Abstract
Tsunami does not always act at a right angle to each structure because tsunami flows complicatedly under the influences of topography and land structures. It is, therefore, essential to evaluate tsunami wave pressure acting on a land structure in consideration of the influence of incident wave angle. In this study, hydraulic model tests were carried out under the condition that tsunamis act at right as well as oblique angles to a land structure, and the effect of incident wave angle on tsunami wave pressure was investigated based on laboratory experiments. For oblique incident tsunami, maximum inundation depth at the front of the structure and maximum wave pressure were found to decrease in comparison with right incidence wave. In addition, the experimental results revealed that maximum wave pressure due to oblique incident tsunami can be estimated by the product of wave pressure for right angle and cosine of incident wave angle.
