Strength Evaluation for Large-scale Crude Oil Tank after Fire Process

Based on the finite element analysis of large-scale crude oil storage tank at water pressure test,integrated deformation and stress distribution for the wall and bottom plate of the tank were obtained,the adjacent region between first wall and second wall of the tank and the fillet weld between wall and bottom plate of large-scale crude oil storage tank was the key position.The fire process was simulated by the heat treatment for the key position,and the relationship between mechanical property and heating temperature of large tank after fire was obtained.The strength evaluation for large-scale crude oil storage tank after fire was implemented and the result showed that the strength for large crude oil tank was satisfied with requirement.