CN215330649U - One-way yielding energy dissipation damper and building frame structure applying same - Google Patents
One-way yielding energy dissipation damper and building frame structure applying same Download PDFInfo
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- CN215330649U CN215330649U CN202121409482.8U CN202121409482U CN215330649U CN 215330649 U CN215330649 U CN 215330649U CN 202121409482 U CN202121409482 U CN 202121409482U CN 215330649 U CN215330649 U CN 215330649U
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Abstract
The utility model relates to a building frame construction of one-way yield power consumption attenuator and applied this attenuator belongs to architectural equipment technical field, including damping device, damping device includes first dead lever and second dead lever, be provided with the buffer layer between first dead lever and the second dead lever, the buffer layer is used for leading to sliding of first dead lever or second dead lever to the earthquake and cushions. This application has the effect of the installation of the attenuator of being convenient for.
Description
Technical Field
The application relates to the technical field of building equipment, in particular to an unidirectional yield energy dissipation damper and a building frame structure applying the damper.
Background
With the development of the construction industry, a plurality of construction technology and products are gradually applied to the design and construction of house buildings; the damping damper comprises various types of damping dampers which are widely applied to the building earthquake resistance, and common dampers comprise buckling restrained braces, viscous dampers, viscoelastic dampers, metal yield damper frequency-modulated mass dampers and the like. The damper represented by the buckling restrained brace is flexible in arrangement and most widely applied; the damper generates horizontal displacement of the building under the action of earthquake, so that the energy of earthquake action is absorbed and consumed through the tension and pressure deformation of the core material of the constraint support.
At present, as shown in fig. 1, the damper generally comprises a steel core 6 and a constraining member 7 for sleeving the steel core 6; when the damper is installed, the damper is generally installed between a frame beam and a frame column, connecting steel plates are pre-embedded in the frame beam and the frame column, and then two end parts of the steel core 6 are welded on the connecting steel plates; when an earthquake comes, the frame beam or the frame column generates smaller transverse movement, and meanwhile, the steel core 6 is in a compressed or stretched state to absorb the acting energy of the earthquake on the building, so that the influence of the earthquake on the building is reduced, and the use safety of the building is improved; at the same time, the possibility of instability of the steel core 6 is reduced under the action of the constraining member 7.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: to prevent the steel core from being destabilized by pressure, the constraining member is generally bulky and thus heavy, resulting in a relatively inconvenient installation.
SUMMERY OF THE UTILITY MODEL
In order to facilitate installation of the damper, the application provides an unidirectional yield energy dissipation damper and a building frame structure applying the damper.
In a first aspect, the unidirectional yield energy-consuming damper provided by the application adopts the following technical scheme:
the utility model provides an one-way yield energy consumption attenuator, includes damping device, damping device includes first dead lever and second dead lever, be provided with the buffer layer between first dead lever and the second dead lever, the buffer layer is used for leading to the slippage of first dead lever or second dead lever to cushion to the earthquake.
By adopting the technical scheme, when the damper is used, the first fixed rod or the second fixed rod slides to extrude the buffer layer, and the buffer layer is pressed to buffer the sliding of the first fixed rod or the second fixed rod, so that the influence of an earthquake on a building is reduced; meanwhile, compared with the prior art, the input of a restraint part is reduced, the size and the weight of the damper are reduced, and the damper is convenient to mount.
Optionally, the buffer layer is arranged in the sleeve, and the end parts, close to each other, of the first fixing rod and the second fixing rod are arranged in the sleeve in a sliding mode.
By adopting the technical scheme, the first fixing rod and the second fixing rod are guided in a sliding manner under the action of the sleeve, so that the sliding of the first fixing rod or the second fixing rod is conveniently transmitted to the buffer layer, and the impact capacity is conveniently buffered; simultaneously, under telescopic effect, the buffer layer of being convenient for is installed, makes the buffer layer be located between first dead lever and the second dead lever, has reduced the possibility that the buffer layer drops.
Optionally, the end portions of the first fixing rod and the second fixing rod, which are located in the sleeve, are provided with guide pieces, and the guide pieces enable the first fixing rod and the second fixing rod to be located on the same axis with the sleeve in the sliding process.
By adopting the technical scheme, under the action of the guide piece, the sliding of the first fixed rod and the second fixed rod is guided, so that the first fixed rod, the second fixed rod and the sleeve are positioned on the same axis, and the impact on the first fixed rod or the second fixed rod is conveniently transmitted to the buffer layer; meanwhile, under the action of the guide piece, the possibility of inclination of the first fixing rod and the second fixing piece is reduced, the possibility of compression and bending of the first fixing rod or the second fixing rod is further reduced, and the service life of the damper is prolonged.
Optionally, the guide member includes disks fixedly disposed on ends of the first fixing rod and the second fixing rod located in the sleeve, a peripheral wall of the disk abuts against an inner wall of the sleeve, the disks are slidably disposed in the sleeve, and the buffer layer is disposed between the disks on both sides.
By adopting the technical scheme, the length directions of the first fixing rod and the second fixing rod are fixed under the action of the disc, so that the first fixing rod, the second fixing rod and the sleeve are positioned on the same axis; the disc has the advantages of stable structure and long service life; meanwhile, under the action of the disc, the diameters of the first fixing rod and the second fixing rod are reduced, and the size and the weight of the damper are further reduced.
Optionally, a blocking member is arranged on the sleeve and used for preventing the disc from being separated from the sleeve.
By adopting the technical scheme, when the first fixed rod slides towards and away from the second fixed rod under the action of an earthquake, the first fixed rod drives the sleeve to slide towards the direction away from the second fixed rod under the action of the blocking piece; meanwhile, under the action of the blocking piece, the sleeve slides to drive the second fixing rod to slide, so that the second fixing rod is stretched, and the second fixing rod absorbs the impact energy of the earthquake in the stretching process; when the first fixing rod slides towards the direction of the second fixing rod under the influence of an earthquake, the first fixing rod slides to compress the buffer layer, so that the impact energy of the earthquake is absorbed; in the process, the process that the first fixing rod and the second fixing rod are extruded is reduced, the possibility that the first fixing rod and the second fixing rod are instable is reduced, and the service life of the damper is prolonged.
Optionally, the blocking member includes a blocking cylinder disposed circumferentially on the inner wall of the sleeve and located at both ends of the sleeve, and a surface of the disc facing away from the buffer layer is used for abutting against the blocking cylinder.
By adopting the technical scheme, when the first fixed rod slides towards and away from the second fixed rod due to an earthquake, the first fixed rod drives the sleeve to slide towards the direction away from the second fixed rod under the action of the blocking cylinder, meanwhile, the sleeve slides to drive the second fixed rod to slide under the action of the blocking cylinder, so that the second fixed rod is stretched, and the second fixed rod absorbs the impact energy of the earthquake in the stretching process; when the first fixing rod slides towards the direction of the second fixing rod under the influence of an earthquake, the first fixing rod slides to compress the buffer layer, so that the impact energy of the earthquake is absorbed; in the process, the process that the first fixing rod and the second fixing rod are extruded is reduced, the possibility of instability of the first fixing rod and the second fixing rod is reduced, and the service life of the damper is prolonged; the barrier cylinder has the advantages of stable structure and easy acquisition; meanwhile, the disc is abutted against the blocking cylinder, so that the possibility of shaking of the first fixing rod and the second fixing rod in the sleeve is reduced, and the stability of the first fixing rod and the second fixing rod is improved; meanwhile, the blocking cylinder guides the first fixing rod and the second fixing rod, and the possibility of inclination of the first fixing rod and the second fixing rod is further reduced.
Optionally, the buffer layer includes a flexible layer made of a flexible filling material and disposed between the two disks, and the flexible filling material is used for absorbing impact energy applied to the first fixing rod or the second fixing rod by being squeezed and deformed by the disks.
Through adopting above-mentioned technical scheme, first guide bar and second guide bar drive the disc and slide, extrude flexible filler material, cause flexible filler material deformation to appear, at deformation in-process, absorb the impact energy that first dead lever and second dead lever received.
Optionally, the first fixing rod is a metal rod made of a metal material; the second fixing rod is a light buffer rod made of a light core material.
By adopting the technical scheme, the yield strength of the metal rod is greater than that of the light rod, and when the metal rod stretches the light rod, the light rod is stretched and deformed, so that the impact energy is absorbed conveniently.
In a second aspect, the present application provides a building frame structure using the damper, which adopts the following technical solutions:
the building frame applying the damper comprises the unidirectional yield energy consumption damper, and the two damping devices are characterized in that: the damping device comprises a damping device, a frame beam and a frame column, wherein the damping device is used for mounting the damping device, a second fixed rod in one damping device is connected with a first fixed rod in the other damping device, the other first fixed rod and the second fixed rod in the two damping devices are arranged on the frame beam or the frame column, and an included angle between the two damping devices is 1-180 degrees.
By adopting the technical scheme, the damping device does not need to be protected by a constraint part, so that the volume and the weight of the damping device are reduced, and the damping device is convenient to mount on a frame structure; the length of a single damper is reduced by connecting the two damping devices, so that the installation of the damper is further facilitated; meanwhile, the included angle between the damping devices is 1-180 degrees, so that the application range is widened.
Optionally, two bracing pieces are arranged at connection points of the damping devices, and one ends of the bracing pieces departing from the damping devices are arranged on the frame beams or the frame columns.
Through adopting above-mentioned technical scheme, under the effect of bracing piece, damping device's stability has been improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the damper is used, the first fixed rod or the second fixed rod slides to extrude the buffer layer, and the buffer layer is pressed to buffer the sliding of the first fixed rod or the second fixed rod, so that the influence of an earthquake on a building is reduced; meanwhile, compared with the prior art, the input of a restraint part is reduced, the size and the weight of the damper are reduced, and the damper is convenient to mount.
Drawings
FIG. 1 is a schematic view of a related art structure;
FIG. 2 is a cross-sectional view of a single-direction yielding energy-dissipating damper in accordance with an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a building frame structure to which the damper is applied according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a building frame structure to which the damper is applied according to an embodiment of the present application;
fig. 5 is a schematic structural view of a building frame structure to which the damper is applied according to an embodiment of the present application.
Description of reference numerals: 1. a damping device; 11. a first fixing lever; 12. a second fixing bar; 13. a buffer layer; 131. a flexible layer; 1311. asphalt hemp threads; 14. a sleeve; 15. a guide member; 151. a disc; 16. a blocking member; 161. a barrier cylinder; 2. a frame beam; 3. a frame column; 4. a connecting seat; 5. a support bar; 6. a steel core; 7. a constraining member.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The embodiment of the application discloses an unidirectional yield energy dissipation damper. Referring to fig. 2, the unidirectional yielding energy-consuming damper includes a damping device 1, the damping device 1 includes a first fixing rod 11 and a second fixing rod 12, in this embodiment, the first fixing rod 11 and the second fixing rod 12 are both cylinders, and the first fixing rod 11 is a metal rod made of a metal material, for example, a copper rod or an alloy rod; the second fixing rod 12 is a light buffer rod made of a light core material, for example, a rigid foam core material, a balsa core material, or the like; a buffer layer 13 is arranged between the first fixing rod 11 and the second fixing rod 12, and the buffer layer 13 is used for buffering the slippage of the first fixing rod 11 or the second fixing rod 12 caused by an earthquake; when the damper works, the first fixing rod 11 or the second fixing rod 12 slides to extrude the buffer layer 13, the buffer layer 13 is pressed to buffer the sliding of the first fixing rod 11 or the second fixing rod 12, and further the influence of an earthquake on a building is reduced.
Referring to fig. 2, in order to improve the stability of the first fixing rod 11 and the second fixing rod 12, the fixing device further includes a sleeve 14, in this embodiment, the sleeve 14 is cylindrical, the ends of the first fixing rod 11 and the second fixing rod 12 close to each other are slidably disposed in the sleeve 14, the sliding directions of the first fixing rod 11 and the second fixing rod 12 are parallel to the length direction of the sleeve 14, and the buffer layer 13 is disposed in the sleeve 14; the sleeve 14 guides the first fixing rod 11 and the second fixing rod 12 to slide, so that the possibility of inclination of the first fixing rod 11 and the second fixing rod 12 is reduced, and the possibility of bending of the first fixing rod 11 and the second fixing rod 12 due to compression is reduced.
To further improve the stability of the first fixing rod 11 and the second fixing rod 12, the diameters of the first fixing rod 11 and the second fixing rod 12 may be equal to the inner diameter of the sleeve 14.
Referring to fig. 2, in order to reduce the diameter of the first fixing rod 11 and the second fixing rod 12 and obtain a considerable stability, the ends of the first fixing rod 11 and the second fixing rod 12 located in the sleeve 14 are both provided with a guide 15, the guide 15 enables the first fixing rod 11 and the second fixing rod 12 to be located on the same axis with the sleeve 14 during the sliding process, in this embodiment, the guide 15 includes a disc 151 welded on the end where the first fixing rod 11 and the second fixing rod 12 are close to each other, further, the disc 151 is located in the sleeve 14, the peripheral wall of the disc 151 abuts against the inner wall of the sleeve 14, the disc 151 is slidably located in the sleeve 14, and the diameter of the first fixing rod 11 and the second fixing rod 12 is smaller than the diameter of the disc 151; the circumferential wall of the disk 151 abuts against the inner wall of the sleeve 14, and guides the first fixing lever 11 and the second fixing lever 12 so that the first fixing lever 11 and the second fixing lever 12 are positioned on the same axis as the sleeve 14.
In other embodiments, the disc 151 may be replaced by a guide block welded to the end portion of the first fixing rod 11 and the end portion of the second fixing rod 12 close to each other, and the inner wall of the sleeve 14 is provided with a guide groove for the guide block to slide; the guide block and the guide groove play the same guiding role as the disc 151; meanwhile, the limiting blocks and the limiting grooves limit the degree of freedom of the rotation of the first fixing rod 11 and the second fixing rod 12, and the possibility of the rotation of the first fixing rod 11 and the second fixing rod 12 is reduced.
Referring to fig. 2, in order to obtain the unidirectional yielding ability of the damping device 1, a blocking piece 16 is arranged in the sleeve 14, the blocking piece 16 is used for preventing the disc 151 from being separated from the sleeve 14, in this embodiment, the blocking piece 16 includes blocking cylinders 161 which are circumferentially welded on the inner wall of the sleeve 14 and located at two ends of the sleeve 14, the two blocking cylinders 161 correspond to the first fixing rod 11 and the second fixing rod 12 one by one, the first fixing rod 11 and the second fixing rod are both slidably connected in the blocking cylinders 161, and the surface of the disc 151, which is away from the buffer layer 13, is used for abutting against the blocking cylinders 161; when the first fixing rod 11 slides towards and away from the second fixing rod 12 due to an earthquake, the first fixing rod 11 drives the sleeve 14 to slide towards and away from the second fixing rod 12 under the action of the blocking cylinder 161; meanwhile, under the action of the blocking cylinder 161, the sleeve 14 slides to drive the second fixing rod 12 to slide, so as to stretch the second fixing rod 12, and the second fixing rod 12 absorbs the impact energy of the earthquake in the stretching process; when the first fixing rod 11 slides towards the second fixing rod 12 under the influence of an earthquake, the first fixing rod 11 slides to compress the buffer layer 13, so that the impact energy of the earthquake is absorbed; in the process, the first fixing rod 11 is stretched and extruded by an earthquake, and when the first fixing rod 11 is extruded, the buffer layer 13 buffers the first fixing rod 11, so that the possibility of instability of the first fixing rod 11 is reduced; the second fixing rod 12 is in a stretched or original state, so that the possibility of instability of the second fixing rod 12 is reduced; meanwhile, the blocking cylinder 161 guides the sliding of the first fixing lever 11 and the second fixing lever 12.
In other embodiments, the blocking cylinder 161 can be replaced by a blocking tab welded into the sleeve 14, against which the side of the disc 151 facing away from the damping layer 13 abuts; under the action of the stopper, the same function as that of the disk 151 is performed.
Referring to fig. 2, the buffer layer 13 is disposed between the two disks 151, the buffer layer 13 includes a flexible layer 131 disposed between the two disks 151 and made of a flexible filling material, the flexible filling material is used for absorbing impact energy applied to the first fixing rod 11 or the second fixing rod 12 by being extruded and deformed by the disks 151, and the flexible filling material is asphalt hemp 1311, polytetrafluoroethylene filler, or the like.
In other embodiments, the flexible filling material may be replaced by an elastic layer, which includes a spring welded on the two disks 151, and two ends of the spring correspond to the two disks 151 one to one; the spring buffers the sliding of the first fixing rod 11 and the second fixing rod 12; the springs can be replaced by steel plates and rubber pads filled between the two discs 151, and the steel plates and the rubber pads are arranged in a staggered mode; under the action of the steel plate and the rubber pad, the impact capacity of the first fixing rod 11 and the second fixing rod 12 is buffered.
The implementation principle of the unidirectional yield energy-consumption damper in the embodiment of the application is as follows:
when the damping device 1 is in operation, when the first fixing rod 11 slides towards and away from the second fixing rod 12 due to an earthquake, the first fixing rod 11 drives the sleeve 14 to slide towards and away from the second fixing rod 12, meanwhile, under the action of the blocking cylinder 161, the sleeve 14 slides to drive the second fixing rod 12 to slide, so that the second fixing rod 12 is stretched, and the second fixing rod 12 absorbs the impact energy of the earthquake in the stretching process; when the first fixing bars 11 are slid toward the second fixing bars 12 by the influence of the earthquake, the first fixing bars 11 are slid to compress the asphalt hemp 1311 and the like, thereby absorbing the impact energy of the earthquake.
The embodiment of the application discloses a building frame structure applying the damper, and with reference to fig. 3, the building frame structure comprises two unidirectional yielding energy dissipation dampers, two damping devices 1 are arranged, the building frame structure further comprises a frame beam 2 and a frame column 3, the frame beam 2 is integrally formed on the frame column 3, a connecting seat 4 is welded at the end part of a second fixed rod 12 in one damping device 1, a first fixed rod 11 in the other damping device 1 is welded on the connecting seat 4, the other first fixed rod 11 and the second fixed rod 12 in the two damping devices 1 are welded on embedded parts on the frame beam 2 or the frame column 3, and the included angle between the two damping devices 1 is 1-180 degrees;
referring to fig. 3, when the included angle between the two dampers is 180 °, the connecting seat 4 is welded to the frame beam 2, and the first fixing rod 11 and the second fixing rod 12 located at the two ends of the connecting seat 4 are welded to the frame column 3;
referring to fig. 4, in order to improve the stability of the damping devices 1, the supporting rods 5 are welded to the connection points of the two damping devices 1, and one ends of the supporting rods 5 departing from the damping devices 1 are arranged on the frame beams 2 or the frame columns 3; when frame construction has the requirement when higher to the shock attenuation effect, and when unrestricted to building function: the included angle between the two dampers is 180 degrees, the connecting seat 4 is welded on the frame beam 2, and the end part of the support rod 5 departing from the damping device 1 is welded on the frame column 3;
referring to fig. 5, in order to obtain a better damping effect and have no requirement on building functions, the first fixing rod 11 and the second fixing rod 12 at the two ends of the two damping devices 1 are welded at the two ends of the frame beam 2, and the included angle between the two damping devices 1 is 120 degrees; one end of the support rod 5 departing from the damping device 1 is welded at two ends of the other frame, and the included angle between the support rods 5 is 120 degrees;
when the distance between the two frame columns 3 is large, the included angle between the two damping devices 1 is 1 degree, the first fixing rod 11 and the second fixing rod 12 at the two ends of the two damping devices 1 are welded on the frame columns 3, and the end part of the support rod 5 departing from the damping devices 1 is welded on the other frame column 3.
In other embodiments, the support rod 5 may be hinged to the connecting seat 4.
The implementation principle of the building frame structure applying the damper in the embodiment of the application is as follows:
when the damping device 1 is applied to a frame structure of a building, the connecting seat 4 is welded on the frame beam 2, the first fixing rod 11 and the second fixing rod 12 which are far away from each other are welded on the frame column 3 or the frame beam 2, or the connecting seat 4 is suspended in the air, the first fixing rod 11 and the second fixing rod 12 which are far away from each other are welded on the frame column 3 or the frame beam 2, and the support rod 5 is welded on the other group of frame columns 3 or the frame beams 2 according to the damping effect of the frame structure of the building and the requirements of building functions.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. An unidirectional yield energy dissipation damper is characterized in that: including damping device (1), damping device (1) includes first dead lever (11) and second dead lever (12), be provided with buffer layer (13) between first dead lever (11) and second dead lever (12), buffer layer (13) are used for leading to the earthquake first dead lever (11) or the slip of second dead lever (12) to cushion.
2. An unidirectional yielding dissipative damper as claimed in claim 1, wherein: the buffer layer is characterized by further comprising a sleeve (14), the end parts, close to each other, of the first fixing rod (11) and the second fixing rod (12) are arranged in the sleeve (14) in a sliding mode, and the buffer layer (13) is arranged in the sleeve (14).
3. An unidirectional yielding dissipative damper as claimed in claim 2, wherein: the end parts, located in the sleeve (14), of the first fixing rod (11) and the second fixing rod (12) are respectively provided with a guide piece (15), and the guide pieces (15) enable the first fixing rod (11) and the second fixing rod (12) to be located on the same axis with the sleeve (14) in the sliding process.
4. A single direction yielding dissipative damper as claimed in claim 3, wherein: the guide piece (15) comprises disks (151) fixedly arranged on the ends, located in the sleeve (14), of the first fixing rod (11) and the second fixing rod (12), the peripheral wall of each disk (151) abuts against the inner wall of the sleeve (14), the disks (151) are arranged in the sleeve (14) in a sliding mode, and the buffer layer (13) is arranged between the disks (151) on the two sides.
5. An unidirectional yielding dissipative damper as claimed in claim 4, wherein: a blocking part (16) is arranged on the sleeve (14), and the blocking part (16) is used for preventing the disc (151) from being separated from the sleeve (14).
6. An unidirectional yielding dissipative damper as claimed in claim 5, wherein: the blocking piece (16) comprises blocking cylinders (161) which are annularly arranged on the inner wall of the sleeve (14) and located at two ends of the sleeve (14), and the surface, departing from the buffer layer (13), of the disc (151) is used for being abutted to the blocking cylinders (161).
7. An unidirectional yielding dissipative damper as claimed in claim 4, wherein: the buffer layer (13) comprises a flexible layer (131) which is arranged between the two disks (151) and is made of flexible filling materials, and the flexible filling materials are used for being extruded and deformed by the disks (151) to absorb impact energy borne by the first fixing rod (11) or the second fixing rod (12).
8. An unidirectional yielding dissipative damper as claimed in claim 1, wherein: the first fixing rod (11) is a metal rod made of a metal material; the second fixing rod (12) is a light buffer rod made of a light core material.
9. A building frame structure applying the damper, comprising the unidirectional yielding dissipative damper according to any of claims 1 to 8, wherein two damping devices (1) are provided, characterized in that: the damping device is characterized by further comprising a frame beam (2) and a frame column (3) which are used for installing the damping devices (1), wherein a second fixing rod (12) in one damping device (1) is connected with a first fixing rod (11) in the other damping device (1), the other first fixing rod (11) and the second fixing rod (12) in the two damping devices (1) are arranged on the frame beam (2) or the frame column (3), and an included angle between the two damping devices (1) is 1-180 degrees.
10. A building frame structure using the damper as set forth in claim 9, wherein: two be provided with bracing piece (5) on the tie point of damping device (1), the one end that bracing piece (5) deviates from damping device (1) sets up on frame roof beam (2) or frame post (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121409482.8U CN215330649U (en) | 2021-06-23 | 2021-06-23 | One-way yielding energy dissipation damper and building frame structure applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121409482.8U CN215330649U (en) | 2021-06-23 | 2021-06-23 | One-way yielding energy dissipation damper and building frame structure applying same |
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| Publication Number | Publication Date |
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| CN215330649U true CN215330649U (en) | 2021-12-28 |
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| CN202121409482.8U Active CN215330649U (en) | 2021-06-23 | 2021-06-23 | One-way yielding energy dissipation damper and building frame structure applying same |
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