A connecting structure and method of a concrete-filled steel tube column and a steel reinforced concrete transfer beam

By using vertical steel bars and core column reinforcement in the connection between the steel-concrete composite column and the steel-concrete composite transfer beam, and welding them to form a force-transmitting component, the problems of discontinuous longitudinal reinforcement and low construction efficiency in the existing technology are solved, and an efficient and optimized connection structure is achieved.

CN116716994BActive Publication Date: 2026-06-19ARCHITECTURAL DESIGN & RES INST OF SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ARCHITECTURAL DESIGN & RES INST OF SOUTH CHINA UNIV OF TECH
Filing Date
2023-07-03
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

The existing connection structure between steel-concrete composite columns and steel-concrete composite transfer beams suffers from discontinuous longitudinal reinforcement due to the circular steel pipe columns extending into the transfer beams, resulting in unfavorable stress distribution and low construction efficiency.

Method used

Vertical steel bars and core column inserts are used to interweave the longitudinal reinforcement of the beam, which are then welded to form the first force transmission component. Closed stirrups and tie bars are used to form the second force transmission component, reducing on-site welding operations and optimizing the connection structure.

Benefits of technology

It improves the stress performance and construction efficiency of the connection structure, reduces the cross-sectional size of the transfer beam, and enhances the force transmission performance between the beam and the column.

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Abstract

This invention discloses a connection structure and method for a steel-concrete composite column and a steel-concrete composite transfer beam. The connection structure includes a steel-concrete composite column, an inner-lined circular steel pipe, a steel-concrete composite transfer beam, vertical steel bars, core column reinforcing bars, stirrups, and tie bars. The steel pipe of the steel-concrete composite column does not extend into the steel-concrete composite beam. An inner-lined steel pipe is installed at the top of the steel pipe to improve local bearing capacity. Multiple vertical steel bars and core column reinforcing bars are inserted into the steel pipe of the steel-concrete composite column, extending upwards into the transfer beam. When some vertical steel bars overlap with the steel beam, slotted welding is used to form the first force transmission component. Other vertical steel bars and core column reinforcing bars are formed by closed stirrups and tie bars to form the core column as the second force transmission component. The vertical steel bars and core column reinforcing bars can effectively transmit axial force, bending moment, and shear force at the joint. The longitudinal reinforcement of the transfer beam of this invention continuously and freely penetrates the column, ensuring effective anchorage of the longitudinal reinforcement and steel section of the transfer beam, resulting in excellent force transmission and ease of construction.
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