A large-span bridge left and right whole splicing structure

By adopting a structural design in long-span bridges that incorporates an integrally layered upper flange plate, a direct joint section, and a composite lower flange plate, combined with ultra-high performance concrete and steel reinforcement, the problem of insufficient structural stress performance and durability in long-span bridge splicing has been solved, and the synergistic stress and durability of the bridge have been improved.

CN224451428UActive Publication Date: 2026-07-03GUANGDONG EXPRESSWAY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG EXPRESSWAY CO LTD
Filing Date
2025-07-16
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing technologies for splicing long-span bridges suffer from structural stress performance defects, insufficient durability, and construction limitations. In particular, the flange plate rebar installation method is difficult to achieve effective connection and is prone to damaging the transverse prestressed structure.

Method used

The bridge adopts a three-part structural design, consisting of an integrally laminated section at the upper edge of the flange, a direct-connection section at the joint, and a laminated section at the lower edge of the flange. It uses ultra-high performance concrete for segmented or one-time casting and achieves coordinated stress distribution between the left and right spans of the bridge through steel reinforcement, thus avoiding damage to the transverse prestressed steel strands.

Benefits of technology

It improves the load-bearing performance of the bridge structure, enhances driving comfort, and strengthens durability, while avoiding the risk of stress concentration and damage to the transverse prestressed steel strands.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a kind of left-right amplitude integration splicing structure of long-span bridge, comprising: flange plate upper edge integration laminated section, joint direct connection section, flange plate lower edge laminated section, integration laminated section reinforcement structure, joint direct connection section reinforcement structure, flange plate lower edge laminated section reinforcement structure;Integration laminated section reinforcement structure is located in the inside of flange plate upper edge integration laminated section, joint direct connection section reinforcement structure is located in the inside of joint direct connection section, flange plate lower edge laminated section reinforcement structure is located in the inside of flange plate upper edge integration laminated section, joint direct connection section, flange plate lower edge laminated section;Integration laminated section reinforcement structure, joint direct connection section reinforcement structure, flange plate lower edge laminated section reinforcement structure are connected with old bridge flange plate, old bridge flange plate transverse reinforcement, old bridge flange plate longitudinal reinforcement.Compared with prior art, the utility model has the advantages of improving structural stress performance, improving driving comfort, enhancing durability, etc.
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Citation Information

Patent Citations

  • Transverse splicing structure of concrete continuous box girder bridges and construction method for transverse splicing structure

    CN107386134A

  • A bridge widening structure and construction method to meet the settlement difference between old and new bridges

    CN109024320B

  • Width-splicing bridge connecting device

    CN222477253U