Double-side plate node using lower flange for connection and assembly method

Abstract

The invention relates to a double-side plate node using a lower flange for connection and an assembly method. The double-side plate node comprises steel plates, wherein the steel plates are arranged at the two sides of a multi-cavity steel pipe concrete combined column, and are connected by an edge bottom plate; an upper cover plate is arranged on an upper flange of a steel beam, through holes are formed in the bottom part of a lower flange of the steel beam, and the lower flange of the steel beam is arranged on the edge bottom plate; the upper cover plate is connected with the steel plates, and connecting angle steels are symmetrically arranged at the two sides of a web plate of the steel beam. The double-side plate node has the advantages that by separating the beam end and the column wall and using the full-height side plates, the connecting type and force transfer type of the multi-cavity steel pipe concrete combined column and the steel beam double-side plate rigid connecting node are particular; the force transfer path of the traditional node is changed by the physical isolation between the beam and column, and the three-axis stress concentration is eliminated; a plastic hinge is outwards transferred from the node to the beam, the tearing failure of traditional node column flange is avoided, and the defect of reliance of node rotating capability on the column web plate weak plate area is overcome.

Description

Technical field [0001] The invention relates to a multi-cavity steel tube concrete composite structure in the technical field of construction engineering, in particular to a double-sided plate node connected by a lower flange and an assembly method. Background technique [0002] The multi-cavity concrete-filled steel tube composite column composite structure system, as a new type of concrete-filled steel tube composite column structure system, solves the problem of the projecting of the column feet in the residential system. At the same time, this new structural system makes full use of the advantages of steel pipe and concrete. It has the advantages of high bearing capacity, good plasticity and toughness, and convenient construction. [0003] At present, my country's "Technical Specification for Rectangular Concrete Filled Steel Tube Structures" (GECS159: 2004) provides steel beam joints for concrete filled steel tube composite columns mainly in the form of inner diaphragm type an...

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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