Section steel column base connection construction joint

By using prefabricated foundation structures and post-cast fixed structures, and employing anchor bolts and positioning nuts to achieve plug-in connections between steel columns and column bases, the problems of low installation efficiency and inconvenient transportation caused by the bending of embedded reinforcement bars are solved, thereby improving the durability of the structure.

CN224161204UActive Publication Date: 2026-04-24CHINA CONSTR SECOND ENG BUREAU LTD +1
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Patent Information

Application Number
CN202521046426.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-26
Publication Date
2026-04-24
Estimated Expiration
2035-05-26

AI Technical Summary

Technical Problem

In existing technologies, the pre-embedded reinforcing bars are prone to bending when connecting steel columns to column bases, resulting in low installation efficiency. Furthermore, the T-shape formed by the steel columns and column bases makes transportation inconvenient and affects structural durability.

Method used

The system employs a precast foundation structure and a post-cast fixing structure, using anchor bolts and positioning nuts to fix the steel columns, connecting columns, and column bases. A secondary concrete pour is then used to form a whole, achieving a plug-in connection between the steel columns and column bases.

Benefits of technology

It improves the installation efficiency of steel columns and column bases, simplifies the transportation process, and enhances the durability of the structure.

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Abstract

A section steel column base connection construction joint comprises a prefabricated foundation structure and a post-pouring fixing structure, and the prefabricated foundation structure comprises a concrete foundation, foundation bolts, positioning plates, positioning nuts and column bases; the post-pouring fixing structure comprises a connecting column, a bottom plate fixedly connected with the connecting column, a fastening nut used for fixing the bottom plate to the positioning plate, a steel column, a connecting bolt used for fixing the column foot, the steel column and the connecting column, and secondary concrete poured on the concrete foundation. The lower portions of the foundation bolts are embedded in the concrete foundation, the upper portions of the foundation bolts extend out of the concrete foundation and are provided with positioning plates in a limited mode through positioning nuts, the bottom plate and the positioning plates are fixed through fastening nuts after being overlapped, the lower portions of the column feet are embedded in the concrete foundation, the upper portions of the column feet are connected with steel columns in an inserted mode, and the side walls of the peripheries of the steel columns are inserted into the spaces between the column feet and the connecting columns. The technical problem that in the prior art, a steel column is directly connected with a foundation bolt, and the foundation bolt is prone to bending and not easy to align is solved.
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