INFLUENCE OF THE DIFFERENCES IN THE METHODS OF THE STEADY AND UNSTEADY EXPERIMENTS ON THE INUNDATION FLOW AND LOAD ON RC BUILDING OF TSUNAMI AFTER OVERFLOWING A CHEST WALL

Abstract

 It is demonstrated that the inundation flows and loads on RC building of tsunamis after overflowing a chest wall, obtaind from the steady and unsteady experiments, could be significantly different each other. A relationship among the incident inundation depth of tsunami after overflowing a chest wall, overflow depth in the upstream region of the chest wall and overflow depth at the downstream end of the chest wall crown is examined using the distance from the downstream end of the chest wall to the falling position of nappe as a parameter, and it is enabled to evaluate the incident inundation depth from these overflow depths. Moreover, it is confirmed that the horizontal force on RC building caused by the tsunami inundation flow after overflowing the chest wall is estimated on a safety side by adopting the total hydrostatic pressure evaluated by using the incident inundation depth, incident inundation flow velocity and the coefficient of the inundation depth at the front of the building.