CN112900667A

CN112900667A - Copper seam-viscoelastic damper

Info

Publication number: CN112900667A
Application number: CN202110069131.5A
Authority: CN
Inventors: 张多新; 曲艺豪; 石艳柯; 崔越越; 王清云
Original assignee: North China University of Water Resources and Electric Power
Current assignee: North China University of Water Resources and Electric Power
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-06-04

Abstract

The invention discloses a copper seam-viscoelastic damper, which comprises a slotted copper plate, a first metal plate, viscoelastic elements, a second metal plate, an upper base and a lower base, wherein the lower part of the slotted copper plate is fixed on two sides of the lower base, the upper part of the slotted copper plate is fixed on two sides of the upper base, the lower part of the first metal plate is fixed on the middle part of the lower base, the elastic elements are respectively fixed on two surfaces of the first metal plate, the second metal plate is fixed on the surface of each viscoelastic element far away from the first metal plate in an attached mode, and the upper part of the second metal plate is fixed in the middle of the upper base. The copper seam damper and the viscoelastic damper are combined, so that the energy consumption capability of the traditional copper seam damper is improved, the buckling energy consumption of the steel plate is opened when a small earthquake occurs, the copper seam damper and the viscoelastic damper do work simultaneously to release energy when a large earthquake occurs, the damping effect is excellent, and the copper seam damper and the viscoelastic damper are safe and reliable and high in stability.

Description

Copper seam-viscoelastic damper

Technical Field

The invention belongs to the technical field of energy dissipation and shock absorption of civil engineering structures, and particularly relates to a copper seam-viscoelastic damper for shock isolation and shock absorption.

Background

High-rise buildings and complex special-shaped space structures are increasing day by day, and the improvement of the earthquake resistance of the structure becomes a structural design key point. The traditional anti-seismic technology meets the anti-seismic requirement by increasing the section of a component and improving the strength of materials, and the energy dissipation and shock absorption technology is used as a passive control technology, a damper is arranged in a structure, and the purpose of reducing the vibration response of the structure is realized by driving through the deformation of the structure and further absorbing the energy of earthquake or wind vibration. By adopting the energy dissipation and shock absorption technology, the anti-seismic and wind-vibration safety of the structure can be improved, the section size of the main structural member can be reduced, the using area of the building can be increased, and certain economic benefit can be achieved.

Common dampers in building structures are copper seam dampers, viscoelastic dampers, and the like, which function in a single manner. Such as: the copper seam damper achieves a stable effect by buckling deformation energy consumption of the copper seam plate, the material is easy to damage, and the damper is easy to damage by large vibration; the viscoelastic damper stabilizes the balance of a building through friction energy consumption, and has poor capability of coping with various seismic shocks. Therefore, in order to better meet the requirements of practical engineering, the research and development and application of the multifunctional composite damper are very important.

Disclosure of Invention

The invention provides a copper seam-viscoelastic damper, which combines the copper seam damper with the viscoelastic damper, improves the energy consumption capability of the traditional copper seam damper, realizes the buckling energy consumption of an unsealing steel plate in a small earthquake, realizes the simultaneous work release of the copper seam damper and the viscoelastic damper in a large earthquake, and has the advantages of excellent damping effect, safety, reliability and high stability.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides a copper seam-viscoelastic damper, includes slotted copper, first metal sheet, viscoelastic element, second metal sheet, goes up base, lower base, the both sides of lower base are fixed the lower part of slotted copper, the both sides of going up the base are fixed the upper portion of slotted copper, the mid portion of lower base is fixed the lower part of first metal sheet, two surfaces of first metal sheet are fixed respectively elastic element, and every viscoelastic element is kept away from to laminate in the fixed surface of first metal sheet has the second metal sheet, the upper portion of second metal sheet is fixed in the centre of going up the base.

Preferably, in order to make the structure more stable, a gap between the upper base and the second metal plate and the slotted copper plate is fixed by a first spacer, and a gap between the lower base and the first metal plate and the slotted copper plate is fixed by a second spacer.

Preferably, the upper base and the lower base are both angle steel.

Preferably, the slotted copper plate, the first metal plate, the second metal plate and the angle steel are fixedly connected through bolts.

Preferably, the viscoelastic element is made of a polymer material with viscoelastic properties.

Preferably, the first metal plate, the second metal plate and the viscoelastic element are connected by adhesion.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:

the invention adopts an unsealing steel plate to form a copper seam damper with an upper base and a lower base, a first metal plate, a viscoelastic element and a second metal plate at the middle part are fixed to form a viscoelastic damper with the upper base and the lower base, and the two types of dampers are combined together to form a composite damper; the energy consumption capacity of the traditional copper seam damper is improved, the composite damper is effective in both small earthquakes and large earthquakes by combining a displacement dependent device and a velocity dependent device, the slotted copper plate performs buckling damping energy consumption in the small earthquakes, the slotted copper plate and the large earthquakes simultaneously do work, and a viscoelastic element performs shearing resistance vibration after the slotted copper plate is broken, so that the viscoelastic element makes up for the defects of the copper seam damper; in small earthquakes, the slotted copper plate remains elastic, the viscoelastic element acts to dissipate seismic energy, and for large earthquakes, the viscoelastic element and the slotted copper plate work simultaneously to release large seismic energy. The composite damper provided by the invention has the advantages of excellent damping effect, safety, reliability, high stability and good durability.

Drawings

FIG. 1 is a front view of a copper slot-viscoelastic damper according to an embodiment of the invention;

FIG. 2 is a side view of a copper slot-viscoelastic damper according to an embodiment of the invention;

FIG. 3 is a top view of a copper slot-viscoelastic damper according to an embodiment of the invention;

FIG. 4 is a schematic view of an angle iron according to an embodiment of the present invention;

description of reference numerals: 1-a lower base; 2-upper base plate; 3-slotting copper plate; 4-a first metal plate; 5-a viscoelastic element; 6-a second metal plate; 7-a first cushion block; 8-a second cushion block; 9-bolt; 10-angle steel.

Detailed Description

The present invention will be described in more detail with reference to the accompanying drawings and specific examples. Advantages and features of the present invention will become apparent from the following description and from the claims.

Referring to fig. 1, a copper slot-viscoelastic damper comprises a slotted copper plate 3, a first metal plate 4, viscoelastic elements 5, a second metal plate 6, an upper base 2 and a lower base 1, wherein bolts 9 at two sides of the lower base 1 fix the lower part of the slotted copper plate 3, bolts 9 at two sides of the upper base 2 fix the upper part of the slotted copper plate 3, a bolt 9 at the middle part of the lower base 1 fixes the lower part of the first metal plate 4, the viscoelastic elements 5 are respectively adhered and fixed on two surfaces of the upper part of the lower base 1 of the first metal plate 4, a second metal plate 6 is adhered and fixed on the surface of each viscoelastic element 5 far away from the first metal plate 4, and a bolt 9 at the upper part of the second metal plate 6 is fixed in the middle of the upper base 2.

In order to make the structure more stable, the gap between the upper base 2 and the second metal plate 6 and the slotted copper plate 3 is fixed by the first cushion block 7, and the gap between the lower base 1 and the first metal plate 4 and the slotted copper plate 3 is fixed by the second cushion block 8.

Wherein, the upper base 2 and the lower base 1 are both angle steel 10 as shown in fig. 4.

The viscoelastic element 5 is preferably made of a polymer material having viscoelastic properties.

In this embodiment, the copper plate 3 that cracks is fixed with the angle steel bolt 9 to form the copper seam damper, the first metal plate 4, the viscoelastic element 5 and the second metal plate 6 are fixed by bonding to form the viscoelastic damper, the two types of dampers are connected with the angle steel to form the composite damper together, the upper part of the damper adopts the first cushion block 7 to fill the gap, the lower part adopts the second cushion block 8 to fill the gap, so that the angle steel is closely connected with the copper plate 3 that cracks, the first metal plate 4 and the second metal plate 6, the structure is more stable, the energy consumption capability of the traditional copper seam damper is improved, and by combining the displacement dependence type device and the speed dependence type device, the damper is effective for small earthquakes and major earthquakes, and has the advantages of excellent damping effect, safety, reliability, high stability and good durability.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.

Claims

1. The utility model provides a copper seam-viscoelastic damper, its characterized in that, includes slotted copper (3), first metal sheet (4), viscoelastic element (5), second metal sheet (6), goes up base (2), lower base (1), the both sides of lower base (1) are fixed the lower part of slotted copper (3), the both sides of going up base (2) are fixed the upper portion of slotted copper (3), the mid portion of lower base (1) is fixed the lower part of first metal sheet (4), two surfaces of first metal sheet (4) are fixed respectively elastic element (5), every viscoelastic element (5) keep away from laminate in the fixed surface of first metal sheet (4) has second metal sheet (6), the upper portion of second metal sheet (6) is fixed in the centre of going up base (2).

2. The copper slit-viscoelastic damper as claimed in claim 1, characterized in that the gap between the upper base (2) and the second metal plate (6) and the slit copper plate (3) is fixed by a first spacer (7), and the gap between the lower base (1) and the first metal plate (4) and the slit copper plate (3) is fixed by a second spacer (8).

3. The copper slit-viscoelastic damper as claimed in claim 1, characterised in that the upper base (2) and the lower base (1) are both angle steels (10).

4. The copper slit-viscoelastic damper as claimed in claim 3, characterized in that the slit copper plate (3), the first metal plate (4), the second metal plate (6) and the angle iron (10) are fixedly connected by means of bolts (9).

5. The copper slot-viscoelastic damper as claimed in claim 1, characterised in that the viscoelastic element (5) is made of a polymer material with viscoelastic properties.

6. Copper slot-viscoelastic damper according to any of claims 1-5, characterised in that the first metal plate (4), the second metal plate (6) and the viscoelastic element (5) are connected by gluing.