ABSTRACT
The problems of the cross-sea bridge influence on the dynamic environment of the sea area water is mainly researched via physical modelling experiment, numerical simulation calculation and other methods. In the numerical simulation of the two-dimensional tide, the tidal movement is controlled through the continuity equation and momentum equation, which simulates the tidal movement via calculating approximate solution with the numerical dispersing method to the governing equation. The horizontal size of the estuary and coast aequilate shallow waters is far more than the vertical depth, which is suitable for the twodimensional model for simulation, such kind of model has approached mature, and been widely applied in the strait tide and calculation, and the calculation of the oshore engineering tide field[1]. The former studies on the bridge construction influence on the water dynamic environment are mainly researched via the physical modelling experiment, numerical simulation calculation and other methods, and it has obtained abundant achievements. Tang Shifang and Li Pei[2] have obtained the resistance coecient formula of the single pile and pipe groups through testing and stated how to consider the influences of the pipe and pipe group in mathematical model.
