Tsunami Impact on Buildings
The 2011 Tohoku earthquake tsunami caused a catastrophic disaster. To deal with such massive tsunamis, disaster mitigation using multifaceted countermeasures is essential in addition to shore protection facilities. This study focused on one of such countermeasures, which involved beachside rigid structures. To quantitatively evaluate the influence of such structures on tsunami force, a three-dimensional analysis was performed using a numerical model FS3M. A comparison with experimental data showed that FS3M can predict water surface fluctuation, inundation depth, and tsunami force. Furthermore, it was found that determining the arrangement of beachside structures is essential to reduce tsunami force on rear buildings.