A connecting structure for inhibiting shear stress concentration on a steel bridge deck

By combining multi-layer elastic pads and limiting components, the shear stress transmission path of the steel bridge deck is optimized, the stress concentration problem at the connection points of the steel bridge deck is solved, and the stability and durability of the structure are improved.

CN224299798UActive Publication Date: 2026-05-29HEILONGJIANG ROAD & BRIDGE SURVEY & DESIGN CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HEILONGJIANG ROAD & BRIDGE SURVEY & DESIGN CO
Filing Date
2025-05-28
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

In existing technologies, shear stress concentration occurs at the connection points of steel bridge decks, leading to fatigue damage, weld cracking, and localized failure. This cannot effectively alleviate shear stress concentration, affecting service life and driving safety.

Method used

The design employs a multi-layered elastic pad, combining transition components with gradually increasing elastic modulus with limiting components to restrict horizontal displacement, optimize the shear force transmission path, and avoid stress concentration.

Benefits of technology

It effectively suppresses shear stress concentration on steel bridge decks, reduces the initiation and propagation of interface cracks, improves the overall structural stiffness, extends the maintenance cycle, and reduces operating costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of connection structures for inhibiting steel bridge deck shearing stress concentration, belong to bridge engineering technical field, for the problem that cannot well satisfy actual engineering demand, including main steel beam, deck steel plate, the deck steel plate is arranged on the main steel beam top, the main steel beam with the deck steel plate is connected through transition component, the transition component is composed of multilayer elastic pad plate, elastic modulus is sequentially increased from the main steel beam side to the deck steel plate side, and adjacent layer elastic modulus difference is greater than or equal to 15MPa, by being provided with rubber layer, carbon fiber layer, glass fiber layer, basalt fiber layer, polyurethane bonding layer cooperation, to gradually change elastic modulus design is formed, shear force transmission path from deck steel plate to main steel beam is optimized, avoid the stress concentration phenomenon caused by material stiffness mutation in traditional rigid connection, reach the effect that can well satisfy actual engineering demand.
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