Full grouting sleeve for connecting of three-bundled-bar bundles and connecting method of three-bundled-bar bundles

Abstract

The invention discloses a full grouting sleeve for connecting of three-bundled-bar bundles and a connecting method of the three-bundled-bar bundles. 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 three-bundled-bar bundles (three-bundled-bar row), 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 three-bundled-bar bundles, and the metal sleeve body is in a straight line shape or a fish-bellied shape; the two sections of three-bundled-bar bundles, 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 themetal sleeve body. The connecting method of the three-bundled-bar bundles comprises the following steps that 1, the sealing rings are mounted, the three-bundled-bar bundles 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 three-bundled-bar bundles and the connecting method of the three-bundled-bar bundles, design is reasonable, construction is convenient, safe and economic, the connecting process of the three-bundled-bar bundles 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 full grouting sleeve for three-joint tendon bundle connection and a three-joint tendon bundle 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 dense re...

AI Technical Summary

Problems solved by technology

[0010] When the prefabricated concrete structural member introduces the reinforcement method of three-joint tendon bundles due to the large number of steel bars, the connection between two prefabricated components and three-joint tendon bundles becomes a new problem in the engineering field. The traditional prefabricated The connection method of component reinforcement is aimed at a single steel bar. In the traditional cast-in-place concrete, the lap joint connection method of three parallel bars is not convenient to use in the prefabricated concrete structure, and even cannot be realized.

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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