CN206128341U - A damping device for large -span structure - Google Patents
A damping device for large -span structure Download PDFInfo
- Publication number
- CN206128341U CN206128341U CN201621040919.4U CN201621040919U CN206128341U CN 206128341 U CN206128341 U CN 206128341U CN 201621040919 U CN201621040919 U CN 201621040919U CN 206128341 U CN206128341 U CN 206128341U
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- mass
- damping device
- top board
- base plate
- slide bar
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The utility model relates to a damping device for large -span structure, including roof, bottom plate and establish the quality piece between roof and bottom plate, be equipped with the slide bar between roof and the bottom plate, the slide bar both ends respectively with roof and bottom plate fixed connection, the quality piece is equipped with the through -hole that corresponds with the slide bar, is equipped with the slider in the through -hole, the slide bar passes the slider, between roof and the quality piece, be equipped with damping structure between bottom plate and the quality piece respectively. Compared with the prior art, the utility model discloses the vibration damper design is succinct, but the piecemeal preparation, high pressure heater work efficiency rate is put forward in the mill's module production of being convenient for, shortens construction cycle, and the suitability is strong, the attachment device quality is little, simple with the main structure connected mode, does not need complicated structure system to support its installation, the device can reach the purpose of adjusting the damping device frequency at any time through changing the additional mass piece, still set up spacing buffer block among this damping device, ensured the safety of using.
Description
Technical field
This utility model is related to long span building seismic resistance field, fills more particularly, to a kind of damping for longspan structure
Put.
Background technology
With the span and scale of economy and the needs of urban construction and development, building and bridge it is increasing, large span
Structure is common in physical culture, conference ＆ exhibition and Aerodrome Construction and Loads of Long-span Bridges etc..Building design and construction technology there occurs in recent years
Very great change, the progress of computational methods, light-weight high-strength material use so that structural system become lighter, more soft, damp it is less,
And designer trends are crossing over longer span, to this reduces rigidity and the resistance of structure with the structural system of minimum weight
Buddhist nun.Traditional method for designing, by the rigidity and structural shape that change structure, the frequency for improving structure reduces the vibration of structure；
But it is from from the point of view of Technological Economy, attractive in appearance and space utilization, irrational under many circumstances.
Solved the above problems using the oscillation damping method of tuned mass damper, TMD, be then a kind of economic and rational solution party
Method.It, using one of earliest Structure uniformity device, is by spring, antivibrator and quality that tuned mass damper, TMD (TMD) is
The vibrational system of block composition.When main structure produces vibration under outer incentive action, tuned mass damper, TMD is driven to vibrate together,
Its inertia force for producing is reacted in structure, and its damping also plays energy dissipating effect, the dynamic respons of main structure is decayed and is received
To control.
At present, TMD shock mitigation systems be verified as in high-rise and Vibration Control of High-rising Buildings cost-effective means it
One, and in large span spatial structure, as, the features such as its vibration shape is complicated, frequency is mixed, the research of TMD dampings only resides within reason
In terms of by analysis, seldom, it is scarce that the theory does not apply to a major reason of practical structures to the application in Practical Project
Few a set of effective longspan structure damping control device.
Chinese patent CN 105156578A disclose a kind of tuned mass damper, TMD, including upper bracket, lower carriage and quality
Block, upper bracket and two middle side part of lower carriage are connected by viscous damper.Upper bracket and two forequarter of lower carriage are provided with one grade of set
Bar assembly and two grades of set bar assemblies, cover pocketed springs in bar assembly or two grades of set bar assemblies at one grade；Upper bracket upper end or so two
Side is provided with guide rail, and be slidably connected on guide rail mass, and the connection of mass rear end adjusts screw mandrel, adjusts screw mandrel and is fixed on upper bracket
Feed screw nut's connection at rear portion.In longspan structure vibration processes, vertical motion is only controlled, though the vibration of horizontal direction is not controlled
System, but be also what is can not ignore, this patent of invention is vertical Frequency Adjustable mass damper, lacks the limit to mass horizontal direction
Position device.
Chinese patent CN 101806104B disclose a kind of tuned mass damper, TMD of suspension, including spring, mass
And Effects of Viscous Fluid Damper, mass by spring and Effects of Viscous Fluid Damper be suspended in it is upper overarm or top board on, viscous fluid
Antivibrator mainly by the cylinder barrel for sealing, can slide up and down guide rod through cylinder barrel and the piston being fixed on guide rod is constituted, it is viscous
The damped coefficient of fluid damper changes with the change of Effects of Viscous Fluid Damper displacement.The mass of this patent of invention design
Positioned at whole tuned mass damper, TMD lower end, center of gravity is on the lower side, though being provided with " two-way guide locating device provided " can ensure self structure
It is not destroyed, but the lateral Moment Influence brought to main structure is larger.Separately, this tuned mass damper, TMD is by changing having for spring
Imitate the number of turns to adjust antivibrator frequency, the frequency range of adjustment is limited and discontinuous.
Additionally, above-mentioned two patents do not design the connection with agent structure.
Utility model content
The purpose of this utility model is exactly to provide a kind of damping for longspan structure and fill to solve the above problems
Put.
The purpose of this utility model is achieved through the following technical solutions：
A kind of damping device for longspan structure, including top board, base plate and the matter being located between top board and base plate
Gauge block, is provided with slide bar between described top board and base plate, slide bar two ends are fixedly connected with top board and base plate respectively, described quality
Block is provided with through hole corresponding with slide bar, is provided with slide block in through hole, described slide bar pass through slide block, described top board and mass it
Between, be respectively equipped with damping structure between base plate and mass, by damping structure, during vibration, mass does reciprocal fortune along slide bar
It is dynamic, during use, this device is arranged on the design attitude of structure.
Described mass is square, and the surrounding of mass connects multiple additional masses, described quality by screw rod
Block and additional mass are made using the big metal material of density, preferably cast iron.
Described damping structure is made up of spring and antivibrator, and one end of spring is fixed on mass, the other end with resistance
Buddhist nun's device connects, and the other end of antivibrator is connected on top board or base plate.
The surrounding of described top board and base plate is provided with screw, the two ends of described slide bar respectively with top board and base plate on spiral shell
Hole is fixedly connected.
Described top board and base plate are provided with multiple limiting buffer blocks, and described limiting buffer block includes cushion and Magnet
Layer, described cushion are obtained using resin or rubber system.
The upper and lower surface of described mass is provided with magnet piece corresponding with limiting buffer block, the magnet piece and top board or bottom
Magnet layer magnetic pole on plate is set to attract each other.
Described top board upper end is provided with the bolt being connected with damping main structure, and described slide block passes through fixed screw and matter
Gauge block connects.
Described additional mass is provided with 2-4, and is arranged symmetrically.
The design of mass and spring in described damping device, specifically using following methods：
A () determines single damping device mass according to the bearing capacity of local at damping effect and main structure suspension
Quality mTMD；
B () determines the frequency corresponding to the main structure dynamic response main contributions vibration shape according to design data or field measurement
fs, determine the motion frequency f of damping device massTMD=fs；
C () is according to formula kTMD=mTMD(2·π·fTMD)2/ N determines the stiffness coefficient of each spring, and wherein N is spring root
Number；
D () is according to formula kTMD=Gd4/(8D3N), satisfactory spring is selected or makes, wherein, shears of the G for spring
Modulus, diameters of the d for spring wire, central diameters of the D for spring, n are active spring coils number.
Described mTMDFor the quality summation of mass quality and additional mass.
, for large span main structure due to weaker in vertical direction rigidity, main structure is based on vertical motion for this utility model
Dynamic trait, with the shock absorption principle of TMD, there is provided a kind of effective damping device, main structure is protected by.The dress
Put closely coupled with main structure by bolt, an entirety, the mass and main structure only on slide bar are formed with main structure
There is vertical relative motion.When main structure is interfered vibration, the mass motion in damping device is driven.It is former by resonance
Reason, when the frequency of mass motion is close to or is identical with the frequency that main structure is moved, mass reaches resonance state, in the shape
Under state, damping device can apply to move reciprocal power to weaken the motion of main structure with main structure, so as to play to main structure
Protective effect；From for the angle of energy, the energy transfer of main structure motion on damping device, then by the resistance on damping device
Buddhist nun dissipates, so as to reduce the kinergety of main structure.
The TMD masses of this damping device are made up of mass and additional mass, additional mass can carry out change and
Dismounting, it is contemplated that below in terms of two：(1) structure design with actually have difference, main frequency to be controlled might have change
Change, and damping device TMD masses can be adjusted by changing additional mass in the case of damping device is manufactured
Quality, so as to the frequency that can adjust TMD makes which be close to structure；(2) after the shock effect that main structure is subjected to larger, main knot
The dynamic trait of structure changes, and former damping device may cannot play cushioning effect, now can be by changing additional mass
Block, the frequency and basic frequency of structure rate for adjusting the damping device are close to, and are allowed to also play preferable damping effect after the earthquake.
Compared with prior art, this utility model damping device utilizes longspan structure dynamic trait, catches principal contradiction,
Vertical motion control is carried out to main structure only, the effect of multidirectional damping has been reached by unidirectional control.This utility model damping
Device design is succinct, can piecemeal make, be easy to factory modularization to produce, improve working (machining) efficiency, shorten construction period, the suitability
By force；This damping device additional mass is little, and main structure connected mode it is simple, it is not necessary to complicated structural system is supporting which is pacified
Dress.The damping device not only can be mounted directly in the structure in the structure construction stage, can with some need reinforcement it is existing
Install on longspan structure, reach damping effect；The damping device can adjust damping at any time by changing additional mass
Device frequency；Limiting buffer block is also set up in the damping device, after spring failure, mass is adsorbed one with damping device
Rise, be unlikely to apply extra dynamic load to structure, ensured the safety for using.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is that mass through hole of the present utility model installs partial schematic diagram with slide block；
Schematic diagrams of the Fig. 3 for this utility model damping structure；
Fig. 4 is use state schematic diagram of the present utility model；
In figure：1- top boards；2- damping structures；3- masses；4- additional masses；5- slide bars；6- limiting buffer blocks；7- bottoms
Plate；8- main structures；11- bolts；21- springs；22- antivibrators；31- through holes；32- magnet pieces；41- screw rods；51- slide blocks；52- is solid
Determine screw；61- cushions；62- Magnet layers.
Specific embodiment
This utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of damping device for longspan structure, as Figure 1-3, including top board 1, base plate 7 and is located at top board 1
And the mass 3 between base plate 7, four slide bars 5 are provided between top board 1 and base plate 7, top board 1 is provided with spiral shell with the surrounding of base plate 7
Hole, the two ends of slide bar 5 are fixedly connected with the screw on top board 1 and base plate 7 respectively.Mass 3 is provided with and 5 corresponding through hole of slide bar
31, slide block 51 is provided with through hole 31, slide bar 5 passes through slide block 51, divides between top board 1 and mass 3, between base plate 7 and mass 3
Damping structure 2 is not provided with.
Mass 3 is square, and the surrounding of mass 3 is by four additional masses 4 of connection of screw rod 41, additional mass 4
It is arranged symmetrically.Mass 3 and additional mass 4 are made using the big metal material of density.Damping structure 2 is by spring 21 and resistance
Buddhist nun's device 22 is constituted, and one end of spring 21 is fixed on mass 3, and the other end is connected with antivibrator 22, the other end of antivibrator 22
It is connected on top board 1 or base plate 7.Top board 1 and base plate 7 are provided with four limiting buffer blocks 6, and limiting buffer block 6 includes cushion
61 and Magnet layer 62, cushion 61 is obtained using rubber system.
The upper and lower surface of mass 3 is provided with magnet piece 32 corresponding with limiting buffer block, the magnet piece 32 and top board 1 or bottom
62 magnetic pole of Magnet layer on plate 7 is set to attract each other.1 upper end of top board is provided with the bolt 11 being connected with damping main structure 8, slide block
51 are connected with mass 3 by fixed screw 52.
The device when in use, is mounted in the bottom of main structure 8 by this device, and Fig. 4 is use state schematic diagram, works as main structure
8 be interfered vibration when, drive damping device in mass 3 move.When the frequency of the motion of mass 3 is moved with main structure 8
Frequency be close to or it is identical when, mass 3 reaches resonance state, and in this condition, damping device can apply to move with main structure 8
Reciprocal power weakening the motion of main structure, so as to play a protective role to main structure.
Embodiment 2
The mass of the damping device and spring design, specifically using following steps：
A () determines single damping device mass according to the bearing capacity of local at damping effect and main structure suspension
Quality mTMD, mTMDFor the quality summation of mass quality and additional mass；
B () determines the frequency corresponding to the main structure dynamic response main contributions vibration shape according to design data or field measurement
fs, determine the motion frequency f of damping device massTMD=fs；
C () is according to formula kTMD=mTMD(2·π·fTMD)2/ N determines the stiffness coefficient of each spring, and wherein N is spring root
Number；
D () is according to formula kTMD=Gd4/(8D3N), satisfactory spring is selected or makes, wherein, shears of the G for spring
Modulus, diameters of the d for spring wire, central diameters of the D for spring, n are active spring coils number.
Claims (8)
1. a kind of damping device for longspan structure, including top board (1), base plate (7) and top board (1) and base plate are located at
(7) mass (3) between, it is characterised in that slide bar (5), slide bar (5) two are provided between described top board (1) and base plate (7)
End is fixedly connected with top board (1) and base plate (7) respectively, and described mass (3) is provided with through hole (31) corresponding with slide bar (5),
Be provided with slide block (51) in through hole (31), described slide bar (5) through slide block (51), described top board (1) and mass (3) it
Between, be respectively equipped with damping structure (2) between base plate (7) and mass (3), by damping structure (2), mass (3) during vibration
Move reciprocatingly along slide bar (5).
2. a kind of damping device for longspan structure according to claim 1, it is characterised in that described mass
(3) it is square, the surrounding of mass (3) connects additional mass (4) by screw rod (41).
3. a kind of damping device for longspan structure according to claim 1, it is characterised in that described damping knot
Structure is made up of spring (21) and antivibrator (22), and one end of spring (21) is fixed on mass (3), the other end and antivibrator
(22) connect, the other end of antivibrator (22) is connected on top board (1) or base plate (7).
4. a kind of damping device for longspan structure according to claim 1, it is characterised in that described top board
(1) be provided with screw with the surrounding of base plate (7), the two ends of described slide bar (5) respectively with top board (1) and base plate (7) on screw
It is fixedly connected.
5. a kind of damping device for longspan structure according to claim 1, it is characterised in that described top board
(1) and base plate (7) is provided with limiting buffer block (6), described limiting buffer block (6) is including cushion (61) and Magnet layer
(62)。
6. a kind of damping device for longspan structure according to claim 5, it is characterised in that described mass
(3) upper and lower surface is provided with magnet piece (32) corresponding with limiting buffer block (6), the magnet piece (32) and top board (1) or base plate
(7) Magnet layer (62) magnetic pole on is set to attract each other.
7. a kind of damping device for longspan structure according to claim 1, it is characterised in that described top board
(1) upper end is provided with the bolt (11) being connected with damping main structure, and described slide block (51) is by fixed screw (52) and quality
Block (3) connects.
8. a kind of damping device for longspan structure according to claim 2, it is characterised in that described additional matter
Gauge block (4) is arranged symmetrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621040919.4U CN206128341U (en) | 2016-09-07 | 2016-09-07 | A damping device for large -span structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621040919.4U CN206128341U (en) | 2016-09-07 | 2016-09-07 | A damping device for large -span structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206128341U true CN206128341U (en) | 2017-04-26 |
Family
ID=58568664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621040919.4U Expired - Fee Related CN206128341U (en) | 2016-09-07 | 2016-09-07 | A damping device for large -span structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206128341U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106436947A (en) * | 2016-09-07 | 2017-02-22 | 同济大学 | Damping device for large-span structure and design method thereof |
| CN108316502A (en) * | 2018-02-12 | 2018-07-24 | 天津大学 | A kind of SMA silks-frcition damper suitable for Reticulated Domes |
| CN110566617A (en) * | 2019-09-17 | 2019-12-13 | 天津理工大学 | magnetism-rigidity-based non-smooth vibration absorber |
| CN110566616A (en) * | 2019-09-17 | 2019-12-13 | 天津理工大学 | passive variable-rigidity non-smooth vibration absorber |
-
2016
- 2016-09-07 CN CN201621040919.4U patent/CN206128341U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106436947A (en) * | 2016-09-07 | 2017-02-22 | 同济大学 | Damping device for large-span structure and design method thereof |
| CN106436947B (en) * | 2016-09-07 | 2019-08-06 | 同济大学 | A kind of damping device and its design method for longspan structure |
| CN108316502A (en) * | 2018-02-12 | 2018-07-24 | 天津大学 | A kind of SMA silks-frcition damper suitable for Reticulated Domes |
| CN108316502B (en) * | 2018-02-12 | 2023-11-14 | 天津大学 | SMA wire-friction damper suitable for single-layer spherical reticulated shell |
| CN110566617A (en) * | 2019-09-17 | 2019-12-13 | 天津理工大学 | magnetism-rigidity-based non-smooth vibration absorber |
| CN110566616A (en) * | 2019-09-17 | 2019-12-13 | 天津理工大学 | passive variable-rigidity non-smooth vibration absorber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20210907 |