Grouting sleeve and pre-fabricated part

Abstract

The invention belongs to the field of constructional engineering and particularly discloses a grouting sleeve and a pre-fabricated part.The grouting sleeve comprises a sleeve body, wherein a grouting opening and an exhaust port are formed in the sleeve body, one end of the sleeve body is open, the other end of the sleeve body serves as a connecting end, steel petals are arranged on the inner wall of the sleeve body, the thickness of the steel petals is gradually increased from the open end to the inside, and the width of the end, close to the connecting end, of each steel petal is greater than that of the end, close to the connecting end, of each steel petal.The arranged steel petals improve the overall rigidity of the sleeve body, the wall thickness of the sleeve body can be appropriately decreased on the premise that the rigidity is met, and materials are saved.In addition, grouted slurry form a locking-fixing structure matched with the sleeve inside and the steel pedals in the sleeve body, and the anchoring reliability of steel bars is remarkably improved.The accurate axial control and radial positioning of the steel bars can be achieved, and the positioning precision between the steel bars and the grouting sleeve can be ensured.

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

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