A prefabricated steel joint construction for frame connection and a construction method thereof

By constructing prefabricated steel nodes to centralize the connection between columns and beams, the connection complexity of steel-concrete composite frame structures is simplified, space occupation and processing difficulty are reduced, transportation efficiency is improved, and it is suitable for small-sized steel pipe sections, thus realizing efficient prefabricated construction.

CN122106175APending Publication Date: 2026-05-29CHINA RAILWAY URBAN CONSTR GRP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA RAILWAY URBAN CONSTR GRP
Filing Date
2026-01-23
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

In existing prefabricated reinforced concrete frame structures, the connection between steel tube concrete columns and reinforced concrete beams is complex, and conventional rectangular steel tube columns require the welding of transverse diaphragms, resulting in inconvenient construction and large space occupation, making it difficult to apply to small-sized steel tube sections.

Method used

The prefabricated steel node structure is adopted, and the connection between the outer steel sleeve and the columns and beams is centralized to reduce protruding plates, simplify the structure and reduce space occupation. The bolted and welded composite connection method is adopted to ensure convenient processing and transportation.

Benefits of technology

It simplifies the connection between beam and column members, reduces structural complexity and space occupation, improves processing and transportation efficiency, is suitable for small-sized steel pipe sections, is compatible with multiple connection methods, and has strong scalability.

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Abstract

The application discloses a prefabricated steel joint structure for frame connection and a construction method and device, which are arranged between a stand column and a cross beam and comprise an outer steel sleeve, the outer steel sleeve is arranged between two upper and lower stand columns to realize the connection of the upper and lower stand columns, a pair of cross partitions are arranged at the bottom end of the outer steel sleeve, a gap is reserved between the two cross partitions to serve as a grouting hole, the outer steel sleeve is fixedly connected with the top end of the stand column through the cross partitions, the outer steel sleeve is a hollow straight cylinder structure with a rectangular cross section, outer top plates and web bolt connecting plates are arranged on the outer side of the outer steel sleeve, the outer top plates and the web bolt connecting plates are fixedly connected with the end of the cross beam to realize the connection of the cross beam. The column-column and beam-column connection positions are concentrated, the protruding plate parts are completely concentrated on the prefabricated joint, the construction complexity and space occupation of the beam component and the column component main body are greatly reduced, a large number of protruding plate parts are avoided to be welded, and the problems of inconvenient production, complex modeling, large space occupation and low transportation efficiency are solved.
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