Manufacturing process of a heavy-duty hyperboloid curved steel box girder

Abstract

The invention relates to the field of the production of heavy irregular steel structure, and in particular to a heavy double hyperbolic arc steel box girder production process. The process comprises the steps of at first using digital twisting machine to produce a center plate and a wing plate, using trolley type semi-automatic arc groove cutting machine to produce a groove in the hyperbolic direction, producing an arc bed-jig, assembling hyperbolic arc steel box girder, then using a total station to caliber the assembly deformation, using trolley type semi-automatic arc groove cutting machine to conduct the priming, filling and cover welding at a groove in the corner joint between the center plate and the wing plate in the hyperbolic arc steel box girder, after the welding, using a standard angle template to caliber the welded joint. The process effectively solves the problem that the traditional steel structure welding process can hardly produce the hyperbolic arc steel box girder. The process has the advantages of being smooth in cutting surface, being standard, being high in welding speed, good in welding seam quality, thus effectively ensuring the processing quality and precision of heavy hyperbolic arc steel box girder, and possessing bright promotion prospect.

Description

technical field [0001] The invention relates to the field of manufacturing heavy irregular steel structures, in particular to a manufacturing process of heavy hyperboloid curved steel box girders. Background technique [0002] The steel structure has high strength, good plasticity and toughness, good ductility and other characteristics, which determine its excellent seismic performance, and also makes steel structures widely used in high-rise buildings, long-span space structures and bridges. [0003] With the rapid development of the construction industry, in addition to excellent seismic performance, large buildings have higher and higher requirements for visual aesthetics. In order to meet the visual aesthetic requirements of large buildings (especially high-rise buildings), more and more large-scale Complex special-shaped steel structures need to be constructed, and such large and complex special-shaped structures are often characterized by irregular shapes and multi-cur...

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Problems solved by technology

[0009] In order to solve the problem that the traditional steel structure welding process is difficult to manufacture heavy hyperboloid curved steel box girder, the present invention provides a heavy hyperboloid curved steel box girder manufacturing process, which can effectively solve the problem of traditional welding technology in the production of heavy hyperboloid curved steel box girder. A series of problems occurred in the process of box girder, such as irregular groove cutting, unqualified weld inspection and repair

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