Reverse assembly method of unexposed sleeve concrete prefabricated wallboard

Abstract

The invention discloses a reverse assembly method of an unexposed sleeve concrete prefabricated wallboard. The unexposed sleeve concrete prefabricated wallboard comprises a wallboard, the wallboard isprefabricated in the top part of the wallboard, the upper opening of the sleeve and the top part of the wallboard are flush, and no holes or connecting pipes are arranged on the side of the sleeve; the bottom of the sleeve is in threaded connection with main ribs in the wallboard, the wallboard is exposed from the bottoms of the main ribs to form anchor steel bars with the lower layer of the wallboard; when assembling, anchoring mortar is injected into dowel bar holes of the sleeve, then anchor steel bars at the lower end of the upper layer wallboard is inserted downwards into the dowel bar holes; and when wallboard reinforcing steel bars are bond, the op part of the sleeve is tightly pressed on the mold. According to the reverse assembly method of the unexposed sleeve concrete prefabricated wallboard, construction is convenient, and the connecting quality is good; holes face upward and steel bars are downward when installing, inserting of the steel bars into the holes can be viewed through the eyes of an operator by looking downwards, lateral grouting holes do not need to be formed in the wallboard or the sleeve as long as the anchoring mortar is injected into the dowel bar holesin advance, and the steel bars of the upper layer wallboard are inserted downwards into the holes.

Description

technical field [0001] The invention relates to an assembly method of a concrete prefabricated wall panel without a sleeve exposed. Background technique [0002] At present, in the Chinese market, concrete prefabricated buildings have sprung up like bamboo shoots after a spring rain, and are developing rapidly, but the quality of the joints has not been solved satisfactorily, especially the connection between the upper and lower wall panels adopts the connection method of upper ribs and lower tubes. When prefabricating walls and columns, it is customary to set the sleeves and grouting holes at the root, and the anchoring steel bars at the upper part. When installing, the holes are at the bottom of the wall column, facing downward, and the lower wall column-type steel bars are facing upward. People have to bend down or climb on the floor and turn their head upwards to see holes and steel bars. It is very difficult to insert bars across the eyes, and sometimes it is difficult ...

AI Technical Summary

Problems solved by technology

In fact, sampling inspection from the site shows that it is difficult to fill the grout above the overflow hole, and the proportion of sleeves that are filled with grout in the sleeve is not ideal, and the connection quality cannot be guaranteed.

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