RESEARCH ON PRACTICAL APPLICATION OF MOVABLE TSUNAMI MITIGATION FACILITY “ANTI-TSUNAMI DOOR"

Abstract

 The Anti-Tsunami Door (ATD) 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 ATD 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 ATD using only the measured wave height was inappropriate because the net tsunami mitigation effect of the embankment body could not be properly evaluated. On the other hand, the evaluation using the passing water volume data was applied to expect the tsunami reduction effect of the embankment body. The tsunami mitigation efficiency of the ATD was 70% or more. The strength analysis of the ATD was also done in the paper.