CN114150915B - Shearing-friction coupling energy dissipation damper - Google Patents
Shearing-friction coupling energy dissipation damper Download PDFInfo
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- CN114150915B CN114150915B CN202111536728.2A CN202111536728A CN114150915B CN 114150915 B CN114150915 B CN 114150915B CN 202111536728 A CN202111536728 A CN 202111536728A CN 114150915 B CN114150915 B CN 114150915B
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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
- 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
- E04H9/0237—Structural braces with damping devices
Abstract
The invention discloses a shearing-friction coupling energy dissipation damper, which comprises a slotted main plate and a connecting plate, wherein the slotted main plate and the connecting plate are positioned in an intermediate layer; the friction plate and the first steel base plate are positioned on the secondary outer layer; an outer cover steel plate positioned at the outermost layer; the damper is installed and fixed to form a whole through bolts. When the steel rib bending shear device is acted by external force, the slotted main plate slides relative to the friction plate to generate friction energy consumption, and meanwhile, the steel rib is subjected to bending shear deformation to generate bending shear energy consumption. The shearing-friction coupling energy consumption damper combines shearing energy consumption and friction energy consumption, and solves the problems that the traditional friction damper is single in friction force and cannot meet the requirements of large and small earthquake energy consumption. After the metal shearing energy consumption is invalid, the friction energy consumption can be continuously provided, and the safety redundancy of the whole structure is improved. All plates and bolts in the damper can be replaced quickly, so that the damper can be repaired quickly after an earthquake, and the building function can be restored quickly.
Description
Technical Field
The invention relates to the technical field of energy dissipation dampers, in particular to a shear-friction coupling energy dissipation damper.
Background
The earthquake seriously affects the survival and development of human beings since ancient times, the time, the place and the intensity of the earthquake have great randomness and unpredictability, people cannot prevent the earthquake and only can prevent the earthquake by means of own technical means, thereby reducing various losses brought by the earthquake. The earthquake resisting effect is achieved according to the traditional earthquake resisting methods of enhancing the strength, rigidity, ductility and the like of the structure, so that the construction cost is directly increased, and the structure is not easy to repair due to damage under the action of strong earthquake. The structure is provided with the shock absorption devices (such as dampers and shock insulation pads), the shock absorption devices are reasonably and effectively resistant to shock through energy consumption modes such as friction, bending, elastic-plastic hysteresis deformation and the like, the structure and the arranged shock absorption devices jointly bear the action of the earthquake, so that the shock absorption devices dissipate the energy input by the earthquake before the structure, and if the earthquake energy is too large, the structure is damaged before the structure is damaged, thereby reducing the damage of the main body structure and achieving the purpose of shock absorption.
The damper mainly comprises a metal damper, a friction damper and the like, and can provide energy consumption capacity and earthquake energy for the structure. Research results of multiple students show that the energy consumption capability of a building structure can be improved by arranging the metal damper. However, the energy dissipating capacity of the structure will also deteriorate immediately after the metal damper fails. The metal damper, such as a buckling restrained damper and a steel groove damper, can improve the rigidity of the main body structure, but after the energy dissipation element is damaged, the metal damper also completely fails, and cannot continuously dissipate the seismic energy, namely, only a single energy dissipation source exists. The conventional friction damper has the advantages of simple structure, strong energy consumption capability, low manufacturing cost and the like, but the sliding friction force of the conventional friction damper is kept unchanged, so that the energy consumption requirements of small earthquakes and large earthquakes cannot be met, and meanwhile, the friction damper without secondary rigidity cannot improve the structural rigidity of a main body, so that the structure is easily damaged by a weak layer.
Although the problem of single energy consumption of the conventional friction energy dissipater and a metal damper is solved in the conventional metal shearing friction composite energy dissipater disclosed by the patent CN201910374319.3, the friction energy dissipation device cannot continuously provide friction energy consumption after the metal damper is damaged.
Disclosure of Invention
In order to solve the problems of single energy consumption and no secondary rigidity of the existing damper, the invention aims to provide a shearing-friction coupling energy consumption damper which has two energy consumption modes of bending shearing and friction, simultaneously considers the energy consumption requirements of small earthquake and large earthquake and provides secondary rigidity.
The technical scheme adopted by the invention is as follows: there is provided a shear-friction coupled dissipative damper, comprising:
the slotted main plate and the connecting plate are positioned in the middle layer;
the friction plate and the first steel base plate are positioned on the secondary outer layer;
an outer cover steel plate positioned at the outermost layer;
the slotted main plate is sequentially provided with a long round hole along the stress direction, a steel rib perpendicular to the stress direction and mounting holes from the middle to two sides;
the friction plates are positioned on two sides of the long round hole, and a second round hole is formed in the position, corresponding to the long round hole, of each friction plate; the first steel base plate is positioned on two sides of the mounting hole, and a third round hole is formed in the position, corresponding to the mounting hole, of the first steel base plate; a fifth round hole is formed in the connecting plate;
a middle round hole is formed in the position, corresponding to the second round hole, of the outer cover steel plate, a first round hole is formed in the position, corresponding to the fifth round hole, of the outer cover steel plate, and an end round hole is formed in the position, corresponding to the third round hole, of the outer cover steel plate;
the corresponding holes are installed and fixed by bolts to form a whole; when the steel rib bending shear device is under the action of external force, the slotted main plate slides relative to the friction plate to generate friction energy consumption, and meanwhile, the steel rib is subjected to bending shear deformation to generate bending shear energy consumption.
Preferably, the thickness of the connecting plate is equal to the gap between the two outer cover steel plates.
Preferably, the connecting plate further comprises a second steel base plate, the second steel base plate is located on two sides of the connecting plate, and a fourth round hole is formed in the position, corresponding to the fifth round hole, of the second steel base plate.
Preferably, the outer cover steel plate is made of Q235-grade steel.
Preferably, the material of the friction plate is brass, carbon fiber or NAO material.
Preferably, the mounting hole is a round hole, and the diameter of the round hole is equal to the diameter of the bolt.
Preferably, the mounting hole is a waist hole, and the length direction of the waist hole is consistent with the length direction of the long round hole.
Preferably, the bolts for connecting the outer cover steel plate, the friction plate and the slotted main plate are high-strength bolts; the bolts for connecting the outer cover steel plate and the connecting plate are high-strength bolts; and bolts for connecting the outer cover steel plate, the first steel base plate and the slotted main plate are common bolts.
Preferably, the high-strength bolt and the common bolt are both half-thread bolts, no thread exists in the thickness range of each hole wall, and the threads are prevented from contacting the hole walls and being buckled.
Preferably, a disk washer or a spring washer is disposed at the high-strength bolt.
The invention has the beneficial effects that:
(1) the shearing-friction coupling energy consumption damper combines shearing energy consumption and friction energy consumption, and solves the problems that the traditional friction damper is single in friction force and cannot meet the requirements of large and small earthquake energy consumption.
(2) According to the shearing-friction coupling energy consumption damper, shearing energy consumption and friction energy consumption are combined, friction energy consumption can be continuously provided after metal shearing energy consumption fails, and the safety redundancy of the whole structure is improved.
(3) According to the shearing-friction coupling energy dissipation damper, all plates and bolts can be quickly replaced, quick repair after an earthquake is facilitated, and quick recovery of building functions is realized.
Drawings
Fig. 1 is a schematic structural diagram of a shear-friction coupling dissipative damper disclosed by the invention.
Fig. 2 is an exploded view of the disclosed shear-friction coupled dissipative damper.
Fig. 3 is a schematic structural diagram of a slotted motherboard disclosed in the present invention.
Fig. 4 is a schematic structural view of another slotted main plate disclosed in the present invention.
Fig. 5 is a schematic structural diagram of a friction plate disclosed in the present invention.
Fig. 6 is a schematic structural view of the first steel shim plate disclosed by the invention.
Fig. 7 is a schematic structural diagram of the connecting plate disclosed by the invention.
Fig. 8 is a schematic structural view of a second steel shim plate disclosed in the present invention.
Fig. 9 is a schematic structural diagram of an outer cover steel plate disclosed by the invention.
Reference numerals: 1. an outer cover steel plate; 101. an end circular hole; 102. a middle circular hole; 103. a first circular hole; 2. a friction plate; 201. a second circular hole; 3. slotting the main board; 301. a long round hole; 302. a steel rib; 303. mounting holes; 4. a first steel backing plate; 401. a third circular hole; 5. a second steel shim plate; 501. a fourth circular hole; 6. a connecting plate; 601. a fifth circular hole; 7. a first high-strength bolt; 8. a second high-strength bolt; 9. and (4) common bolts.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings, but embodiments of the present invention are not limited thereto.
Example 1:
referring to fig. 1-2, the present embodiment discloses a shear-friction coupling energy dissipation damper, which includes an outer cover steel plate 1, a friction plate 2, a slotted main plate 3, a first steel backing plate 4, a connecting plate 6, a first high-strength bolt 7, a second high-strength bolt 8, and a common bolt 9.
The positional relationship of the structures is as follows: the slotted main plate 3 and the connecting plate 6 are positioned in the middle layer, the friction plate 2 and the first steel backing plate 4 are positioned on the secondary outer layer, and the outer cover steel plate 1 is positioned on the outermost layer to form a five-layer structure.
Referring to fig. 3-4, the slotted main plate 3 is provided with an oblong hole 301 along a force-bearing direction, a steel rib 302 perpendicular to the force-bearing direction, and a mounting hole 303 in sequence from the middle to both sides. Specifically, the mounting hole 303 may have two forms, the first form being: the mounting hole 303 is a round hole, the diameter of the hole is equal to the diameter of the bolt, when the mounting hole receives an external force, the first steel base plate 4 and the slotted main plate 3 do not generate relative friction, and the external force directly acts on the steel rib. The second form is: the mounting hole 303 is a waist hole, and the length direction of the waist hole is consistent with that of the long round hole 301. The slotted main plate 3 and the first steel backing plate 4 generate relative friction energy consumption firstly, and when the displacement reaches a critical value to enable the common bolt to contact the wall of the hole inside the waist hole, the steel rib 302 yields, so that the effect of bending shear energy consumption lag is achieved. The slotted main plate 3 is made of low-carbon steel with good ductility, and the strength of the slotted main plate is determined according to actual bearing capacity requirements.
Referring to fig. 5, the friction plates 2 are located at two sides of the oblong hole 301, and a second round hole 201 is formed in the friction plate 2 corresponding to the oblong hole 301. Preferably, the material of the friction plate 2 is brass, carbon fiber or NAO material.
Referring to fig. 6, in the embodiment, there are four first steel shim plates 4, the first steel shim plates 4 are located at two sides of the mounting hole 303, and a third circular hole 401 is formed in a position of the first steel shim plate 4 corresponding to the mounting hole 303.
Referring to fig. 7, a fifth circular hole 601 is formed in the connecting plate 6, and specifically, the thickness of the connecting plate 6 is equal to the distance between the two outer cover steel plates 1. In other embodiments, the damper of the present invention further includes a second steel pad plate 5, the second steel pad plate 5 is provided with a fourth circular hole 501 corresponding to the fifth circular hole 601, and the sum of the thicknesses of the second steel pad plate 5 and the connecting plate 6 is equal to the distance between the two outer cover steel plates 1. The bearing capacity of the hole wall of the connecting plate 6 is larger than the sum of the friction force and the yield force of the steel rib 302 calculated in theory.
Referring to fig. 9, a middle circular hole 102 is formed at a position of the outer cover steel plate 1 corresponding to the second circular hole 201, a first circular hole 103 is formed at a position of the outer cover steel plate 1 corresponding to the fifth circular hole 601, and an end circular hole 101 is formed at a position of the outer cover steel plate 1 corresponding to the third circular hole 401. Preferably, the outer cover steel plate 1 is made of a Q235 grade steel material.
The damper of the invention is installed in the following way: the corresponding holes are installed and fixed by bolts to form a whole. Specifically, in the embodiment, two first high-strength bolts 7 sequentially penetrate through the middle round hole in the outer cover steel plate 1 on one side, the second round hole 201 in the friction plate 2 on one side, the long round hole 301 in the slotted main plate 3, the second round hole 201 in the friction plate 2 on the other side, and the middle round hole in the outer cover steel plate 1 on the other side. A second high-strength bolt 8 is adopted to sequentially penetrate through the first round hole 103 on the outer cover steel plate 1 on one side, the fourth round hole 501 on the second steel backing plate 5 on one side, the fifth round hole on the connecting plate 6, the fourth round hole 501 on the second steel backing plate 5 on the other side and the first round hole 103 on the outer cover steel plate 1 on the other side. Six common bolts 9 sequentially penetrate through the end round hole 101 in the outer cover steel plate 1 on one side, the third round hole 401 in the first steel backing plate 4 on one side, the mounting hole 303 in the slotted main plate 3, the third round hole 401 in the first steel backing plate 4 on the other side and the end round hole 101 in the outer cover steel plate 1 on the other side. Preferably, the first high-strength bolt 7, the second high-strength bolt 8 and the common bolt 9 are all half-thread bolts, no thread exists in the thickness range of each hole wall, the threads are prevented from contacting the hole walls and buckling, and disc-shaped gaskets or spring gaskets are arranged at the first high-strength bolt 7 and the second high-strength bolt 8.
When the damper provided by the invention is acted by an external force, the slotted main plate 3 slides relative to the friction plate 2 to generate friction energy consumption, and meanwhile, the steel rib 302 generates bending shear deformation to generate bending shear energy consumption, so that the safety redundancy of the whole structure is improved, and the requirements of large and small vibration energy consumption can be met.
It should be noted that in the present invention, the positions and sizes of the holes formed in the outer cover steel plate 1, the friction plate 2, the slotted main plate 3, the first steel backing plate 4, the second steel backing plate 5, and the connecting plate 6 need to satisfy the regulations on the allowable values of the bolt-hole pitch, the edge pitch, and the end pitch in "steel structure design standards". The position and the size of the opening meet the design standard of a steel structure, and the early failure of the damper caused by the shearing damage of the plate can be prevented.
The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A shear-friction coupled dissipative damper, comprising:
the slotted main plate and the connecting plate are positioned in the middle layer;
the friction plate and the first steel base plate are positioned on the secondary outer layer;
an outer cover steel plate positioned at the outermost layer;
the slotted main plate is sequentially provided with a long round hole along the stress direction, a steel rib perpendicular to the stress direction and mounting holes from the middle to two sides;
the friction plates are positioned on two sides of the long round hole, and a second round hole is formed in the position, corresponding to the long round hole, of each friction plate; the first steel base plate is positioned on two sides of the mounting hole, and a third round hole is formed in the position, corresponding to the mounting hole, of the first steel base plate; a fifth round hole is formed in the connecting plate;
a middle round hole is formed in the position, corresponding to the second round hole, of the outer cover steel plate, a first round hole is formed in the position, corresponding to the fifth round hole, of the outer cover steel plate, and an end round hole is formed in the position, corresponding to the third round hole, of the outer cover steel plate;
the bolts are used for installing and fixing the corresponding holes to form a whole; when the steel rib bending shear device is under the action of external force, the slotted main plate slides relative to the friction plate to generate friction energy consumption, and meanwhile, the steel rib is subjected to bending shear deformation to generate bending shear energy consumption.
2. The shear-friction coupled dissipative damper of claim 1, wherein the thickness of the connecting plate is equal to the gap between the two outer cover steel plates.
3. The shear-friction coupled dissipative damper according to claim 1, further comprising a second steel backing plate, wherein the second steel backing plate is located on both sides of the connecting plate, and a fourth circular hole is provided on the second steel backing plate corresponding to the fifth circular hole.
4. The shear-friction coupled dissipative damper according to claim 1, wherein said outer cover steel plate is made of Q235 grade steel.
5. A shear-friction coupled dissipative damper according to claim 1, wherein the material of the friction plates is brass, carbon fiber or NAO material.
6. The shear-friction coupled dissipative damper of claim 1, wherein the mounting hole is a round hole having a diameter equal to the bolt diameter.
7. The shear-friction coupled dissipative damper of claim 1, wherein the mounting hole is a waist hole, the length direction of the waist hole being aligned with the length direction of the oblong hole.
8. The shear-friction coupled energy dissipating damper according to claim 1, wherein the bolts connecting the outer cover steel plate, the friction plate, and the slotted main plate are high-strength bolts; the bolts for connecting the outer cover steel plate and the connecting plate are high-strength bolts; and bolts for connecting the outer cover steel plate, the first steel base plate and the slotted main plate are common bolts.
9. The shear-friction coupling energy dissipation damper as recited in claim 8, wherein the high-strength bolt and the normal bolt are both half-threaded bolts, and no thread is formed in the thickness range of each hole wall, so that the threads are prevented from being pressed and bent in contact with the hole walls.
10. The shear-friction coupled dissipative damper of claim 8, wherein a disc shim or a spring shim is provided at the high strength bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111536728.2A CN114150915B (en) | 2021-12-15 | 2021-12-15 | Shearing-friction coupling energy dissipation damper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111536728.2A CN114150915B (en) | 2021-12-15 | 2021-12-15 | Shearing-friction coupling energy dissipation damper |
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| CN114150915A CN114150915A (en) | 2022-03-08 |
| CN114150915B true CN114150915B (en) | 2022-08-19 |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5275230B2 (en) * | 2007-06-25 | 2013-08-28 | オイレス工業株式会社 | Damper device |
| CN102535669A (en) * | 2012-01-13 | 2012-07-04 | 大连理工大学 | Friction-metallic yielding energy consumption combined control damping device applied to shear wall connecting beam and control method thereof |
| CN106088382B (en) * | 2016-08-05 | 2019-06-04 | 华侨大学 | A kind of friction-mild steel composite damper |
| CN107476631B (en) * | 2017-06-09 | 2019-12-06 | 中国地震局工程力学研究所 | Bending shear separation control type assembled metal damper |
| CN110939210B (en) * | 2019-12-11 | 2021-04-30 | 北京工业大学 | Toggle damper with steel multi-stage yield and friction energy consumption |
| CN111664208A (en) * | 2020-06-09 | 2020-09-15 | 震安科技股份有限公司 | Axial type variable rigidity friction damper |
| CN213087101U (en) * | 2020-07-31 | 2021-04-30 | 上海史狄尔建筑减震科技有限公司 | Metal composite shearing damper |
| CN113187118A (en) * | 2021-05-11 | 2021-07-30 | 四川大学 | Friction-bending dual-function damper |
| CN113585849B (en) * | 2021-08-11 | 2022-07-26 | 四川大学 | Two-stage friction damper |
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