The impact of a water flow and train on a double submerged floating tunnel

The article considers the impact of a water flow on a double underwater floating tunnel. Currents and waves on the water surface are considered as an impact. The results of this action are the force of resistance to the flow and the lifting force. Minimal impact on the structure of this tunnel was found both during surface waves and during the current. There is a significant increase in the bending moment in the tunnel pipe near the portal zones. Optimization of the bending moment with the help of cable stiffness variation allowed to reduce the maximum bending moment by 6 times.