CN110670935A - Damage controllable energy dissipater - Google Patents
Damage controllable energy dissipater Download PDFInfo
- Publication number
- CN110670935A CN110670935A CN201910881094.0A CN201910881094A CN110670935A CN 110670935 A CN110670935 A CN 110670935A CN 201910881094 A CN201910881094 A CN 201910881094A CN 110670935 A CN110670935 A CN 110670935A
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- Prior art keywords
- friction
- lug plate
- yielding
- sliding
- damage
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Classifications
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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
Abstract
The invention discloses an energy dissipater with controllable damage, which comprises an extrusion rotating piece, a deformable connecting rod, friction energy dissipation pieces and a bottom plate, wherein a sliding groove is formed in the upper part of the extrusion rotating piece, the sliding piece is connected in the sliding groove, the lower part of the extrusion rotating piece is connected with a first friction lug plate and a first yielding lug plate, a second friction lug plate and a second yielding lug plate are connected on the bottom plate, the first friction lug plate and the second friction lug plate are hinged through a first pin shaft, one end of the first pin shaft, penetrating through the first friction lug plate and the second friction lug plate, is provided with an elastic element and then is locked by a locking nut, the friction energy dissipation pieces are clamped between the first friction lug plate and the second friction lug plate, one end of the deformable connecting rod is hinged with the first yielding lug plate through the second pin shaft, and the other end of the deformable connecting rod is hinged with the second yielding lug plate through the second pin shaft. The invention can fully play the energy consumption and shock absorption roles, effectively control the damage development degree of the energy dissipater and ensure the energy consumption and shock absorption effects of the energy dissipater.
Description
Technical Field
The invention relates to the technical field of earthquake resistance and disaster prevention of building structures, in particular to a damage-controllable energy dissipater.
Background
The energy dissipater is an anti-seismic device arranged in a building structure for improving the anti-seismic performance of a building, the existing building mostly adopts a displacement-related damper, such as a friction damper or a metal yielding damper, but the friction damper consumes energy earlier, the sliding displacement of the friction damper is generally less than 0.5mm, the metal yielding damper can dissipate energy only after yielding to play a role in shock absorption, and the yield deformation of the metal yielding damper is greater than that of the friction damper, so that the metal yielding damper cannot play a role in energy dissipation under weak shock. Therefore, the existing damper cannot fully play the energy dissipation and shock absorption functions under different vibration strengths, and in addition, the existing displacement-related damper is easy to be damaged due to extreme deformation, so that the shock absorption effect is influenced.
Disclosure of Invention
The invention aims to provide an energy dissipater with controllable damage, which can fully play the energy dissipation and shock absorption functions according to the change of vibration strength, effectively control the damage development degree of the energy dissipater and ensure the energy dissipation and shock absorption effects of the energy dissipater.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
an energy dissipater with controllable damage comprises an extrusion rotating piece, a deformable connecting rod, friction energy dissipation pieces and a bottom plate, wherein a sliding groove is formed in the upper portion of the extrusion rotating piece, a sliding piece is connected in the sliding groove, the sliding piece can slide along the inner wall of the sliding groove and can slide out of the sliding groove when the extrusion rotating piece rotates to a set angle, a first friction lug plate and a first yielding lug plate are connected to the lower portion of the extrusion rotating piece, a second friction lug plate and a second yielding lug plate are connected to the bottom plate, the first friction lug plate and the second friction lug plate are hinged through a first pin shaft, one end, penetrating out of the first friction lug plate and the second friction lug plate, of the first pin shaft is locked by a locking nut after penetrating through an elastic element, the friction energy dissipation pieces are clamped between the first friction lug plate and the second friction lug plate, one end of the deformable connecting rod is hinged with the first yielding lug plate through a second pin shaft, the other end is also hinged with a second yielding lug plate through a second pin shaft.
In one embodiment, a sliding part is arranged on the sliding piece, the sliding part is trapezoidal or arc-shaped, and the shape of the sliding groove is matched with that of the trapezoidal sliding part.
In one embodiment, the sliding member includes a top plate located outside the sliding groove, and the sliding part is connected to the top plate.
In one embodiment, the deformable linkage is an arcuate metal rod.
In one embodiment, the first friction lug, the second friction lug and the friction energy dissipation piece form a friction energy dissipation part, the first yielding lug, the second yielding lug and the deformable connecting rod form a yielding energy dissipation part, and the energy dissipater comprises a plurality of yielding energy dissipation parts, and the yielding energy dissipation parts surround the friction energy dissipation part.
In one embodiment, the distance from each yielding energy dissipation part to the friction energy dissipation part is the same.
In one embodiment, the lower part of the extrusion rotating part is connected with two first friction lug plates, and the second friction lug plate is inserted between the two first friction lug plates and then hinged by the first pin shaft.
In one embodiment, the resilient element is a disc spring.
The invention has the following beneficial effects: the damage controllable energy dissipater can fully play the energy dissipation and shock absorption functions according to the change of the vibration strength; the damage development degree of the energy dissipater is effectively controlled, the low-cycle fatigue performance of the energy dissipater is improved, and the energy dissipation capability of the energy dissipater is fully exerted.
Drawings
FIG. 1 is a front view of a damage-controlled energy consumer of the present invention;
FIG. 2 is a side view of the energy consumer shown in FIG. 1;
in the figure: 1. the friction energy dissipation device comprises a bottom plate, 2, friction energy dissipation pieces, 3, a deformable connecting rod, 4, an extrusion rotating piece, 41, a sliding groove, 5, a sliding piece, 51, a top plate, 52, a sliding portion, 6, a first friction lug plate, 7, a second friction lug plate, 8, a first yielding lug plate, 9, a second yielding lug plate, 10, a first pin shaft, 11, a second pin shaft 12, an elastic element, 13 and a locking nut.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
As shown in fig. 1-2, the present embodiment discloses a damage-controllable energy dissipater, which includes an extruding and rotating member 4, a deformable connecting rod 3, a friction energy dissipation sheet 2 and a bottom plate 1, wherein a sliding groove 41 is disposed on an upper portion of the extruding and rotating member 4, a sliding member 5 is connected in the sliding groove 41, the sliding member 5 can slide along an inner wall of the sliding groove 41 and can slide out of the sliding groove 41 when the extruding and rotating member 4 rotates to a set angle to control damage of the energy dissipater, thereby preventing the deformable connecting rod 3 from being damaged due to the fact that the extruding and rotating member 4 exceeds a deflection limit to cause failure of the energy.
The lower part of the extrusion rotating piece 4 is connected with a first friction lug plate 6 and a first yielding lug plate 8, the bottom plate 1 is connected with a second friction lug plate 7 and a second yielding lug plate 9, the first friction lug plate 6 and the second friction lug plate 7 are hinged through a first pin shaft 10, a friction energy dissipation piece 2 is clamped between the first friction lug plate 6 and the second friction lug plate 7, namely the friction energy dissipation piece 2 is clamped between the first friction lug plate 6 and the second friction lug plate 7, one end of the deformable connecting rod 3 is hinged with the first yielding lug plate 9 through a second pin shaft 11, and the other end of the deformable connecting rod is hinged with the second yielding lug plate 9 through another second pin shaft 11;
the two ends of the deformable connecting rod 3 are hinged to avoid direct welding and fixing, so that the rigid impact at the two ends of the deformable connecting rod 3 can be reduced, the direct damage or breakage caused by local rigid impact can be avoided, and the deformable connecting rod 3 can be ensured to be effectively deformed to absorb vibration energy; meanwhile, the rotating sensitivity of the extrusion rotating piece 4 is improved, so that the extrusion rotating piece 4 can deflect to a certain extent under the action of slight vibration;
when the sliding piece 5 is horizontally extruded or pushed, the extrusion rotating piece 4 is driven to rotate, so that the first friction lug plate 6 rotates relative to the second friction lug plate 7, and the first friction lug plate 6, the second friction lug plate 7 and the friction energy dissipation piece 2 are both rubbed to dissipate the energy of structural vibration; and the deformable links 3 serve to absorb a large amount of vibration energy by undergoing plastic hysteresis deformation in the event of a shock.
One end of the first pin shaft 10, which penetrates through the first friction lug plate 6 and the second friction lug plate 7, is provided with an elastic element 12 in a penetrating way and then is locked by a locking nut 13; through the setting of elastic element 12, can make and keep certain pretightning force between friction otic placode and the friction power consumption piece 2 all the time, even lock nut 13 takes place certain slip displacement, elastic element 12 also can be through taking place elastic deformation and keeping above-mentioned pretightning force to make friction power consumption piece 2 can effectively exert the friction power consumption effect.
In one embodiment, the elastic element 12 may be a disc spring, which has a large rigidity and requires a small space, and can bear a large load with a small deformation and store a large elastic potential energy with a small deformation.
It will be appreciated that the resilient member 12 may also be a cylindrical compression spring.
In one embodiment, the sliding member 5 is provided with a sliding portion 52, the sliding portion 52 is trapezoidal or arc-shaped, the shape of the sliding groove 41 is adapted to the shape of the sliding portion 52, that is, the sliding groove 41 is also trapezoidal or arc-shaped corresponding to the sliding portion 52, so that the sliding portion 52 can slide in the sliding groove 41 under the action of horizontal extrusion force or thrust force to drive the pressing and rotating member 4 to deflect, and meanwhile, the sliding member 5 can smoothly slide out of the sliding groove 41 when the pressing and rotating member 4 rotates to a set angle, thereby avoiding the deformation link 3 from being damaged due to the fact that the pressing and rotating member 4 exceeds a deflection limit to cause failure of the energy dissipater.
Further, the sliding part 52 can be an isosceles trapezoid, so as to realize bidirectional sliding and improve the anti-vibration effect thereof.
In one embodiment, the sliding member 5 includes a top plate 51 located outside the sliding groove 41, and a sliding portion 52 is connected to the top plate 51. The provision of the outer roof 51 further facilitates the provision of the point of application of the external force.
In one embodiment, the deformable connecting rod 3 is an arc-shaped metal rod, so that the plastic deformation effect is good, and larger vibration energy can be consumed.
It will be appreciated that the deformable links 3 may also be implemented as bent telescopic members or other elastic members.
The first friction lug plate 6, the second friction lug plate 7 and the friction energy dissipation piece 2 form a friction energy dissipation part, the first yielding lug plate 8, the second yielding lug plate 9 and the deformable connecting rod 3 form a yielding energy dissipation part, the friction energy dissipation part utilizes friction to achieve energy dissipation and vibration reduction, and the yielding energy dissipation part utilizes yielding deformation of the deformable connecting rod 3 to achieve energy dissipation and vibration reduction.
In one embodiment, the energy dissipater includes a plurality of yielding energy dissipation parts surrounding the outer portion of the friction energy dissipation part to enhance the energy dissipation and vibration reduction effects.
In one embodiment, the distance from each yielding energy dissipation part to the friction energy dissipation part is the same, for example, two yielding energy dissipation parts are respectively arranged on two sides of the friction energy dissipation part, and the yielding energy dissipation parts on the two sides of the friction energy dissipation part are symmetrically arranged to enhance the energy dissipation effect.
In one embodiment, the lower portion of the extrusion rotating member 4 is connected with two first friction lug plates 6, and the second friction lug plate 7 is inserted between the two first friction lug plates 6 and then hinged through a first pin shaft 10, so that the connection stability is improved, meanwhile, because the friction energy dissipation pieces 2 are clamped between the first friction lug plates 6 and the second friction lug plates 7, the friction energy dissipation pieces 2 are arranged on two sides of the second friction lug plates 7, and the friction energy dissipation effect is enhanced.
In one embodiment, the bottom plate 1, the rotatable extrusion member 4, and the top plate 51 are made of steel plates, the second friction lug 7 and the second yielding lug 9 are welded to the bottom plate 1, and the first friction lug 6 and the first yielding lug 8 are welded to the rotatable extrusion member 4.
The damping principle of the damage-controllable energy dissipater of the embodiment is as follows: when taking place vibrations, horizontal vibration power promotes sliding 5 and slides in the recess 41 that slides, thereby it takes place to deflect to drive extrusion rotation piece 4, thereby make friction power consumption piece 2, take place the friction between first friction otic placode 6 and the second friction otic placode 7 and dissipate the energy of structure vibration, when vibration power increases to certain extent, deformable connecting rod 3 takes place to warp and dissipates the structure vibration energy, deformable connecting rod 3 can also dissipate perpendicular vibration energy well, when extrusion rotation piece 4 deflects to the extreme angle, sliding 5 slides in the recess 41 that slides, guarantee that extrusion rotation piece 4 can not deflect excessively and cause the damage of deformable connecting rod 3, thereby the damage of effective control power consumer.
According to the energy dissipater with controllable damage, the horizontal motion is converted into the deflection motion by extruding the rotating piece 4, and the rotation friction energy dissipation and the bending yield energy dissipation are combined, wherein the friction energy dissipation is performed first, and the yield deformation energy dissipation is performed later, so that the energy dissipater can fully play the energy dissipation and shock absorption functions according to the change of the vibration strength; in addition, the limitation of the maximum value of the rotation angle of the extrusion rotating part 4 is realized by controlling the horizontal sliding stroke of the sliding part 52, the maximum deformation value of the energy consumption unit is not more than a set value, so that the damage development degree of the energy consumption device is controlled, the low-cycle fatigue performance of the energy consumption device is improved, and the energy consumption capacity of the energy consumption device is fully exerted; the whole structure adopts modular assembly, and is beneficial to assembly, disassembly, maintenance and replacement.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (8)
1. The controllable-damage energy dissipater is characterized by comprising an extrusion rotating piece, a deformable connecting rod, friction energy dissipation pieces and a bottom plate, wherein a sliding groove is formed in the upper portion of the extrusion rotating piece, a sliding piece is connected in the sliding groove and can slide along the inner wall of the sliding groove and slide out of the sliding groove when the extrusion rotating piece rotates to a set angle, a first friction lug plate and a first yielding lug plate are connected to the lower portion of the extrusion rotating piece, a second friction lug plate and a second yielding lug plate are connected to the bottom plate, the first friction lug plate and the second friction lug plate are hinged through a first pin shaft, one end, penetrating out of the first friction lug plate and the second friction lug plate, of the first pin shaft is locked by a locking nut after penetrating through an elastic element, and the friction energy dissipation pieces are clamped between the first friction lug plate and the second friction lug plate, one end of the deformable connecting rod is hinged with the first yielding lug plate through a second pin shaft, and the other end of the deformable connecting rod is hinged with the second yielding lug plate through the second pin shaft.
2. The energy consumption device with controllable damage as claimed in claim 1, wherein the sliding member is provided with a sliding portion, the sliding portion is trapezoidal or arc-shaped, and the shape of the sliding groove is adapted to the shape of the trapezoidal sliding portion.
3. A damage-controlled energy dissipator as claimed in claim 2, wherein said sliding member comprises a top plate located outside said sliding recess, said top plate having said sliding portion attached thereto.
4. A damage-controlled dissipative element according to claim 1, wherein said deformable connecting rod is an arc-shaped metal rod.
5. A damage-controlled energy dissipator as claimed in claim 1, wherein said first friction lug, said second friction lug and said friction dissipating member form a friction dissipating member, said first yielding lug, said second yielding lug and said deformable linkage form a yielding dissipating member, said dissipator including a plurality of said yielding dissipating members, said plurality of said yielding dissipating members surrounding an outer portion of said friction dissipating member.
6. A damage-controlled dissipative element according to claim 5, wherein the distance from each yielding dissipative element to the friction dissipative element is the same.
7. The controlled-damage dissipative element according to claim 1, wherein two of said first friction lugs are connected to the lower portion of said rotatable extrusion member, and said second friction lug is inserted between said first friction lugs and then hinged by said first pin.
8. A damage-controlled dissipative element according to claim 1, wherein said resilient element is a disc spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910881094.0A CN110670935A (en) | 2019-09-18 | 2019-09-18 | Damage controllable energy dissipater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910881094.0A CN110670935A (en) | 2019-09-18 | 2019-09-18 | Damage controllable energy dissipater |
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| CN110670935A true CN110670935A (en) | 2020-01-10 |
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| CN201910881094.0A Pending CN110670935A (en) | 2019-09-18 | 2019-09-18 | Damage controllable energy dissipater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095833A (en) * | 2020-09-30 | 2020-12-18 | 中南大学 | Variable-rigidity friction damper |
| CN115288317A (en) * | 2022-09-02 | 2022-11-04 | 中建工程产业技术研究院有限公司 | Metal and rotational friction composite damper |
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Application publication date: 20200110 |