CN110761434A - Friction damper with built-in inertial volume unit - Google Patents
Friction damper with built-in inertial volume unit Download PDFInfo
- Publication number
- CN110761434A CN110761434A CN201911153152.4A CN201911153152A CN110761434A CN 110761434 A CN110761434 A CN 110761434A CN 201911153152 A CN201911153152 A CN 201911153152A CN 110761434 A CN110761434 A CN 110761434A
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- Prior art keywords
- gear
- friction damper
- plate
- friction
- unit
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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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
- E04H9/022—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising laminated structures of alternating elastomeric and rigid layers
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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
- E04H9/023—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins
Abstract
The invention discloses a friction damper with a built-in inertial volume unit, belonging to the technical field of energy dissipation and shock absorption of building structures. The sliding device slides through a sliding rail on an outer box bottom plate with a single-side opening, the inertial container unit is in meshed connection with the sliding device through a gear, and the friction damper is in meshed connection with the inertial container unit through a gear set. The invention introduces the inertial volume unit to realize the amplification of external excitation, and the deformation of the structure acting on the friction damper is increased by the amplification measure, so that the energy consumption capability of the friction damper is greatly increased. According to the actual design requirement, the amplification factor is adjusted by changing the transmission ratio of the inerter unit, the expected amplification effect can be achieved, and the safety and stability of the whole structure are guaranteed.
Description
Technical Field
The invention relates to the technical field of energy dissipation and shock absorption of building structures, in particular to a friction damper with a built-in inertial volume unit.
Background
China is a country with frequent earthquakes and frequent typhoons in the southeast coast, and strong earthquakes and typhoons can cause damage and even collapse of building structures and harm life safety of human beings. With the development of economy and the improvement of people on the cognition of energy dissipation and shock absorption technologies, more and more buildings adopt energy dissipation and shock absorption components. The friction damper has the characteristics of simple structure, excellent hysteretic performance and the like, and is gradually favored in the energy dissipation and shock absorption design of building structures in recent years.
At present, in the structural energy dissipation and shock absorption design, more earthquake input energy is consumed mainly by increasing the number of dampers or increasing the bearing capacity of the dampers, however, increasing the number of dampers means that more building positions are needed, the flexible use of building space can be influenced, the bearing capacity of the dampers can increase the stress of a substructure, the safety of the substructure is influenced, and therefore the working efficiency of the dampers needs to be improved in limited space resources, namely the energy consumption capacity of the dampers is improved.
Disclosure of Invention
In order to solve the problems, the invention provides a friction damper with a built-in inertial volume unit, so that the structure can obtain a larger energy consumption effect under the same deformation.
The technical scheme of the invention is as follows:
a friction damper with a built-in inertial volume unit comprises an outer box with a single-side opening, a plate-type friction damper, a sliding device and an inertial volume unit, wherein the sliding device slides through a sliding rail on a bottom plate of the outer box, the inertial volume unit is connected with the sliding device through a gear set, the plate-type friction damper is connected with the inertial volume unit through the gear set, and one end of the plate-type friction damper is connected with the outer box.
Furthermore, the sliding device comprises a first sliding element, a second sliding element, a first lug plate, a sliding rail and a sliding block, wherein the sliding rail is connected with the bottom plate of the outer box through a bolt, the sliding block is connected with the second sliding element through a bolt, one end of the second sliding element is connected with the first sliding element, the other end of the second sliding element is connected with the inertial container unit, and the first sliding element is connected with the first lug plate.
Furthermore, the inertia container unit comprises a first gear, a second gear, a third gear, a second lug plate and a rotating shaft, wherein the first gear is meshed with the sliding device, the first gear is meshed with the second gear, the second gear is coaxial with the third gear and rotates synchronously, the third gear is meshed with the plate type friction damper, the two rotating shafts penetrate through the second lug plate and are respectively connected with the first gear and the second gear, and the second lug plate is fixed on a bottom plate of the outer box.
Furthermore, the plate type friction damper comprises friction damper cover plates, friction materials and high-strength bolts, one end of each friction damper cover plate is fixedly connected with the outer box end plate, each friction plate is arranged between the two friction damper cover plates, the friction damper cover plates are connected with the friction plates through the high-strength bolts, the friction materials are arranged between the friction damper cover plates and the friction plates, and one ends of the friction plates are meshed with the gears III.
Furthermore, the lug plate II is connected with the bottom plate of the outer box through bolts or welding, the gear I is meshed with the sliding element II of the sliding device, the gear I is meshed with the gear II, the gear II and the gear III rotate coaxially and synchronously, and the gear III is meshed with the friction plate of the plate type friction damper.
Further, the diameters of the first gear and the second gear are smaller than the diameter of the third gear.
Compared with the prior art, the invention has the beneficial effects that:
(1) the inertia capacity unit is arranged, so that the friction damper has larger deformation under small deformation of the structure, and the energy consumption capability of the friction damper is improved.
(2) According to the invention, by calculating the transmission ratio of the inerter unit, the energy consumption capability of the damper can be improved, the structural damping ratio can be improved, the earthquake and wind load effects can be reduced, the safety redundancy of the structure can be improved, and the flexibility of the spatial arrangement of the building can be increased under the condition of not increasing the number of the dampers and improving the bearing capacity.
Drawings
FIG. 1 is a front view of a friction damper with an inertial volume unit built therein according to the present invention;
FIG. 2 is a top view of a friction damper with an inertial volume unit built therein according to the present invention;
FIG. 3 is a schematic diagram of a construction connection mode of a friction damper with an inertial volume unit built therein according to the present invention.
Wherein, 1 is an outer box end plate; 2 is an outer box top plate, 3 is an outer box bottom plate, 4 is an outer box side plate I, 5 is an outer box side plate II, 6 is a friction damper cover plate, 7 is a friction plate, 8 is a friction material, 9 is a high-strength bolt, 10 is an ear plate I, 11 is a sliding element I, 12 is a sliding element II, 13 is a sliding rail, 14 is a sliding block, 15 is an ear plate II, 16 is a gear I, 17 is a gear II, 18 is a gear III, 19 is a rotating shaft, 20 is a lower cantilever wall, 21 is an upper cantilever wall, 22 is an ear plate III, 23 is a frame column, and 24 is a frame beam.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Example (b): as shown in fig. 1 and 2, a friction damper with a built-in inerter unit comprises an outer box with a single-side opening, a plate-type friction damper, a sliding device and an inerter unit. The sliding device slides through a sliding rail 13 on the outer box bottom plate 3, the inertial container unit is connected with the sliding device through a gear set, and the plate type friction damper is connected with the inertial container unit through the gear set. The invention introduces the inertial volume unit to realize the amplification of external excitation, and the deformation of the structure acting on the friction damper is increased by the amplification measure, so that the energy consumption capability of the friction damper is greatly increased. According to the actual design requirement, the amplification factor is adjusted by changing the transmission ratio of the inerter unit, the expected amplification effect can be achieved, and the safety and stability of the whole structure are guaranteed.
The outer container includes outer container end plate 1, outer container roof 2, outer container bottom plate 3, outer container curb plate 4, outer container curb plate two 5, and an outer container roof 2, an outer container bottom plate 3, two outer container curb plates and an outer container end plate 1 have constituteed the outer container of a single face open-ended.
The sliding device comprises a first ear plate 10 connected with the structure, a first sliding element 11, two second sliding elements 12, a sliding block 14 connected with the second sliding elements 12 and a sliding rail 13. The slide rail 13 is fixed on the outer box bottom plate 3, and the length of the slide rail 13 needs to meet the design displacement requirement.
The plate-type friction damper comprises two friction damper cover plates 6, a friction plate 7, two friction layers between the friction damper cover plates 6 and the friction plate 7 and a corresponding number of high-strength bolts 9. The friction layer is made of friction materials 8, and the distance between the friction plate 7 and the first sliding element 11 needs to be determined through calculation so as to meet the design displacement requirement. The length of the tooth flanks on the friction plate 7 should meet the design stroke requirements.
The inerter unit comprises a gear set, two rotating shafts 19 and two lug plates 15 supporting the rotating shafts 19, the gear set is hinged to the rotating shafts 19, the rotating shafts 19 are hinged to the two lug plates 15, and the two lug plates 15 are fixed to the outer box bottom plate 3. The gear set comprises two coaxially fixed gears I16, two coaxially fixed gears II 17 and a gear III 18, the two coaxially fixed gears I16 are fixedly sleeved on a rotating shaft 19, the two coaxially fixed gears II 17 and the gear III 18 are sleeved on the other rotating shaft 19, the gear I16 is meshed with the sliding element II 12, the gear I16 is meshed with the gear II 17, and the gear III 18 is meshed with the friction plate 7. The sliding device is used as an input end of energy of the inertial volume unit, and displacement (acceleration) input by the structure is amplified through the gear set and then output to the plate type friction damper. The diameters of the first gear 16 and the second gear 17 are smaller than that of the third gear 18, and the design of the gear set transmission ratio can meet the displacement amplification factor required by the inertial volume unit.
The friction damper cover plate 6, the friction plate 7, the friction material 8 and the high-strength bolt 9 form a plate type friction damper, and the plate type friction damper is connected or welded on the outer box end plate 1 through bolts. The slide rail 13 is connected with the outer box bottom plate 3 through a bolt, the slide block 14 is connected with the second sliding element 12 through a bolt, and the second sliding element 12 slides through the slide block 14 and the slide rail 13. The second lug plate 15 is connected with the bottom plate 3 of the outer box through a bolt, the first gear 16 is meshed with the second sliding element 12, the first gear 16 is meshed with the second gear 17, the second gear 17 and the third gear 18 rotate coaxially and synchronously, the third gear 17 is meshed with the friction plate 7, in the inertial container unit, the second sliding element 12 is meshed with the first gear 16 and serves as an input end of displacement (acceleration), the friction plate 7 is meshed with the third gear 18 and serves as an output end of displacement (acceleration), and the transmission ratio between the third gear 18 and the first gear 16 is set through the third gear 18 to ensure the amplification of the displacement (acceleration), so that the energy consumption capacity of the friction damper is improved. The desired amplification effect can be achieved by properly setting the transmission ratio of the third gear 18 to the first gear 16.
Fig. 3 shows a wall type connection mode of the friction damper with the inertial volume unit inside, but the invention is not limited thereto. The lower cantilever wall 20 of the wall type connecting middle frame is connected with an outer box of a friction damper with an internal inertial container unit, and the upper cantilever wall 21 is in pin connection with the first lug plate 10 of the friction damper through a third lug plate 22. Under the action of earthquake and typhoon, the structure generates reciprocating vibration, the structural deformation is transmitted to the friction damper of the built-in inertial volume unit through the cantilever walls of the upper and lower beams, the structural deformation is amplified through the built-in inertial volume unit, the energy consumption of the friction damper is increased, and the earthquake and typhoon action is reduced.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (6)
1. A friction damper with a built-in inerter unit is characterized in that: the sliding device slides through a sliding rail on a bottom plate of the outer box, the inertial volume unit is connected with the sliding device through a gear set, the plate-type friction damper is connected with the inertial volume unit through the gear set, and one end of the plate-type friction damper is connected with the outer box.
2. The friction damper with built-in inertance unit of claim 1, wherein: the sliding device comprises a first sliding element, a second sliding element, a first lug plate, a sliding rail and a sliding block, the sliding rail is connected with the bottom plate of the outer box through a bolt, the sliding block is connected with the second sliding element through a bolt, one end of the second sliding element is connected with the first sliding element, the other end of the second sliding element is connected with the inertial volume unit, and the first sliding element is connected with the first lug plate.
3. The friction damper with built-in inertance unit of claim 1, wherein: the inertia container unit comprises a first gear, a second gear, a third gear, a second lug plate and rotating shafts, the first gear is meshed with the sliding device, the first gear is meshed with the second gear, the second gear is coaxial and synchronous with the third gear, the third gear is meshed with the plate type friction damper, the two rotating shafts penetrate through the second lug plate to be connected with the first gear and the second gear respectively, and the second lug plate is fixed on a bottom plate of the outer box.
4. The friction damper with built-in inertance unit of claim 1, wherein: the plate type friction damper comprises friction damper cover plates, friction materials and high-strength bolts, one end of each friction damper cover plate is fixedly connected with an outer box end plate, each friction plate is arranged between the two friction damper cover plates, the friction damper cover plates are connected with the friction plates through the high-strength bolts, the friction materials are arranged between the friction damper cover plates and the friction plates, and one ends of the friction plates are meshed with the gears III.
5. The friction damper with built-in inertance unit of claim 3, wherein: the second lug plate is connected with the bottom plate of the outer box through bolts or welding, the first gear is meshed with the second sliding element of the sliding device, the first gear is meshed with the second gear, the second gear and the third gear are coaxial and rotate synchronously, and the third gear is meshed with a friction plate of the plate type friction damper.
6. The friction damper with built-in inertance unit of claim 3, wherein: the diameters of the first gear and the second gear are smaller than the diameter of the third gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911153152.4A CN110761434A (en) | 2019-11-22 | 2019-11-22 | Friction damper with built-in inertial volume unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911153152.4A CN110761434A (en) | 2019-11-22 | 2019-11-22 | Friction damper with built-in inertial volume unit |
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| Publication Number | Publication Date |
|---|---|
| CN110761434A true CN110761434A (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911153152.4A Pending CN110761434A (en) | 2019-11-22 | 2019-11-22 | Friction damper with built-in inertial volume unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704587A (en) * | 2022-04-21 | 2022-07-05 | 中铁建设集团有限公司 | Tuned liquid damper for realizing inertial capacity function based on guide rail type planetary gear |
-
2019
- 2019-11-22 CN CN201911153152.4A patent/CN110761434A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704587A (en) * | 2022-04-21 | 2022-07-05 | 中铁建设集团有限公司 | Tuned liquid damper for realizing inertial capacity function based on guide rail type planetary gear |
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