Connection joint of concrete filled steel tubular column and beams

Abstract

The invention provides a connection joint of a concrete filled steel tubular column and beams, and belongs to the field of architectural structures. The peripheral surface of a steel column jacket at the connection joint bodies of the concrete filled steel tubular column and the beam ends is sleeved with a steel sleeve in a matched mode, the edge of the upper end and the edge of the lower end of the steel sleeve are fixedly welded to the steel column jacket, the peripheral surface of the steel sleeve is radially connected with steel connection boards corresponding to the beam ends at intervals, a circle of upper opposite-pull steel bar hole set and a circle of lower opposite-pull steel bar hole set which are correspondingly through are formed in the periphery of the steel sleeve and the inner layer of the steel column jacket, opposite-pull steel bars correspondingly penetrate through the upper opposite-pull steel bar hole set and the lower opposite-pull steel bar hole set, and namely an upper opposite-pull steel bar grid net and a lower opposite-pull steel bar grid net are formed in the steel column jacket of the concrete filled steel tubular column; the steel connection boards and the sleeve wall of the steel sleeve outside the concrete filled steel tubular column are correspondingly connected with webs of H-type steel connectors at the beam ends and upper and lower wing edge board ends respectively, and the concrete filled steel tubular column and the beams are connected in an integrated mode after a concrete layer in the steel column jacket of the concrete filled steel tubular column is poured. According to the connection joint, the overall strength of the concrete filled steel tubular column is enhanced by enhancing the joint bodies.

Description

technical field [0001] The invention relates to a joint between a steel pipe concrete column and a beam, belonging to the field of building structures. Background technique [0002] Concrete-filled steel tube columns are widely used in steel structures and steel-concrete structures because of their good mechanical properties. , the commonly used treatment measures are to use externally reinforced ring plates and internal partitions. Although the externally reinforced ring plate method is convenient to manufacture, material waste is serious when making ring plates; internal partitions are divided into two cases: cutting columns and not cutting columns. The internal partition of the column has high requirements on the welding process, which is not easy to realize, and is rarely used in general buildings; the internal partition of the cut column is as follows: Figure 13 As shown, the steel column is cut into three sections A1, A2, and A3 at the node, and then welded with two t...

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Problems solved by technology

[0002] Concrete-filled steel tube columns are widely used in steel structures and steel-concrete structures because of their good mechanical properties. , the commonly used treatment measures are to use externally reinforced ring plates and internal partitions. Although the externally reinforced ring plate method is convenient to manufacture, material waste is serious when making ring plates; internal partitions are divided into two cases: cutting columns and not cutting columns. The internal partition of the column has high requirements on the welding process, which is not easy to realize, and is rarely used in general buildings; the internal partition of the cut column is as follows: Figure 13 As shown, the steel column is cut into three sections A1, A2, and A3 at the node, and then welded with two through-hole inner partitions D. This type of node structure has potential safety hazards for the column. Therefore, it is necessary to develop a simple, convenient, Safe and reliable beam-column joint structure

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