FIELD SURVEY OF THE 2024 NOTO PENINSULA EARTHQUAKE BULGING AND SLOSHING DAMAGE TO STAINLESS STEEL RECTANGULAR TANK

Abstract

 This paper presents examples of destruction and damage observed during field surveys of stainless steel rectangular tanks in the 2024 Noto Peninsula earthquake disaster. The causes of the damage and destruction are two completely different types of vibration phenomena caused by the difference in the period of earthquake motion. The first is the sloshing phenomenon caused by long-period earthquake motion, and the second is the bulging phenomenon, which is mainly caused by vibration of the tank structure caused by short-period earthquake motion. Based on this fact, the paper describes the problems and design issues for improving the seismic performance of stainless steel rectangular tanks, and it is determined that there is an urgent need to improve them.