CN107989217A - A kind of space grid structure distribution built-in bar-type impact damper - Google Patents
A kind of space grid structure distribution built-in bar-type impact damper Download PDFInfo
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- CN107989217A CN107989217A CN201711074602.1A CN201711074602A CN107989217A CN 107989217 A CN107989217 A CN 107989217A CN 201711074602 A CN201711074602 A CN 201711074602A CN 107989217 A CN107989217 A CN 107989217A
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- mass block
- grid structure
- space grid
- damper
- limiting plate
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 4
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 239000003190 viscoelastic substance Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0235—Anti-seismic devices with hydraulic or pneumatic damping
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The application provides a kind of space grid structure distribution built-in bar-type impact damper, belongs to architectural engineering antidetonation and wind resistance technical field.The damper includes damper cavity unit, mass block, limiting plate, connecting spring, guide rod, viscoplasticity padded coaming and advance ball.Damper cavity unit is hollow rods；Guide rod is axially fixed in damper housing unit, and connecting spring, mass block and limiting plate sequentially pass through the outer surface stickup viscoplasticity padded coaming of guide rod, mass block and limiting plate；The junction of mass block and guide rod is equipped with advance ball.For the damper of the application when main structure is vibrated, mass block and main structure produce relative motion, when mass block does not collide with limiting plate, are equal to traditional TMD, each damper is tuned as different intrinsic frequencies, can be to different vibration shape vibration dampings；When mass block and limiting plate collide, can be consumed energy by hitting.The damper can be applicable to architectural engineering antidetonation and wind resistance field.
Description
Technical field
The invention belongs to architectural engineering vibration damping and wind resistance technical field, and in particular in a kind of space grid structure distribution
Put rod-type impact damper.
Background technology
In recent years, tuned mass damper and energy-eliminating shock-absorbing damper vibration damping control technology due to its structure type is simple,
Effectiveness in vibration suppression significantly, oscillation damping and energy dissipating clear mechanism, the advantages that external energy need not be applied, be easily achieved and obtain extensively should
With.For space grid structure since its span is big, vertical rigidity is smaller, is easy to be influenced be subject to wind or geological process, its three-dimensional space
Between characteristic it is notable, and the dynamic response vibration shape is intensive.
However, tuned mass damper common at present or impact damper are placed at the top of building structure more or bottom,
Quality and volume are larger, and sphere of action is concentrated, and only control several vibration shapes before minority, effective bandwidth is relatively narrow, for greatly across sky
Between structural vibration control effect unobvious.Traditional tuned mass damper or impact damper are all by external structure as matter
Gauge block, takes main structure inner space, and may cause main structure locally dead weight difference is larger, and rod piece and joints are not
.Space grid structure rod piece inner space can be used as damper cavity structure, make full use of space, reduce damper and make
Valency.Therefore, using the form of space grid structure distribution built-in bar-type impact damper, moved by mass block absorbing structure
Can, then collide with limiting plate and carry out dissipation energy, so as to achieve the purpose that to carry out energy-eliminating shock-absorbing, this is for Practical Project
Energy-eliminating shock-absorbing is of great significance.
The content of the invention
The present invention in order to solve the problems, such as that conventional butt damper is not suitable in long-span space truss structure vibration control,
It is an object of the invention to propose a kind of space grid structure distribution built-in bar-type impact damper, in space grid structure
Collision system is set in rod piece, to transmit and dissipation energy.This damper structure is simple, easy to implement, and damping property is good.This hair
Bright damper is distributed in each rod piece of main structure, and when main structure is vibrated, mass block can produce opposite fortune with main structure
It is dynamic, when mass block does not collide with limiting plate, it is equal to conventional tune mass damper (Tuned Mass Damper TMD),
The kinetic energy of main structure passes to mass block by spring, so as to reduce the kinetic energy of main structure in itself, each damper is tuned as not
Same intrinsic frequency, can be to different vibration shape vibration dampings；When mass block and limiting plate collide, mass block collides with each other with limiting plate
Dissipation energy, mass block produces nonlinear deformation in an impact with the viscoelastic material outside limiting plate, so as to increase in collision
Energy dissipation.
Technical scheme：
A kind of space grid structure distribution built-in bar-type impact damper, including damper cavity unit, mass block, limit
Position plate, connecting spring, guide rod, viscoplasticity padded coaming and advance ball；The built-in bar-type impact damper is distributed in
In space grid structure；
The damper cavity unit is hollow rods；Guide rod is axially fixed in damper cavity unit, connection
Spring, mass block and limiting plate sequentially pass through guide rod, and connecting spring one end is fixed on the guide bar, the other end and mass block phase
Even, mass block is slided along guide rod, and limiting plate is fixedly connected with guide rod, and limiting plate dissipates energy consumption with mass block collision；Quality
Paste viscoplasticity padded coaming in the outer surface of block and limiting plate；The junction of mass block and guide rod is equipped with advance ball, slides
Ball is slided along guide rod, is rubbed for reducing.
The mass block and limiting plate are solid iron.
The advance ball is stainless steel, and surface scribbles lubriation material.
The viscoplasticity padded coaming is rubber, foamed plastics or knitted cotton.
The gross mass of all mass blocks is the 1%- of space grid structure overall quality in the space grid structure
3%, the quality of single mass is determined according to the number of damper in space grid structure；The rigidity k of the connecting springi
Pass through formulaTo calculate, wherein, fiFor the frequency of i-th of damper, the space net rack of control required for being
The modal frequency of structure, miFor the quality of mass block in i-th of damper.
The distance between the mass block and limiting plate are encouraged according to the quality and external load of mass block and determined, damping
The mass block of device is bigger, and spacing should be bigger, in application is installed, can be adjusted according to control effect.
The frequency f of the damperiDetermined according to the model analysis of space grid structure, obtained by model analysis
The vibration shape modal participating mass ratio of each vibration shape, the control vibration shape is the larger former first order modes of vibration shape modal participating mass ratio, control
The accumulated quality of the vibration shape participates in the sum of coefficient and should be greater than or equal to 90%, and the frequency of damper is the frequency of the vibration shape in order to control.
Operation principle：The damper of the present invention is distributed in each rod piece of space net rack, when space net rack vibrates, matter
Gauge block can produce relative motion with space net rack, when mass block does not collide with limiting plate, be equal to conventional tune Tuned mass damper
Device (Tuned Mass Damper TMD), the kinetic energy of space grid structure passes to mass block by spring, so as to reduce space
The kinetic energy of grid structure in itself, each damper are tuned as different intrinsic frequencies, can be to different vibration shape vibration dampings；Work as mass block
When being collided with limiting plate, mass block and limiting plate collide with each other dissipation energy, mass block and the viscoelastic material outside limiting plate
Nonlinear deformation is produced in an impact, so as to increase the energy dissipation in collision.
Beneficial effect of the present invention：
1. application is clear and definite, intensive suitable for the vibration shape, the significant space grid structure earthquake of spatial character or charming appearance and behaviour are shaken
In dynamic control.
2. simple structure, the characteristics of making full use of the rod piece of large span spatial structure hollow, single big mass block is divided into
Several small mass blocks, are distributed according to certain rule in different rod pieces, save space and cost, made easy to engineering,
Installation and use, it is easier to promoted in engineering construction.
3. the big vibration shape of the modal contribution that can be directed to space grid structure carries out vibration damping, vibration damping bandwidth, effect ideal.
4. the mechanism of energy consumption is simple, when mass block does not collide with limiting plate, it is equal to conventional tune mass damper
(Tuned Mass Damper TMD), the kinetic energy of space grid structure passes to mass block by spring, so as to reduce space networks
The kinetic energy of frame structure in itself, each damper are tuned as different intrinsic frequencies, can be to different vibration shape vibration dampings；When mass block and
When limiting plate collides, mass block and limiting plate collide with each other dissipation energy, and mass block exists with the viscoelastic material outside limiting plate
Nonlinear deformation is produced in collision, so as to increase the energy dissipation in collision.
Brief description of the drawings
Fig. 1 is space grid structure built-in bar-type impact damper top view of the present invention.
Fig. 2 is mass block of the present invention along bar axial section.
Fig. 3 is mass block cross sectional view of the present invention.
Fig. 4 is the spacing plate of the present invention along bar axial section.
Fig. 5 is limiting plate cross sectional view of the present invention.
Fig. 6 is arrangement example top view of the present invention in space net rack.
Fig. 7 is arrangement exemplary cross sectional figure of the present invention in space net rack.
In figure：1 damper cavity unit；2 mass blocks；3 limiting plates；4 connecting springs；5 guide rods；6 viscoplasticity fenders
Material；7 advance balls.
Embodiment
The embodiment that the invention will now be described in detail with reference to the accompanying drawings.
Embodiment 1：As shown in Figure 1, be a kind of space grid structure distribution built-in bar-type impact damper of the present invention,
It mainly includes damper cavity unit 1, mass block 2, limiting plate 3, connecting spring 4, guide rod 5, viscoplasticity padded coaming 6,
Advance ball 7.
As shown in Figure 2,3, there is advance ball between mass block and guide rod, reduce friction between the two, advance ball
On scribble lubricant with reduce abrasion.
As shown in Figure 4,5, it is fixedly connected between limiting plate and guide rod.
As shown in Figure 6,7, this damper can be arranged in any position in space grid structure, and the overstriking line in figure is
Damper exemplary plot.Specific location in Practical Project can join according to the dynamic response of space grid structure to its vibration shape
With coefficient, by mode participation coefficient or the principal mode controlled, the vibration shape abdomen for being arranged in each principal mode of damper are needed
Point.
Damper cavity unit 1 is the rod piece of space grid structure, has a fixed guide rod 5 in cavity, has above
Connecting spring 4, mass block 2, wherein limiting plate 3, connecting spring, 4 one end are fixedly connected with guide rod 5, the other end and mass block 2
It is connected, has advance ball 7 between mass block 2 and guide rod 5, limiting plate 3 is fixedly connected with guide rod 4.The mass block and limit
Position plate is ring-type solid iron, and mass block, spacing plate shape, length are determined by the member system feature of space grid structure,
The quality of mass block and the length of spring are related with the frequency of space grid structure, according to the dynamic response of space grid structure,
Its mode participation coefficient is obtained, the principal mode for needing to control is obtained by mode participation coefficient, so that it is determined that each damper
Each frequency, the quality of mass block and the rigidity of spring also thereby determine that.Advance ball is stainless steel, and surface scribbles profit
Sliding material.The distance between the mass block 2 and limiting plate 3 are encouraged according to the quality and external load of mass block and determined, resistance
The mass block of Buddhist nun's device is bigger, and spacing should be bigger, in application is installed, can be adjusted according to control effect.Viscoplasticity fender
Expect that (6) are to include rubber, it is any one or more in foamed plastics or knitted cotton.
Claims (10)
1. a kind of space grid structure distribution built-in bar-type impact damper, it is characterised in that including damper cavity unit
(1), mass block (2), limiting plate (3), connecting spring (4), guide rod (5), viscoplasticity padded coaming (6) and advance ball (7)；
The built-in bar-type impact damper is distributed in space grid structure；
The damper cavity unit (1) is hollow rods；Guide rod (5) is axially fixed in damper cavity unit (1),
Connecting spring (4), mass block (2) and limiting plate (3) sequentially pass through guide rod (5), and connecting spring (4) one end is fixed on guide rod
(5) on, the other end is connected with mass block (2), and mass block (2) is slided along guide rod (5), and limiting plate (3) is fixed with guide rod (5)
Connection, limiting plate (3) dissipate energy consumption with mass block (2) collision；Paste viscoplasticity in the outer surface of mass block (2) and limiting plate (3)
Padded coaming (6)；The junction of mass block (2) and guide rod (5) is equipped with advance ball (7), and advance ball (7) is along guide rod
(5) slide, rub for reducing.
A kind of 2. space grid structure distribution built-in bar-type impact damper according to claim 1, it is characterised in that
The mass block (2) and limiting plate (3) is solid iron.
3. a kind of space grid structure distribution built-in bar-type impact damper according to claim 1 or 2, its feature exist
In the advance ball (7) is stainless steel, and surface scribbles lubriation material.
4. a kind of space grid structure distribution built-in bar-type impact damper according to claim 1 or 2, its feature exist
In the viscoplasticity padded coaming (6) is rubber, foamed plastics or knitted cotton.
A kind of 5. space grid structure distribution built-in bar-type impact damper according to claim 3, it is characterised in that
The viscoplasticity padded coaming (6) is rubber, foamed plastics or knitted cotton.
6. a kind of space grid structure distribution built-in bar-type impact damper according to claim 1,2 or 5, its feature
It is, the gross mass of all mass blocks (2) is the 1%- of space grid structure overall quality in the space grid structure
3%, the quality of single mass (2) is determined according to the number of damper in space grid structure；The mass block (2) and limit
The distance between position plate (3) is encouraged according to the quality and external load of mass block and determined.
A kind of 7. space grid structure distribution built-in bar-type impact damper according to claim 3, it is characterised in that
The gross mass of all mass blocks (2) is the 1%-3% of space grid structure overall quality in the space grid structure, single
The quality of mass block (2) is determined according to the number of damper in space grid structure；The mass block (2) and limiting plate (3)
The distance between according to the quality and external load of mass block encourage determine.
A kind of 8. space grid structure distribution built-in bar-type impact damper according to claim 4, it is characterised in that
The gross mass of all mass blocks (2) is the 1%-3% of space grid structure overall quality in the space grid structure, single
The quality of mass block (2) is determined according to the number of damper in space grid structure；The mass block (2) and limiting plate (3)
The distance between according to the quality and external load of mass block encourage determine.
9. a kind of space grid structure distribution built-in bar-type impact damper according to claim 1,2,5,7 or 8, its
It is characterized in that, the rigidity k of the connecting spring (4)iPass through formulaTo calculate, wherein, fiFor i-th of resistance
The frequency of Buddhist nun's device, the modal frequency of the space grid structure of control, m required for beingiFor mass block (2) in i-th of damper
Quality.
10. a kind of space grid structure distribution built-in bar-type impact damper according to claim 6, its feature exist
In the rigidity k of the connecting spring (4)iPass through formulaTo calculate, wherein, fiFor i-th damper
Frequency, the modal frequency of the space grid structure of control, m required for beingiFor the quality of mass block (2) in i-th of damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711074602.1A CN107989217B (en) | 2017-11-06 | 2017-11-06 | Spatial grid structure distributed built-in rod type collision damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711074602.1A CN107989217B (en) | 2017-11-06 | 2017-11-06 | Spatial grid structure distributed built-in rod type collision damper |
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| Publication Number | Publication Date |
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| CN107989217A true CN107989217A (en) | 2018-05-04 |
| CN107989217B CN107989217B (en) | 2023-11-17 |
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| CN201711074602.1A Active CN107989217B (en) | 2017-11-06 | 2017-11-06 | Spatial grid structure distributed built-in rod type collision damper |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500468A (en) * | 2019-07-26 | 2019-11-26 | 武汉地震工程研究院有限公司 | A kind of building pipe structural collision tuned mass damping device |
| CN113517646A (en) * | 2021-03-19 | 2021-10-19 | 江门明浩电力工程监理有限公司 | 10kv oil-immersed transformer grounding dismounting fence and floor type transformation distribution equipment |
| CN113638514A (en) * | 2021-08-18 | 2021-11-12 | 武汉理工大学 | Semi-active tuned mass damper based on magnetorheological elastomer |
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Cited By (3)
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| CN110500468A (en) * | 2019-07-26 | 2019-11-26 | 武汉地震工程研究院有限公司 | A kind of building pipe structural collision tuned mass damping device |
| CN113517646A (en) * | 2021-03-19 | 2021-10-19 | 江门明浩电力工程监理有限公司 | 10kv oil-immersed transformer grounding dismounting fence and floor type transformation distribution equipment |
| CN113638514A (en) * | 2021-08-18 | 2021-11-12 | 武汉理工大学 | Semi-active tuned mass damper based on magnetorheological elastomer |
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| Publication number | Publication date |
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| CN107989217B (en) | 2023-11-17 |
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