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Speed regulation type tuning mass damper

A technology for tuning mass damping and dampers, which is applied in the direction of shock absorbers, shock absorbers, and vibration suppression adjustments, can solve problems such as poor control effects and slow TMD startup, and achieve low cost, simple principles and algorithms, and good theory Effects of research and application value

Inactive Publication Date: 2007-09-12
BEIJING UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0007] Existing TMD has the problems of slow startup and poor control effect in the case of frequency misalignment

Method used

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  • Speed regulation type tuning mass damper
  • Speed regulation type tuning mass damper
  • Speed regulation type tuning mass damper

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Embodiment Construction

[0034] The implementation method of the present invention will be further described below in conjunction with the accompanying drawings:

[0035]In order to verify the control effect of the speed-regulating TMD proposed by the present invention, the control effect of the speed-regulating TMD and passive TMD is analyzed and compared by taking the seismic response control of a single-degree-of-freedom structure as an example. The parameters of the structure and TMD are selected as follows: the structural mass is 430ton, the structural stiffness is 60300KN / m, the structural period is 0.53s, and the structural damping ratio is 0.02; the TMD mass is 4.3ton, the TMD spring stiffness is 603KN / m, and the TMD damping ratio is 0.1 . The ratio of TMD mass to structure mass is 0.01, and the frequency ratio is set to 1. Assume that the maximum speed increment that the device can provide each time the speed is adjusted is 1m / s. For a TMD of 4.3 tons, the required impulse is 4.3KN s. The d...

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Abstract

Speed-regulated amortisseur for turning quality belongs to field of antiknock and reducing cataclysm. The existing TMD has problems of slow enabling and bad controlling effects under frequency disturbance. Its technical route is: TMD can attain the needed motion amplitude quickly by giving impulse to its quality block, which can improve its controlling effect for percussion load. Magnetic rheostat can be used to lock functions of TMD and major structure, adjust displacement relation of TMD and structure and reduce depression of controlling effect caused by frequency disturbance. The controlling effect of the invention acted by percussion load under the condition of reduce depression is batter than that of traditional passive TMD. It has on energy problem resolved difficultly by active control while great shaking. The invention is easy to realize and has low cost.

Description

technical field [0001] The invention relates to a speed-regulating type tuned mass damper, which is mainly used in the field of earthquake resistance and disaster reduction of towering structures, bridge towers and the like. Background technique [0002] Since the American scholar Yao proposed the concept of structural control in 1972, the research on structural vibration control has developed rapidly. Among many control devices, the tuned mass damper (Tuned Mass Damper, TMD) does not need to modify the structural design during installation, and generally can It is directly installed on the top floor of the structure, because it is flexible, convenient, low cost and widely used. [0003] At present, theoretical and experimental studies generally believe that TMD can effectively reduce the wind vibration of tall structures, but many studies have shown that the control effect of TMD on shock loads such as earthquakes is very limited. The main reasons are as follows: (1) Shock...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98
CPCF16F9/535F16F15/022
Inventor 秦丽周锡元闫维明
Owner BEIJING UNIV OF TECH
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