浅埋暗挖隧道施工对地表建筑的影响分析

在复杂工程地质条件下，浅埋暗挖隧道施工引起的沉降可能对地表建筑产生严重影响。由施工引起的结构破坏或倾覆是绝对不允许的，但施工引起的建筑沉降变形对建筑正常使用极限状态的影响将是值得广泛关注和不容忽视的。在简要分析隧道施工对上部建筑地基基础的沉降影响基础上，利用有限元对隧道施工产生的地表沉降变形以及不均匀沉降引起建筑结构内力变化等相关设计参数的改变对结构的影响进行了分析，为隧道施工沉降控制指标提供了依据，对既有建筑物下的隧道工程施工具有一定的借鉴意义。

Analysis on Influence of Shallow Embedded Tunnel Construction on Ground Surface Buildings

Under complex engineering geological conditions,the settlement caused by shallow embedded tunnel construction may influence the ground surface buildings seriously.The structural damage or overturn is never allowed,however,the influence of the settlement and deformation of the buildings caused by the construction on the ultimate status of the buildings under normal service is worthy of extensive concern and can not be ignored.Based on the simple analysis on the influence of the tunnel construction on the settlement of above building foundation,how the change of the design parameters,such as the ground settlement and deformation resulted from the tunnel construction,the variable internal force of the structure caused by uneven settlement,affect the structure is analyzed by FEM,which offers the basis of settlement control indication for tunnel construction and could be referred by tunnel construction under existing buildings to certain extent.