EARTHQUAKE–TSUNAMI INTERACTION DIAGRAM CONSIDERING FOUNDATION UPLIFT

抄録

 This study extended the existing earthquake–tsunami multihazard interaction diagram by considering foundation uplift as a limit state. Taking up a three-story building supported through a mat foundation as a model, 30 ground motions recorded in the coastal area of three prefectures in Tohoku, Japan during the 2011 Tohoku earthquake and the tsunami hydrodynamic force were applied by varying their magnitude to put together the diagram. The obtained earthquake–tsunami interaction diagram illustrates that after the earthquake, the remaining resistance differs depending on the different levels of foundation uplift during the earthquake.