A column foot anti-damage connecting structure of a new steel column on top of a concrete column

The combination of built-in cross stiffening ribs and base steel plate solves the problem of insufficient bolt center distance in small cross section column foot connections, achieving effective load transfer and construction feasibility, and enhancing connection strength.

CN224531916UActive Publication Date: 2026-07-21SHAANXI ACAD OF ARCHITECTONICS +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHAANXI ACAD OF ARCHITECTONICS
Filing Date
2025-08-07
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

In existing technologies for connecting the base of new steel columns on top of existing concrete columns, there are issues with insufficient bolt center-to-center distances in columns with small cross-sections, leading to difficulties in load transfer. Furthermore, traditional methods occupy space at the edge of the cross-section and cannot meet the requirements of the specifications.

Method used

The structure adopts a combination of built-in cross stiffening ribs and base steel plate to increase the distance between the base bolts and the edge concrete, and forms an effective force transmission path through full welding connection, combined with the connection of built-in cross stiffening ribs and square steel column.

Benefits of technology

This method enables effective connections on small-section columns, increases the bolt center distance, meets load transfer requirements, avoids occupying the edge space of the section, and ensures construction feasibility and connection strength.

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Abstract

The utility model relates to the technical field of column base joint structure design, especially to a column base anti - damage connecting structure of concrete column top new steel column, including including setting on the base plate of original concrete column, the built -in cross stiffening rib of vertical setting on the base plate, with built -in cross stiffening rib plug -in and fixed connection's square steel column. The connecting structure scientific and reasonable designed in the utility model, the mode of innovation built -in stiffening rib increases the distance of base bolt distance edge concrete, the design mode of stiffening rib and upper square steel column full -welded connection simultaneously, forms effective force transmission path, finally completes the connection requirement of old frame structure concrete column top new steel structure.
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