A magnetic tmd control device

A technology of control device and magnetic force, which is applied in the direction of building types, buildings, building components, etc., can solve the problems that the stiffness is affected by magnetic force, it is difficult to apply structural engineering, and the frequency is difficult to determine.

Active Publication Date: 2021-09-14
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the stiffness is affected by the magnetic force, and the frequency is difficult to determine, so it is difficult to apply to structural engineering

Method used

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  • A magnetic tmd control device
  • A magnetic tmd control device
  • A magnetic tmd control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Such as figure 1 , figure 2 As shown, a magnetic TMD control device according to the present invention includes a mass block 1, a limiting device 2, a spring 3, a bottom plate 4, and a magnetic damping energy consumption and vibration reduction system. 4 are connected, the limit device 2 is a telescopic sleeve structure, the limit device 2 is provided with a compression spring 3; the magnetic damping energy dissipation vibration reduction system is composed of an upper permanent magnet 6 and a lower permanent magnet 8, The upper permanent magnet 6 is mounted on the bottom of the proof mass 1, and the lower permanent magnet 8 is fixedly connected to the bottom plate 4; the lower surface of the upper permanent magnet 6 is magnetically opposite to the upper surface of the lower permanent magnet 8.

[0072] The telescopic sleeve structure of the limiting device 2 is composed of a sleeve shell 2-1 and a sleeve core 2-2. The sleeve shell 2-1 is sleeved outside the sleeve c...

Embodiment 2

[0125] A kind of magnetic force TMD control device of the present invention, such as Figure 1-10 As shown, same as embodiment 1, the compression spring 3 is arranged in the sleeve shell 2-1, and the height of the support spring 3 after bearing the axial pressure is smaller than the height of the sleeve shell 2-1.

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Abstract

The invention discloses a magnetic force TMD control device. The device includes a mass block, a limit device, a spring, a bottom plate, and a magnetic damping energy dissipation and vibration reduction system. The mass block is connected to the bottom plate through a limit device, and the limit device is a telescopic sleeve structure. The device is provided with a compression spring; the magnetic damping energy dissipation vibration reduction system is composed of an upper permanent magnet and a lower permanent magnet, the upper permanent magnet is installed at the bottom of the mass block, and the lower permanent magnet is fixed to the bottom plate; the upper permanent magnet The lower surface of the permanent magnet is magnetically opposite to the upper surface of the lower permanent magnet. The advantage of the device is that it realizes the energy consumption and vibration reduction of the structure, and controls the vertical vibration of the bridge structure, and the effect is remarkable.

Description

technical field [0001] The invention relates to the technical field of structural vibration control, in particular to a magnetic TMD control device. Background technique [0002] Today, with the rapid development of the civil engineering field, a large number of lightweight and flexible structures have emerged. This type of structure has the characteristics of small mass, large span, small damping, and low natural frequency. When the pedestrian's step frequency is close to the natural frequency of the structure, it is easy to cause structural resonance and produce a large response. In light cases, it may cause pedestrian comfort problems, causing fear, dizziness and vomiting, and in severe cases, vibration may cause structural damage, building collapse and damage, and damage personal and property safety. In order to reduce the incidence of accidents and the loss of life and property, it is necessary to control the vibration of such long-span structures. Passive control is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98E04H9/02
CPCE04H9/02
Inventor 朱前坤马齐飞姜浩文崔德鹏杨文斌陈建邦孟万晨尚旭强赵严亮张希望胡剑琇曾新刘艺
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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