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本文采用数值模拟为手段分析了典型的隧道开挖方位对地面房屋结构的应力、位移和破坏的影响规律。研究表明当隧道从房屋正下方穿过时对房屋变形影响最大,最易发生破坏。其中,高应力区分布规律为:从正下方穿越时呈“八”加“一”字形;从左下穿过时呈“Δ”字形;从右下穿过时呈“U”字形。另外,房屋水平变形区与破坏区关系密切,隧道位置造成的房屋最大水平变形量由大到小排列是:正下方>左下方>右下方。此外,模拟结果显示地层注浆和加强隧道支护能显著减小隧道建设对房屋结构稳定性的影响。
In this paper, numerical simulation is used to analyze the influence of typical tunnel excavation orientation on the stress, displacement and failure of the ground building structure. Studies have shown that when the tunnel passes directly under the house, it will affect the deformation of the houses the most, and the damage will occur most easily. Among them, the law of the distribution of high-stress zone is: “eight ” plus “one ” glyph from just below; “delta ” glyph from the lower left through; "Font. In addition, the horizontal deformation of the house is closely related to the damaged area. The maximum horizontal deformation of the house caused by the tunnel location is arranged in descending order: directly below> lower left> lower right. In addition, the simulation results show that formation grouting and strengthening of tunnel support can significantly reduce the impact of tunnel construction on the structural stability of houses.