Temporary Structure Simulation Analysis of Bridge Construction in Large Urban Traffic Construction

With the establishment of the Bohai Economic Circle and the proposal of "Beijing, Tianjin, and Hebei coordinated development plan", urban construction scale of the city of northern China in the future will step on a new level. Transportation is the artery of urban development, and transportation and other infrastructure construction will provide a powerful guarantee for the rapid development of the city. Under the premise of the existing urban traffic tends to be saturated, large-scale construction of cross-line viaduct and overpass is the inevitable direction of the development of urban traffic to three-dimensional and intelligent. In the city cross-line bridge construction, adopt jacking construction method, which can effectively and safely complete the upper cross-line bridge implementation with high quality without implementing separation of the lower transportation, and it is the construction method most suitable for city bridge construction. This paper, takes the Stone Ring Road across the 307 State Road concrete filled steel tube arch bridge jacking construction as the research background, carries out simulation analysis of the jacking force and deformation of the temporary pier in bridge construction in the jacking process, obtains the most unfavorable conditions and the corresponding largest displacement and the area of the maximum stress, and verifies the reliability of the analysis through comparison with the scene monitoring data, providing reference for the design and construction of temporary pier in the same kind of bridge jacking construction.