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以金丽温高速公路二期工程里东隧道为工程背景 ,采用有限元法对温州端洞口段 4 0 m连拱隧道进行了施工全过程三维数值模拟 ,得出了地层及地表在施工全过程中的沉降分布规律与大小 ,并与 1/ 2 0的实物相似模型试验进行对比 ,提出了连拱隧道施工全过程地层沉降变化规律与施工中应重点关注的区域 ,对实际工程进行直接指导并为同类工程提供参考
Taking the Lidong Tunnel of Jinliwen Expressway Phase II Project as an example, a three-dimensional numerical simulation of the entire construction process of 40m multi-arch tunnels in the Dongduokou section of Wenzhou was carried out by finite element method. The results show that during the whole construction process of the strata and the ground surface The distribution law and the size of the settlement are compared with the physical similarity model test of 1/2 0, and the law of formation settlement in the whole process of multi-arch tunnel construction is put forward and the area that should be paid attention to in the construction is directly compared with the actual project, Project provides a reference