One-way bolt connection node between rectangular steel pipe concrete column and H-type girders

Abstract

The invention relates to a one-way bolt connection node between a rectangular steel pipe concrete column and H-type girders. The one-way bolt connection node comprises a rectangular inner partition plate, two girder-end extension end plates and two partition plate-end extension end plates, and is characterized in that the two partition plate-end extension end plates are fixedly connected with two ends of the rectangular inner partition plate and placed on the column wall inner side of the rectangular steel pipe concrete column; the two girder-end extension end plates are respectively and fixedly connected with end parts of the two H-type girders; a plurality of bolt holes are formed in the corresponding positions of the two girder-end extension end plates, the two partition plate-end extension end plates and the column wall; the girder-end extension end plates, the column wall and two partition plate-end extension end plates, which are located on the same side of the rectangular steel pipe concrete column, are fixedly connected through a plurality of one-way bolts. The node, disclosed by the invention, causes less destruction to the steel pipe column, improves the bearing capacity, is free of weld joint, and shows not obvious stress concentration phenomenon; furthermore, the node can enable the girder locating construction to be convenient, and facilitates factory-like prefabrication and field assembly, so as to increase the field construction efficiency.

Description

technical field [0001] The invention belongs to the technical field of building structure engineering, and in particular relates to a one-way bolt connection node between a rectangular steel pipe concrete column and an H-shaped steel beam. Background technique [0002] Concrete-filled steel pipe structure refers to a structure formed by filling concrete in steel pipes. The existence of steel pipes can effectively restrain the core concrete, so that the compressive strength and deformation capacity of concrete can be significantly improved. At the same time, the existence of concrete can also effectively prevent Local buckling of the steel pipe is prevented, and the joint work of the two can give full play to the advantages of high tensile performance of steel and good compression performance of concrete, thereby greatly improving the bearing capacity. Concrete-filled steel tube structures are widely used because of their high bearing capacity, light weight, good plasticity a...

AI Technical Summary

Problems solved by technology

Due to its own structural measures, the node needs a large enough horizontal ring plate to ensure the strength of the node, and the amount of steel used is large

In addition, the setting of the large-sized outer ring plate makes the indoor corners have convex corners, which affects the appearance and home decoration, brings unnecessary troubles to the architectural design, and has poor adaptability and flexibility.

[0008] (4) Inner diaphragm joints have certain requirements for the size of rectangular steel pipes due to the need for diaphragm welding in rectangular steel pipes, because when the cross-sectional size is small, it is not only difficult to weld, but also affects the pouring of concrete in the pipe, so it is only applicable to steel pipes Nodes with larger cross-sectional dimensions

[0010] The typical bolt connection joint is the cross-bolt connection joint, which also has some problems. On the one hand, there are holes on both sides of the column wall, so that the column section is greatly weakened; on the other hand, when the joint is stressed The external end plate at the beam end in the tension zone will be separated from the column flange, and the bearing capacity of the joint will be determined by the bearing capacity of the bolt rod, and the bearing capacity of the square steel pipe column will not be exerted

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