Steel wire mesh cylinder with preformed hole and method for carrying out steel bar connection

Abstract

The invention discloses a steel wire mesh cylinder with a preformed hole and a method for carrying out steel bar connection. The traditional anchoring of a steel bar is carried out by using method for pre-embedding a solid mold core, which needs a large quantity of mold cores. In the invention, the steel wire mesh cylinder with the preformed hole includes a steel wire mesh cylinder (1), wherein one end of the steel wire mesh cylinder is opened while the other end is enclosed; a spiral groove (2) is arranged outside the cylinder; the steel wire mesh cylinder is provided with an air outlet hole (4) which is communicated with the inner side of the cylinder and close to the enclosed end; the steel wire mesh cylinder is provided with a grouting hole (3) which is communicated with the inner side of the cylinder and close to the opening end; and the opening of the steel wire mesh cylinder is pre-embedded outwards in the inner side of precast concretes (5). When being used, the steel wire mesh cylinder with an outward opening is pre-embedded inside the precast concretes, the steel bar is inserted into the opening end and blocked, the grouting is carried out on a grouting hole, and the air outlet hole naturally exhausts the air so as to anchor the steel bar. The invention is used for carrying out steel bar anchoring and lap joint among structural members of the precast concretes.

Description

Technical field: [0001] The invention relates to a steel bar anchorage and lap connection method for prefabricated concrete structural members, in particular to a steel wire mesh cylinder with reserved holes and a method for connecting steel bars. Background technique: [0002] In prefabricated concrete structures, the anchoring connection of steel bars mostly adopts the lap joint connection method of grouting steel bars with reserved holes, but the traditional method of reserved holes mostly uses the method of pre-embedding solid mold cores. Due to the large number of steel bars in concrete components, so A large number of mold cores are needed to make the reserved holes, and the mold cores can only be withdrawn after the concrete has solidified and hardened, which will seriously affect the production process. Invention content: [0003] The object of the present invention is to provide a steel mesh cylinder with reserved holes and a method for connecting steel bars, so t...

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Problems solved by technology

[0002] In prefabricated concrete structures, the anchoring connection of steel bars mostly adopts the lap joint connection method of grouting steel bars with reserved holes, but the traditional method of reserved holes mostly uses the method of pre-embedding solid mold cores. Due to the large number of steel bars in concrete components, so A large number of mold cores are required to make the reserved holes, and the mold cores can only be withdrawn after the concrete has set and hardened, which will seriously affect the production process

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