抄録
Hydraulic experiments were conducted to estimate tsunami wave pressure acting on a land structure and examine the influence of initial inundation in a land. The experimental results revealed that the runup characteristics of incident tsunami wave are largely different under a dry or wet bed condition. Initial depth in an inundated land has a significant influence on not only inundation pattern at the front of the land structure but also tsunami wave pressure acting on the structure. The vertical distribution of tsunami wave pressure at the time when the maximum wave force occurs was also influenced by the initial inundation. Tanimoto formula for estimating tsunami wave acting on a vertical breakwater was found to be applicable to evaluating tsunami wave pressure acting on a structure in an inundated land.