地铁隧道施工对邻近建筑物影响的研究

以某框架结构办公楼为研究对象，将建筑物和开洞地基看作一个有机的整体，按照结构-土体-隧道共同作用进行分析。利用有限元软件ANSYS10.0建立三维非线性有限元模型，研究计算了盾构法地铁隧道穿越建筑物时对建筑物自身沉降和内力的影响。分析结果表明，建筑物基础的沉降主要发生在地铁隧道穿越建筑物的区间段内；建筑物的横向倾斜随着盾构的掘进逐渐增大，而其纵向倾斜量最大值则出现在开挖面在建筑物中线附近时；在盾构穿越建筑物的过程中柱子的等效应 力增幅可达20.1 %；相对于弯矩而言，建筑物构件的扭矩变化更为显著；当开挖面越过建筑物20 m时其变形和内力均趋于稳定。

Analysis of influence of metro tunnel construction on adjacent buildings

Taking a frame structure office building for example, a 3D nonlinear constitutive model regarding the building and its foundation with cavern as a whole and taking into account the tunnel-soil-structure interaction is put forward by means of general FEM program ANSYS10.0. Its differential settlement and variation of internal force due to the passage of a shield tunnel is investigated. The result indicates that major settlement of the foundation of the building occurs in the zone where the shield tunnel pass...