Abstract
In the Tohoku-Pacific Ocean Earthquake, many bridges were washed away by the tsunami, the wave height of which exceeded the conventional assumption. In the future, countermeasure for tsunami disaster will be needed, and the evaluation of tsunami wave force acting on bridges will be very important. In this study, hydraulic model experiments and numerical analyses using VOF method were carried out for a bridge superstructure model to clarify the influence of tsunami wave shapes to tsunami wave force acting on it. As a result, it was confirmed that maximum wave force can be expressed as a function of the wave front slope of tsunami incident wave.
