ABSTRACT
The dynamic behavior of the shore connection segment of submerged floating tunnel was simulated numerically to observe the effect of interface stiffness at the shore connection on the dynamic characteristics of the tunnel. The results showed that the elastic joint release the stress concentration at the shore connection by decreasing the imbalance of the displacements occurred in the bored tunnel and the floating tunnel. Also, the results showed that the interface stiffness at the shore connection acts as the elastic boundary of the submerged floating tunnel, and it affects the natural frequency of the submerged floating tunnel. It is expected that the results from this study can be utilised in the design of the submerged floating tunnel to avoid occurrence of resonance under dynamic load such as tidal load and seismic load by adjusting the interface stiffness which controls the natural frequency of the submerged floating tunnel.
