Multi-cavity steel pipe concrete composite column and steel beam bolt connection node and assembly method

Abstract

The invention relates to a multi-cavity concrete filled steel tube combination column and steel beam bolt joint and an assembly method. The multi-cavity concrete filled steel tube combination column and steel beam bolt joint comprises steel plates arranged at the two sides of a multi-cavity concrete filled steel tube combination column, and a first ear plate is arranged at the top of each steel plate; an upper cover plate is arranged on the top flange of a steel beam, and a second ear plate is arranged at the bottom of the bottom flange of the steel beam; two connecting angles are arranged at the web plate of the steel beam, and the upper cover plate is connected with the first ear plate; the second ear plate is connected with the steel plate. The joint provided by the invention has high degree of assembly, and the multi-cavity concrete filled steel tube combination column, the steel plates, the steel beam, the upper cover plate, the second ear plate and the connecting angles are prefabricated in the factory, so that the workload of welding of installation is reduced, and the positioning assembly is only needed in on-site installation. The joint is simple in form, quick and convenient to install and has high degree of assembly. Since the traditional penetration welding is avoided during on-site installation, and the greater welding residual stress on steel products is easily generated by the traditional penetration welding, the steel products at the joint are easily laminated or brittlely fractured.

Description

technical field [0001] The invention relates to a structural system of a multi-cavity concrete-filled steel pipe composite column in the technical field of construction engineering, in particular to a connection node and an assembly method of a multi-cavity steel pipe concrete composite column and a steel beam bolt. Background technique [0002] The multi-cavity steel pipe concrete composite column composite structure system is a new type of steel pipe concrete composite column structure system that solves the problem of protruding column feet in residential systems. It has the advantages of high bearing capacity, good plasticity and toughness, and convenient construction. [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 follow...

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

Images