Abstract
Many structures near shoreline were destroyed severely by The Great East Japan Earthquake Tsunami of 2011. In this study, to discuss tsunami pressure acting on concrete bridge on the Rikuzentakata City, calculation of tsunami transformation and pressure was carried out with nonlinear shallow water equations and CADMAS-SURF/3D. In those results, the horizontal and vertical pressures of the tsunami acting on concrete bridge were showed by the calculation results. The calculation data showed that the tsunami pressure is influenced from the topographical condition of before and after the earthquake.
