A semi-grouting sleeve assembly and its installation method

Abstract

The invention belongs to the technical field of connecting prefabricated building components, and in particular relates to a half-grouting sleeve assembly and an installation method thereof. In order to ensure the structural strength of the existing half-grouting sleeve, the connection length between the steel bar and the sleeve is relatively large, the present invention adopts the following technical solution: a half-grouting sleeve assembly, including: a first steel bar; a second steel bar, The second steel bar has a first tensile part; a first sleeve; a connecting sleeve, the connecting sleeve includes a small-diameter section and a large-diameter section, and the end of the large-diameter section away from the small-diameter section is also provided with a diameter for the second steel bar. The side wall of the reinforcing bar containing groove is provided with a second tensile part; a second sleeve. The beneficial effects of the present invention are: the connecting sleeve can be adjusted radially relative to the second steel bar, thereby facilitating alignment; the cooperation between the first tensile part and the second tensile part improves the strength without increasing the connection between the steel bar and the connecting sleeve The length is to strengthen the connection performance between the steel bar and the connecting sleeve.

Description

technical field [0001] The invention belongs to the technical field of connecting prefabricated building components, and in particular relates to a half-grouting sleeve assembly and an installation method thereof. Background technique [0002] The existing prefabricated component reinforcement connections mainly include mechanical sleeve connection and grouting sleeve connection. The sleeve cost of the mechanical sleeve connection method is low, but it requires high precision in the manufacture of prefabricated components. The center deviation of the longitudinally stressed steel bars is generally not greater than 0.25mm, and the operation space of the node connection is also large, and the construction is very difficult. . In many cases, due to the unavoidable center eccentricity, the connection of stressed steel bars of vertical members cannot be connected with mechanical sleeves or the connection quality cannot meet the specification requirements. [0003] The grouting ...

AI Technical Summary

Problems solved by technology

Since the strength of the existing grouting material is significantly lower than that of the steel bar, in order to ensure that the tensile strength of the sleeve after grouting meets the specification requirements, the existing technology often adopts the method of increasing the connection length between the steel bar and the sleeve (that is, increasing the contact area between the steel bar and the grouting material) ) to strengthen the connection performance between the steel bar and the sleeve, resulting in a significantly higher application cost of the sleeve (because the length of the sleeve will increase the cross-section of the beam and column, resulting in a higher overall application cost of the prefabricated building)

In addition, the sleeve grouting process is a hidden project, and there is no good detection method at present. If the sleeve grouting is not enough, it is not easy to find out, and the grouting quality is not easy to guarantee. If the sleeve grouting is not full, the steel bar and the hardened grouting material will not be firm. connection, thus affecting the structural safety performance of prefabricated buildings

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