Grouting casing pipe for steel bar connection and construction method thereof

Abstract

The invention relates to a grouting casing pipe for steel bar connection and a construction method thereof, wherein the grouting casing pipe comprises a pipe body, a grouting pipe, a grout discharging pipe, a connecting pipe and an adjusting valve; the pipe body is provided with a cavity inside, and insertion openings matched with steel bars are formed in the two opposite ends of the pipe body; the grouting pipe is fixed to the side wall of the bottom of the pipe body and communicates with an inner cavity; the grout discharging pipe is slantly arranged, the first end of the grout discharging pipe is fixed to the side wall of the pipe body and communicated with the inner cavity, and the second end of the grout discharging pipe is higher than the first end of the grout discharging pipe; the interior of the connecting pipe is through, the connecting pipe is fixedly inserted into the first end of the grout discharging pipe, and an opening in the first end of the connecting pipe is communicated with the pipe body; the adjusting valve is inserted into the connecting pipe in an elastic moving manner, and when the pipe body is not full of grout, the first end of the connecting pipe is opened through the adjusting valve, so that the grout in the grout discharging pipe is supplemented into the pipe body through the connecting pipe; and when the pipe body is filled with the grout, the first end of the connecting pipe is blocked through the adjusting valve. By means of the grouting casing pipe, the grout in the grout discharging pipe flows into the pipe body to be supplemented, it is ensured that the pipe body is full of the grout, and gaps exist in the pipe body are avoided.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a grouting sleeve for connecting steel bars and a construction method thereof. Background technique [0002] In prefabricated concrete buildings, grouting casing connection technology is often used to connect vertically arranged steel bars to each other. The specific method is to insert steel bars into the casing from both ends of the casing, and fill the casing with high-strength micro-expansion structural grouting material to firmly connect two adjacent sections of steel bars. [0003] However, when the grouting material in the casing cavity shrinks, under the action of gravity, voids are prone to appear at the top of the casing cavity, which easily reduces the structural strength of the grouting casing connection structure and affects the connection strength of two adjacent sections of steel bars. . SUMMARY OF THE INVENTION [0004] The purpose of the present invention...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art, provide a grouting casing for steel bar connection, and solve the problem that the top of the casing cavity in the prior art is prone to gaps and affect the connection strength of two adjacent sections of steel bars. question

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