For a storage tank with specifications of Φ13m×10.8m and a flat roof, how should supports be added inside, and how is this calculated?
Thread Content
I would like to ask the experts: The storage tank has a diameter of 13 meters and a height of 10.8 meters, with a flat roof design. How should the roof slab be supported inside the tank? How should its strength, stiffness, and stability be calculated? I urge those who are knowledgeable to provide a quick answer!
For tanks of such a large diameter, it is best to use a vaulted roof, as its weight is not much greater than that of a flat lid. Why must it be a flat lid?
This is mainly to take into account modular and serialized processing in the factory, with prefabrication in the workshop followed by direct assembly on-site. . . The flat roof assembly is relatively convenient.
It’s quite unreasonable to use a flat roof in this case; a column at the center might be an option, but otherwise it’s really not good. To give a simple example: with a flat roof, people will definitely have to leave. Even if the surface loads are applied to the reinforcement plates beneath, what size of steel member would be needed for a 13-meter-long beam? Even without live load, what size of steel section is required for a 13m-span beam supported at both ends? Actually, the algorithm is quite simple: the beams at the top can be calculated using the methods used for steel structures, and secondary beams can be added to divide the areas between the beams, thereby enhancing the stability of each area. However, the calculations suggest that the slab isn’t very thick, but the beam is quite large. If there’s still internal pressure, it’ll be even more exciting! :lol
Storage tanks are already modular in design; regardless of their specifications, their structure remains essentially the same. Don’t try to be innovative; use arches, conduct assembly inspections in the workshop, and then send it to the site.
In this case, there is usually large mixing equipment at the top; as mentioned above, it is best to use an arched roof, and if that’s not possible, a conical roof made of interlocking frames can be considered. If that doesn’t work, is it possible to stir from the side!