ABSTRACT
The aim of this study is to investigate total hydrodynamic pressure distribution on the Submerged Floating Tunnels (SFT). In this study, a multi-floater-mooring coupled time-domain numerical model has been established for SFT. A Discrete-Module-Beam (DMB) method is adopted to consider the hydro-elasticity of SFT, which describes a numerical model as a combination among multiple floating submerged bodies like the beam-element-model. Using this coupled time-domain numerical model, we can observe hydrodynamic wave loads, bending stress, and displacement of SFT, and mooring tension under operating and survival conditions. In addition, the time history of total hydrodynamic pressure distribution on the whole surface of SFT can be obtained, which is the summation of diffracted wave pressure and radiated wave pressure considering actual displacements of multiple bodies. From this, we found the point where maximum total hydrodynamic pressure occurs. Pressure distribution can be utilized for a detailed structural analysis and designing structural compartments through a high-fidelity finite element model such as a solid model with quasi-static simulation.
