Eddy current damping three-dimensional shock absorption device utilizing bridge saddle weight

Abstract

The invention discloses an eddy current damping three-dimensional shock absorption device utilizing a bridge saddle weight, and relates to the technical field of bridge structure shock absorption control in civil engineering, the eddy current damping three-dimensional shock absorption device comprises a base plate, the center position of the upper surface of the base plate is a plane, and the base plate extends outwards through a plurality of sequentially spliced cambered surfaces from the plane; the curvature radiuses of the plurality of cambered surfaces are sequentially reduced from inside to outside, and first conductor plates are arranged on the plane and the cambered surfaces; a second conductor plate is arranged on the inner wall of the outer cylinder, a plurality of first electromagnets and universal rotating bodies are arranged at the bottom of the outer cylinder, and the universal rotating bodies make contact with the upper surface of the base plate; and the saddle weight is arranged in the outer cylinder, the top end and the bottom end of the saddle weight are fixedly connected with the top wall and the bottom wall of the outer cylinder through vertical springs correspondingly, and a plurality of second electromagnets are arranged on the outer side wall of the saddle weight at intervals. Eddy current damping vertical tuning damping and eddy current damping multi-stage frequency conversion horizontal tuning damping can be achieved.

Description

technical field [0001] The invention relates to the technical field of damping control of bridge structures in civil engineering, and more particularly to a three-dimensional damping device for eddy current damping using bridge weights. Background technique [0002] With the modernization of infrastructure, long-span bridges are the key hubs of transportation projects, and their safe operation under the action of vehicle loads, wave loads and other operating loads and extreme disasters such as earthquakes and strong typhoons is important for ensuring post-disaster rescue work. It's critical to go smoothly. Structural damping control technology, as an important technical means for earthquake prevention and disaster reduction, has been widely used in long-span bridges. Commonly used tuning damping devices such as mass tuning dampers, liquid tuning dampers, active tuning mass dampers, etc., the principle It uses the external mass, stiffness and damping to form a resonance syst...

AI Technical Summary

Problems solved by technology

However, the ballast blocks installed on the side spans of long-span bridges have single functions and low mass utilization efficiency. Although they can be used for vertical vibration reduction, they have a single tuning frequency and direction, and low damping and vibration reduction efficiency. Poor applicability for operating loads such as wave loads and extreme disasters such as earthquakes and typhoons

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