基坑施工对邻近曲线隧道的影响研究  

Research on the Influence of Foundation Pit Construction on Adjacent Curved Tunnel

作　　者：许胜寒 XU Shenghan(Wuxi Metro Construction Design and Consulting Co.,Ltd.,Wuxi 214200,China)

机构地区：[1]无锡市轨道建设设计咨询有限公司,江苏无锡214200

出　　处：《广东土木与建筑》2024年第3期42-44,60,共4页Guangdong Architecture Civil Engineering

摘　　要：以某邻近曲线地铁隧道的基坑工程为例,建立基于Midas GTS的三维有限元模型,结合现场监测,研究分析了基坑施工过程对邻近曲线地铁隧道的影响。结果表明:有限元模型计算得出的隧道最大水平和竖向位移分别为4.61 mm和6.39 mm,现场实测隧道最大水平和竖向位移分别为4.02 mm和4.75 mm,可满足轨道对于变形的要求。数值计算模型能够真实地反映工程实际,计算得出的隧道变形趋势与实测结果相近,可为今后类似的工程提供参考。Taking a foundation pit project of a nearby curved subway tunnel as an example,a three-dimensional finite element model based on Midas GTS was established.Combined with on-site monitoring,the impact of the foundation pit construction process on the adjacent curved subway tunnel was studied and analyzed.The results showed that the maximum horizontal and vertical displacements of the tunnel calculated by the finite element model are 4.61 mm and 6.39 mm,respectively.The on-site measured maximum horizontal and vertical displacements of the tunnel are 4.02 mm and 4.75 mm,respectively.The displacements can meet the deformation requirements of the track.The numerical calculation model can truly reflect the actual engineering situation,and the calculated deformation trend of the tunnel was similar to the measured results,which can provide reference for similar projects in the future.

关 键 词：曲线隧道 基坑施工 隧道变形 数值分析 现场监测 

分 类 号：TU941[建筑科学—建筑技术科学]