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A variable pendulum length tuned mass damper

A technology for tuning mass damping and viscous dampers, which is applied in the direction of shock absorbers, shock absorbers, solid shock absorbers, etc., can solve the problems of high cost and large quantity, and achieve the effect of wide application range

Active Publication Date: 2016-07-27
TONGJI UNIV ARCHITECTURAL DESIGN INST GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For high-rise buildings, the quantity is huge and the cost is very expensive

Method used

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  • A variable pendulum length tuned mass damper
  • A variable pendulum length tuned mass damper
  • A variable pendulum length tuned mass damper

Examples

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Embodiment

[0020] A variable pendulum length tuned mass damper, its structure is as follows Figure 1-3 As shown, it includes a mass block 1, a viscous damper 2, a sling 3, and a two-layer frame composed of a screw 7 and a splint 9, etc. The long and narrow holes 10 in the middle of the two splints 9 are perpendicular to each other, so as to achieve the purpose of adjusting the pendulum lengths in the two horizontal directions respectively. According to design requirements, the magnitude of the frequency in two directions pre-determines the upper and lower positions of the two splints 9 . A groove for placing the hemispherical hinge 6 and a trumpet-shaped hole are reserved at the lifting point of the main structure 4 in advance, and the angle of the hole should be greater than 30°. During installation, the sling 3 passes through the hole in the middle of the horn-shaped hole and the hemispherical hinge 6, and the top is fixed by the lifting point bolt 5. After installing and fixing the...

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Abstract

The invention relates to a variable pendulum-length tuning mass damper, which includes a mass block, a viscous damper, a sling, and a main structure. The viscous damper is connected to the side of the mass block, and the mass block is connected to the main structure through a sling. On the top, the two-layer plywood arranged in parallel below the main structure is movably connected with the main structure through screws and bolts, and the sling is passed through the narrow and long hole opened in the center of the plywood. Compared with the prior art, the height of the splint in the present invention can be changed on the screw rod, thereby adjusting different pendulum lengths in two horizontal directions, so as to adapt to the characteristics of different frequencies in the horizontal direction of the main structure. The holes are perpendicular to each other, ensuring that the sling passing through can swing in one direction, and form an inflection point in the other direction. During use, when the periodic characteristics of the main structure change, the variable pendulum-length tuned mass damper can still tune the period of the main body by changing the pendulum length, so as to achieve the purpose of reducing vibration.

Description

technical field [0001] The invention relates to a damper, in particular to a variable pendulum-length tuned mass damper. Background technique [0002] In recent years, the tuned mass damper (TMD) has received extensive attention due to its small changes to the original structure, simple construction, and remarkable vibration reduction effect, and has been applied in civil engineering structures at home and abroad. The control of horizontal vibration can be realized by adopting suspended mass blocks. The frequency of the traditional suspended tuned mass damper is the same in all horizontal directions, but the actual structure often has different periodic characteristics in the two horizontal directions. Furthermore, the periodic characteristics of the main structure in the design stage are often quite different from those after completion, and the periodic characteristics of the main structure will also change due to time effects or damage during use. Therefore, it is neces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/30F16F9/32
Inventor 李晓玮施卫星虞终军阮永辉
Owner TONGJI UNIV ARCHITECTURAL DESIGN INST GRP CO LTD