Square sleeve circular hollow interlayer steel pipe concrete column and steel beam joint internally provided with PBL ribs

Abstract

The invention relates to a square sleeve circular hollow interlayer steel pipe concrete column and steel beam joint internally provided with PBL ribs. The square sleeve circular hollow interlayer steel pipe concrete column and steel beam joint comprises external square steel pipes 1, an internal circular steel pipe 2, an external reinforcing ring 3, the PBL ribs 4, concrete 5, steel beams 6 and weld joints 7. The PBL ribs are symmetrically arranged on the outer surface, in the length direction of the internal circular steel pipe, of a joint area. The PBL ribs and the internal circular steel pipe as well as the external reinforcing ring and the external square steel pipes are connected by adopting fillet weld. The steel beams and the external reinforcing ring are welded by adopting butt welding. According to the square sleeve circular hollow interlayer steel pipe concrete column and steel beam joint, the contact area of the internal circular steel pipe and the concrete is increased, therigidity of the joint area is enhanced, the shear capacity and the anti-deformation capability of a joint core area are enhanced, and the square sleeve circular hollow interlayer steel pipe concretecolumn and steel beam joint has the advantages that stress is reasonable, force transmission is clear, the installation progress is high, and the construction speed is high.

Description

technical field [0001] The invention relates to a joint with PBL rib square sleeve circle hollow interlayer concrete filled steel pipe column and steel beam, which belongs to the technical field of civil structure joints. Background technique [0002] As a composite structure with broad prospects for development, concrete filled steel tubes give full play to the advantages of steel tubes and concrete. in the bridge. The application process will inevitably involve the connection node between the hollow interlayer concrete-filled steel tube column and the rigid frame beam that is widely used at present, which has always been the main factor restricting the promotion of the hollow concrete-filled steel tube structure. At this stage, most of the problems of hollow interlayer concrete-filled steel tube and steel beam joints are solved by the half-interpenetration method of steel beams, but the strength of steel tube concrete will be significantly reduced after the steel tube wal...

AI Technical Summary

Problems solved by technology

At the present stage, most of the joints between hollow interlayer concrete filled steel tubes and steel beams are solved by using the method of semi-interspersed steel beams, but the strength of steel tube concrete will be significantly reduced after the steel tube wall is opened, and the joints will suffer obvious shear damage.

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