Pi-shaped piece node of flat steel tube concrete column

Abstract

The invention discloses a pi-shaped piece node of a flat steel tube concrete column. The pi-shaped piece node of the flat steel tube concrete column includes four corbels for being connected to a flatsteel tube concrete column of a rectangular structure and further includes four pi-shaped steel plates, the four corbels pass through the four pi-shaped steel plates to be positioned in the positions, used for connecting H-shaped steel beams, of the four side surfaces of the flat steel tube concrete column respectively, the four corbels are also fixedly connected with the connecting side surfacesof the flat steel tube concrete column by a welding method, the four H-shaped steel beams are fixedly connected with the four side surfaces of the flat steel tube concrete column through the four corbels respectively. Compared with a traditional external rib ring plate node, the pi-shaped piece node has a smaller convex angle in a room. The relative positions of beams and columns in a project canbe adjusted by adjusting the position of pi-shaped steel plate legs. The column at the entire joint is not broken, the node stiffness is ensured, the force is reasonable, the concrete is easy to pour, the construction process is simple, and the force transmission is clear.

Description

technical field [0001] The invention relates to a connection structure between a flat steel tube concrete column and four beams. In particular, it relates to a π-shaped joint of a flat steel pipe concrete column. Background technique [0002] Beam-column joints are one of the most important parts of the CFST column-steel beam frame structure system. According to my country's "Technical Regulations for Rectangular Steel Tube Concrete Structures" (CECS 159:2004) and related research results at home and abroad, the commonly used forms of beam-column joints include inner diaphragm joints, diaphragm through joints, outer ring plate joints, and outer rib joints. Ring plate nodes, etc. The inner diaphragm joints meet the requirements of rigid joints, and the beam flange and the inner diaphragm are applied with penetration welds on both sides of the same column wall. The steel has undergone two thermal processes, resulting in large welding residual stress, and brittle failure is pr...

AI Technical Summary

Problems solved by technology

[0003] At present, no one has studied the connection between flat columns and H-shaped steel beams; and in special-shaped column systems, it is often unavoidable to use flat columns, resulting in weak axis directions that cannot meet the requirements of strong nodes and weak members

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