Comparison of the Strength Design and Prevention Method of Elephant Foot Buckling Among Countries' Standards of Oil Tanks

摘要

In China a large number of tanks whose volumes are greater than 100000 m~3 are necessary to be built for establishing the oil reserves system with four levels, which include national strategic oil reserve, commercial oil reserves in the three major oil companies, oil reserves in local governments and general enterprises. Oil tanks built in China were mostly welded tanks and on the ground. The difference among the methods of the strength design of the tank side plate designed by countries' standards such as API 650, JIS B 850 K BS EN 14015 and GB 50341 is discussed. And the reason why API 650 is used by China engineering company is given. Then kinds of prevention methods about the tank wall elephant foot buckling by earthquake which were designed according to different national standards are compared. It is pointed out that the calculation methods of the tank wall's allowable compressive stresses and longititude compressive stresses designed by national standards are different. At last the existing problems and the appropriate solutions are analyzed briefly.