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Self-resetting piezoelectric friction damper

A friction damper and self-resetting technology, which is applied in the direction of building types, buildings, building components, etc., can solve the problems that the friction damper cannot adjust the damping force in real time, the structure cannot continue to be used, and it is difficult to repair, so as to reduce residual deformation and structure Simple and easy processing effect

Active Publication Date: 2021-05-07
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The friction damper currently used cannot adjust the damping force in real time according to the response of the structure, and there will be a large residual deformation after the earthquake, which makes the structure unusable after the earthquake and difficult to repair

Method used

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  • Self-resetting piezoelectric friction damper

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Embodiment Construction

[0034] The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention.

[0036] The pres...

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Abstract

The invention relates to a self-resetting piezoelectric friction damper, which belongs to the technical fields of vibration response control of civil engineering structures and earthquake resistance and disaster reduction; it includes a left side baffle, a right side baffle, an auxiliary plate, an outer friction plate, a movable main plate, an inner friction plate, Annular piezoelectric ceramic driver, spring and actuating rod; the friction force between the movable main board and the inner friction plate and outer friction plate is adjusted through the axial expansion and contraction of the annular piezoelectric ceramic driver; the self-resetting of the structure is realized by the spring 16 , to reduce the residual deformation of the structure after the earthquake. The utility model has the advantages of simple structure, low cost and convenient processing. The present invention changes the passive control of the traditional friction damper into adaptive control, can adjust the working voltage of the piezoelectric ceramic driver 8 in real time according to the response of the building structure, and change the axial deformation of the piezoelectric ceramic, resulting in positive pressure on the friction plate and the movable main board 4 change, thereby changing the magnitude of the friction force. The shock absorption effect is stable, achieving the effect of intelligent control.

Description

technical field [0001] The invention belongs to the technical field of vibration response control of civil engineering structures and earthquake resistance and disaster reduction, and in particular relates to a self-resetting piezoelectric friction damper, which can reduce the structural response of a building structure under the action of wind loads, earthquakes and other dynamic loads, and play a role in energy consumption. Vibration reduction and self-reset function. Background technique [0002] With the development of urban construction, there are more and more high-rise and super high-rise buildings. At present, in the field of high-rise buildings, especially super high-rise buildings, how to improve the seismic and wind resistance of building structures and effectively reduce the high cost of structures has become the focus of domestic and foreign academic circles. Therefore, under vibration excitation (including earthquake and wind vibration), it is necessary to con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98E04H9/02
CPCE04B1/98E04H9/021
Inventor 张洵安李坤刘建雄肖彦杰
Owner NORTHWESTERN POLYTECHNICAL UNIV
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