Spherical surface TMD shock absorption control device

Abstract

The invention provides a spherical surface TMD (Turning Mass Damper) shock absorption control device, which comprises a bottom plate component and a mass block component glidingly matched with the bottom plate component, wherein the weight of the mass block component is m; the top of the bottom plate component is provided with N concave spherical surfaces; the bottom of the mass block component is provided with N convex spherical surfaces glidingly matched with the concave spherical surfaces; the concave spherical surfaces and the convex spherical surfaces have the identical spherical surface radius R; a sliding friction pair is arranged between the convex spherical surfaces and the concave spherical surfaces; and a damping device is arranged between the mass block component and the bottom plate component. The spherical surface TMD shock absorption control device has the advantages that the additional damping can be increased through setting different friction factors; meanwhile, through a single pendulum simple harmonic moving principle, an elastic element of a traditional TMD is replaced; the design is scientific; the structure is compact; the operation and the use are convenient; the problems that for the existing TMD technology, the manufacturing cost is high, a greater installation space is needed, a structural element can be easily damaged, and the like can be solved; and the spherical surface TMD shock absorption control device is particularly applicable to the control of low-frequency vibration of a structure.

Description

technical field [0001] The invention relates to a vibration reduction and isolation control device for a bridge, in particular to a vibration reduction control device for a spherical tuned mass damper. Background technique [0002] With the development of civil engineering, the height-to-width ratio of high-rise building structures is increasing, and the span of bridge structures is also increasing. As a result, the structure is relatively softer and the natural vibration frequency of the structure is decreasing. Under the influence of strong winds, earthquakes, vehicle dynamics, crowds, etc., the structure is likely to cause vibration or shaking. It is unreasonable to rely on traditional methods of increasing structural stiffness from an economic and aesthetic point of view. The bearing capacity can meet the requirements, but the vibration of the structure will cause some parts of the structure, fatigue damage or even fracture of the weld, causing safety hazards; in additio...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a spherical tuned mass damper vibration reduction control for the existing TMD technology in the structure low-frequency vibration control problems such as high production cost, large space for installation, and easy damage to structural parts. device, to overcome the deficiencies in the above-mentioned prior art

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