Numerical Simulation on Wave Forces Acting on Superstructure of Twin-Decks Bridge

Abstract

Based on practice engineering and model test, and considering different bridge elevation, elevation of sea bed, and the different wave factor, the author uses the 2D numerical wave tank based on the software ANSYS FLUENT which is established by ourselves to carry on the numerical simulation to various models, and compares with the corresponding experimental values. The author verified that all the forces are descending with the increase of bridge elevation. The most dangerous bridge elevation under wave action exists in bridge design, so it should be avoided. The optimum elevation of the bridge deck is recommended +5.5 m, and some advices on practice design engineering are presented.

Optimum Design of Bridge Cross Section with Low Clearance Considering Wave Load Effects Based on Numerical Wave-Tank

“…Through the 2D numerical wave-tank established by ourselves (Zhang et al, 2011;2012), the authors make comparative analysis of the numerical simulation calculation result of wave force of the twin-deck beam crossing sea bridge. Wave forces on bridge girder under different circumstances, including different bridge deck elevation, different seabed elevation, and considering the influence of revetment, were analyzed.…”