The thickness of the transition section of the tower skirt is inconsistent with that of the skirt cylinder
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Recently, while designing a tower, I encountered a problem: the transition section of the tower’s skirt is made of 13MnNiMoR steel with a minimum thickness of 30 mm, whereas the skirt cylinder is made of Q345R steel with a thickness of 16 mm; thus, the thicknesses are not consistent. However, in SW6 the thicknesses cannot be calculated separately; if 16mm is used for all of them, the connection section will not pass the verification. How should this situation be handled during calculation?
But with the same thickness and such a high skirt height, the cost is not acceptable
Considering cost-effectiveness involves carrying out optimized design on the premise of meeting strength calculations and regulatory standards. If you can’t even meet the requirements for strength calculations, there’s no talk of costs at all.
You can calculate it in this way: use 30 mm for the thickness of the skirt, enter 14+C mm at the corrosion margin location of the skirt cylinder, and enter C at the corrosion margin location of the transition section; then try to perform the calculation. Parentheses: I haven’t done this myself; it’s just for discussion purposes
Then what is the basis for you entering it this way?
Can’t it? 13MnNiMoR is considered a high-strength steel; this material is generally not used much in towers Is this a methanol synthesis tower? Moreover, if it is a transition section, there is no need to use high-strength steel; it is sufficient to choose a material that has good weldability with the bottom head.
Thank you; it’s mainly because the client requires the transition section to be consistent with the main structure