How is the round-top and square-bottom structure at the lower part of the chimney of a atmospheric and vacuum distillation furnace calculated?
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Recently, it was noticed that the chimney of the company’s atmospheric and vacuum distillation furnace is shaking severely. All other components have already been analyzed; now I want to determine whether the structure connecting the furnace to the chimney is reliable. I’m not sure how to carry out this analysis. I hope someone with experience can give me some guidance – how should I model this structure or what standards should be followed? I don’t have any structural analysis software available, so I can only do the calculations manually! Thank you for your advice!
The idea of a round sky and a square earth is annoying; the forces involved are complex, and there are no simple and easy calculation methods for it. It would be more troublesome to make large holes on the top. I wonder how those major design institutes calculate it.
We can’t do it manually; we use StaadPro to create the models, and for structures with a circular top and rectangular base we calculate them using slab elements. It is calculated simultaneously with the furnace structure calculations; it hasn’t been calculated separately yet, though it can be done so, although the boundary conditions and load conditions are difficult to determine.