Multi-cavity steel pipe and concrete combined column and steel beam U-shaped connecting joint and assembling method

Abstract

The invention relates to a multi-cavity steel pipe and concrete combined column and steel beam U-shaped rigid connecting joint and an assembling method. The multi-cavity steel pipe and concrete combined column and steel beam U-shaped rigid connecting joint comprises steel plates welded to the two sides of a multi-cavity steel pipe and concrete combined column, a side bottom plate is arranged between the steel plates, an upper cover plate is arranged on the upper wing edge of the steel beam, two connecting angles are arranged at a web plate of the steel beam, and the upper cover plate, the side bottom plate and the steel plates are connected. By means of the physical isolation of the beam and the column, the force transmission path of a traditional joint is changed, three-axis stress concentration is eliminated, a plastic hinge can be moved outwards to the beam from the joint, and the defects of tearing damage of the column wing edge of the traditional joint and the dependence of the rotating capability of the joint on the weak plate area of a column web are overcome. The design and principle for a strong column and a weak beam, and a strong joint and a weak component are met. Meanwhile, the joint can be divided into two parts which can be prefabricated in factories respectively, only simple assembling is needed in field installation, and thus the joint is simple in structure and high in assembling degree.

Description

technical field [0001] The invention relates to a multi-cavity steel pipe concrete composite column structure system in the technical field of construction engineering, in particular to a multi-cavity steel pipe concrete composite column and a steel beam U-shaped connection node and an assembly method. Background technique [0002] The multi-cavity concrete-filled steel tube composite column structure system, as a new type of concrete-filled steel tube column structure system, solves the problem of protruding column feet in residential systems. High strength, good plasticity and toughness, convenient construction and so on. [0003] At present, my country's "Technical Regulations for Rectangular Concrete-filled Steel Tube Structures" (GECS159: 2004) provides steel-beam joints for concrete-filled steel tube composite columns, which mainly include inner diaphragm type and outer ring plate type. But so far, there are the following deficiencies in the connection between the ste...

AI Technical Summary

Problems solved by technology

Because when the side length is small, it is not only difficult to weld, but also hinders the concrete pouring in the pipe. In addition, the beam flange and the inner partition plate penetrate the weld on both sides of the same column wall, and the steel produces a large welding residual stress, which makes the steel at the joint easy to produce delamination or brittle failure

[0005] (2) Affect the appearance and use of buildings

And when applied to corner columns, the horizontal ring plate not only hinders the installation of wall panels, but also causes the reinforcement ring to protrude from the building facade, causing convex corners at the indoor and outdoor joints, which affects the look and feel, which needs to be solved by decoration or ceiling

[0006] (3) The mechanical properties of joints and the simplicity and economy of construction cannot be both

In practical applications, some types of joints have better mechanical properties, and the overall stiffness of the joints is also good, but the amount of materials is large and the construction is complicated

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