Abstract
The Anti-Tsunami Door is a foldable and movable tsunami mitigation facility that automatically stands up to prevent the intrusion of waves when a tsunami occurs. In this study, the conditions required for the practical application of the Anti-Tsunami Door were examined from both the hydraulic model experiment and the numerical analysis. A numerical analysis model was constructed using OpenFOAM, and the tsunami mitigation effect was evaluated. The method of evaluating the performance of the Anti-Tsunami Door using only the measured wave height was inappropriate because the net tsunami mitigation effect of the door body was not
measured properly. On the other hand, the evaluation using the passing water volume data appropriately evaluated the tsunami reduction effect of the Anti-Tsunami Door. The tsunami mitigation efficiency of the Anti-Tsunami Door was 70% of a fixed breakwater. In the strength analysis of the Anti-Tsunami Door, it was judged that the Anti-Tsunami Door can be operated safely in terms of strength in the case of wood with a large Young’s modulus. Based on the results of the study, we judged that the Anti-Tsunami Door was practical as a tsunami countermeasure disaster prevention facility, and proposed the condition for installing the Anti-
Tsunami Door on site.
