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1、 Code for Acceptance of Construction Quality of Steel structural engineering GB50205-20018.2.1 The spacing between flange plate seam and web seam of welded H-shaped steel shall not be less than 200mm.
9.2.6 Component splicing welds should meet the requirements of the design documents.
9.2.5 When lengthening steel pipes, the longitudinal welds of adjacent pipe sections or sections should be staggered, and the minimum distance of staggered welding (along the arc length direction) should not be less than 5 times the wall thickness of the steel pipe, and should not be less than 200mm.
9.2.3 When there are no special requirements for design, hot-rolled steel sections used for secondary components can be spliced using straight full penetration welding, and the splicing length should not be less than 600mm.
When the diameter of the steel pipe d ≤ 500mm, it should not be less than 500mm; When the diameter of the steel pipe is 500mm ＜ d ≤ 1000mm, it should not be less than the diameter d; When the diameter of the steel pipe is greater than 1000mm, it should not be less than 1000mm; When the steel pipe is processed and formed by rolling, there can be several joints, but the shortest extension length should meet the requirements of paragraphs 1-3.
9.2.2 The splicing length of the side panels of box shaped components should not be less than 600mm, and the spacing between adjacent side panel splicing joints should not be less than 200mm.
When there are no design requirements, full penetration and equal strength butt welds should be used
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9.2.4 When extending steel pipes, each node should be a joint, and the shortest length of the extension should comply with the following regulations: 1.
The splicing length of the flange plate should not be less than 600mm; The width of web splicing should not be less than 300mm, and the length should not be less than 600mm.
The splicing length of the flange plate should not be less than twice the plate width, the splicing width of the web plate should not be less than 300mm, and the length should not be less than 600mm.
When the width exceeds 2400mm and splicing is necessary, the minimum splicing width should not be less than 1/4 of the board width.
This paper summarizes the relevant specifications and requirements for steel structure splicing.
The side panels should not be spliced in the width direction.
2、 Code for Construction of Steel structural engineering GB50755-201292.1 The spacing between flange plate seam and web seam of welded H-shaped steel should not be less than 200mm.
