Modular hoisting and two-stage overall synchronous hoisting method for super-long-span steel roof

Abstract

This application involves the modular hoisting of super-large-span steel roofs, and a two-stage overall synchronous lifting method. The trusses on the west side of the steel roofs are used for assembly on the ground, and 250t crawler cranes are used to hoist them in place separately; the gate trusses, hall grids and The W-shaped oblique trusses are assembled on the ground at the same time, and the hoisting towers and temporary towers are erected. After the assembled hall grid is raised by 3m, it is docked with the gate truss, and then the rods are embedded, and then the welded roof The roof structure is raised again to the design position and docked with the side truss, and the corresponding position is embedded and repaired. After the welding is completed, the whole is unloaded, and the lifting tower is removed. This application is aimed at large-span steel roofs, two lifting processes, temporary towers and lifting towers The existence of the trusses plays a role in adjusting the posture during the hoisting of the steel roof, which improves the hoisting accuracy. The trusses on the west side are hoisted in sections, which reduces the area where the steel columns are embedded in the high-altitude rods, ensuring that the steel columns and support The installation accuracy of the seat node.

Description

technical field [0001] The application relates to the technical field of steel structures, in particular to a modular hoisting and two-stage overall synchronous hoisting method for super-large-span steel roofs. Background technique [0002] In the current society, the overall volume of buildings is gradually increasing to meet the various needs of human beings, and the construction of various large-span factory buildings has emerged as the times require. Steel structure is a structure composed of steel materials, which is one of the main types of building structures. [0003] The steel structure factory building adopts a prefabricated construction method. Steel columns and trusses form the general frame of the factory building. The truss in the truss structure refers to the truss beam, which is a lattice beam structure. Truss structures are often used in public buildings such as large-span factories, exhibition halls, gymnasiums and bridges. Trusses are also commonly refer...

AI Technical Summary

Problems solved by technology

Due to the maintenance process requirements, only one floor support column (column) is allowed within 405m of the span direction of the opening edge of the hangar. The airspace of the construction site has a height limit of 40m, and the structure at the edge of the hangar's entrance and exit covered by the steel roof is limited to less than 11.5m, and the reasonable height required for the structure to bear force is limited, so the traditional design scheme cannot be implemented

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