A pre-embedded component of wall tie bars and its construction method

Abstract

The present application relates to a pre-embedded assembly of wall tie bars, including a pre-embedded sleeve pre-embedded in the wall and a tie piece connected to the pre-embedded sleeve. The inner peripheral wall of the pre-embedded sleeve is provided with a second A helical groove, the tie is a columnar structure, the outer peripheral wall of the tie is provided with a second helical groove, the first helical groove and the second helical groove are combined to form a helical cavity, and the helical cavity The inside is filled with a plurality of steel balls along its own spiral path. In this application, by setting the steel balls stuck between the first helical groove and the second helical groove at the same time, the pulling force on the tie piece is converted into the shear stress on the steel balls, and the structure of the steel balls is denser and stronger. , not easy to be crushed, and the steel ball can effectively resist the shear stress, thereby greatly improving the pull-out strength of the tie.

Description

technical field [0001] The present application relates to the field of tie bar structures, in particular to a wall tie bar pre-embedded component and a construction method. Background technique [0002] Tie bars refer to the steel bars that tie the rear masonry and concrete components together, which can ensure the reliable connection between the rear masonry and concrete components, and enhance the overall stability of the rear masonry. [0003] The commonly used connection construction method is to first drill holes in the concrete member (wall body), inject structural glue after clearing the holes, and then insert tie bars to complete the planting of bars. [0004] In view of the above-mentioned related technologies, the inventor believes that there are the following defects: the connection strength between the tie bars and the structural adhesive is low, resulting in poor pull-out strength of the tie bars, which cannot fully ensure that the strength of the pull-out test ...

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Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that there are the following defects: the connection strength between the tie bars and the structural adhesive is low, resulting in poor pull-out strength of the tie bars, which cannot fully ensure that the pull-out test strength is qualified, and the drilling The wall of the hole will be affected by dust and sand, which will affect the curing effect of the structural adhesive and further affect the pullout strength of the tie bars

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