CN106760018B - Support type anti-buckling low-relaxation friction type anti-seismic damper - Google Patents
Support type anti-buckling low-relaxation friction type anti-seismic damper Download PDFInfo
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- CN106760018B CN106760018B CN201611260533.9A CN201611260533A CN106760018B CN 106760018 B CN106760018 B CN 106760018B CN 201611260533 A CN201611260533 A CN 201611260533A CN 106760018 B CN106760018 B CN 106760018B
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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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Abstract
The invention provides a supporting type buckling-restrained low-relaxation friction type anti-seismic damper, which comprises: a damping core plate; the core plate outer clamping piece comprises outer clamping plates which are oppositely arranged on two sides of the damping core plate and a connecting end plate for connecting an external main body structure; a friction damping layer is arranged between the outer clamping plate and the damping core plate and between the middle clamping plate and the damping core plate; the opposite-pulling adjusting component comprises an opposite-pulling piece and an elastic adjusting piece, the opposite-pulling piece is oppositely pulled and penetrated through the damping core plate and the outer clamping plate, and the elastic adjusting piece is supported against the outer clamping plate and the opposite-pulling piece; and the anti-buckling sleeve is sleeved on the outer clamping plate and is supported and connected with the connecting end plate. According to the invention, the elastic adjusting piece is arranged between the counter-pulling piece and the outer clamping plate, so that the applicability of the relaxation of the pre-tightening force of the counter-pulling piece in the damper is improved; through buckling restrained sleeve, guaranteed the stability of attenuator under the axle load state on the one hand, provide reliable assurance to the corrosion resisting property of attenuator simultaneously.
Description
Technical Field
The invention relates to the field of building construction earthquake resistance, in particular to a supporting type buckling-prevention low-relaxation friction type earthquake-resistant damper.
Background
The friction damper is a control device for dissipating vibration energy by utilizing friction energy dissipation of a friction surface, has simple structure, convenient installation and good energy dissipation performance, is not influenced by temperature, and is an energy dissipation and shock absorption device commonly used in engineering. Most dampers generate a shock-resistant frictional damping force by rubbing a damping layer between a damping member and an outer clip member and then by pulling the damping member and the outer clip member. However, the existing friction-type dampers have four problems as follows:
1. the friction damping layer has larger average compressive stress or uneven stress, and generates larger friction loss;
2. the friction damping force generated by the pressure between the friction damping layer and the damping part can be greatly reduced along with the loss of the friction material in the friction process by simply adopting a high-rigidity loading system such as a high-strength bolt;
3. because the damper is restrained by the problems of stability (mainly out-of-plane instability) and rotation in the inner surface of the damper caused by additional bending moment in the surface when the damper is used for supporting axial connection (in the direction parallel to the friction force), more friction type dampers cannot be used for supporting axial connection, and the arrangement and the use of the damper are limited to a certain extent.
4. Because the pretightening force loading system of the damper mostly uses high-strength steel (such as high-strength bolts and the like), the stress of the component is higher, and the requirement on corrosion resistance is correspondingly higher. The traditional coating has poor protection durability and high maintenance cost, and is suitable for sealing and protecting the loading system.
Therefore, the invention is produced.
Disclosure of Invention
In view of the above, the present invention provides a friction-type damper of a loading system, which can uniformly diffuse a pre-tightening force to a friction damping layer and has a small rigidity, so as to reduce wear of the friction damping layer, which is increased due to uneven pressure, and also reduce the relaxation of the pre-tightening force caused by the wear of the friction damping layer. And the buckling prevention technology is adopted to improve the overall stability of the damper, and the limiting device is adopted to restrict the in-plane rotation of the damper, so that the damper can be used for axial stressed support. Meanwhile, the buckling-restrained sleeve is used as a protective layer of the internal device, so that the durability of the product is improved.
In order to achieve the purpose, the invention adopts the technical scheme that:
provided is a supported buckling restrained low-relaxation friction type anti-seismic damper, including:
the damping core plate is provided with an assembly hole;
the core plate outer clamping piece comprises outer clamping plates which are oppositely arranged on two sides of the damping core plate and a connecting end plate for connecting an external main body structure; a friction damping layer is arranged between the outer clamping plate and the damping core plate and between the middle clamping plate and the damping core plate, and the connecting end plate is connected to the end part of the outer clamping plate;
the opposite-pulling adjusting component comprises an opposite-pulling piece and an elastic adjusting piece, the opposite-pulling piece is oppositely pulled and penetrated through the outer clamping plate and the assembling hole on the two sides of the damping core plate, and the elastic adjusting piece is arranged between the opposite-pulling piece and the outer side of the outer clamping plate and is supported against the outer clamping plate and the opposite-pulling piece; and
the buckling-restrained sleeve is sleeved on the outer clamping plate and is in supporting connection with the connecting end plate, and the outer clamping plate is supported on the inner wall of the buckling-restrained sleeve.
The anti-seismic device has the beneficial effects that under the condition that the friction damping layer is abraded, the pretightening force of the counter-pulling piece can be loosened, namely the pretightening force is not enough to provide the pressure required by the friction damping layer, so that the friction damping force is not enough to meet the anti-seismic requirement; the above situation is avoided.
The support type anti-buckling low-relaxation friction type anti-seismic damper is further improved in that the assembling holes are long slotted holes. When a plurality of opposite pulling pieces are arranged in the form of the continuous long circular hole, the opposite pulling pieces are convenient to open, and the position of the opposite pulling pieces is convenient to adjust.
The supporting type buckling-restrained low-relaxation friction type anti-seismic damper is further improved in that flange plates are arranged on flanges of the damping core plates, sealing connecting plates for connecting external main body structures are further arranged on the damping core plates, and the sealing connecting plates and the connecting end plates are respectively located at two opposite ends of the buckling-restrained sleeve; the flange plates are parallel to the long slotted holes, and the sealing connecting plates are arranged at the ends of the damping core plates and are perpendicular to the damping core plates and the flange plates. The flange plate improves the stability of the damper core plate; the sealing connecting plate, the connecting end plate and the buckling-restrained sleeve at the end of the damper core plate isolate a passage for exchanging substances between the external environment and the inside of the damper through the gap of the damper core plate, and the durability of the damper is improved. The sealing connecting plate can be used as a connecting plate connected with an external main body structure besides the sealing function.
The invention further provides a further improvement of the support type buckling-restrained low-relaxation friction type anti-seismic damper, which is characterized in that a sealing connecting plate is arranged between a first main body structure and a second main body structure, and a connecting end plate is used for connecting the first main body structure and the second main body structure.
The supporting type buckling-restrained low-relaxation friction type anti-seismic damper is further improved in that a limiting fixing plate for limiting the damping core plate is further arranged between the damping core plate and the supporting plate, and the limiting fixing plate is connected to a flange of the damping core plate and is perpendicular to the flange plate. The limiting fixing plate is arranged on the damper core plate and abutted (contacted but not connected) against the inner wall of the anti-buckling sleeve, so that the in-plane rotation between the damper core plate and the outer clamping plate is restrained.
The supporting type buckling-restrained low-relaxation friction type anti-seismic damper is further improved in that the counter-pulling piece is a counter-pulling bolt, and the counter-pulling bolt comprises a counter-pulling screw rod and a fastening nut sleeved on the counter-pulling screw rod; the elastic adjusting piece is a disc spring, and the disc spring is sleeved on the counter-pulling screw rod and supports against the fastening nut and the outer clamping plate. On the one hand, belleville spring can provide the enough big elastic potential energy of deposit, satisfies the regulation needs of outer splint, and on the other hand, belleville spring cooperation is to the stay bolt, and it is more convenient to install, and the structure is also simpler.
The support type anti-buckling low-relaxation friction type anti-seismic damper is further improved in that the damper further comprises a loading piece, wherein the loading piece is fixedly arranged on the inner side of the outer clamping plate, and the friction damping layer is arranged between the loading piece and the damping core plate. The pre-tightening force of the counter-pulling piece is transmitted by the loading piece, so that the pre-tightening force can be effectively dispersed, and the compressive stress of the friction damping layer is reduced, thereby reducing the abrasion of the friction damping layer.
The supporting type buckling-restrained low-relaxation friction type anti-seismic damper is further improved in that the loading piece comprises a loading frame and a loading plate, a first port of the loading frame is connected to the outer clamping plate, the loading plate is connected to a second port of the loading frame, and the loading plate abuts against the friction damping layer. The first port of loading frame is connected in the outer splint, has prevented that the outer splint from receiving to drawing the effect and warping, has also reduced the rigidity demand of outer splint.
The supporting type buckling-restrained low-relaxation friction type anti-seismic damper is further improved in that a force transmission annular rib connected to the inner frame surface of the loading frame is arranged in the loading frame, the force transmission annular rib is connected to the outer clamping plate, and the outer diameter of the force transmission annular rib is matched with the outer diameter of the belleville spring; . So that the adjusting pretightening force exerted by the elastic potential energy stored in the disk spring can be uniformly loaded on the rectangular loading frame.
The support type buckling-restrained low-relaxation friction type anti-seismic damper is further improved in that when the force transmission annular rib is large, an auxiliary loading piece can be additionally arranged in the force transmission annular rib according to the stress requirement. The auxiliary loading member comprises an auxiliary loading rib and an auxiliary loading plate. The loading rib is respectively connected with the force transmission ring rib, the outer clamping plate and the auxiliary loading plate. When the auxiliary loading plate is close to the loading plate connected with the loading frame, the auxiliary loading plate is directly connected with the loading plate.
The support type anti-buckling low-relaxation friction type anti-seismic damper is further improved in that a force transmission plate is further arranged at the end part of the counter-pulling piece, and the elastic adjusting piece is supported against the force transmission plate and the outer clamping plate.
The supporting type buckling-restrained low-relaxation friction type anti-seismic damper is further improved in that the number of the damping core plates is multiple, the multiple damping core plates are arranged side by side at intervals, an intermediate plate is arranged between every two adjacent damping core plates and connected to the connecting end plate, an intermediate plate hole for the counter-pulling piece to penetrate through is formed in the intermediate plate, and a friction damping layer is arranged between the intermediate plate and the damping core plates.
The invention further improves the supporting type buckling-restrained low-relaxation friction type anti-seismic damper, wherein the buckling-restrained sleeve is a square column sleeve; a stiffening rib plate is arranged between the anti-buckling sleeve and the outer side of the outer clamping plate; the stiffening rib plate is connected with the anti-buckling sleeve and supported against the outer clamping plate; or the stiffening rib plate is connected with the outer clamping plate and supported against the anti-buckling sleeve. The outer clamping plate and the outer side of the counter-pull piece are provided with anti-buckling sleeves, the anti-buckling sleeves are connected with the end plates, and the outer clamping plate and the middle clamping plate are directly supported (contacted but not connected) on the anti-buckling sleeves in a plane. The anti-buckling sleeve is internally provided with a sleeve stiffening rib which vertically supports (contacts but is not connected with) the outer clamping plate, and when the sleeve stiffening rib is connected with the sleeve and is vertical to the end plate, the sleeve stiffening rib is also connected with the end plate. The sleeve can provide anti-buckling force for the inner component, and meanwhile, the sleeve can also carry out closed protection on the component of the damper inside the sleeve. The buckling-restrained sleeve can be a cylinder or a polygonal cylinder besides a square-cylindrical sleeve.
Drawings
FIG. 1 is a view showing the structure of the anti-buckling low-relaxation friction type seismic damper of the present invention.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a cross-sectional view a-a of fig. 1.
FIG. 4 is a schematic structural diagram of a damping core plate in the supporting anti-buckling low-relaxation friction type anti-seismic damper of the present invention.
FIG. 5 is a first structural schematic diagram of the load member and force-transmitting ring rib of the braced anti-buckling low-slack friction type anti-seismic damper of the present invention.
FIG. 6 is a second structural schematic diagram of the loading member and the force-transmitting ring rib of the anti-buckling low-relaxation friction type seismic damper of the present invention.
FIG. 7 is a schematic structural diagram of a friction plate of the braced anti-buckling low-relaxation friction type anti-seismic damper of the present invention.
FIG. 8 is a schematic structural diagram of a multi-layer friction damping layer of the supporting anti-buckling low-relaxation friction type anti-seismic damper of the present invention.
Detailed Description
In view of the above, the present invention aims to provide a damper for axial supporting force, which can adjust a frictional damping force.
Referring to fig. 1, 2, 3 and 4, the present invention provides a supporting anti-buckling low-relaxation frictional anti-seismic damper, which provides an anti-seismic frictional damping force along the axial direction of the support, and the frictional damping force is reduced with a low extent along with the wear of the frictional damping layer 6. To achieve the object, the present invention provides a supported buckling restrained low-relaxation friction type anti-seismic damper, comprising: the damping core plate 1 is provided with an assembly hole 12; the core plate outer clamping piece comprises outer clamping plates 21 which are oppositely arranged on two sides of the damping core plate and a connecting end plate 8 for connecting an external main body structure; a friction damping layer 6 is arranged between the outer clamping plate 21 and the damping core plate 1 in a clamping way, and a connecting end plate 8 is connected to the end part of the outer clamping plate 21; the counter-pulling adjusting component comprises a counter-pulling piece 3 and an elastic adjusting piece 4, the counter-pulling piece 3 is in counter-pulling penetrating through an outer clamping plate 21 and an assembling hole 12 on two sides of the damping core plate 1, and the elastic adjusting piece 4 is arranged between the counter-pulling piece 3 and the outer side of the outer clamping plate 21 and supports against the outer clamping plate 21 and the counter-pulling piece 3; and the anti-buckling sleeve 9 is sleeved on the outer clamping plate 21 and is supported and connected to the connecting end plate 8, the outer clamping plate 21 is supported on the inner wall of the anti-buckling sleeve 9, and the anti-buckling sleeve 9 is perpendicular to the plate surface of the connecting end plate 8. The connecting end plate 8 blocks and seals the end opening of the anti-bending sleeve 9.
As described above, the friction damping layer 6 is worn, and the pretightening force of the tension member 3 is loosened when the friction damping layer 6 is worn, that is, the pretightening force is not enough to provide the pressure required by the friction damping layer 6, so that the friction damping force is not enough to meet the requirement of earthquake resistance, and the elasticity adjusting member 4 is arranged between the tension member 3 and the outer clamping plate 21 to improve the applicability of the pretightening force of the tension member 3 in the damper; the above situation is avoided.
The following detailed description is made with reference to the accompanying drawings and preferred embodiments:
referring to fig. 4, as a preferred embodiment of the present invention, the pulling member 3 pulls the outer clamping plates 21 on both sides of the damping core plate 1 to generate a pre-tightening force, so that the outer clamping plates 21 tend to approach the damping core plate 1, and further, the friction damping layer 6 is disposed between the outer clamping plates 21 and the damping core plate 1 to generate a friction damping force against the building vibration. In order to facilitate the opposite-pulling penetration of the opposite-pulling piece 3, the damping core plate 1 is provided with an assembling hole 12. Preferably, the fitting hole 12 is a slotted hole (continuous oblong hole). When a plurality of opposite pulling pieces 3 are arranged in the form of the continuous long circular holes, the opposite pulling pieces are convenient to open, and the position of the opposite pulling pieces 3 can be conveniently adjusted in an adaptive mode.
Referring to fig. 1 and fig. 3, as a preferred embodiment of the present invention, the flange of the damping core plate 1 is provided with a flange plate 13, the damping core plate 1 is further provided with a sealing connecting plate 15 for connecting the external main structure, the sealing connecting plate 15 and the connecting end plate 8 are respectively located at two opposite ends of the anti-buckling sleeve; the flange plate 13 is parallel to the long slotted hole, and the sealing connecting plate 15 is arranged at the end part of the damping core plate and is vertical to the damping core plate 1 and the flange plate 13. The sealing connecting plate 15 is further provided with a connecting web 16, and the connecting web is vertically arranged on the plate surface of the sealing connecting plate 15 for connecting an external main body structure. The connecting end plate 8 is connected to the end of the outer clamping plate after the counter-pulling piece 3 performs counter-pulling on the damping core plate 1 and the outer clamping plate 21.
Specifically, the end of the damping core plate 1, which is far away from the connecting end plate 8, is provided with a sealing connecting plate 15 perpendicular to the assembling hole 12, flanges at two ends of the damping core plate 1 are provided with flange plates 13, the flange plates 13 are parallel to the slotted holes and perpendicular to the sealing connecting plate 15, and the length of the flange plates 13 is required to ensure that a sufficient clear distance is kept between the damper core plate 1 and the friction damping layer 6 in the friction movement direction in the movement process of the damper core plate 1, preferably, the thickness of the damping core plate 1 is not less than 10 times. Take the present invention disposed on the first outer body structure and the second outer body structure as an example. The connection end plate 8 is supported and connected to the first outer body structure and the closure connection plate 15 is connected to the second outer body structure by a connection web 16. The axial supporting force of the anti-bending sleeve can be applied.
Referring to fig. 3 and 4, as a preferred embodiment of the present invention, since the assembly holes 12 are long slots, in order to prevent the damping core plate 1 from rotating relative to the pulling member 3, a limiting fixing plate 14 for limiting the damping core plate 1 is further disposed between the damping core plate 1 and the buckling-restrained sleeve 9, and the limiting fixing plate 14 is connected to the flange of the damping core plate 1. It should be noted that the limit stop plate 14 is not in contact with the anti-buckling sleeve 9, and the gap between the limit stop plate and the anti-buckling sleeve is adjusted to ensure that no contact occurs between the counter pull 3 and the assembly hole 12. To further reduce the influence, a low-friction isolating surface layer may be provided on the surface of the position-limiting fixing plate 14, and a polytetrafluoroethylene coating may be preferably used. Referring to fig. 3 and 4, preferably, the position-limiting fixing plate 14 is a semicircular plate. Therefore, the limit fixing plate 14 is in contact with the anti-buckling sleeve 9 in the moving process, the isolation layer is damaged, and the limit fixing plate 14 and the anti-buckling sleeve 9 are condensed due to long-term contact and are easily separated from each other in subsequent movement due to small contact surfaces.
As a preferred embodiment of the present embodiment, the counter-pulling element 3 is a counter-pulling bolt, and the counter-pulling bolt includes a counter-pulling screw rod 32 and a fastening nut 31 sleeved on the counter-pulling screw rod 32. Pretension of the split bolt is provided by adjusting the tightening nut 31. This is prior art and will not be redundantly described.
Referring to fig. 1 and 3, as a preferred embodiment of the present invention, the elastic adjusting member 4 is a disc spring, and the disc spring is sleeved on the opposite-pulling screw 32 and supported between the fastening nut 31 and the outer clamping plate 21. On the one hand, belleville spring can provide the enough big elastic potential energy of deposit, satisfies outer splint 21's regulation needs, and on the other hand, belleville spring cooperation is to the stay bolt, and it is more convenient to install, and the structure is also simpler. The disc spring can be arranged between one end of the opposite pulling piece and the outer side of the outer clamping plate, or disc spring parts are arranged between two ends of the opposite pulling piece and the outer side of the outer clamping plate, and the specific selection is determined according to actual construction and is not limited in structure.
As a preferred embodiment of this embodiment, in order to facilitate the installation of the disc spring, the force transmission plate 33 is installed on the opposite-pulling screw 32, and the disc spring is installed between the force transmission plate 33 and the outer clamping plate 21. Preferably, in order to protect the outer clamp plate 21 and uniformly distribute the pressure of the disc spring on the outer clamp plate 21, a pad is disposed between the outer clamp plate 21 and the disc spring, and the pad transmits the pressure of the disc spring to the outer clamp plate 21 (the pad is not specifically shown in this embodiment, but a person skilled in the art can understand the description).
Referring to fig. 3, as a preferred embodiment of the present invention, the present invention further includes a loading member, the loading member is fixed on the inner side of the outer clamping plate 21, and the friction damping layer 6 is disposed between the loading member and the damping core plate 1. On one hand, the pre-tightening force of the counter-pulling piece 3 is transferred by the loading piece, so that the force transfer path is more reasonable, and the structure of the outer clamping plate 21 is further strengthened as the loading piece is fixedly arranged on the outer clamping plate 21; on the other hand, the loading area between the loading piece and the friction damping layer 6 is larger, the pressure of the friction damping layer 6 is smaller, and the wear rate is lower.
In a preferred embodiment of the present invention, a force transmission ring rib 7 connected to the inner frame surface of the loading frame 51 is provided in the loading frame 51, and the outer diameter of the force transmission ring rib 7 is matched with the outer diameter of the disc spring. So that the adjusting pretightening force exerted by the elastic potential energy of the disk spring can be uniformly loaded on the rectangular loading frame 51. Further, when the force transmission ring ribs 7 are plural, a reinforcing plate 53 is provided between the adjacent force transmission ring ribs 7. The force transfer ring rib 7 is connected to the loading frame 51, the reinforcement plate 53 and the outer clamping plate. The force-transmitting ring rib 7 is intended to transmit force to the loading frame and the reinforcement plate 53 and is not in supporting connection with the loading plate 52.
Referring to fig. 3 and 5, fig. 5 is a structural diagram of the force transmission ring rib 7 when it is smaller, as a preferred embodiment of the present invention, the loading element includes a loading frame 51 and a loading plate 52, a first port of the loading frame 51 is connected to the outer clamping plate 22, the loading plate 52 is connected to a second port of the loading frame 51, and the loading plate 52 is pressed against the friction damping layer 6. The first port of the loading frame 51 is connected to the outer clamp plate 21, preventing the outer clamp plate 21 from being deformed by the action of the tension member 3, and also reducing the rigidity requirement of the outer clamp plate 21. Preferably, a plurality of reinforcing plates 53 are arranged side by side in the loading frame 51 to reinforce the structural strength of the integrated loading frame 51, and the reinforcing plates 53 are connected to the loading plate 52 to assist the uniform stress diffusion of the loading plate 52. Preferably, the loading plate 52 is further provided with a loading plate hole 521 for the counter-pulling member 3 to penetrate through, and the loading plate hole 521 is a square hole.
Referring to fig. 3 and 6, fig. 6 is a structural view of the force-transmitting ring rib 7 when it is larger, wherein a loading plate hole 521 for the counter-pulling element 3 to pass through is formed on the loading plate 52, and the loading plate hole 521 is a square hole. Further, when the force transfer ring rib 7 is large, an auxiliary loading member 522 is provided within the force transfer ring rib 7, which is connected to the force transfer ring rib 7 and which is supported between the outer clamping plate and the loading plate 52. Preferably, the auxiliary loading member 522 is an auxiliary loading plate.
As a preferred embodiment of the present embodiment, the friction damping layer 6 includes a friction counter surface attached to the damping core plate 1 and a friction plate 61 pressed against the friction counter surface, and the friction plate 61 is fixed to the loading plate 52. Friction of the friction plate 61 is matched by arranging a friction counterface, so that the friction coefficient is increased, and the friction damping force is further increased. Preferably, the damper core plate 1 uses 304 stainless steel plate directly as the friction facing.
Referring to fig. 8, as a preferred embodiment of the present embodiment, another structure when no loading member is provided in the present embodiment is described, specifically, the structure includes a plurality of damping core plates 1 disposed side by side, the damping core plates 1 are disposed in parallel with the outer clamping plates 21, except that the outer clamping plates 21 are disposed on the outermost sides of the damping core plates 1, an intermediate plate 22 is disposed between each pair of damping core plates 1, and the intermediate plate 22 is provided with an intermediate plate hole for the counter-pulling member 3 to penetrate through; a friction damping layer 6 is arranged between the damping core plate 1 and the outer clamping plate 21, and the friction damping layer 6 is arranged between the damping core plate 1 and the middle plate 22; a plurality of outer clamping plates 21 and intermediate plates 22 are each connected to the connecting end plate 8. The counter-pulling piece 3 penetrates through the counter-pulling and damping core plate 1, the outer clamping plate 21 and the middle clamping plate 22 to provide pre-tightening force, and the elastic adjusting piece 4 is arranged between the counter-pulling piece 3 and the outer clamping plate 21.
As a preferred embodiment of the present embodiment, the buckling-restrained sleeve 9 is a square column; a stiffening rib plate 93 is arranged between the buckling-restrained sleeve 9 and the outer side of the outer clamping plate 21. The stiffener 93 has two connection modes:
firstly, the stiffening rib plate 93 is connected to the anti-buckling sleeve 9 and supported against the outer clamping plate 21, preferably, the stiffening rib plate 93 is connected to the anti-buckling sleeve 9 and the connecting end plate 8 at the same time;
the second stiffening rib plate 93 is connected to the outer clamping plate 21 and supported against the anti-buckling sleeve 9.
Specifically, the stiffening ribs 93 may be parallel to the connecting end plate 8 or perpendicular to the connecting end plate 8 when connected to the buckling restrained sleeve 9 or the outer clamping plate 21.
Preferably, for the sake of easy understanding, the anti-buckling sleeve 9 includes a first sleeve plate 91 disposed oppositely, and a second sleeve plate 92 disposed oppositely; the first sleeve plate 91 is parallel to the outer clamping plate 21, and the second sleeve plate 92 is parallel to the slotted hole and the flange plate 13; the outer clamping plate 21 supports against the second sleeve plate 92; the reinforcing rib 93 is connected to the first sleeve plate 91 or the outer clamp plate 21. It should be noted that only the anti-buckling sleeve 9 is described in detail in the present embodiment, but the anti-buckling sleeve 9 may also be a cylinder or a polygonal column.
Referring to fig. 4 and 6, when the bearing pressure of the friction plate is sufficient, the force-transmitting ring rib and the loading member are eliminated, and preferably, the friction plate is an annular friction plate.
Referring to fig. 2, a preferred embodiment of the present invention is provided to prevent corrosion of the disc spring and the high-strength bolt due to external factors. Further, after the above assembly of the present invention is installed, a packing plate 94 is disposed at an opening end of the anti-bending sleeve 9 away from the connecting end plate 9, the packing plate 94 is welded to the anti-bending sleeve 9, and a hole for the sealing connecting plate 15 to pass through is formed in the packing plate 94, and the shape of the hole matches the shape of the sealing connecting plate 15. And the gaps among the packaging plate 94, the damper core plate 1 and the damping core plate flange 13 are sealed by adopting weather-proof silica gel. The components inside the anti-buckling sleeve are hermetically packaged to prevent the service life from being reduced due to corrosion.
By adopting the technical scheme, the invention achieves the following technical effects:
the friction damper has the advantages that in the field of friction dampers, the structure is simple, the materials are convenient to obtain, and the friction efficiency is high;
the invention uses the loading piece to transmit the pretightening force of the counter-pulling piece, so that the force transmission path is more reasonable, the loading area between the loading piece and the friction damping layer is larger, the friction material is uniformly pressed, the pressure intensity is small, and the wear rate is reduced.
And thirdly, the elastic potential energy stored by the elastic adjusting piece is used for adapting to the relaxation of the pretightening force of the pulling piece caused by the loss of the damping friction layer.
And fourthly, the loading piece is fixedly arranged on the outer clamping plate, so that the rigidity requirement of the outer clamping plate is reduced.
And fifthly, the outside adopts the enclosed buckling restrained sleeve, so that on one hand, the stability of the damper in the axial compression state is ensured, and meanwhile, the anti-corrosion performance of the damper is reliably ensured.
And sixthly, limiting device is adopted to limit the damper to rotate in the plane under the additional bending moment.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes can be made therein. Therefore, it is intended that the invention not be limited to the particular details of the embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (7)
1. A supported buckling restrained low-relaxation friction type anti-seismic damper, comprising:
the damping core plate is provided with an assembly hole, and the assembly hole is a long slot hole;
the core plate outer clamping piece comprises outer clamping plates which are oppositely arranged on two sides of the damping core plate and a connecting end plate for connecting an external main body structure; a friction damping layer is clamped between the outer clamping plate and the damping core plate, and the connecting end plate is connected to the end part of the outer clamping plate;
the opposite-pulling adjusting component comprises an opposite-pulling piece and an elastic adjusting piece, the opposite-pulling piece is oppositely pulled and penetrated through the outer clamping plate and the assembling hole on the two sides of the damping core plate, and the elastic adjusting piece is arranged between the opposite-pulling piece and the outer side of the outer clamping plate and is supported against the outer clamping plate and the opposite-pulling piece; and
the anti-buckling sleeve is sleeved on the outer clamping plate and is supported and connected to the connecting end plate, and the outer clamping plate is supported against the inner wall of the anti-buckling sleeve;
the flange of the damping core plate is provided with a flange plate, the damping core plate is also provided with a sealing connecting plate for connecting an external main body structure, and the sealing connecting plate and the connecting end plate are respectively positioned at two opposite ends of the anti-buckling sleeve; the flange plates are parallel to the long slotted holes, and the sealing connecting plates are arranged at the ends of the damping core plates and are vertical to the damping core plates and the flange plates; a limiting fixing plate for limiting the damping core plate is further arranged between the damping core plate and the supporting plate, and the limiting fixing plate is connected to the flange of the damping core plate and is perpendicular to the flange plate; an adjusting gap is formed between the limiting fixing plate and the anti-buckling sleeve to ensure that the counter-pulling piece is not contacted with the assembling hole, and the limiting fixing plate is a semicircular plate body; the limiting fixing plate is in contact with the anti-buckling sleeve in the moving process, and the in-plane rotation between the damping core plate and the outer clamping plate is restrained.
2. The braced buckling-restrained low-slack friction type seismic damper of claim 1, wherein: the counter-pulling piece is a counter-pulling bolt which comprises a counter-pulling screw rod and a fastening nut sleeved on the counter-pulling screw rod; the elastic adjusting piece is a disc spring, and the disc spring is sleeved on the counter-pulling screw rod and supports against the fastening nut and the outer clamping plate.
3. The braced buckling-restrained low-slack friction type seismic damper of claim 2, wherein: the friction damping core plate is characterized by further comprising a loading piece, wherein the loading piece is fixedly arranged on the inner side of the outer clamping plate, and the friction damping layer is arranged between the loading piece and the damping core plate.
4. The braced buckling-restrained low-slack friction type seismic damper of claim 3, wherein: the loading piece comprises a loading frame and a loading plate, a first port of the loading frame is connected to the outer clamping plate, the loading plate is connected to a second port of the loading frame, and the loading plate is pressed against the friction damping layer.
5. The braced buckling-restrained low-slack friction type seismic damper of claim 4, wherein: and a force transmission annular rib connected to the inner frame surface of the loading frame is arranged in the loading frame, the force transmission annular rib is connected to the outer clamping plate, and the outer diameter of the force transmission annular rib is matched with that of the belleville spring.
6. The braced buckling-restrained low-slack friction type seismic damper of claim 2, wherein: the quantity of damping core is a plurality of, and is a plurality of the damping core sets up alternately side by side, and is adjacent be equipped with the intermediate lamella between the damping core, the intermediate lamella connect in connect the end plate, seted up the confession on the intermediate lamella pore of wearing to establish to the drawing piece, the intermediate lamella with be equipped with the friction damping layer between the damping core.
7. The braced buckling-restrained low-slack friction type seismic damper of claim 2, wherein: a stiffening rib plate is arranged between the anti-buckling sleeve and the outer side of the outer clamping plate; the stiffening rib plate is connected with the anti-buckling sleeve and supported against the outer clamping plate; or the stiffening rib plate is connected with the outer clamping plate and supported against the anti-buckling sleeve.
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| CN201611260533.9A CN106760018B (en) | 2016-12-30 | 2016-12-30 | Support type anti-buckling low-relaxation friction type anti-seismic damper |
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| CN201611260533.9A CN106760018B (en) | 2016-12-30 | 2016-12-30 | Support type anti-buckling low-relaxation friction type anti-seismic damper |
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| CN107288045B (en) * | 2017-08-03 | 2019-10-25 | 重庆水利电力职业技术学院 | Reinforced bridge |
| JP7385781B1 (en) | 2023-04-04 | 2023-11-22 | 鹿島建設株式会社 | friction damper |
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