【HaiChuan Modular Installation Discussion】02: Can the final tightening of the bolts used in the ground-mounted steel structure be completed before the structure is lifted into place?
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For the installation of steel structures, the method involves constructing a frame on the ground first and then lifting it into place. The bolts used are torsion-shear type bolts. There is debate regarding when these bolts should be tightened: 1) They can be tightened before lifting, as the structure becomes a rigid unit at that point, and tightening them makes the lifting process more stable; 2) They should be tightened finally after the structure is in place, since adjustments may still be needed after it has been placed there. Which approach is correct?
They are all from Zhongning; the pipe sections can be adjusted as appropriate.
This involves the overall prefabrication of the pipe gallery, with modular installation – not bad
Do you know which project this is? ?
I don’t know. It should be the lifting of the reactor frame for the polyethylene plant in some MTO project.