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重庆市同茂隧道地处老城区,开挖跨度大、埋深浅、上覆建筑物密集、类型多且年代已久,为隧道设计和施工带来了一定的难度。结合同茂隧道工程实际,以框架结构建筑物为研究对象,建立三维有限元模型,通过隧道施工过程对建筑物影响的有限元分析,主要对桩基变形及框架结构的弯矩、轴力和变形进行了研究,揭示桩基变形及框架结构的弯矩、轴力和变形随施工过程的变化规律。本研究可为类似工程隧道施工对上覆框架结构建筑物的影响研究提供借鉴和指导。
Chongqing Tongmao Tunnel is located in the old city. The excavation span is large, the depth is shallow, the overlying buildings are dense, the type is long and the age is long, which brings some difficulties for tunnel design and construction. Combined with the actual engineering of tunnel in Tamao, taking the frame structure building as the research object, the three-dimensional finite element model is established. Through the finite element analysis of the influence of the tunnel construction process on the building, the paper mainly analyzes the pile foundation deformation and the bending moment, Deformation has been studied to reveal the deformation of the pile foundation and the bending moment, axial force and deformation of the frame structure with the variation of the construction process. This study can provide reference and guidance for the research on the impact of similar tunnel construction on overlying frame structure buildings.