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Viscoelastic damper with adjustable compressive pre-stress

A technology of pre-compression stress and viscoelasticity, applied in the field of structural shock absorption, can solve the problems of low storage stiffness and high production cost, and achieve the effects of excellent energy consumption, controllable parameters, and reduced deployment costs.

Pending Publication Date: 2022-04-05
NANJING FORESTRY UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the technical problems of high production cost and low storage stiffness of the above-mentioned common viscoelastic damper, the present invention provides a widely applicable and excellent performance viscoelastic damper with adjustable precompression stress

Method used

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  • Viscoelastic damper with adjustable compressive pre-stress
  • Viscoelastic damper with adjustable compressive pre-stress
  • Viscoelastic damper with adjustable compressive pre-stress

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] Such as figure 1 , figure 2 As shown, a viscoelastic damper with adjustable precompressive stress is mainly composed of a restraint unit, an energy dissipation unit and a connection unit. The restraint unit is composed of an upper restraint steel plate, a lower restraint steel plate and a middle steel plate. Composed of two identical viscoelastic bodies, the connecting unit is placed between the upper constraining steel plate and the lower constraining plate, and is connected to the upper and lower constraining plates through fixing screws and nuts. A backing plate is placed between the two, and the thickness of the backing plate is The thickness of the viscoelastic body is the same as that of the viscoelastic body. The connecting unit is ...

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Abstract

The invention discloses a viscoelastic damper with adjustable compressive pre-stress, and belongs to the technical field of structural damping. The main body comprises a constraint unit, an energy consumption unit and a connecting unit. The energy consumption unit is made of hydrogel / porous metal composite materials, impedance force with hysteretic characteristics is generated through shear deformation to absorb vibration, and the effect is remarkable. The elastic degree of the belleville spring is controlled through the adjusting bolt to provide different pre-tightening forces, so that the energy dissipation and shock absorption effects of the viscoelastic damper are changed, structural vibration caused by earthquakes and wind vibration can be remarkably reduced, and the viscoelastic damper is more economical. The device is good in damping effect, simple in structure, convenient to install, easy to replace under a large earthquake and suitable for various applications from new building to existing building renovation, and high quality and low cost can be achieved through large-scale production of high-quality industrial products and standardized systems.

Description

technical field [0001] The invention relates to the field of structure damping in civil engineering, in particular to a viscoelastic damper with adjustable precompression stress. Background technique [0002] Earthquake is one of the main natural disasters that threaten the safety of major engineering structures. Therefore, structural shock absorption control has become an effective measure for disaster prevention and mitigation in civil engineering. [0003] With the development of my country's economy and the increasing innovation of various industries, the technology of structural earthquake prevention and disaster reduction has developed rapidly. The development of semi-active and intelligent control technology, among which the application of passive energy dissipation and shock absorption theory and technology has been widely studied and applied in the world because of its strong energy dissipation and shock absorption function, stable performance, and high cost performa...

Claims

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Application Information

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IPC IPC(8): E04B1/98E04H9/02
Inventor 苏毅陈玉莹李念帅俞杰
Owner NANJING FORESTRY UNIV
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