Oblique crossing circular pipe intersection face inner insertion plate turning connection structure

Abstract

The invention relates to a welding method for steel pipe intersection in the construction industry and is suitable for multi-limb steel pipe bearing column vertical intersection connection and stiffness enhancing, assembly welding, butt joint and construction. An oblique crossing circular pipe intersection face inner insertion plate turning connection structure comprises oblique crossing circular pipes and a pier connected with the oblique crossing circular pipes, a longitudinal turning connection plate is axially inserted in an intersection face of the oblique crossing circular pipes in a through mode, the longitudinal turning connection plate extends out of the intersection face in the radial direction and axially extends into the pier, limb pipes of the oblique crossing circular pipes are fixed to the longitudinal turning connection plate in a welded mode, and the longitudinal turning connection plate is fixed to the pier in a welded mode. The limb pipes and turning connection plates inserted in the intersection face are independently welded through a multi-limb steel pipe column intersection technology, stress dependence of the limb pipes to limb pipe connection is eliminated, engineering reliability is high, and welding technological quality is guaranteed. By means of the intersection face inner insertion plate turning connection structure, machining problems are solved, layer-to-layer section tearing resistance of crossing portions is enhanced, and the safety coefficient is improved.

Description

technical field [0001] The technology of the invention relates to a welding method for the intersection of steel pipes in the construction industry, which is suitable for the vertical intersection connection of multi-leg steel pipe load-bearing columns and the butt joint construction of rigidity-enhanced group welding. Background technique [0002] With the rapid development of the current building steel structure, the traditional large-scale frame body has been able to innovate and break through explosively. The large-volume special-shaped steel frame load-bearing components emerge in an endless stream in the field of large-scale public construction facilities and super-high cylinder buildings, such as Y-shaped stepped columns and X-shaped columns. Various types of large-section multi-leg converging steel pipe columns such as spindle columns not only have strong spatial effects, but also have strong integrity. In the specific processing and manufacturing process, the conven...

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Problems solved by technology

In the specific processing and manufacturing process, the conventional splicing method is to directly perform groove group pair welding at the fracture position of the confluence side line of the steel pipe column, or adopt groove group butt welding after the built-in stiffener plate on the confluence surface. Although the "pipe-pipe" connection method is direct, as a vertical load-bearing body of a large building, the requirements for bending resistance and interlayer tear resistance at the joints and forks cannot be underestimated. The interdependence of multi-leg columns is enhanced, and the abnormal performance of a certain limb tube and joint will directly affect the load-bearing effect of the entire special-shaped column, and the structural safety reserve is almost zero. The quality requirements of welding seams between joints are cautious, which to a large extent restricts the application of multi-leg space frame load-bearing steel pipe columns.

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