HYDRAULIC STUDY ON COUNTERMEASURE AGAINST SLIDING BY TSUNAMI OF OIL STORAGE TANK

Abstract

 In the 2011 off the Pacific coast of Tohoku earthquake tsunami, many oil storage tanks suffered great damage in the oil complex located in the coastal area. Of these, "small-scale tanks" less than 1,000 kL are reported to be about 90 %, and it is extremely important to take safety countermeasures at the time of the tsunami targeting these.

 Therefore, the authors have proposed countermeasures to prevent sliding and drifting with carbon fiber sheets (CFRP) that are excellent in durability (corrosion resistance), workability, and tensile strength, as a measure against tsunami to small-scale tank bodies. One is to restrain the tank base and the RC foundation by CFRP, and the other is to install an eye plate in the middle of the tank side plate via the CFRP and extend the wire to the ground anchor etc. In this study, hydraulic model experiments and CFD analysis for tsunami exerting force were performed on the proposed countermeasures.