Eddy-current self-frequency-conversion tuned mass damper

Abstract

The invention relates to an eddy-current self-frequency-conversion tuned mass damper, which is arranged on a main structure of a building, and comprises a spring, a fixed mass block, a variable mass block, a permanent magnet bar, a servo control component and a for-regulation mass block, wherein the for-regulation mass block is fixedly arranged on the main structure; the upper end of the permanent magnet bar passes through permanent magnet bar conduits in the centers of the fixed mass block and the variable mass block in sequence respectively and is fixed through a bolt; the lower end of the permanent magnet bar stretches into an electromagnetic groove arranged in the center of the for-regulation mass block, and moreover, is arranged with a conductor plate, which is arranged in the electromagnetic groove, in a relative induction manner; the spring is arranged outside the permanent magnet bar in a sleeving manner; moreover, the upper end of the spring is connected with the fixed mass block; the lower end of the spring is connected with the for-regulation mass block; the servo control component is connected with the variable mass block and the for-regulation mass block respectively. Compared with the prior art, the eddy-current self-frequency-conversion tuned mass damper has advantages that the mass can be regulated, the energy consumption is low, the structure is simplified, an external energy source is not needed, the friction is avoided, the damping effect is good, and the like.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to an eddy current self-variable frequency tuning mass damper. Background technique [0002] In today's society, tuned mass dampers have been widely concerned because of their advantages such as small changes to the original building structure, convenient construction, and significant vibration reduction control effects, and have been used in building structures at home and abroad, such as Taipei 101 Building, Shanghai center etc. However, the traditional tuned mass damper has the disadvantage of tuning sensitivity to frequency. Not only the self-damage of the building structure will affect the vibration reduction effect of the tuned mass damper, but sometimes its own characteristics, such as the degradation of the viscous damper , the corrosion of the spring or when a certain component of the building structure is used as the mass of the tuned mass damper, the mass chang...

AI Technical Summary

Problems solved by technology

[0005] But the existing eddy current tuned mass damper is also difficult to adjust its own frequency

Once the frequency deviates from the structural frequency due to the reasons mentioned above, the vibration reduction effect will be greatly reduced

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