Abstract
The authors examined the most suitable tide wall shape for tsunami energy reduction. As the results, we understood that the steep slope was more effective than the traditional sea wall for the tsunami energy reduction. In this study, we examined mechanical stability of the steep slope tide wall reinforced by geotextiles for overflow tsunami. At first, we installed pressure gauges in the rigid model and measured horizontal tsunami pressures. We considered the measured forces to the external forces and designed the tide walls which changed some parameters. We carried out tsunami model experiments to examine the stability of designed tide wall model. As the experimental results, we got the some important knowledge to design a tenacious tide wall.
