CN115478631A - Hybrid self-resetting damping device capable of realizing multistage limiting energy consumption and application thereof - Google Patents
Hybrid self-resetting damping device capable of realizing multistage limiting energy consumption and application thereof Download PDFInfo
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- CN115478631A CN115478631A CN202211367756.0A CN202211367756A CN115478631A CN 115478631 A CN115478631 A CN 115478631A CN 202211367756 A CN202211367756 A CN 202211367756A CN 115478631 A CN115478631 A CN 115478631A
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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
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Abstract
The invention provides a hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption and application thereof, wherein the damping device comprises a fixed support, a force transmission unit, a variable friction damping unit and an energy consumption damping unit, and the variable friction damping unit comprises a variable friction damper arranged on the fixed support; the energy consumption damping unit comprises an energy consumption damper arranged on the fixed support; the force transmission unit comprises a first force transmission mechanism and a second force transmission mechanism; the first force transmission mechanism is connected with the variable friction damping unit; the second force transmission mechanism is connected with the first force transmission mechanism in a sliding mode, the sliding stroke is limited within a set range, and the second force transmission mechanism is further connected with the energy consumption damping unit; the force transmission unit and the energy consumption damping unit can slide and deform relatively under the action of external force and recover after the external force is removed. The invention adopts a self-resetting structure, can recover the initial state after loading, reduces the structural damage caused by plastic deformation due to material fatigue, and has obvious effects on self-resetting and energy consumption.
Description
Technical Field
The invention relates to the technical field of structural seismic resistance, in particular to a hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption and application thereof.
Background
Earthquake disasters seriously threaten social and economic development and people's life and property safety, structural engineer plans to seek an efficient antidetonation structure to be applied to messenger's civil construction, among the industrial building, make it have good power consumption and from the reset ability, mostly realize power consumption absorbing effect through setting up elastic structure among the current antidetonation damping device, for example the chinese utility model patent of publication number "CN213065083U" discloses an efficient damping attenuator structure that antidetonation support was used, including attenuator sleeve and atress pole, the one end of atress pole is provided with fixed sliding block, the both ends of attenuator sleeve are provided with the spacing collar, be provided with first spring between two fixed sliding block, the other end of atress pole is provided with the spring retainer plate, the inside in spring groove is provided with the second spring, one side of spring retainer plate is provided with first rotation connecting piece, be connected with the connecting piece through rivet rotation on the first rotation connecting piece. The spring structure in the structure can realize certain buffering performance by stretching and compressing, but under the conditions of bearing larger load and long acting time, the spring material is likely to generate fatigue plastic deformation to cause that the spring material can not return to the initial state after the load is unloaded, so that the shock-resistant structure is damaged.
Disclosure of Invention
The present invention aims to address at least one of the above-mentioned deficiencies of the prior art. For example, one of the objectives of the present invention is to provide a hybrid self-resetting damping device capable of achieving multi-stage limiting energy consumption and an application thereof, so as to solve the problems that the anti-seismic structure in the prior art cannot achieve multi-stage energy consumption, and the structure is damaged due to the fact that plastic deformation is easily generated due to material fatigue after a large load is borne, thereby meeting the structural energy consumption requirement in a large earthquake.
In order to achieve the above object, one aspect of the present invention provides a hybrid self-resetting damping device capable of achieving multi-stage limiting energy consumption, including: the damping device comprises a fixed support, a force transmission unit, a variable friction damping unit and an energy consumption damping unit, wherein the variable friction damping unit comprises a plurality of variable friction dampers arranged on the fixed support; the energy dissipation damping unit comprises a plurality of energy dissipation dampers arranged on the fixed support; the force transmission unit comprises a first force transmission mechanism and a second force transmission mechanism; the first force transmission mechanism is connected with the variable friction damping unit; the second force transmission mechanism is connected with the first force transmission mechanism in a sliding mode, the sliding stroke is limited within a set range, and the second force transmission mechanism is further connected with the energy consumption damping unit.
Alternatively, the fixed bracket may include a first fixed end plate, a second fixed end plate, and a third fixed end plate connected in sequence, the first and third fixed end plates facing each other; the first fixed end plate and the third fixed end plate are both fixedly connected with at least one variable friction damper; the plurality of energy dissipation dampers are positioned in a space surrounded by the first, second and third fixed end plates and are respectively and fixedly connected with the first and third fixed end plates.
Alternatively, the number of the variable friction dampers may be 2,2, each of which is located outside the corresponding fixed end plate, and each of the variable friction dampers includes 1 fixed plate, 2 sliding plates, X first connecting members, and X elastic members, wherein the fixed plate is vertically fixed to the corresponding fixed end plate, and at least one plate surface of the fixed plate has a first friction structure; the fixing plate is provided with X first through holes; the two sliding plates are respectively positioned at two sides of the fixed plate and are tightly attached to the fixed plate, and under the condition that the plate surface of the fixed plate facing the two sliding plates is provided with a first friction structure, the plate surface facing the fixed plate is also provided with a second friction structure matched with the corresponding sliding plates; the sliding plate is provided with X second through holes, the first through holes and the second through holes are in one-to-one correspondence, and at least one of the first through holes and the second through holes is an oblong hole; the X first connecting pieces can respectively connect the fixed plate and the 2 sliding plates through the first type of through holes and the second type of through holes which are in corresponding relation; the X elastic pieces are respectively positioned between the X first connecting pieces and the at least one sliding plate.
Alternatively, both the first and second friction structures may comprise undulating surfaces.
Optionally, the first force transmission mechanism may be provided with Y third-type through holes, the second force transmission mechanism may be provided with Y fourth-type through holes, the third and fourth-type through holes are in one-to-one correspondence, the force transmission unit further includes Y second connecting members, and the second connecting members may respectively penetrate through the third and fourth-type through holes in a corresponding relationship to connect the first and second force transmission mechanisms; at least one of the third through hole and the fourth through hole is a long circular hole, and the first force transmission mechanism and the second force transmission mechanism can slide relatively under the action of external force.
Optionally, the energy-consuming damper may be a slit plate, and the slit plate is provided with a plurality of strain seams.
Alternatively, the shape of the strain seam may be diamond shaped.
Alternatively, the first force transmission mechanism may include a plurality of force transmission plates, a first force transmission side plate and a second force transmission side plate fixedly connected to two sides of the plurality of force transmission plates, and the first force transmission side plate and the second force transmission side plate are fixedly connected to the sliding plates of the 2 variable friction dampers, respectively.
Optionally, the number of the force transmission plates can be 1, and the plate surfaces of the force transmission plates are perpendicular to the plate surfaces of the first force transmission side plate and the second force transmission side plate to form an I-shaped structure; the first force transmission mechanism also comprises at least two force transmission angle plates; at least one force transmission angle plate is arranged at the joint of the force transmission plate and the first force transmission side plate and is fixedly connected with the force transmission plate and the first force transmission side plate; at least one force transmission angle plate is arranged at the joint of the force transmission plate and the second force transmission side plate and is fixedly connected with the force transmission plate and the second force transmission side plate.
The invention provides an application of a hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption in energy consumption and shock absorption, which can comprise that when the magnitude of the shock is less than or equal to a critical value, the damping device can utilize the variable friction damping unit to perform energy consumption and shock absorption, and when the magnitude of the shock is greater than the critical value, the damping device can further utilize the energy consumption damping unit to participate in the energy consumption and shock absorption so as to improve the energy consumption characteristic of the damping device under strong shock.
Compared with the prior art, the beneficial effects of the invention comprise at least one of the following:
1. the hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption adopts a unique self-resetting structural design, can realize the recovery to the initial state after bearing a load with higher strength, and can greatly reduce the structural damage caused by plastic deformation due to material fatigue.
2. The hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption has good energy consumption capacity and can be used for energy consumption and shock absorption in the anti-seismic field of structures and ocean engineering. The rhombic slotted plate energy dissipation damper and the variable friction damper in the damping device are mutually matched to realize multi-stage energy dissipation, the bearable load range is enlarged, the energy dissipation damper and the variable friction damper are convenient to assemble and replace, and assembly is facilitated, so that repair work and cost caused by structural damage can be reduced.
Drawings
The above and other objects and/or features of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:
fig. 1 is a perspective view showing a hybrid self-resetting damping device capable of realizing multi-stage limit power consumption according to exemplary embodiment 1 of the present invention.
Fig. 2 shows a top view of the hybrid self-resetting damping device capable of realizing multi-stage limit power consumption according to exemplary embodiment 1 of the present invention.
Fig. 3 shows an explosion diagram of a hybrid self-resetting damping device capable of realizing multi-stage limit power consumption according to exemplary embodiment 1 of the present invention.
Fig. 4 shows an explosion diagram of a variable friction damper in a hybrid self-resetting damping device capable of realizing multi-stage limit energy consumption according to exemplary embodiment 1 of the present invention.
Fig. 5 is a perspective view showing an energy consumption damper in the hybrid self-resetting damping device capable of realizing multi-stage limit energy consumption according to exemplary embodiment 1 of the present invention.
Fig. 6 is a perspective view showing a fixing bracket in a hybrid self-resetting damping device capable of realizing multi-stage limit power consumption according to exemplary embodiment 1 of the present invention.
Fig. 7 is a perspective view showing a force transmission plate in the hybrid self-resetting damping device capable of realizing multi-stage limit power consumption according to exemplary embodiment 1 of the present invention.
Fig. 8 is a perspective view showing a second force transmission mechanism in the hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption according to exemplary embodiment 1 of the invention.
Fig. 9 shows a hysteresis rule diagram of the hybrid self-resetting damping device capable of realizing multi-stage limit energy consumption according to exemplary embodiment 1 of the invention.
Description of the reference numerals:
1-a fixed support, 11-a first fixed end plate, 12-a second fixed end plate, 13-a third fixed end plate, 14-a stiffening rib;
2-variable friction damping unit, 21-variable friction damper, 211-fixed plate, 2111-first friction structure, 2112-first through hole, 212-sliding plate, 2121-second friction structure, 2122-second through hole, 213-first connecting piece, 214-elastic piece, 215-fixed ear plate;
3-a force transmission unit, 31-a first force transmission mechanism, 311-a force transmission plate, 3111-a third through hole, 312-a first force transmission side plate, 313-a second force transmission side plate, 314-a force transmission corner plate, 32-a second force transmission mechanism, 321-a force transmission rod, 3211-a fourth through hole and 33-a second connecting piece;
4-energy consumption damping unit, 41-energy consumption damper, 411-strain gap.
Detailed Description
Hereinafter, a hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption and an application thereof will be described in detail with reference to exemplary embodiments.
It should be noted that "first", "second", "third", "fourth", etc. are merely for convenience of description and for convenience of distinction, and are not to be construed as indicating or implying relative importance. "upper," "lower," "inner," "outer," "front," "rear," "left," and "right" are merely for convenience of description and relative positional or orientational relationships, and do not indicate or imply that the referenced components must have that particular orientation or position.
In the related art, the anti-seismic damping device can bear a certain load and realize the functions of energy dissipation and shock absorption, but under the conditions of large load application and long load acting time, the anti-seismic damping device can not return to the initial state after the load is unloaded due to the fact that the material is easy to generate plastic deformation due to fatigue, and therefore the problem of structural damage is caused.
The invention provides a hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption, which comprises a fixed support, a force transmission unit, a variable friction damping unit and an energy consumption damping unit, wherein the variable friction damping unit comprises a plurality of variable friction dampers arranged on the fixed support; the energy dissipation damping unit comprises a plurality of energy dissipation dampers arranged on the fixed support; the force transmission unit comprises a first force transmission mechanism and a second force transmission mechanism; the first transmission mechanism is connected with the variable friction damping unit; the second force transmission mechanism is connected with the first force transmission mechanism in a sliding mode, the sliding stroke is limited within a set range, and the second force transmission mechanism is further connected with the energy consumption damping unit; the force transmission unit can slide relative to the fixed support under the action of external force, and returns to an initial position after the external force is removed; the energy-consuming damping unit can deform under the action of external force and recover to the original shape after the external force is removed.
The hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption adopts a self-resetting structure design, can realize the recovery to the initial state after bearing a load with higher strength, can greatly reduce the structural damage caused by plastic deformation due to material fatigue, realizes multi-stage energy consumption by applying the mutual cooperation of the diamond slotted plate energy consumption damper and the variable friction damper in the device, improves the bearable load range, and has good energy consumption capacity.
Exemplary embodiment 1
The exemplary embodiment provides a hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption.
Fig. 1 is a perspective view showing a hybrid self-resetting damping device capable of realizing multi-stage limit energy consumption according to exemplary embodiment 1 of the present invention, fig. 2 is a plan view showing the hybrid self-resetting damping device capable of realizing multi-stage limit energy consumption according to exemplary embodiment 1 of the present invention, fig. 3 is an exploded view showing the hybrid self-resetting damping device capable of realizing multi-stage limit energy consumption according to exemplary embodiment 1 of the present invention, fig. 4 is an exploded view showing a friction-changing damper in the hybrid self-resetting damping device capable of realizing multi-stage limit energy consumption according to exemplary embodiment 1 of the present invention, fig. 5 is a perspective view showing an energy-consuming damper in the hybrid self-resetting damping device capable of realizing multi-stage limit energy consumption according to exemplary embodiment 1 of the present invention, fig. 6 is a perspective view showing a fixing bracket in the hybrid self-resetting damping device capable of realizing multi-stage limit energy consumption according to exemplary embodiment 1 of the present invention, fig. 7 is a perspective view showing a force transmission plate in the hybrid self-resetting damping device capable of realizing multi-stage limit energy consumption according to exemplary embodiment 1 of the present invention, and fig. 8 is a perspective view showing a force transmission plate in the hybrid self-resetting damping mechanism capable of realizing multi-stage limit energy consumption according to exemplary embodiment 1 of the present invention.
As shown in fig. 1 to 8, the hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption according to the present exemplary embodiment may include a fixed bracket 1, a variable friction damping unit 2, a force transmission unit 3, and an energy consumption damping unit 4. Wherein, become friction damping unit 2 fixed connection on fixed bolster 1, pass power unit 3 and become friction damping unit 2 fixed connection, power consumption damping unit 4 and fixed bolster 1 fixed connection.
In the present embodiment, the fixing bracket 1 may include a first fixing end plate 11, a second fixing end plate 12, and a third fixing end plate 13. Wherein, the two ends of the second fixed end plate 12 are welded with the first fixed end plate 11 and the third fixed end plate 13 respectively. The first fixed end plate 11 and the third fixed end plate 13 are disposed to face each other, and the overall shape of the fixing bracket 1 is a "door" shape, but the present invention is not limited thereto, and the first fixed end plate 11, the second fixed end plate 12, and the third fixed end plate 13 may be fixedly connected to each other by other fixing means such as integral molding.
Alternatively, the joint between the first fixed end plate 11 and the second fixed end plate 12, and the joint between the second fixed end plate 12 and the third fixed end plate 13 may be provided with a stiffening rib 14. The stiffening ribs 14 can increase the structural stability of the fixing bracket 1, and can keep the relative positions and included angles among the first fixing end plate 11, the second fixing end plate 12 and the third fixing end plate 13 fixed when the fixing bracket 1 is subjected to an external force.
Further, the stiffening rib 14 may be fixedly connected to the connection between the first fixed end plate 11 and the second fixed end plate 12 and the connection between the second fixed end plate 12 and the third fixed end plate 13 by welding, but the present invention is not limited thereto, and the stiffening rib 14 may be fixedly connected to the first, second, and third fixed end plates by other means such as integral molding.
Further, the number of the stiffeners 14 is 3, but the present invention is not limited thereto, and the number of the stiffeners 14 may be other positive integers than 3.
In the present embodiment, the variable friction damping unit 2 may include 2 variable friction dampers 21. The 2 variable friction dampers 21 are respectively fixedly connected to the first fixed end plate 11 and the third fixed end plate 13, but the invention is not limited thereto, and the number of the variable friction dampers 21 may be other positive integers greater than 2 as long as at least one variable friction damper 21 is respectively fixedly connected to the first fixed end plate 11 and the third fixed end plate 13.
Alternatively, the variable friction damper 21 may be fixedly connected to the first fixed end plate 11 and the third fixed end plate 13 by welding, but the present invention is not limited thereto, and the variable friction damper 21 may be fixedly connected to the first fixed end plate 11 and the third fixed end plate 13 by another method such as integral molding.
Alternatively, the variable friction damper 21 may include a fixed plate 211, a sliding plate 212, a first connector 213, an elastic member 214, and a fixed lug plate 215.
The number of the fixed plates 211 may be 1, the number of the sliding plates 212 may be 2, and 2 sliding plates 212 are respectively located at both sides of the fixed plates 211. The fixed plate 211 is provided with 2 first-type through holes 2112, the 2 sliding plates 212 are provided with 2 second-type through holes 2122, and the first-type through holes 2112 and the second-type through holes 2122 are in one-to-one correspondence. The number of the first connectors 213 may be 2. Each of the 2 first connectors 213 may be simultaneously inserted through the corresponding first-type and second-type through holes 2112 and 2122 to connect the fixed plate 211 and the sliding plate 212 together. However, the present invention is not limited thereto, the number of the fixing plates 211 may be a positive integer other than 1, the number of the sliding plates 212 may be a positive integer other than 2, the number of the first through holes 2112 and the second through holes 2122 may be a positive integer other than 2, and the number of the first connectors 213 may be the same as the number of the first through holes 2112 and the second through holes 2122 or a positive integer other than 2.
Further, the first-type through holes 2112 may be oblong holes, and the second-type through holes 2122 may be round holes. However, the present invention is not limited thereto, and at least one of the first-type through holes 2112 and the second-type through holes 2122 is an elongated hole, so that the relative sliding between the fixed plate 211 and the sliding plate 212 can be ensured.
Alternatively, the elastic member 214 may be fitted over the first connection member 213. When the first connecting member 213 is inserted into the first through hole 2112 and the second through hole 2122 to connect the fixed plate 211 and the sliding plate 212, the elastic member 214 can be compressed between the first connecting member 213 and the sliding plate 212, and the elastic member 214 can generate an elastic force perpendicular to the plate surface of the sliding plate 212 after being compressed, so that the sliding plate 212 can be pressed against both sides of the fixed plate 211.
Further, the elastic member 214 is a disc spring, and the number of the elastic members 214 is 4, but the present invention is not limited thereto, and the elastic member 214 may be another elastic structure such as a spring, and the number of the elastic members 214 may be another positive integer other than 4 as long as the number of the elastic members 214 is the same as or twice the number of the first connection members 213.
Alternatively, the first connector 213 is a high-strength bolt, but the present invention is not limited thereto, and the first connector 213 may be other types of connectors satisfying the strength requirement.
In this embodiment, the first friction structure 2111 is formed on both sides of the fixed plate 211 and around the first through hole 2112, the second friction structure 2121 is formed on each of the sliding plates 212 facing one side of the fixed plate 211, and around the second through hole 2122, the first friction structure 2111 and the second friction structure 2121 can be attached to each other, that is, the fixed plate 211 and the 2 sliding plates 212 can be closely attached to each other, so that no gap is left between the contact surfaces between the fixed plate 211 and the 2 sliding plates 212, the first friction structure 2111 and the second friction structure 2121 are wavy friction surfaces, when the fixed plate 211 and the sliding plates 212 slide relative to each other due to an external force, the first friction structure 2111 and the second friction structure 2121 are staggered from each other, the sliding plates 212 can be simultaneously displaced in two directions perpendicular to the plate surfaces thereof and the plate surface of the second fixed end plate 12, and a gap is formed between the fixed plate 211 and the sliding plates 212, the sliding plates 212 can compress the elastic member 214 located on the other side of the second friction structure 2121, so that the elastic member 214 is perpendicular to the plate surface of the first friction structure and the second friction structure, and the elastic member 212 can be displaced in the direction opposite to the plate surface of the second fixed plate 212, when the elastic member 212 is pushed to the initial position, and the sliding plates 211 and the sliding plates 212 are moved again, and the sliding plates 211 can be moved, and the elastic member 211 can be moved to the initial position, and the sliding plates.
Optionally, the variable friction damper 21 may further include 1 fixing lug plate 215, and the fixing lug plate 215 is disposed on the force transmission unit 3 and fixedly connects the 2 sliding plates 212 to two sides of the fixing lug plate 215 through bolts, so that the sliding plates 212 can integrally move with the force transmission unit 3 to enable the sliding plates 212 and the fixing plate 211 to relatively slide, but the invention is not limited thereto, and the number of the fixing lug plates 215 may also be other positive integers greater than 1, or the fixing lug plate 215 may also be eliminated, and the sliding plates 212 may be directly connected to the force transmission unit 3 through a detachable connection manner such as bolts or screws.
Alternatively, the fixing lug 215 is fixedly connected to the force transmission unit 3 by welding, but the invention is not limited thereto, and the fixing lug 215 may be fixedly connected to the force transmission unit 3 by bolts, screws or other methods.
In this embodiment, the dissipative damping unit 4 includes 1 dissipative dampers 41, the dissipative dampers 41 are fixedly connected to the fixed bracket 1 by welding, and are located in a space surrounded by the first fixed end plate 11, the second fixed end plate 12, and the third fixed end plate 13, but the invention is not limited thereto, the number of dissipative dampers 41 may also be other positive integers greater than 1, and other fixing connection manners such as screws, bolts, etc. may also be used between the dissipative dampers 41 and the fixed bracket 1.
In the embodiment, the dissipative damper 41 is a slit plate, but the invention is not limited thereto, and the dissipative damper 41 is a structure other than the slit plate that can be deformed to achieve dissipative effect.
Optionally, two rows of strain gaps 411 are formed in parallel on the upper side and the lower side of the dissipative damper 41, when an external force perpendicular to the plate surface of the second fixed end plate 12 is applied to the portion between the two rows of strain gaps 411 and the external force is large enough, the portion between the two rows of strain gaps 411 can relatively displace with respect to the upper side and the lower side of the dissipative damper 41, and at this time, stress applied to the dissipative damper 41 can be concentrated on the strain gaps 411, so that the strain gaps 411 deform, that is, at this time, the entire dissipative damper 41 can elastically deform, and after the external force is removed, the dissipative damper 41 can restore the original shape under a reaction force.
Alternatively, the shape of the strain slit 411 is a diamond shape, but the present invention is not limited thereto, and the shape of the strain slit may be other shapes such as a rectangle, an ellipse, a circle, and the like.
In the present embodiment, the force transfer unit 3 includes a first force transfer mechanism 31 and a second force transfer mechanism 32, wherein the first force transfer mechanism 31 includes a force transfer plate 311, a first force transfer side plate 312, a second force transfer side plate 313 and a force transfer corner plate 314, the first force transfer side plate 312 and the second force transfer side plate 313 are located on the upper and lower sides of the force transfer plate 311, the force transfer plate 311 is located between the first force transfer side plate 312 and the second force transfer side plate 313 and is perpendicular to the first force transfer side plate 312 and the second force transfer side plate 313, the force transfer corner plate 314 is located at the connection position of the force transfer plate 311 and the first force transfer side plate 312 and the second force transfer side plate 313, and the force transfer corner plate 314 is fixedly connected to the force transfer plate 311 and the first force transfer side plate 312, the force transfer plate 311 and the second force transfer side plate 313 by bolts, that is, the force transfer plate 311 and the first force transfer side plate 312, the force transfer plate 311 and the second force transfer plate 313 can be fixedly connected by the corner plate 314 and the bolts, but the present invention is not limited thereto, and the force transfer plate 311 and the first force transfer side plate 312, the second force transfer side plate 313 can also be directly connected by bolts or welded or by other methods.
The ends of the first force transmission side plate 312 and the second force transmission side plate 313 are also fixedly connected with fixing ear plates 215, respectively, and the first force transmission side plate 312, the second force transmission side plate 313 and the variable friction damping unit 2 are connected together through the fixing ear plates 215 and bolts.
Alternatively, the number of the force transmission plates 311 is 1, but the present invention is not limited thereto, and the number of the force transmission plates 311 is also another positive integer greater than 1, and they are arranged side by side with each other.
In the present embodiment, the second force transmission mechanism 32 includes 2 force transmission rods 321, and 2 force transmission rods 321 are respectively connected to both sides of the dissipative damper 41, but the present invention is not limited thereto, and when the dissipative damper 41 and the force transmission plate 311 are plural, the number of the force transmission rods 321 is twice the number of the dissipative damper 41.
In this embodiment, one end of the force transmission rod 321 is connected to the force transmission plate 311 through the second connecting member 33, 2 third through holes 3111 are formed at the joint of the force transmission plate 311 and the force transmission rod 321,2 fourth through holes 3211 are formed at the joint of the force transmission rod 321 and the force transmission plate 311, the third through holes 3111 and the fourth through holes 3211 correspond to each other one to one, the second connecting member 33 simultaneously penetrates through the third through holes 3111 and the fourth through holes 3211 to connect the force transmission plate 311 and the force transmission rod 321, and at least one of the third through holes 3111 and the fourth through holes 3211 is an elongated hole, so that the force transmission plate 311 and the force transmission rod 321 can be ensured to slide relatively under the action of an external force.
Alternatively, the second connector 33 is a high-strength bolt, but the present invention is not limited thereto, and the second connector 33 may be other types of connectors satisfying the strength requirement.
In the embodiment, the other end of the force transmission rod 321 is fixedly connected to the dissipative damper 41 by a bolt, but the invention is not limited thereto, and the force transmission rod 321 may also be fixedly connected to the dissipative damper 41 by welding or other methods such as screw connection meeting the strength requirement.
In this embodiment, the oblong hole is formed at the connection position of the force transmission plate 311 and the force transmission rod 321, and may be located on the force transmission plate 311 and/or the force transmission rod 321, but the present invention is not limited thereto, and the oblong hole may be formed at the connection position of the force transmission rod 321 and the energy consumption damper 41, and may be located on the force transmission rod 321 and/or the energy consumption damper 41, as long as the multi-stage energy consumption effect of the damping device of the present exemplary embodiment can be achieved.
The working process of the hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption of the exemplary embodiment is described as follows:
when the damping device of the present invention is acted by a load perpendicular to the plate surface of the second fixed end plate 12, the load is firstly transmitted to the sliding plates 212 on the upper and lower sides of the fixed bracket 1 by the force transmission plate 311 through the first force transmission side plate 312 and the second force transmission side plate 313 which are fixedly connected up and down by the force transmission plate 311, the first force transmission mechanism 31 and the sliding plates 212 slide integrally relative to the fixed bracket 1 with the gradual increase of the load, because of the arrangement of the oblong holes in the connecting part of the force transmission plate 311 and the force transmission rod 321 and the variable friction damping unit 2, the fixed plate 211, the force transmission rod 321 and the dissipative damper 41 are kept fixed relative to the fixed bracket 1 while the first force transmission mechanism 31 and the sliding plates 212 slide relative to the fixed bracket 1, at this time, the sliding stroke of the first force transmission mechanism 31 and the sliding plates 212 is smaller than the length dimension of the oblong holes, when the load further increases and exceeds the critical value, the sliding stroke of the first force transfer mechanism 31 and the sliding plate 212 required for dissipating energy also exceeds the length dimension of the oblong hole, the first force transfer mechanism 31 will transfer load to the force transfer rod 321 and the energy dissipation damper 41, at this time, the force transfer rod 321 slides relative to the fixed bracket 1, and the strain gap 411 of the energy dissipation damper 41 deforms to further participate in energy dissipation, that is, under the action of a small load, the damping device can perform energy dissipation and shock absorption by means of relative sliding generated in the force transfer unit 3 and the variable friction damping unit 2 alone, when the load exceeds a certain critical value, the first force transfer mechanism 31 will transfer the load to the energy dissipation damper 41, at this time, the damping device needs to further improve the energy dissipation and shock absorption performance by means of the combined action of the relative sliding between the first force transfer mechanism 31 and the fixed bracket 1 and the deformation of the energy dissipation damper 41, thus, the effect of multi-stage energy consumption of the damping device is achieved.
When the load applied to the damping device is removed, the sliding plate 212 can be restored to the initial position with respect to the fixed plate 211 by the wavy friction surfaces of the first and second friction structures 2111 and 2121 of the variable friction damping unit 2 and the action of the elastic member 214, that is, the first force transfer mechanism 31 can be restored to the initial position with respect to the fixed bracket 1. The dissipative damper 41 can also be restored to the original shape under the combined action of the material performance of the dissipative damper and the variable friction damping unit 2, and the dowel 321 can also be restored to the original position relative to the fixed bracket 1.
The exemplary embodiment provides an application of a hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption in energy consumption and vibration reduction.
Fig. 9 shows a hysteresis rule diagram of the hybrid self-resetting damping device capable of realizing multi-stage limit energy consumption according to the exemplary embodiment 1 of the invention.
Firstly, the hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption described in exemplary embodiment 1 is installed in an earthquake-resistant structure, after an earthquake occurs, if the earthquake magnitude is smaller than or equal to a critical value, a load caused by the earthquake is transmitted to sliding plates on the upper side and the lower side of a fixed support through a first force transmission side plate and a second force transmission side plate which are fixedly connected with each other vertically by a force transmission plate, the first force transmission mechanism and the sliding plates integrally slide relative to the fixed support, and meanwhile, the fixed plate, the force transmission rod and the energy dissipation damper are kept fixed relative to the fixed support, at this time, the damping device deforms less, only excites variable friction, and performs energy dissipation through a variable friction damping unit, and after the earthquake, the damping device has significant self-resetting capability, as shown in fig. 9, the variable friction presents a typical flag-shaped hysteresis characteristic, can ignore residual deformation, and the variable friction mechanism can provide more lateral stiffness and control structure lateral movement.
If the magnitude of the shock is larger than the critical value, the first force transmission mechanism can transmit the load to the force transmission rod and the energy dissipation damper, the force transmission rod slides relative to the fixed support at the moment, the strain joint of the energy dissipation damper deforms to further participate in energy dissipation, multi-stage shock absorption and energy dissipation are achieved, the energy dissipation characteristic of the damping device under the strong shock is optimized, most of the foreseeable nonlinear deformation is concentrated in the damping device at the moment, the residual deformation of the damping device is controlled within a certain range, the main components of the structure maintain elasticity, the structure is guaranteed not to collapse, the residual deformation can be controlled within a certain range, and the post-shock maintenance is facilitated.
In conclusion, the hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption has remarkable effects in self-resetting capability and energy consumption, on one hand, the hybrid self-resetting damping device adopts a unique self-resetting structural design, can realize the recovery to the initial state after bearing a load with higher strength, and can greatly reduce the structural damage caused by plastic deformation due to material fatigue; on the other hand, the rhombic slotted plate energy dissipation damper and the variable friction damper are mutually matched to realize multi-stage energy dissipation, the bearable load range is enlarged, the energy dissipation damper and the variable friction damper are convenient to assemble and replace, and the assembly is facilitated, so that the repair work and cost caused by structural damage can be reduced.
Although the present invention has been described above in connection with the exemplary embodiments and the accompanying drawings, it will be apparent to those of ordinary skill in the art that various modifications may be made to the above-described embodiments without departing from the spirit and scope of the claims.
Claims (10)
1. The utility model provides a can realize multistage spacing power consumption's mixed self-resetting damping device which characterized in that, damping device includes: a fixed support, a force transmission unit, a variable friction damping unit and an energy consumption damping unit, wherein,
the variable friction damping unit comprises a plurality of variable friction dampers arranged on the fixed support;
the energy dissipation damping unit comprises a plurality of energy dissipation dampers arranged on the fixed support;
the force transmission unit comprises a first force transmission mechanism and a second force transmission mechanism; the first transmission mechanism is connected with the variable friction damping unit; the second force transmission mechanism is connected with the first force transmission mechanism in a sliding mode, the sliding stroke is limited within a set range, and the second force transmission mechanism is further connected with the energy consumption damping unit.
2. The hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption according to claim 1, wherein the fixed bracket comprises a first fixed end plate, a second fixed end plate and a third fixed end plate which are connected in sequence, wherein the first fixed end plate and the third fixed end plate face each other;
the first fixed end plate and the third fixed end plate are both fixedly connected with at least one variable friction damper;
the plurality of energy dissipation dampers are positioned in a space enclosed by the first, second and third fixed end plates and are respectively and fixedly connected with the first and third fixed end plates.
3. The hybrid self-resetting damping device capable of realizing multi-stage limit energy consumption according to claim 2, wherein the number of the variable friction dampers is 2,2, the variable friction dampers are all positioned at the outer side of the corresponding fixed end plate, each variable friction damper comprises 1 fixed plate, 2 sliding plates, X first connecting members and X elastic members, wherein,
the fixed plates are vertically fixed on the corresponding fixed end plates, and at least one plate surface of each fixed plate is provided with a first friction structure; the fixing plate is provided with X first through holes;
the two sliding plates are respectively positioned at two sides of the fixed plate and are tightly attached to the fixed plate, and under the condition that the plate surface of the fixed plate facing to the two sliding plates is provided with a first friction structure, the plate surface facing to the fixed plate is also provided with a second friction structure which is matched with the sliding plates; the sliding plate is provided with X second through holes, the first through holes and the second through holes are in one-to-one correspondence, and at least one of the first through holes and the second through holes is a long round hole;
the X first connecting pieces can respectively connect the fixed plate and the 2 sliding plates through the first through holes and the second through holes which are in corresponding relation;
the X elastic pieces are respectively positioned between the X first connecting pieces and the at least one sliding plate.
4. The hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption according to claim 3, wherein the first friction structure and the second friction structure both comprise wavy undulating surfaces.
5. The hybrid self-resetting damping device capable of realizing multi-level limiting energy consumption of claim 1, wherein the first force transmission mechanism is provided with Y third through holes, the second force transmission mechanism is provided with Y fourth through holes, the third through holes correspond to the fourth through holes in a one-to-one manner, the force transmission unit further comprises Y second connecting pieces, and the second connecting pieces can respectively penetrate through the third through holes and the fourth through holes in a corresponding relationship to connect the first force transmission mechanism with the second force transmission mechanism;
at least one of the third through hole and the fourth through hole is a long circular hole, and the first force transmission mechanism and the second force transmission mechanism can slide relatively under the action of external force.
6. The hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption according to claim 2, wherein the energy consumption damper is a slotted plate, and a plurality of strain seams are formed in the slotted plate.
7. The hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption according to claim 6, wherein the shape of the strain gap is a diamond shape.
8. The hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption of claim 3, wherein the first force transmission mechanism comprises a plurality of force transmission plates, a first force transmission side plate and a second force transmission side plate, the first force transmission side plate and the second force transmission side plate are fixedly connected to two sides of the plurality of force transmission plates, and the first force transmission side plate and the second force transmission side plate are respectively and fixedly connected with the sliding plates of the 2 variable friction dampers.
9. The hybrid self-resetting damping device capable of realizing multi-stage limiting energy consumption according to claim 8, wherein the number of the force transmission plates is 1, and the plate surfaces of the force transmission plates are perpendicular to the plate surfaces of the first and second force transmission side plates to form an I-shaped structure;
the first force transmission mechanism also comprises at least two force transmission angle plates; at least one force transmission angle plate is arranged at the joint of the force transmission plate and the first force transmission side plate and is fixedly connected with the force transmission plate and the first force transmission side plate; at least one force transmission angle plate is arranged at the joint of the force transmission plate and the second force transmission side plate and is fixedly connected with the force transmission plate and the second force transmission side plate.
10. Use of the hybrid self-resetting damping device capable of realizing multi-stage limit energy consumption according to any one of claims 1 to 9 in energy-consuming and shock-absorbing applications.
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| JP2014088916A (en) * | 2012-10-30 | 2014-05-15 | Ohbayashi Corp | Vibration control structure |
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| JP2014088916A (en) * | 2012-10-30 | 2014-05-15 | Ohbayashi Corp | Vibration control structure |
| WO2020252835A1 (en) * | 2019-06-20 | 2020-12-24 | 大连理工大学 | Shear-type steel truss coupling beam having friction dampers for fast post-earthquake recovery |
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