Abstract:With the development of social economy, more and more cities begin to build large viaducts. However, due to the limited location of land in cities, many viaducts are faced with the phenomenon of being close to or even in conflict with the surrounding structures in the layout of bridge span and the selection of substructure. Therefore, how to analyze the impact of bridge substructure on existing structures is becoming more and more prominent in the actual urban bridge construction. In this paper, using the finite element software GTS, combined with practical engineering examples, a three-dimensional soil element is established, and the nonlinearity of soil is considered to analyze the influence of the bridge pile foundation construction team near the high-speed railway tunnel.