Abstract:In response to the problems that there are many piers in the reconstruction project of water supply bridge spanning Caohejing Port and the construction cofferdam is required to build during the construction to affect the flood discharge of the river channel, the hydrodynamic model of water conservancy fragmented river network is established by MIKE11. At the same time, a two-dimensional tidal flow mathematical model is established for the local engineering river range by MIKE21 to calculate and analyze the impact of the project on the water level, flow rate, flow velocity and other aspects of the engineering river section, which comprehensively demonstrates the impact of the project on the flood control and river regime. The results indicate that the layout of bridge piers in the translational construction technology scheme will have a permanent impact on the river regime of Caohejing Port. It is recommended to install the new bridge piers in situ based on the existing bridge pier positions. The research results can provide theoretical basis for the construction of the bridge project spanning Caohejing Port and for the similar projects.
