Unloading of steel structure

Steel unload means: steel construction projects, with the overall lifting, overall improvement, slip and other programs, in the whole structure does not form a stable framework for temporary use as a tower or steel columns supporting the member or structure fixed at the completion of the installation and welding work interface, complete the overall structure of the force, the removal of the temporary support uninstall process is called steel.

The so-called unload steel, precisely, is the steel support tower unloaded. In the process of building the nest, there are 78 steel columns supporting the makeshift nest of steel "dendrite." Uninstall is this 78 78 regional pillar force generated lifted slowly and steadily, so the nest by external forces supported by the state to become completely on its own structural support. Thus, the support tower unload the entire steel itself is actually loaded.

Steel and steel truss installation, using the overall increase, the overall cumulative slip lifting or other methods, the need to support the erection of temporary or sliding frame and scaffolding. After the general steel main structure to form a space to install a stable and complete all the welding and connection work, the need for a temporary support structure to uninstall. Uninstall release the supporting forces, the stress state of the structure and ultimately achieve the design requirements.

Especially large steel unload large gross tonnage, unloading point more widely distributed and the number of points, a single point of unloaded by force, sometimes complex structure calculation and analysis of the unloaded work great. If you support the release of unreasonable force can cause structural damage or progressive instability scaffolding collapsed, the consequences are very serious. Installation of steel structures uninstall is a dynamic system, installation and construction phase constraints, load conditions and the stage of the design constraints are quite different loading conditions, the need for a lot of space force calculation. Must be based on the principle of transforming the system; to the core deformation coordination; real-time monitoring for the protection; to establish the necessary measures. To ensure the installation of steel structures uninstall safe, reliable manner.

Weled steel pipe specification, Standard and identification

Welded steel pipe (steel pipe manufactured with a weld) is a tubular product made out of flat plates, known as skelp, that are formed, bent and prepared for welding.



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