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Damper with structure limiting shear deformation of viscoelastic material

A technology of shear deformation and viscoelasticity, which is applied to building components, building structures, and earthquake resistance, and can solve problems such as the degradation of energy dissipation capacity of viscoelastic materials, and achieve the effect of simple structure and strong energy dissipation capacity

Active Publication Date: 2017-12-12
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: how to limit the excessive shear deformation of the viscoelastic material and cause the degradation of the energy dissipation capacity of the viscoelastic material when there is a large vibration at the structure

Method used

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  • Damper with structure limiting shear deformation of viscoelastic material

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Effect test

Embodiment 1

[0019] Such as figure 1 A damper with a structure that limits the shear deformation of viscoelastic materials is shown, including two upper and lower outer steel plates 1, a middle plate 2 and a viscoelastic material layer, and the viscoelastic material layer is arranged on the two outer steel plates 1 Between them, the middle plate 2 is installed at the position of the middle layer of the viscoelastic material layer, and the viscoelastic material layer includes a first viscoelastic material layer 3 symmetrically arranged on the left side of the two outer steel plates and a second elastic material layer 4 on the right side , The middle of the two outer steel plates 1 is provided with a U-shaped part that expands outwards, and the U-shaped part has a certain elasticity and can be stretched left and right. By limiting the shear deformation of the viscoelastic material, the U-shaped part keeps the viscoelastic material at a small strain amplitude, so that the viscoelastic materia...

Embodiment 2

[0023] During the experiment, the applicant found that the main characteristics of the viscoelastic material layer are related to temperature. When the temperature is low to a certain extent, the viscoelastic material is in glass state and loses its damping properties; at high temperature, it is in rubber state and its damping is also very good. Small; only at medium frequency and medium temperature, the damping is the largest and the damping effect is the best. Therefore, the applicant has a system that can adjust the temperature on the basis of the angular displacement composite damping device. The system includes a temperature sensor, a control device and a temperature sensor. The regulating device (not shown), the control device is connected with the detection device and the temperature regulating device, the temperature regulating device is installed on the outer steel plate, the temperature detecting device detects the temperature of the viscoelastic material layer and tra...

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Abstract

The invention provides a damper with a structure capable of restricting the shear deformation of a viscous-elastic material. The damper comprises an upper outer layer steel plate, a lower outer layer steel plate, a middle plate member and a viscous-elastic material layer. The viscous-elastic material layer is arranged between the two outer layer steel plates; the middle plate member is installed at the middle layer position of the viscous-elastic material layer. The damper is characterized in that the viscous-elastic material layer comprises a first viscous-elastic material layer and a second elastic material layer which are arranged on the left side and the right side of the two outer layer steel plates symmetrically; the middle portions of the two outer layer steel plates are provided with outward-extending U-shaped parts. The damper is simple in structure; the U-shaped parts make the viscous-elastic material have a smaller strain amplitude value consistently by restricting the shear deformation of the viscous-elastic material, so that the viscous-elastic material is in a state of having favorable energy-dissipating capability; the U-shaped parts also have a function of energy dissipation assisting, so that the structure has greater energy-dissipating capability.

Description

technical field [0001] The invention relates to the field of anti-seismic devices for civil engineering structures, in particular to a damper which combines a viscoelastic damper and a metal damper and has a structure for limiting shear deformation of viscoelastic materials. Background technique [0002] Earthquake force and wind vibration force are the main control loads borne by the building structure, and are also the main factors leading to the damage and collapse of the building structure. Accurately understand the force mechanism and dynamic response of the structure under the action of dynamic load, and implement reliable measures for it. Anti-vibration protection measures are a frontier research topic. Structural energy dissipation and vibration reduction control is a new type of anti-vibration method, which uses energy dissipation and vibration reduction devices to consume external excitation energy to reduce the damage of external excitation to the main structure. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98E04H9/02E04H9/14
CPCE04H9/02E04H9/0215E04H9/0235E04H9/14
Inventor 夏栋舟
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY