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Self-resetting piezoelectric friction damper

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

Active Publication Date: 2020-06-09
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 by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0035] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the 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 limiting the invention.

[0036] A self-resetting piezoelectric fricti...

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Abstract

The invention belongs to the technical field of civil engineering structure vibration response control and earthquake resistance and hazard mitigation and relates to a self-resetting piezoelectric friction damper. The self-resetting piezoelectric friction damper comprises a left baffle, a right baffle, an auxiliary plate, an outer friction plate, a movable main plate, an inner friction plate, an annular piezoelectric ceramic driver, a spring and an actuating rod. The friction force between the movable main plate and the inner friction plate and the friction force between the movable main plateand the outer friction plate are adjusted through axial extending and contracting adjustment of the annular piezoelectric ceramic driver; self-resetting of the structure is achieved through the spring 16, and residual deformation of the structure after the earthquake is reduced. The self-resetting piezoelectric friction damper is simple in structure, low in manufacturing cost and convenient to machine; the passive control of a traditional friction damper is changed to be adaptive control, the working voltage of the piezoelectric ceramic driver 8 can be adjusted in real time according to the response of the building structure, the axial deformation amount of the piezoelectric ceramic is changed, the positive pressure of the friction plates and the movable main plate 4 is changed, and therefore the friction force is changed; and the damping effect is stable, and the effect of intelligent control is achieved.

Description

technical field [0001] The invention belongs to the technical fields of vibration response control of civil engineering structures and earthquake resistance and disaster reduction, and specifically relates to a self-resetting piezoelectric friction damper, which can reduce the structural response of building structures under dynamic loads such as wind loads and earthquakes, and play a role in energy consumption. Vibration reduction and self-resetting 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 earthquake resistance 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...

Claims

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Application Information

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Patent Type & Authority Applications(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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