Suspended frequency modulation mass damper

A frequency modulation mass damping and suspension technology, which is applied to building components, shockproof, etc., can solve the problems that the adverse effects of the damper cannot be completely eliminated, the frequency cannot be adjusted, and the energy consumption capacity is poor, so as to improve the actual control effect and occupy a large volume Small, the effect of improving energy consumption capacity

Inactive Publication Date: 2010-08-18
SOUTHEAST UNIV
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Problems solved by technology

However, these studies and applications mainly focus on the use of frequency-modulated mass dampers to control the horizontal vibration of structures under the action of earthquakes and winds, and there are few studies and applications on the control of vertical vibrations of structures; and the applied frequency-modulated mass dampers are all passive devices , not adjustable, unable to adjust its own frequency, poor energy dissipation capacity, and unable to completely eliminate the adverse effects of internal friction in the damper

Method used

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  • Suspended frequency modulation mass damper
  • Suspended frequency modulation mass damper
  • Suspended frequency modulation mass damper

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Embodiment Construction

[0018] The technical solution of the present invention will be described in detail below by means of embodiments in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0019] Such as Figure 1~3 As shown, a suspended frequency modulation mass damper includes a spring 1, a mass block 2 and a viscous fluid damper 3, and the mass block 2 is suspended on the upper suspension beam or On the top plate 4, the viscous fluid damper 3 is mainly composed of a sealed cylinder 7, a guide rod 8 that can slide up and down through the cylinder 7, and a piston 9 fixed on the guide rod 8. The piston 9 A damping channel 11 with a constant radius is provided on the upper surface, and the damping rod 10 is arranged in the cylinder 7 and passes through the damping channel 11 on the piston 9. When the piston 9 moves to different displacements, the corresponding damping The radii of the long rods 10 are not equal, so that...

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Abstract

The invention discloses a suspended frequency modulation mass damper, comprising a spring, a mass block and a viscous fluid damper; the mass block is suspended on an upper suspension girder or roof plate through the spring and the viscous fluid damper; the viscous fluid damper mainly comprises a sealed cylinder, a guide rod passing through the cylinder and capable of sliding up and down and a piston fixed on the guide rod; and the damping coefficient of the viscous fluid damper is changed along with the change of the displacement of the viscous fluid damper. The device capable of controlling vertical vibration has simple structure, small occupying area and high space utilization ratio.

Description

technical field [0001] The invention relates to a vibration damping device for vertical vibration response of long-span bridges and buildings (roofs), in particular to a suspended mass damper. Background technique [0002] With the needs of economic and urban construction development, the span and scale of buildings and bridges are getting larger and larger, of which sports, conference and exhibition and airport buildings and long-span bridges are representative. In recent years, great changes have taken place in architectural design and construction technology. The advancement of calculation methods and the use of lightweight and high-strength materials have made the structural system lighter, softer, and less damped. The design trend is to use the structural system with the smallest weight. Spanning a long span reduces the stiffness and damping of the structure, making the natural vibration frequency of long-span bridges and buildings (roofs) relatively close to the freque...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98
Inventor 张志强李爱群刘康安
Owner SOUTHEAST UNIV
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