CN114908895A - High-damping rubber friction damper - Google Patents
High-damping rubber friction damper Download PDFInfo
- Publication number
- CN114908895A CN114908895A CN202210794488.4A CN202210794488A CN114908895A CN 114908895 A CN114908895 A CN 114908895A CN 202210794488 A CN202210794488 A CN 202210794488A CN 114908895 A CN114908895 A CN 114908895A
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- Prior art keywords
- plate
- damping rubber
- friction
- steel plate
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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
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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
- E04H9/0237—Structural braces with damping devices
Abstract
The invention discloses a high-damping rubber friction damper which comprises a lower connecting plate and an upper connecting plate, wherein a conversion steel plate is welded in the middle of the top of the lower connecting plate, a plurality of groups of first connecting bolt holes are uniformly formed in the conversion steel plate, connecting bolts are connected with the inner threads of the first connecting bolt holes, restraining steel plates are connected with the outer threads of the connecting bolts through threads, and a plurality of groups of second connecting bolt holes are formed in the bottoms of the two groups of restraining steel plates. The composite energy-consuming damper is formed by effectively combining two energy-consuming materials, namely the high-damping rubber and the friction plate, and has the advantages of small sliding displacement, early yield, large ultimate deformation and large equivalent viscous damping ratio of the friction plate; the advantages of high-damping rubber material such as large ultimate bearing capacity and self-recovery capability are utilized, the advantages of two different energy-consuming materials are combined, and the characteristics of early yielding, large deformation and high bearing capacity of the compounded high-damping rubber friction damper can be realized.
Description
Technical Field
The invention relates to the technical field of energy dissipation and shock absorption of buildings, in particular to a high-damping rubber friction damper.
Background
The application field of the shock absorption and isolation technology of the building structure in China is greatly expanded, and a large number of building projects in domestic high-intensity defense areas and earthquake key monitoring and defense areas need to forcibly adopt the energy absorption, shock absorption and isolation technology.
The energy dissipation and shock absorption technology is widely popularized and applied in China in nearly ten years, various types of energy dissipation and shock absorption products are gradually put into the market, and the core of the energy dissipation and shock absorption technology is that earthquake energy is dissipated by the first deformation of a damper unit, so that the energy dissipation and shock absorption damper products have the characteristic of diversity based on the energy dissipation and shock absorption principle and the characteristics of various damping materials. From the multiple angles of the anti-seismic performance design target of the shock absorption project, the energy consumption efficiency of the damper, the applicability of different building structure types, the installation of the damper and the manufacturing cost, a replaceable composite shock absorption product which can give consideration to early yielding, high ductility, large deformation and high bearing capacity is developed to overcome the defect of single function of the conventional damper.
The applicant finds that the prior various energy dissipation and shock absorption technical products at least have the following technical problems:
1. the energy consumption materials and functions of most dampers are single, for example, the friction damper only consumes energy by using the friction resistance of a friction plate product, the friction force is constant, the bearing capacity of the friction damper is constant after the friction damper is subjected to sliding deformation, but the floor shearing force of the structure is increased by times along with the building under different earthquake levels of frequent earthquakes, fortification earthquakes and rare earthquakes, so that the energy consumption effect of the friction damper is gradually reduced along with the larger structural deformation; in addition, as a single rubber damper and a single viscoelastic damper, the damping force is smaller under small deformation, the rigidity after yielding and energy consumption is larger, the storage rigidity is larger, the equivalent viscous damping ratio is smaller than that of a friction damper, a viscous damper and the like, but the bearing capacity is higher under large deformation, and the self-resetting capability is realized.
2. In recent years, various composite dampers such as steel-lead dampers, lead rubber dampers and the like all utilize the characteristic of strong lead energy consumption capability, but lead and steel energy consumption materials in the steel-lead dampers are difficult to coordinately deform and connect and assemble; the lead rubber damper needs to be vulcanized at high temperature, the formed lead block is difficult to effectively assemble and fix in the damper, the coordination work of two energy-consuming materials in the large deformation process cannot be guaranteed, the processing technology is complex, and the manufacturing cost is high.
Disclosure of Invention
The invention aims to provide a high-damping rubber friction damper, which aims to solve the problems that the energy consumption capability of the damper is improved, the bearing capacity of a single friction damper cannot be improved after the single friction damper slips, the yield displacement of the single high-damping rubber is large, the yield load is low, the post-yield rigidity and the storage rigidity are large, and the equivalent viscous damping ratio is low in the background technology.
Technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a high-damping rubber friction damper comprises a lower connecting plate and an upper connecting plate, wherein a conversion steel plate is welded at the middle position of the top of the lower connecting plate, a plurality of groups of first connecting bolt holes are uniformly formed in the conversion steel plate, connecting bolts are connected with the inner threads of the first connecting bolt holes, the outer side of each connecting bolt is connected with a constraint steel plate in a threaded manner, a plurality of groups of second connecting bolt holes are formed in the bottom of the inner parts of two groups of constraint steel plates, pre-tightening bolt holes are formed in two ends of the inner top of each group of constraint steel plates, a high-damping rubber layer is arranged at the middle position of one side, close to each other, of the two groups of constraint steel plates, disc springs are arranged at two ends of the top of one side of each group of constraint steel plates, the inner threads of the pre-tightening bolt holes are connected with pre-tightening bolts, one side of each pre-tightening bolt penetrates through the inner parts of the disc springs, and a shearing steel plate is welded at the bottom of the upper connecting plate, the two ends of the top inside the shearing steel plate are provided with long hole grooves, the top of one side, close to each other, of each of the two groups of restraining steel plates is provided with a friction plate, the two groups of restraining steel plates are fixed on the two sides of the shearing steel plate respectively through pre-tightening bolts, and the high-damping rubber layer is located between the restraining steel plates and the shearing steel plates.
Preferably, the high-damping rubber layer is a composite rubber material, and a compounding agent is added into natural rubber in the composite rubber material.
Preferably, the high damping rubber layer is bonded between the shear energy consumption steel plate and the constraint steel plate through an adhesive under a high-temperature vulcanization measure.
Preferably, one side of the pretensioning bolt penetrates through the inside of the long hole groove, and one side of the pretensioning bolt penetrates through the inside of the two friction plates.
Preferably, the friction plate is of a flat plate structure, and the friction plate is arranged between the constraint steel plate and the shearing steel plate and is tightly attached to the constraint steel plate and the shearing steel plate.
Preferably, the top of the restraining steel plate, which is close to one side of the shearing steel plate, is provided with a groove, and the friction plate and the groove are matched with each other.
The invention provides a high-damping rubber friction damper, which has the following beneficial effects:
1. the composite energy-consuming damper is formed by effectively combining two energy-consuming materials, namely high-damping rubber and a friction plate, and has the advantages of small sliding displacement, early yield, large extreme deformation and large equivalent viscous damping ratio of the friction plate; the composite high-damping rubber friction damper has the characteristics of early yielding, large deformation and high bearing capacity by utilizing the advantages of high ultimate bearing capacity and self-recovery capacity of the high-damping rubber material and combining the advantages of two different energy-consuming materials, and can meet the high-performance target requirement of a damping structure according to performance design.
2. The bearing capacity of the friction unit in the high-damping rubber friction damper can be controlled through the pretightening force of the belleville spring and the high-strength bolt, and the friction force can be accurately controlled; the bearing capacity and the deformation of the high-damping rubber part can be controlled by the shear modulus and the glue layer thickness of the high-damping rubber layer, the deformation and the bearing capacity can be accurately calculated, the assembly process of the friction plate and the high-damping rubber material is simple, the high-damping rubber layer is formed in a specific grinding tool through high-temperature vulcanization, the friction plate, the pre-tightening bolt and the disc spring can be assembled and formed after passing through the pass, the large-scale production can be realized, the high-damping rubber friction damper is connected with the conversion steel plate through the connecting bolt, the production and the assembly are rapid, the rubber friction damper can be disassembled and replaced after an earthquake, and the rapid maintenance and the rapid recovery function after the earthquake can be realized.
Drawings
FIG. 1 is a front cross-sectional view of the present invention;
FIG. 2 is a side view of a shear steel plate of the present invention;
FIG. 3 is a side view of a transition steel plate of the present invention;
FIG. 4 is a side view of a restraint steel plate of the present invention;
fig. 5 is a side view of the present invention.
In the figure: 1. a lower connecting plate; 2. converting a steel plate; 3. a connecting bolt; 4. a high damping rubber layer; 5. restraining a steel plate; 6. a disc spring; 7. a friction plate; 8. shearing a steel plate; 9. an upper connecting plate; 10. pre-tightening the bolts; 11. a first connecting bolt hole; 12. pre-tightening the bolt holes; 13. a second connecting bolt hole; 14. a slot with a long hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1-5, the present invention provides a technical solution: a high-damping rubber friction damper comprises a lower connecting plate 1 and an upper connecting plate 9, wherein a conversion steel plate 2 is welded at the middle position of the top of the lower connecting plate 1, a plurality of groups of first connecting bolt holes 11 are uniformly arranged in the conversion steel plate 2, connecting bolts 3 are in threaded connection with the inner parts of the first connecting bolt holes 11, restraining steel plates 5 are in threaded connection with the outer sides of the connecting bolts 3, a plurality of groups of second connecting bolt holes 13 are formed in the bottom of the inner parts of the two groups of restraining steel plates 5, pre-tightening bolt holes 12 are formed in the two ends of the inner top of the two groups of restraining steel plates 5, a high-damping rubber layer 4 is arranged at the middle position of one side, close to each other, of the two groups of restraining steel plates 5, a disc spring 6 is arranged at the two ends of one side of one group of restraining steel plates 5, a pre-tightening bolt 10 is in threaded connection with the inner part of the pre-tightening bolt 10, a shearing steel plate 8 is welded at the bottom of the upper connecting plate 9, the both ends at the inside top of shearing steel sheet 8 have been seted up long hole groove 14, and the top that two sets of restraint steel sheets 5 are close to one side each other is provided with friction plate 7, and two sets of restraint steel sheets 5 are fixed respectively in the both sides of shearing steel sheet 8 through pretension bolt 10, and high damping rubber layer 4 is located between restraint steel sheet 5 and the shearing steel sheet 8.
As a preferable embodiment of the present embodiment: the high damping rubber layer 4 is made of composite rubber material, and the compounding agent is added into the natural rubber in the composite rubber material, so that the loss factor is increased, and the storage modulus is reduced.
As a preferable embodiment of the present embodiment: the high damping rubber layer 4 is bonded between the shearing energy consumption steel plate and the constraint steel plate through an adhesive under a high-temperature vulcanization measure, so that the high damping rubber layer 4 is connected more firmly.
As a preferable embodiment of the present embodiment: one side of the pretension bolt 10 penetrates through the inside of the long hole groove 14, and one side of the pretension bolt 10 penetrates through the inside of the two friction plates 7, so that the connection between the steel plate 5 and the shear steel plate 8 is restrained tightly.
As a preferable aspect of the present embodiment: the friction plate 7 is a flat plate structure, and the friction plate 7 is arranged between the constraint steel plate 5 and the shearing steel plate 8 and is tightly attached, and has a certain expected set friction coefficient.
As a preferable embodiment of the present embodiment: the top of the constraint steel plate 5 close to one side of the shearing steel plate 8 is provided with a groove, and the friction plate 7 is matched with the groove, so that the friction plate 7 can be quickly detached.
In the embodiment 1, as shown in fig. 1 to 5, the bearing capacity of the friction unit in the high damping rubber friction damper can be controlled by the pretightening force of the belleville spring 6 and the pretightening bolt 10, and the friction force can be accurately controlled; the bearing capacity and deformation of the high-damping rubber part can be controlled by the shear modulus and the glue layer thickness of the high-damping rubber layer 4, and the deformation and the bearing capacity can be accurately calculated.
In embodiment 2, as shown in fig. 1 to 5, the assembly process of the friction plate 7 and the high damping rubber material is simple, the high damping rubber layer 4 is formed in a specific grinding tool through high-temperature vulcanization, the friction plate 7, the pre-tightening bolt 10 and the belleville spring 6 can be assembled and formed after passing through the specific grinding tool, large-scale production can be achieved, the high damping rubber friction damper is connected with the conversion steel plate 2 through the connecting bolt 3, production and assembly are fast, and the high damping rubber friction damper can be detached and replaced after an earthquake, so that the functions of fast maintenance and fast recovery after the earthquake can be achieved.
The working principle is as follows: the composite energy-consuming damper is formed by effectively combining two energy-consuming materials, namely high-damping rubber and a friction plate 7, and has the advantages of small sliding displacement, early yield, large extreme deformation and large equivalent viscous damping ratio of the friction plate; the composite high-damping rubber friction damper has the characteristics of early yielding, large deformation and high bearing capacity by utilizing the advantages of high ultimate bearing capacity and self-recovery capacity of the high-damping rubber material and combining the advantages of two different energy-consuming materials, and can meet the high-performance target requirement of a damping structure according to performance design.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (6)
1. The utility model provides a high damping rubber friction damper, includes connecting plate (1) and upper junction plate (9) down, its characterized in that: the middle position of the top of the lower connecting plate (1) is welded with a conversion steel plate (2), a plurality of groups of first connecting bolt holes (11) are uniformly arranged in the conversion steel plate (2), the inner threads of the first connecting bolt holes (11) are connected with connecting bolts (3), the outer threads of the connecting bolts (3) are connected with restraining steel plates (5), a plurality of groups of second connecting bolt holes (13) are arranged at the bottom of the inner part of each of two groups of restraining steel plates (5), pre-tightening bolt holes (12) are arranged at two ends of the inner top of each of two groups of restraining steel plates (5), a high-damping rubber layer (4) is arranged at the middle position of one side, close to each other, of the two groups of restraining steel plates (5), disc springs (6) are arranged at two ends of the top of one side of one group of restraining steel plate (5), and pre-tightening bolts (10) are connected with the inner threads of the pre-tightening bolt holes (12), one side of pretension bolt (10) runs through the inside of belleville spring (6), the bottom welding of upper junction plate (9) has shearing steel sheet (8), long hole groove (14) have been seted up at the both ends at the inside top of shearing steel sheet (8), and are two sets of restraint steel sheet (5) are close to the top of one side each other and are provided with friction plate (7), and are two sets of restraint steel sheet (5) are fixed respectively in the both sides of shearing steel sheet (8) through pretension bolt (10), high damping rubber layer (4) are located between restraint steel sheet (5) and shearing steel sheet (8).
2. A high damping rubber friction damper as claimed in claim 1, characterized in that: the high-damping rubber layer (4) is made of composite rubber materials, and a compounding agent is added into natural rubber in the composite rubber materials.
3. A high damping rubber friction damper as claimed in claim 1, characterized in that: the high damping rubber layer (4) is bonded between the shearing energy consumption steel plate and the constraint steel plate through an adhesive under a high-temperature vulcanization measure.
4. A high damping rubber friction damper as claimed in claim 1, characterized in that: one side of the pre-tightening bolt (10) penetrates through the inside of the long hole groove (14), and one side of the pre-tightening bolt (10) penetrates through the inside of the two friction plates (7).
5. A high damping rubber friction damper as claimed in claim 1, characterized in that: the friction plate (7) is of a flat plate structure, and the friction plate (7) is arranged between the constraint steel plate (5) and the shearing steel plate (8) and is tightly attached to the constraint steel plate.
6. A high damping rubber friction damper as claimed in claim 1, characterized in that: the top of one side, close to the shearing steel plate (8), of the restraint steel plate (5) is provided with a groove, and the friction plate (7) is matched with the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210794488.4A CN114908895A (en) | 2022-07-07 | 2022-07-07 | High-damping rubber friction damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210794488.4A CN114908895A (en) | 2022-07-07 | 2022-07-07 | High-damping rubber friction damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114908895A true CN114908895A (en) | 2022-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210794488.4A Pending CN114908895A (en) | 2022-07-07 | 2022-07-07 | High-damping rubber friction damper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370033A (en) * | 2022-09-23 | 2022-11-22 | 北京固力同创工程科技有限公司 | Friction damper with integrated earthquake damage monitoring and friction damper monitoring system |
-
2022
- 2022-07-07 CN CN202210794488.4A patent/CN114908895A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370033A (en) * | 2022-09-23 | 2022-11-22 | 北京固力同创工程科技有限公司 | Friction damper with integrated earthquake damage monitoring and friction damper monitoring system |
| CN115370033B (en) * | 2022-09-23 | 2024-03-29 | 北京固力同创工程科技有限公司 | Friction damper with integrated vibration damage monitoring function and friction damper monitoring system |
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