Full grouting sleeve for connecting of double bundled bars and connecting method of double bundled bars

Abstract

The invention discloses a full grouting sleeve for connecting of double bundled bars and a connecting method of the double bundled bars. The full grouting sleeve comprises a metal sleeve body (containing limiting stop blocks), two sealing rings and a grouting structure, wherein the metal sleeve body is used for connecting two sections of double bundled bars (two bundled bars), the two sealing rings are arranged at the two ends of the metal sleeve body, the grouting structure is formed by grouting materials grouted in a cavity between the metal sleeve body and the two sections of double bundledbars, and the metal sleeve body is in a straight line shape or a fish-bellied shape; the two sections of double bundled bars, corresponding to rebars, are distributed in the central axis of corresponding holes in the metal sleeve body; and a grout discharging hole and joint and a grout injecting hole and joint are formed in each side wall of the two ends of the metal sleeve body. The connecting method of the double bundled bars comprises the following steps that 1, the sealing rings are mounted, the double bundled bars are inserted in the metal sleeve body for positioning; 2, a grout discharging extension tube and a grout injecting extension tube are mounted (if necessary); 3, the grouting materials are grouted; and 4, curing is conducted. According to the full grouting sleeve for connecting of the double bundled bars and the connecting method of the double bundled bars, design is reasonable, construction is convenient, safe and economic, the connecting process of the double bundled bars can be completed efficiently, simply and conveniently, and connecting performance is reliable.

Description

technical field [0001] The invention belongs to the technical field of prefabricated concrete member construction, and in particular relates to a fully grouted sleeve for double parallel reinforcement connection and a double parallel reinforcement connection method. Background technique [0002] In order to reduce the self-weight of long-span and heavy-load concrete structural members in civil engineering fields such as construction engineering and bridge engineering, it is often necessary to control the cross-sectional dimensions of beams, slabs, columns and other members as much as possible during design, and there will be too many steel bars on the cross-section. Intensive conditions may lead to complex construction of concrete components and difficulty in controlling construction quality. [0003] In the actual design and construction process, civil engineers have given the "joint reinforcement" reinforcement configuration method to solve the problem of too many and too ...

AI Technical Summary

Problems solved by technology

[0010] When the reinforcement method of double parallel bars is introduced in the prefabricated concrete structural members due to the large number of steel bars, the connection between double parallel bars between two prefabricated components becomes a new problem in the engineering field. The connection method is aimed at a single steel bar. The lap connection method of double parallel bars in traditional cast-in-place concrete is inconvenient or even impossible to use in prefabricated concrete structures.

Although the connection method of welding is acceptable, there are many difficulties in ensuring the welding quality of double bars in adverse environments such as high altitude and on-site

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