A Vertical Collision Type Tuned Mass Damper

Abstract

A kind of vertical collision type tuned mass damper, which is used to fix on the fixed plate on the inner wall of the main structure. Two rigid limit rods are fixed vertically, and each rigid limit rod is equipped with a compression spring; the mass block There are two through holes on it, each of which is composed of a small round hole and a large round hole; the above two rigid limit rods move through the two through holes on the mass block from bottom to top, and the rigid limit rod The compression spring on the top is movably placed in the large circular hole of the through hole on the mass block, and the compression spring in the large circular hole is always under pressure during the action of the mass block. A viscoelastic material is also coated between the two rigid limit rods on the mass block; the present invention provides damping by dissipating energy through the collision between the mass block and the inner wall of the structure, and the two energy consumption mechanisms of single-sided collision and double-sided collision are automatically switched. The invention can be adapted to the excitation of wide and narrow frequency bands and different intensity levels, and the vibration control effect is obvious.

Description

Technical field [0001] The invention belongs to a vibration control device, and particularly relates to a vertical collision type tuned mass damper device. Background technique [0002] In the past thirty years, structural vibration control has developed rapidly, and many methods have emerged that can effectively control structural vibration. For example, active control methods, semi-active control methods, passive control methods and hybrid control methods, etc. Especially in large-scale structures, passive control is widely used because of its convenient installation, easy maintenance, low cost, and good effect. [0003] Passive control is divided into passive damping device and adjustable vibration absorption device. The former is widely used in oil dampers, viscous dampers, and friction dampers. Many famous bridges at home and abroad use oil dampers. It has the advantages of simple structure and easy installation. However, in many applications, it is found that this device...

AI Technical Summary

Problems solved by technology

[0006] However, the existing passive control devices are often too large in size or mass, which easily affects the function and appearance of the original structure itself, resulting in many structures that cannot be installed smoothly and generally have poor applicability

Compared with active control, the existing passive control is not efficient, and it is difficult to meet the high-level design requirements of many large structures

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