A steel composite bridge

The design of H-shaped steel composite bridges eliminates the need for stiffening structures, simplifies the processing process, reduces costs, and improves construction efficiency, thus solving the problem of high costs of steel structure bridges. It is suitable for standard span highway bridges.

CN115584679BActive Publication Date: 2025-09-09SICHUAN HIGHWAY PLANNING SURVEY DESIGN AND RESEARCH INSTITUTE LTD
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Patent Information

Application Number
CN202211303349.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-10-24
Publication Date
2025-09-09
Estimated Expiration
2042-10-24

AI Technical Summary

Technical Problem

Due to the large variety and quantity of stiffening structures in steel structure bridges, the processing process is cumbersome and the labor cost is high, resulting in excessively high project costs, which limits their large-scale promotion and application.

Method used

By using several H-shaped steels arranged side by side, connecting the end beams and pouring concrete, an integrated structure is formed, eliminating the need for stiffening structures. The strong rigidity of the corrugated steel plates is used to form a strong combined structure, reducing the stress on the main beam, simplifying the processing process and reducing the cost.

Benefits of technology

By simplifying the processing process, reducing the cost of steel main beams, improving construction efficiency, and reducing carbon emissions, it is suitable for standard span highway bridges and has broad market promotion prospects.

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Abstract

The present invention provides a composite steel bridge comprising a plurality of H-shaped steels arranged side by side, with the spacing between two transversely adjacent H-shaped steels being less than the wheelbase of a highway vehicle load in the transverse direction of the bridge. End crossbeams are provided at the ends of the H-shaped steels, each end of which connects two transversely adjacent H-shaped steels. The end crossbeams comprise a steel box, in which a first concrete is cast. The steel box comprises a web and a base plate, the web being a corrugated plate with the corrugations extending in the vertical direction. No stiffening structure is provided between two longitudinally adjacent end crossbeams of the same H-shaped steel. A bridge deck is provided on the H-shaped steel, comprising a plurality of deck bottom plates, each of which is connected to two adjacent H-shaped steels on both sides. The deck bottom plates are corrugated plates with the corrugations extending in the longitudinal direction of the bridge, and are cast with a second concrete. No stiffening structure is required for the main beam, effectively reducing construction costs.
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