The Analysis Of Influence Of Large-diameter Shield Tunnel Construction On Structure Safety Of The Adjacent Building

Buildings in the city populated area construction by shield method, must fully consider the effect of shield construction to adjacent building security. In this paper, based on the beijing-tianjin inter-city railway line extension of tianjin jiefang road of shield tunnel project, through the practical field monitoring, the way of combining theoretical analysis and numerical simulation of large diameter shield construction in soft soil area affect to do the research about the safety of adjacent buildings, mainly finished the following work:(1) By reading and learning of shield construction of books and literature, understand the shield construction of stratum and the adjacent building mechanism and the influence of the process;(2) Using numerical simulation software FLAC3 D to tunnel adjacent buildings are simulated, analyzed the shield construction impact on the safety of adjacent building, research building subsidence caused by shield construction law;(3)On the in-situ monitoring data collection and analysis, the research on the formation of shield construction and the influence of the neighboring buildings, summarizes the formation and building deformation law;(4) Combining the construction reinforcement scheme, the shield construction process are simulated. By comparing the numerical simulation results and monitoring data, the effect of the reinforcement scheme is verified.