Steel structure box-type column beam and manufacturing method thereof

Abstract

The invention discloses a steel structure box-type column beam and a manufacturing method thereof. The steel structure box-type column beam comprises steel plates which are symmetrically arranged, pre-grooves are formed in the peripheries of the steel plates, and the two ends of each steel plate are bent in the same direction to form a first bent part and a second bent part; and the thickness of the steel plates is greater than 14 mm. The manufacturing method of the steel structure box-type column beam comprises the following steps that 1, according to the specification of the steel structurebox-type column beam, the steel plates with the length equal to that of the steel structure box-type column beam and the width equal to half of the perimeter of the steel structure box-type column beam are selected; 2, the two steel plates are respectively bent by adopting a kiloton-grade bending machine, so that the first bent part and the second bent part are both half of the width of the steelstructure box-type column beam, and arc-shaped bends are formed at the bent parts; and 3, the two steel plates are in butt joint, and after the welding faces are horizontally and upwards placed in a butt joint mode, welding is conducted in an automatic submerged-arc welding mode. The welding amount is reduced, the welding quality and process are easy to control, the working efficiency is high, meanwhile, the corners of the box-type column beam are arc-shaped bends, stress is dispersed, concentrated stress is avoided, base metal is arranged at the corners, damage is avoided, the structure is reasonable, and people are not prone to being hurt.

Description

technical field [0001] The invention relates to the field of steel structure prefabricated components, in particular to a steel structure box-shaped column beam and a manufacturing method thereof. Background technique [0002] At present, the steel structure box-shaped column girder is generally cut into two webs, two wing plates, and four steel plates by welding with fixed-width steel plates in steel factories. The production cost is high, the welding volume is large, the production speed is slow, and it is very expensive. It is difficult to meet the technical requirements of penetration welding, and the weld reliability is poor. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned technologies, and provide a steel structure box-shaped column beam and its manufacturing method. [0004] In order to solve the above technical problems, the technical solution provided by the present i...

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Problems solved by technology

[0002] At present, steel structure box-shaped column girders are generally cut into two webs, two wing plates, and four steel plates with steel plates of fixed width. The production cost is high, the welding volume is large, the production speed is slow, and it is very expensive. It is difficult to meet the technical requirements of penetration welding, and the weld reliability is poor

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