Assembling method for forward and reverse assembling combination of ultra-wide framing steel box girders

Abstract

The invention relates to an assembling method combining forward and reverse installation of an ultra-wide framing steel box girder. The ultra-wide framing steel box girder comprises a bridge deck, a T-shaped beam and a box beam. The assembling method is characterized by comprising the following specific steps: S1, designing a jig frame; s2, bridge deck slab splicing; s3, assembling and welding the T-shaped beam; s4, assembling and welding the box beam; s5, turning over and welding the box beam; the bridge deck slab units are installed upside down, assembling and welding of the bridge deck slab units can be rapidly completed, the box beams are installed upside down, and assembling and welding of the box beams can be facilitated; turning over the positively mounted box beam and welding the box beam with the bridge deck unit; a side edge structure is formed between the forward box beam and the inverted bridge deck unit for welding, so that the problem that the deformation range of the forward box beam and the inverted bridge deck unit is enlarged after the forward box beam and the inverted bridge deck unit are welded due to the adoption of an inverted mode is avoided, the overall deformation condition after welding can be effectively reduced, the overall molded line after welding is improved to meet the set requirement, the subsequent finishing time is shortened, and the production efficiency is improved. The efficiency is improved, and resources are saved.

Description

technical field [0001] The invention relates to the technical field of assembly and welding of ultra-wide framed steel box girders, in particular to an assembling method for super-wide framed steel box girders with forward and reverse chip combination. Background technique [0002] In general ultra-wide framed steel box girder structures, each component needs to be assembled and welded to form an overall steel box girder structure after the production of each component is completed. Generally, the part of the bridge deck unit is assembled and welded by flip-chip, that is, first Assemble and weld the bridge deck unit, and then install and weld the beam and longitudinal beam structure on the back of the bridge deck unit; generally, the box girder structure located on both sides of the bridge deck unit adopts the same welding method as the bridge deck unit, that is, flip-chip Then assemble and weld the box girder in the inverted state and the bridge deck; in this ultra-wide fra...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an assembling method for super-wide framing steel box girder forward and backward, which can solve the problem of the general ultra-wide framing steel box girder being assembled and welded in a completely reversed way, and the profile control The problem of poor performance

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