Effects on the Hydrodynamics Caused by Artificial Islands of the Hong Kong-Zhuhai-Macao Bridge

Rong Yao Ji; Qun Xu; Liang Wen Jia; Si Ping Mo

doi:10.4028/www.scientific.net/AMM.204-208.2085

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 204-208Effects on the Hydrodynamics Caused by Artificial...

Effects on the Hydrodynamics Caused by Artificial Islands of the Hong Kong-Zhuhai-Macao Bridge

Abstract:

Hong Kong-Zhuhai-Macao Bridge will cross Lingding navigation channel in the form of immersed tunnels, with two large artificial islands to provide change-over facilities between bridge and tunnel. In order to predict the effects on the hydrodynamic environment caused by the artificial islands, the physical model for the Bridge is built to analyze the changes of the tidal level and tidal current. The experimental results show that the drag force on flow is increased and the flow section area is decreased by the two large artificial islands built in the sea. Near both ends of the artificial islands, the velocities of tidal currents increase. The opposite side of the artificial islands, there is the recirculation zone with many vortexes in different scales, which have the periodic change from formation to disappearance. Affected by the topography, hydrodynamic conditions, as well as by the position, shape and scale of the artificial islands, the changes of hydrodynamic environment caused by both the west artificial island and the east one is similar in the change rules and different in the forms.