Assessment of the impacts of planning traffic bridges system across red river on Ha noi reach to the river bank erosion and river bed changes for period from 2020 to 2030

Abstract

The article presents some results of research and evaluation about the influence of planning traffic bridges system across Red River on Ha Noi reach to the river bank erosion and river bed changes for period from 2020 to 2030. On the basis of simulation results on hydraulic models, MIKE 21FM HD-ST two-dimensional morphology simulated for the Red River section from Son Tay to Hung Yen and Duong River to Thuong Cat. Bridge piers are simulated in the model using a combination of both meshing and pier simulations. The evaluation results include topographic changes in the cross-section, longitudinal section, changes in the riverbank, and deep creeks on the studied river section before and after the construction of the bridge.