Main bar connection device of fabricated steel-mixed construction part

Abstract

The invention discloses a main bar connecting device of a fabricated steel-mixed construction part. The main bar connecting device includes an outer sleeve and two inner sleeves, wherein the two inner sleeves sleeve the upper end and the lower end of the outer sleeve respectively; two or more outer convex blocks are arranged on the outer wall of each inner sleeve; two or more rows of inner clamping parts are arranged on the inner wall of the outer sleeve at intervals in the axial direction, and each row of the inner clamping parts are composed of two or more inner convex blocks arranged at intervals; when the outer convex blocks of the two inner sleeves are placed between two rows of the inner convex blocks, the two inner sleeves can slide in the axial direction of the outer sleeve; and when the outer convex blocks of the two inner sleeves are respectively or simultaneously clamped between the two adjacent inner convex blocks in each row, the outer part of the clamping space of the inner convex blocks and the outer convex blocks forms an arc-shaped through groove, the arc-shaped through groove is internally provided with an arc-shaped clamping part matched closely with the arc-shaped through groove, so that the outer sleeve and the two inner sleeves are in the locking state. The main bar connecting device of the fabricated steel-mixed construction part is good in seismic performance, high in connection strength, and convenient to construct.

Description

technical field [0001] The invention relates to an assembled building connection component, in particular to a main reinforcement connection device for an assembled steel-concrete structure. Background technique [0002] In prefabricated buildings, there are a large number of node connections and joint connections, and the connection of steel bars is undoubtedly the most widely used and most important key technology. At present, the most widely used steel bar connection structure is the grouting sleeve connection. When the grouting sleeve is used to connect the upper and lower steel bars, the upper and lower corresponding steel bars are inserted into the butt joint sleeve, and then the grouting machine is inserted into the sleeve. Inject the non-shrinkage high-strength grouting material composed of cement, expansion agent, fine aggregate and high-performance admixture. When the grouting material hardens, the steel bar and the sleeve are firmly connected into one. The follow...

AI Technical Summary

Problems solved by technology

The following problems exist in the connection of this method: the construction process has high requirements for the construction workers, and at the same time, the quality of the grouting material seriously affects the connection effect of the upper and lower steel bars

Although this technical solution is easy to operate and the strength of the connection structure is guaranteed, the use of welded connections is not applicable to building structures in earthquake areas, and it is difficult to ensure that the vertical main reinforcement maintains a good working condition in earthquake areas

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