Regarding GB50341 tank issues
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1. For storage tanks designed according to this standard, must the tank top and tank walls have a weakly connected structure? 2. Appendix A Microinternal pressure storage tanks: a. What does the maximum design pressure Pi mean, and what is the purpose of calculating Pi? b. The difference between Pi and Pf seems to refer to a concept that is determined by the pressure-resistant ring, right? (c. The pressure Pmax in the standard for the condition of weak connection between the tank top and the roof is the pressure at which the compression ring reaches yield.)
The radius of curvature of self-supporting vaults generally does not exceed 1.2 times the diameter of the tank wall; in such cases, the slope of the vault at the junction with the angle steel used to connect it to the tank wall is much greater than 1/6. Therefore, conventional vaulted tanks do not meet the requirements of weakly connected structures.
This proof is very good, but aren’t the oil tanks connected in a weak manner? The standards seem contradictory; let’s continue