Grouting sleeve and fabricated part

Abstract

The invention belongs to the field of building engineering and particularly relates to a grouting sleeve and a fabricated part. The grouting sleeve comprises a sleeve body, wherein a grouting hole and an exhausting hole are formed in the sleeve body; one end of the sleeve body is opened and the other end of the sleeve body is a connection end; a steel section is arranged on an inner wall of the sleeve body; the thickness of the steel section is gradually increased from the opening end to the inside; an inner retractable step is arranged on the inner wall of the steel section. The steel section is arranged so that the whole rigidity of the sleeve body is increased; meanwhile, the wall thickness is reduced under the condition that the outer diameter is the same; a grouting material is added so that grouting is relatively dense; the whole bonding property of a steel bar and the sleeve body is relatively strong. Furthermore, grouted slurry forms a locking structure, which is matched with the inner hollow part of the sleeve and the steel section, in the sleeve body, so that the anchoring reliability of the steel bar is greatly improved; accurate axial control and radial positioning of the can be realized, and positioning precision between the steel bar and the grouting sleeve is guaranteed.

Description

technical field [0001] The invention belongs to the field of construction engineering, in particular to a grouting sleeve and a prefabricated part. Background technique [0002] In the traditional cast-in-place concrete structure, the steel bars are often connected by mechanical connection methods such as lap joints, welded joints or extrusion sleeves. The construction of the steel bar connection is relatively complicated, and the steel bar connection must be completed before pouring the concrete, which cannot The connection of steel bars between prefabricated parts makes it impossible to carry out prefabricated construction. [0003] In the prior art, the steel bar connection between the prefabricated concrete building parts needs to be connected by sleeve grouting. The two connected steel bars are inserted into the metal sleeve and high-performance cement mortar is poured into the gap between the sleeve and the steel bar. After the cement mortar is hardened, the three are...

AI Technical Summary

Problems solved by technology

However, the setting of the tapered tube in the above-mentioned grouting sleeve makes the inner diameter of this part suddenly smaller. Because the steel bar has a certain rigidity, it is difficult to make the steel bar to be connected on the same straight line, and it is even impossible to extend the steel bar to the end of the sleeve. Inside, there is a defect in the force

Images