2018 Volume 74 Issue 2 Pages I_373-I_378
In order to grasp behavior of water driven debris generated by tsunami inundation flow when the debris was impacted to apparatus established on land, hydraulic model experiments were carried out. We confirmed that drift velocity of debris was reduced than tsunami velocity because refrected wave was formed in front of collided object, and there were some debris that was not impacted on conditions that the debris was shorter than the length of the reflected wave. Moreover, we confirmed that considerating additional mass was also important in the collision phenomenon of a floating body when the debris was accelerated, and have the possibility of applying the past evaluation method using additional mass. It is indicated that reasonable predicted collision force can be calculated with the proposed load estimation formula by using the effective stiffness calculated from the structure of the object related in the collision and assuming the deformation at collision as elastic deformation.
PROCEEDINGS OF COASTAL ENGINEERING, JSCE
PROCEEDINGS OF THE JAPANESE CONFERENCE ON COASTAL ENGINEERING
