The Study Of Influence And Construction Control When One Shield Tunnel Of Subway Traversing The Tianjin Railway Station

The concept of the seamless exchange between the subway station and the railway station is accepted by more and more people. With the vigorous development of China’s rail transit, the project that the tunnel of subway traversing the railway station will be gradually increased. The railway station has its own characteristic such as the numerous track ways, busy driving, the complex and diverse buildings. If the tunnel traversing the railway station, there will be many risk points. What’s more, each risk point has their own deformation requirements. It is hard to across through the railway station. This project will not only affects the driving safety, but also will affect the normal using of the buildings. Therefore, the analysis of the railway station and building’s influence degree when the shield tunnel of the subway line traversing the railway station and summarizing the influence characteristics of different buildings in the railway station, combined with the actual project and the successful experience in fact, can provide a reference for similar projects to ensure the construction of the project smooth and safe.This paper based on the project that the tunnel between Jiefang Qiao subway station and Tianjin subway station of Tianjin subway line3traversing the Tianjin railway station, using the finite-element analysis software and the monitoring data analyzed and concluded the effect of the different building cause by the shield tunneling; summarizing the successful construction experience; by changing the construction parameters and construction programs, give the recommendations of construction parameters and construction programs, it also can guide the construction of similar projects. We will lunch our research program as follows:(1) The finite element analysis software ANSYS is used to build the whole model of soil to simulate the effect of the different building on the base of Tianjin subway station that caused by the shield tunneling. Then we give the deformation control targets during the construction period. Concluding the conclusion of the effect that the different buildings caused by the shield tunneling; summarizing the successful construction experience combined with monitoring data.(2) We analyze the deformation law of Tianjin railway station in different parameters of shield and construction scheme to provide reasonable recommendations to guide the similar construction.