Full-grouting sleeve adopting eccentric connection of reinforcing steel bars and usage method of sleeve

Abstract

The invention discloses a full-grouting sleeve adopting eccentric connection of reinforcing steel bars and a usage method of the sleeve, belongs to the technical field of concrete buildings and can decrease the protection layer thickness, prevent concrete cracking and improve project quality. The sleeve comprises a sleeve body, wherein an upper inner cylinder and a lower inner cylinder are arranged in the sleeve body and communicated with each other; the sleeve is characterized in that the upper and lower inner cylinders are arranged eccentrically, and reinforcing steel bar limiting stop blocks are arranged at ends of inner sides of the upper and lower inner cylinders; and barbs are arranged on inner surfaces of the upper and lower inner cylinders respectively. The usage method comprises steps as follows: an exposed reinforcing steel bar of an assembled component is sleeved with the upper inner cylinder, and one end of the reinforcing steel bar reaches the position of the upper reinforcing steel bar limiting stop block; an exposed reinforcing steel bar of a to-be-assembled component is inserted into the lower inner cylinder, and one end of the reinforcing steel bar reaches the position of the lower reinforcing steel bar limiting stop block; a grouting material is injected into a grouting hole until the whole inner cylinders are filled with the grouting material; after the grouting material reaches the specified strength, strength checking is performed on a strength checking section.

Description

technical field [0001] The invention belongs to the technical field of concrete construction, and in particular relates to a steel bar eccentrically connected full grouting sleeve and a using method thereof. Background technique [0002] In recent years, the application of prefabricated concrete buildings has become more and more extensive. According to the design method of the cast-in-place process, the connection between the prefabricated assembled components depends on the butt joint of the steel bars of the traditional straight sleeve, which will lead to an increase in the concrete protective layer, making the concrete easier to crack and affecting the quality of the project. But this problem has not been effectively resolved, and was once ignored. [0003] At present, steel bar butt joints with straight sleeves are used in prefabricated concrete buildings. The connection of steel bars is one of the most critical processes in the construction process of prefabricated c...

AI Technical Summary

Problems solved by technology

According to the design method of the cast-in-place process, the connection between the prefabricated assembled components depends on the steel bar butt joint of the traditional straight sleeve, which will lead to an increase in the concrete protective layer, making the concrete easier to crack, and affecting the quality of the project

However, this problem has not been effectively solved and was once ignored

The connection of steel bars is one of the most critical processes in the construction process of prefabricated concrete buildings. Therefore, in order to avoid the safety hazard of concrete cracking caused by the traditional steel bar sleeve connection, it is necessary to design a new type of steel bar sleeve

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