Temporary locking device for butt welding of cantilever construction steel beam section, and construction method

A temporary locking and butt welding technology, applied in auxiliary devices, bridges, manufacturing tools, etc., can solve the problems of large welding workload, damage to the base metal of the roof, and a large number of pallets, so as to achieve less damage to the base metal and fast positioning speed. , Reliable effect of force transmission

Pending Publication Date: 2020-04-28

SHANGHAI MUNICIPAL ENG DESIGN INST GRP

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Problems solved by technology

[0005] The disadvantage of using code plates to temporarily lock steel beam segments is that there are many code plates, and the welding workload on site is large; the welds of code plates are short welds arranged intermittently, and arc strike plates and arc extinguishing plates cannot be used due to short welds. The welding process will inevitably lead to damage to the base metal of the top plate; during the removal process of the code plate, it should be preheated before cuttin...

Abstract

The invention particularly relates to a temporary locking device for butt welding of a cantilever construction steel beam section. The temporary locking device is used for temporarily locking an installed steel beam section and the cantilever hoisting steel beam section. The temporary locking device comprises: stiffening plates, the stiffening plates are arranged at corner points of all box chambers in a steel beam, and the stiffening plates are welded to the inner side of a web of the steel beam; and connecting plates, wherein one ends of the connecting plates are connected with the stiffening plates on the inner side of the steel beam web of the installed steel beam section through bolts, the other ends of the connecting plates are connected with the stiffening plates corresponding to the inner side of the steel beam web of the cantilever hoisting steel beam section through bolts to achieve temporary locking of butt welding of the cantilever construction steel beam section. The temporary locking device for butt welding of the cantilever construction steel beam sections can rapidly position and temporarily lock the cantilever construction steel beam sections for butt welding, andhas the advantages of being simple in structure, reliable in performance, small in damage to base metal, convenient to disassemble and assemble and the like.

Application Domain

Welding/cutting auxillary devicesAuxillary welding devices +2

Technology Topic

PhysicsEngineering +5

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[0028] Below in conjunction with the accompanying drawings, the features of the present invention and other related features will be described in further detail by embodiments, so as to facilitate the understanding of those skilled in the same industry:

[0029] like Figure 1-Figure 4 , the marks in the figure include: stiffening plate 1, connecting plate 2, torsional shear type high-strength bolt 3, temporary locking device for steel beam segment 4, steel beam web 5, butt welding distance 6. In the drawings, the same components are given the same reference numerals. The drawings are not drawn to actual scale.

[0030] like figure 1 As shown, the steel girder section N+1 is hoisted to the front of the installed section N by the bridge deck crane, and the axis, longitudinal slope and transverse slope of the steel girder section N+1 are adjusted by the bridge deck crane for initial positioning. The temporary locking device of the present invention locks the steel beam segments to be accurately positioned, and then completes the butt welding between the steel beam segments N and N+1.

[0031] like figure 2 As shown in the figure, the temporary locking device of the steel beam segment is arranged at the corner of each box inside the steel beam, and welded to the inner side of the web. The position of the temporary locking device and the spacing of the bolt holes should be determined by factory pre-assembly.

[0032] like image 3 , Figure 4 As shown, the temporary locking device for butt welding of cantilever construction steel beam segments is composed of a stiffening plate 1 , a connecting plate 2 and a torsional shear type high-strength bolt 3 . The stiffening plate 1 is welded to the steel beam web 5 through fillet welds, and the position of the stiffening plate and the bolt hole spacing of the steel beam segment N+1 are determined by factory pre-assembly.

[0033] After the initial positioning of the axis, longitudinal slope and transverse slope of the steel girder section N+1 is completed by the bridge deck crane, the connecting plate 2 and the torsional shear type high-strength bolt 3 are connected to the stiffening plate 1 to quickly realize the steel girder section N+ 1 Positioning. Since there is a gap between the stiffening plates, the butt welding distance 6 required by the base material, that is, the web 5 of the steel beam can be guaranteed. After the butt welding is completed, the construction of this section can be completed by removing the bolts and connecting plates.

[0034] The cantilever construction steel beam segment butt welding temporary locking device can quickly locate and temporarily lock the cantilever construction steel beam segment for butt welding, and has the following advantages: 1. Simple structure and reliable force transmission; 2. Fast positioning of steel beam segments; ③ Fewer welds and less damage to the base metal; ④ Easy disassembly and assembly.

[0035] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be construed as limiting the present invention, and the scope of protection of the present invention should be defined by the appended claims.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Reliable power transmission
simple structure

Support-free primary and secondary beam system, construction method thereof and prefabricated superposed main beam notch mold

PendingCN112431351AReliable power transmissionReduce mold cost

Owner:福建建工装配式建筑研究院有限公司

Temporary locking device for butt welding of cantilever construction steel beam section, and construction method

AI-Extracted Technical Summary

Problems solved by technology

Abstract

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Description & Claims & Application Information

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