A sleeve grouting joint for prefabricated buildings and its application method

Abstract

The invention discloses a sleeve grouting joint used for an assembly building and a use method thereof, and belongs to the field of construction engineering. The joint includes a sleeve, a first connecting bar and a second connecting bar. The middle of the sleeve is provided with a connecting bar limiting device for limiting the axial directions of the first connecting bar and the second connecting bar. The connecting bar limiting device includes a limit baffle, the limit baffle is arranged in an inner cavity of the sleeve and located between the first connecting bar and the second connectingbar, the limit baffle is arranged between the first connecting bar and the second connecting bar for positioning the first connecting bar and the second connecting bar respectively, thus the length ofthe portions, needed to be inserted into the sleeve, of the first connecting bar and the second connecting bar can be controlled, and the connection strength of the two ends of the sleeve is more balanced. According to the joint, before grouting, the limit baffle moves radially for avoidance, thus slurry can flow better in the sleeve, the possibility of air holes existing in the sleeve is reduced, and thus the strength of the sleeve grouting joint is improved relatively.

Description

Technical field [0001] The invention relates to the technical field of construction engineering, in particular to a sleeve grouting joint for fabricated construction and a use method thereof. Background technique [0002] Rebar sleeve grouting connection technology means that ribbed steel bars are inserted into a grouting sleeve with a concave-convex surface. The gap between the sleeve and the steel bar is poured into a special high-strength cement-based grouting material. After the grout is solidified, the steel bar is anchored in the sleeve. A reinforcement connection technology for prefabricated components. This technology embeds the grouting sleeve in the concrete component, and injects the grouting into the sleeve from the prefabricated component through the grouting pipe at the installation site to complete the connection of the prefabricated component steel bar. It is the main form of the prefabricated component’s stressed steel connection , Mainly used for the connection...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, in order to ensure the connection strength of the steel bars at both ends, it is necessary to axially locate the steel bars at both ends, but the internal fluidity of the sleeve that can be positioned is poor, and the grouting material is not easy to flow out from the grout hole, which easily leads to residual air inside , there are air holes, which affect the strength of the sleeve grouting joint

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