要在实际工程中予以重视。

Construction activities near existing Metro works will inevitably affect the safety and operation of the Metro works. In order to ensure the safety and operation of the Metro works, it is necessary to review the design and construction plan of the works to be constructed. Fluidsolid coupling method is used to analyze the influence of the foundation pit excavation on the Metro tunnel structure, and the effect of pile foundation construction on the Metro tunnel structure is also analyzed. The result shows that the stress and deformation of the Metro structure are very complex, considering the fluidsolid coupling effect of excavation and groundwater. In addition, the pile foundation construction will cause deformation of the tunnel structure, to which more attention should be paid.