Extrusion semi-grouting reinforcement sleeve, connecting structure and construction method thereof

Abstract

The invention relates to an extrusion semi-grouting reinforcement bar sleeve, a connecting structure and a construction method thereof. The sleeve is a hot-rolled seamless steel pipe, a grouting hole and a slurry outlet are formed in the tube wall of the sleeve, annular concave bulges are distributed between the grouting hole and the slurry outlet, one end of the sleeve is an extrusion end, the other part of the sleeve is the slurry anchor end, the internal diameter of the extrusion end is equal to the external diameter of each of connected reinforcement bars and is smaller than that of each slurry anchor end, and the grouting hole, the slurry outlet and the annular concave bulges are all positioned at the slurry anchor end. According to the extrusion semi-grouting reinforcement bar sleeve, the connection among the reinforcement bars is realized by the utilization of the semi-grouting reinforcement bar sleeve, one end part of the sleeve is connected with the reinforcement bars by adopting an extrusion connection technology, and the other part of the sleeve is still connected with the reinforcement bars in a grouting way; the extrusion semi-grouting reinforcement bar sleeve can be widely applied to the reinforcement bar connection of precast concrete columns in a multi-high-rise precast concrete frame structure and a shear wall structure or a frame shear wall structure, the horizontal reinforcement bar connection of a precast concrete beam, the reinforcement bar connection of the precast concrete shear wall and the reinforcement bar connection in an existing reinforcement project.

Description

technical field [0001] The invention relates to a grouting sleeve and a construction method thereof. Background technique [0002] At present, in the prefabricated and assembled reinforced concrete structure system, the design method equivalent to cast-in-place is mostly used, which puts forward high requirements on the reliability of the reinforcement connection between prefabricated components. At the same time, the following problems still exist in this system: [0003] 1. The overlapping and welding connection methods of steel bars used in traditional cast-in-place structures are not suitable for the process requirements of prefabricated component assembly; [0004] 2. The existing cast steel grouting sleeve adopts precision casting process, which is prone to casting defects, difficult to guarantee quality and high cost; [0005] 3. The existing grouting sleeve processed by mechanical cutting of steel rods has a large cutting workload and high cost; [0006] 4. The ex...

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Problems solved by technology

[0007] The purpose of the present invention is to provide an extruded semi-grouting steel bar sleeve, connection structure and construction method thereof, to solve the technical problems of low processing efficiency and complex process of the existing grouting sleeve; and to solve the problem of improving the reliability of steel bar connection

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