CN109779367A - A resettable friction damper - Google Patents
A resettable friction damper Download PDFInfo
- Publication number
- CN109779367A CN109779367A CN201711105668.2A CN201711105668A CN109779367A CN 109779367 A CN109779367 A CN 109779367A CN 201711105668 A CN201711105668 A CN 201711105668A CN 109779367 A CN109779367 A CN 109779367A
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- China
- Prior art keywords
- outside plate
- friction material
- frcition damper
- plate
- fixedly connected
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention, which provides one kind, can reset frcition damper characterized by comprising outside plate has two layers, is located at most upper one layer and basecoat；First friction material, there is two layers, respectively be fixedly connected on the inside of outside plate；The inside of outside plate is arranged in middle plate；Second friction material is covered on the two sides up and down of middle plate, is fixedly connected with middle plate；Second friction material is in contact with the first friction material；Shape memory alloy bar is fixedly connected after middle plate with outside plate.Of the invention resets frcition damper, and due to joined shape memory alloy bar, give the advantage that: 1. automatically reset, and will not generate residual deformation.2. not changing the construction of frcition damper, additional installation space is not needed.3. not influencing the normal work of frcition damper.4. increasing the energy dissipation capacity of frcition damper, damping effect is more preferable.
Description
Technical field
The present invention relates to one kind can reset frcition damper, belongs to damper field.
Background technique
In order to control dynamic response of the building structure especially high building structure under wind load and earthquake load, often
The energy introduced using some mechanical device dissipation wind shakes and geological process, thus achieve the purpose that the main supporting member of protection,
Here it is the concepts of structure control.Currently, the research of structure control and application direction are broadly divided into the actively control of passive control, half
System, active control and mixing control are several.Wherein, passive control technology is because its simple structure is reliable, energy-dissipating property is stable, price
It is cheap, easy to maintain and be widely used in engineering construction, or antidetonation or wind resistance for improving existing old buildings
Among.The passive energy-dissipating and shock-absorbing technology of structure, which refers to, is arranged energy-consuming device, such as damper at certain positions of structure, passes through consumption
The friction of energy device generation, bending, elastoplasticity hysteresis deform to dissipate or absorb the energy in Seismic input structure, reduce main body
The earthquake response of structure destroys or collapses so that structure be avoided to generate, achievees the purpose that shockproof control.Current architecture configuration system
The middle passive energy-consumption shock-absorption device used can be divided mainly into four major class: viscous damper, metal damper, viscoelastic damper with
And frcition damper.
Frcition damper is cheap with its, reliable performance characteristic and the generally favor by people.Frcition damper
The glide direction that generates on the contact surface opposite frictional force when contacting object relative displacement using two, by friction energy-dissipating,
Vibration of building energy is converted to thermal dissipation.
However existing frcition damper have the drawback that can not self-resetting, after vibration, into yield situation
Frcition damper can generally generate residual deformation, certain adverse effect is caused to non-structural element and human residential environment.
Some Important buildings need to come into operation immediately after shaking, and residual deformation pole is unfavorable for the performance requirement of this kind of building.
Summary of the invention
The purpose of the present invention is to provide one kind can reset frcition damper, to solve the above problems.
Present invention employs following technical solutions:
The present invention, which provides one kind, can reset frcition damper characterized by comprising outside plate has two layers, is located at most
Upper one layer and basecoat；First friction material, there is two layers, respectively be fixedly connected on the inside of outside plate；Middle plate is arranged in outside plate
The inside；Second friction material is covered on the two sides up and down of middle plate, is fixedly connected with middle plate；Second friction material rubs with first
Material is wiped to be in contact；Shape memory alloy bar is fixedly connected after middle plate with outside plate.
Further, of the invention to reset frcition damper, resilient biasing member is also included, is vertically arranged with outside plate, by
Outside plate is passed through up to lower.
Further, of the invention to reset frcition damper, further includes: resilient biasing member, it is right across the both ends of outside plate
First friction material and the second friction material apply adjustable pressure.
Further, of the invention to reset frcition damper, it can also have the following features: wherein, elastic force-applying portion
Part includes screw rod, nut and elastic component, and elastic component setting passes through outside plate and elastic component in the upper surface of outside plate, screw rod, then with spiral shell
Box thread connection.
Further, of the invention to reset frcition damper, it can also have the following features: wherein, shape memory closes
The recoverable strain value of golden stick is 6%~8%.
Further, of the invention to reset frcition damper, long hole is also included, is arranged between two outside plates, the spiral shell
Bar passes perpendicularly through the long hole.
Advantageous effect of the invention
Of the invention resets frcition damper, due to joined shape memory alloy bar, gives the advantage that:
1. automatically reseting, residual deformation will not be generated.2. not changing the construction of frcition damper, additional installation space is not needed.3.
The normal work of frcition damper is not influenced.4. increasing the energy dissipation capacity of frcition damper, damping effect is more preferable.
Detailed description of the invention
Fig. 1 is the overall structure diagram for resetting frcition damper of the invention.
Specific embodiment
Illustrate a specific embodiment of the invention below in conjunction with attached drawing.
As shown in Figure 1, the frcition damper that resets of the invention includes: outside plate 1, middle plate 2, the first friction material layer 3,
Two friction material layers 4, shape memory alloy bar 5 and resilient biasing member.
Outside plate 1 has two layers, is located at most upper one layer that can reset frcition damper and basecoat.
First friction material layer 3 has two layers, is fixedly connected respectively with the inside of outside plate 1.
Middle plate 2, is arranged in the inside of outside plate 1, positioned at one layer of the centre that can reset frcition damper.
Second friction material layer 4 is covered on the two sides up and down of middle plate 2, is fixedly connected with middle plate 2, and the second friction material
The bed of material 4 is in contact with the first friction material layer 3.First friction material layer 3 and the composition friction of the second friction material layer 4 are secondary, local
When shake occurs, the first friction material layer 3 and the 4 phase mutual friction of the second friction material layer, to consume the energy of earthquake.
Shape memory alloy bar 5 is fixedly connected after middle plate with outside plate 1.
Resilient biasing member can to the first friction material layer 3 and the application of the second friction material layer 4 across the both ends of outside plate
The pressure of adjusting.Specifically, resilient biasing member includes screw rod 6, nut 7 and elastic component 8, the upper of outside plate is arranged in elastic component
Face, screw rod 6 pass through outside plate 1 and elastic component 8, are then threadedly coupled with nut 7.Resilient biasing member for regulating friction force or
Say the size of damping force.
The both ends of shape memory alloy bar 5 are fixed on outside plate, in middle plate aperture, marmem are allowed to pass through.Shape
The recoverable strain value of memory alloy bar 5 is 6%~8%.Wherein marmem (shape memory alloy, abbreviation
It SMA) is the new function material with perception and driving capability, shape memory effect, super-elasticity and the high resistant nit that it has
Property, incomparable superior of other metal materials is shown in its control (active control, semi- active control, passive control etc.)
Property, and SMA material has a good fatigue resistance, corrosion resistance, therefore the damper made by it, and strong, durability is good and performance
Stablize.
Long hole 9 is arranged between two outside plates, the size of plate and outside plate relative displacement in the length decision of long hole 9.Screw rod 6
Long hole is passed through from the direction vertical with long hole.
When macroseism is come interim, energy is not only consumed by sliding friction, but also due to the super-elasticity of marmem,
Allow to have biggish plastic deformation under responsive to axial force, can achieve the purpose for absorbing seismic energy by this deformation, simultaneously
Damper slide displacement is further reduced, reduces the horizontal displacement of building to a certain extent.In addition, due to shape memory
Alloy has distinctive recoverable strain value very big by 6%~8%, and usual metal material is difficult to realize, and can play Self-resetting
Effect.Since shape memory alloy material has shape memory effect, for the present apparatus after shake, marmem restores initial
Shape makes device automatically reset, this is not available for ordinary metallic material.Simultaneously shape memory alloy material have it is corrosion-resistant,
Antifatigue advantage.
Friction material layer in the present invention, can be using various friction material layers used by existing frcition damper.
Marmem of the invention, as long as can be reached using its recoverable strain value of the marmem of various formulas
6%~8% can be as the material of shape memory alloy bar.
Claims (6)
1. one kind can reset frcition damper characterized by comprising
Outside plate has two layers, is located at most upper one layer and basecoat；
First friction material, there is two layers, respectively be fixedly connected on the inside of outside plate；
The inside of the outside plate is arranged in middle plate；
Second friction material is covered on the two sides up and down of the middle plate, is fixedly connected with the middle plate；
Second friction material is in contact with first friction material；
Shape memory alloy bar is fixedly connected after the middle plate with the outside plate.
2. frcition damper can be resetted as described in claim 1, which is characterized in that also include
Resilient biasing member is vertically arranged with the outside plate, from top to bottom passes through outside plate.
3. frcition damper can be resetted as claimed in claim 2, which is characterized in that further include:
Resilient biasing member applies the first friction material and the second friction material adjustable across the both ends of the outside plate
Pressure.
4. frcition damper can be resetted as claimed in claim 3, it is characterised in that:
Wherein, the resilient biasing member includes screw rod, nut and elastic component, and the upper of the outside plate is arranged in the elastic component
Face, the screw rod pass through outside plate and elastic component, then connect with nut thread.
5. frcition damper can be resetted as described in claim 1, it is characterised in that:
Wherein, the recoverable strain value of the shape memory alloy bar is 6%~8%.
6. frcition damper can be resetted as claimed in claim 4, which is characterized in that also include
Long hole is arranged between two outside plates, and the screw rod passes perpendicularly through the long hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711105668.2A CN109779367A (en) | 2017-11-10 | 2017-11-10 | A resettable friction damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711105668.2A CN109779367A (en) | 2017-11-10 | 2017-11-10 | A resettable friction damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109779367A true CN109779367A (en) | 2019-05-21 |
Family
ID=66485547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711105668.2A Pending CN109779367A (en) | 2017-11-10 | 2017-11-10 | A resettable friction damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109779367A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101614A (en) * | 2019-12-26 | 2020-05-05 | 郑州大学 | Composite coupling beam damper and assembling method thereof |
| CN111425039A (en) * | 2020-04-02 | 2020-07-17 | 东南大学 | Micro-prestressed self-resetting wall with self-resetting variable friction damper and construction method thereof |
| CN111425038A (en) * | 2020-04-02 | 2020-07-17 | 东南大学 | Non-prestressed self-resetting energy dissipation support device with variable friction damper |
-
2017
- 2017-11-10 CN CN201711105668.2A patent/CN109779367A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101614A (en) * | 2019-12-26 | 2020-05-05 | 郑州大学 | Composite coupling beam damper and assembling method thereof |
| CN111101614B (en) * | 2019-12-26 | 2024-09-27 | 郑州大学 | Composite beam connecting damper and assembly method thereof |
| CN111425039A (en) * | 2020-04-02 | 2020-07-17 | 东南大学 | Micro-prestressed self-resetting wall with self-resetting variable friction damper and construction method thereof |
| CN111425038A (en) * | 2020-04-02 | 2020-07-17 | 东南大学 | Non-prestressed self-resetting energy dissipation support device with variable friction damper |
| CN111425039B (en) * | 2020-04-02 | 2021-08-24 | 东南大学 | Micro-prestressed self-resetting wall with self-resetting variable friction damper and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190521 |