Threaded grouting sleeve for three-parallel-bar connection in shape like Chinese character 'pin'

Abstract

The invention discloses a threaded grouting sleeve for three-parallel-bar connection in the shape like a Chinese character 'pin'. The threaded grouting sleeve comprises a sleeve body; the sleeve body is of a hollow structure; an upper sealing plug is arranged at an opening in the top of the sleeve body; a lower sealing plug is arranged at an opening in the bottom of the sleeve body; a grouting hole is formed in the side face of the bottom of the sleeve body; a slurry discharging hole is formed in the side face of the top of the sleeve body; a limiting partition is arranged in the sleeve body; the lower ends of upper end steel bars penetrate the upper sealing plug to be inserted in the sleeve body and then make contact with the limiting partition; the upper ends of lower end steel bars penetrate the lower sealing plug to be inserted in the sleeve body and then make contact with the limiting partition; a grouting material is poured in the sleeve body; and a plurality of shear keys and a plurality of threaded ribs are arranged on the inner wall of the sleeve body. The sleeve can be suitable for parallel bar connection, and reliability is high.

Description

technical field [0001] The invention belongs to the field of prefabricated building construction, and relates to a threaded grouting sleeve used for the zigzag connection of finished products with three parallel ribs. Background technique [0002] In the design of some long-span or high-rise structures and structures bearing heavy equipment loads, such as bridges and elevated stations, in order to reduce the self-weight of the structure while ensuring the ductility of the bearing capacity and other requirements, the cross-sectional size of the components is often controlled, resulting in a large amount of self-reinforcement , The tight arrangement makes it difficult for the steel bar spacing to meet the minimum net spacing requirements in the code; in addition, the dense steel bars will make it difficult to arrange and bind during the construction process, and it is difficult to vibrate the concrete pouring and other problems. [0003] In order to solve the problems in the a...

AI Technical Summary

Problems solved by technology

[0004] The emergence of combined reinforcement is mainly to solve the following reinforcement arrangement problems: 1. Cannot obtain sufficient diameter reinforcement or the reinforcement is limited according to the clear distance requirements; 2. The structural reinforcement is designed according to the clear distance limit and calculation needs, but cannot be arranged In the required position; 3. Dense reinforcement layout makes concrete pouring difficult

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