Steel structure connecting joint with damping energy dissipation mechanism

By designing variable damping channels and cooling circulation systems in the steel structure connection nodes, the problem of fixed energy dissipation capacity of viscous dampers was solved, realizing dynamic matching and efficient energy dissipation of dampers under different vibration loads, thereby improving the seismic performance and service life of steel structures.

CN122129089AActive Publication Date: 2026-06-02CHINA NEW ERA INT ENG CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA NEW ERA INT ENG CORP
Filing Date
2026-04-28
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

In practical applications, the key characteristics of existing viscous dampers, such as the viscosity of the internal damping medium and the mechanical parameters of the force transmission components, remain constant after manufacturing. This results in a fixed energy dissipation capacity, making it difficult to adapt to complex and variable vibration loads. Consequently, they cannot be effectively matched under different vibration intensities, limiting their application value in steel structure connection nodes.

Method used

A steel structure connection node with a damping energy dissipation mechanism was designed. By setting an adjusting rod and a flow groove in the cylinder to form a variable damping flow channel, combined with a spiral structure and a cooling circulation flow path, the length of the damping flow channel can be dynamically adjusted according to the vibration load, thereby enhancing the energy dissipation adaptability. Furthermore, the frictional heat is reduced through the cooling medium and heat dissipation system, thereby improving the stability and efficiency of the damping medium.

Benefits of technology

This achieves dynamic matching between the damping channel length and the vibration load, improves the applicability and energy efficiency of the damper, avoids heat accumulation, extends the service life of the damping medium, and enhances the seismic performance of the steel structure connection nodes.

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Abstract

This invention relates to the field of building engineering technology, specifically to a steel structure connection node with a damping energy dissipation mechanism. The damping energy dissipation mechanism includes a cylinder, inside which a first piston is inserted. A guide rod is fixedly mounted on the first piston, coaxially arranged with the cylinder and slidingly passing through it. At least one adjusting rod is also inserted inside the cylinder, parallel to the guide rod, and has a flow groove on its side wall. The flow groove consists of a middle section located in the middle of the adjusting rod and two adjusting sections located at both ends of the adjusting rod. A first through hole is formed on the first piston, through which the first piston is slidably fitted onto the adjusting rod. The side wall of the first through hole and the flow groove together form a damping flow channel. When the middle section aligns with the side wall of the first through hole, the length of the damping flow channel remains constant. When the adjusting sections align with the side wall of the first through hole, the length of the damping flow channel gradually increases from the middle to the end of the adjusting rod. This allows for adjustment of the damping capacity according to the vibration load.
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