基于青岛某地铁区间施工过程中穿越某大厦的实际问题,采用Midas-GTS建立三维有限元模型进行模拟,研究隧道施工引起建筑物位移和内力变化问题。结果表明,隧道施工采用超前小导管注浆加固,建筑物变形得到控制,结构内力明显下降,可有效保护地表建筑物安全。 Based on the practical problems of crossing a building in a metro area in Qingdao, a three-dimensional finite element model was established by using Midas-GTS to simulate the displacement and internal force changes caused by tunnel construction. The results show that the construction of the tunnel is enhanced by the grouting of the leading small duct, the deformation of the building is controlled and the internal force of the structure is obviously decreased, which can effectively protect the safety of the surface buildings.