CN209779436U - Bridge subtracts isolation bearing - Google Patents

Bridge subtracts isolation bearing Download PDF

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Publication number
CN209779436U
CN209779436U CN201920205464.4U CN201920205464U CN209779436U CN 209779436 U CN209779436 U CN 209779436U CN 201920205464 U CN201920205464 U CN 201920205464U CN 209779436 U CN209779436 U CN 209779436U
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CN
China
Prior art keywords
sliding
bridge
sliding block
slides
locating plate
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Expired - Fee Related
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CN201920205464.4U
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Chinese (zh)
Inventor
朱美莲
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Police Communications Construction (group) Co Ltd
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Police Communications Construction (group) Co Ltd
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Priority to CN201920205464.4U priority Critical patent/CN209779436U/en
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Publication of CN209779436U publication Critical patent/CN209779436U/en
Expired - Fee Related legal-status Critical Current
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  • Bridges Or Land Bridges (AREA)

Abstract

The utility model discloses a bridge subtracts isolation bearing belongs to building shock attenuation technical field, and its technical essential includes that the rigid coupling still includes two slip subassemblies in the locating plate of pier in the backup pad of bridge floor and rigid coupling at least, the subassembly that slides is located between backup pad and the locating plate, the subassembly that slides is including sliding base and sliding block, the base that slides is located on the locating plate and with locating plate fixed connection, piles up two of setting from top to bottom the base that slides all sets up one spacing recess that slides on one side that is close to each other, and the sharp intercrossing at length direction place of two arbitrary spacing recesses that slide sets up, at least the level sets up a set of spring between the inner wall of sliding block and sliding base. The utility model discloses can provide multidirectional buffering displacement to have good shock attenuation and shock insulation performance, the anti-seismic performance of whole bridge when effectively having improved the earthquake.

Description

Bridge subtracts isolation bearing
Technical Field
The utility model belongs to the technical field of the building shock attenuation, more specifically says, it relates to a bridge subtracts isolation bearing.
Background
Natural disasters and human effects can cause the vibration of the bridge, for example, when the vibration frequency is consistent with the natural frequency of the bridge, the resonance phenomenon can be generated, the amplitude of the whole bridge system is obviously increased, and the bridge system is extremely easy to damage; when natural disasters such as typhoons, earthquakes and the like occur, the adjacent beams of the bridge collide with each other or the beams are longitudinally and transversely displaced to cause the support to be deformed by a large shearing force, and then the upper part of the bridge is separated from the support to generate the phenomenon of beam falling.
The shock insulation support method is a wider method applied to earthquake resistance, laminated rubber shock insulation and reduction supports are mainly added on a bridge support, the shock insulation and reduction supports are arranged at the joints of a beam body, piers and platforms and used for preventing the beam from falling due to overlarge displacement during an earthquake, but after the structural design is adopted, a better shock absorption effect cannot be achieved, particularly under the condition of large vibration amplitude, the shock resistance is insufficient, when the earthquake occurs, the non-directional displacement of the bridge relative to a pier exceeds the shock absorption and shock insulation performance processing range of the existing bridge shock insulation and reduction support technology, the bridge can be seriously damaged and collapsed, and the whole traffic system is paralyzed.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a bridge subtracts isolation bearing can provide multidirectional buffering displacement to have good shock attenuation and shock insulation performance, the anti-seismic performance of whole bridge when effectively having improved the earthquake.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a bridge subtracts isolation bearing, includes that the rigid coupling still includes two slip subassemblies in the locating plate of pier in the backup pad of bridge floor and rigid coupling, the subassembly that slides is located between backup pad and the locating plate, the subassembly that slides is including sliding base and sliding block, the base that slides be located the locating plate and with locating plate fixed connection, pile up two of setting from top to bottom the base that slides all sets up one spacing recess that slides on one side that is close to each other, and the sharp intercrossing at length direction place of two arbitrary spacing recesses that slide sets up, the level sets up a set of spring at least between the inner wall of sliding block and sliding base.
Through adopting above-mentioned technical scheme, locating plate and pier fixed connection, backup pad and bridge floor fixed connection, the displacement that the bridge floor vibration produced, conduct at least two assemblies that slide through the backup pad with power, the sliding block slides along its length direction in the spacing recess that slides, the spacing recess that slides of at least two assemblies that slide sets up the direction and does not coincide, the bridge receives the power of any direction on the horizontal plane this moment and all can be through the relative displacement of base and sliding block that slides in order to reach the purpose of unloading power, thereby the effect of shock attenuation and avoidance destructive vibration has been played.
The utility model discloses further set up to: the length directions of the two sliding limiting grooves are parallel to the horizontal plane and are perpendicular to each other, and the length direction of one sliding limiting groove is the same as the length direction of the bridge.
Through adopting above-mentioned technical scheme, according to the parallelogram rule, arbitrary ascending power can all be decomposed into the power of two not equidirectional on the coplanar, the bridge floor earthquake received most power is along the length direction of bridge floor and perpendicular to bridge floor length direction's horizontal effort, provide bridge floor and pier along bridge length direction and perpendicular to bridge floor length direction's horizontal displacement can be effectively in order to reach the purpose of unloading power, from effectively reducing the harm that the earthquake brought for the bridge, the anti-seismic performance of bridge has been improved.
The utility model discloses further set up to: a plurality of dampers are arranged between the two sliding components which are stacked up and down.
By adopting the technical scheme, the bridge deck and the piers are provided with displacement spaces which are close to and far away from each other, the component force which is applied to the bridge deck by vibration and is perpendicular to the horizontal plane is effectively removed, the component force is matched with the sliding assembly, the stress in any direction in the space can be decomposed, the bridge deck plays a role in buffering in an earthquake, the elastic-plastic deformation capacity of the piers is enhanced to dissipate earthquake energy, the influence of earthquake harm on front beams is reduced, and the earthquake resistance of the bridge is effectively enhanced.
the utility model discloses further set up to: the sliding block is provided with a plurality of first lugs and second lugs on one side away from each other, and the first lugs and the second lugs are arranged outwards along the length direction of the sliding limiting groove.
By adopting the technical scheme, under the condition of extreme external force (such as natural disasters like typhoon and earthquake), the phenomenon that the spring loses the original elastic action due to the fact that the elastic deformation of the spring caused by the external force exceeds the deformation range of the spring is reduced, so that the spring is protected, and the service life of the spring is prolonged.
The utility model discloses further set up to: the first lug is equipped with first shock pad in keeping away from one of sliding block, the second lug is equipped with the second shock pad in keeping away from one of sliding block and serving.
Through adopting above-mentioned technical scheme, the existence of first shock pad and second shock pad can reduce first lug or second lug to the impact strength of base that slides, has improved the protection dynamics to the base that slides, helps prolonging its life.
The utility model discloses further set up to: the sliding block is provided with a limiting hole along the length direction of the sliding limiting groove, a limiting rod is arranged in the limiting hole, the central part of the limiting rod is inserted into the limiting hole in a sliding mode, and two ends of the limiting rod are connected to two opposite inner walls of the sliding limiting groove respectively.
Through adopting above-mentioned technical scheme, further restrict the displacement route between sliding block position and the spacing recess that slides, prevent that sliding block or sliding block from twisting round the axis, and cause the condition emergence that the bridge subtracts isolation bearing shock attenuation effect reduces.
The utility model discloses further set up to: the spring center part is coiled on the limiting rod, and two ends of the spring are respectively connected to the sliding base and the sliding block.
Through adopting above-mentioned technical scheme, inject the elastic deformation of spring on the length direction of stop lever, be favorable to reducing the production of deformation in other directions this moment, can effectively prolong the life of spring from this.
The utility model discloses further set up to: and one end of the sliding block, which is close to the sliding limiting groove, is provided with a vibration isolation layer.
Through adopting above-mentioned technical scheme, the setting up of vibration isolation layer makes the layering that has a plurality of materials between bridge floor and the pier, and the natural frequency of different materials is different, and the frequency of resonance also can be changed in the friction between the material cross-section of difference, prevents the destructive strength that the vibration wave accumulation and produced, further reaches the effect of vibration isolation.
The utility model discloses further set up to: and a wear-resistant cushion layer is arranged at the bottom of the sliding limiting groove.
Through adopting above-mentioned technical scheme, the setting of wear-resisting bed course is favorable to increasing the frictional force between sliding block and the base that slides, turns into other energies such as heat energy with the mechanical energy of bridge vibration, consumes mechanical energy, effectively reaches the shock attenuation effect.
The utility model discloses further set up to: a plurality of screw holes are arranged on the positioning plate and the supporting plate.
Through adopting above-mentioned technical scheme, seted up a plurality of screws on locating plate and backup pad, adopt fastening bolt can be with locating plate fixed connection on the pier this moment, adopt fastening bolt also can connect the backup pad on the bridge floor steadily to guaranteed bridge floor, bridge subtract stability of shock insulation support, the triplex structure of pier on the integral connection.
To sum up, the utility model discloses following beneficial effect has:
1. The utility model can provide multidirectional buffer displacement, has good shock absorption and shock insulation performance, and effectively improves the shock resistance of the whole bridge during earthquake;
2. Optimized, the setting of wear-resisting bed course is favorable to increasing the frictional force between sliding block and the base that slides, turns into other energies such as heat energy with the mechanical energy of bridge vibration, consumes mechanical energy, effectively reaches the shock attenuation effect.
Drawings
Fig. 1 is a perspective view of one embodiment of the present invention;
fig. 2 is a schematic structural view of the sliding assembly of the present invention;
Fig. 3 is a cross-sectional view of one embodiment of the present invention.
Description of the drawings: 1. a support plate; 2. a slipping component; 3. positioning a plate; 4. a sliding base; 5. a sliding block; 6. a sliding limiting groove; 11. a spring; 12. a damper; 13. a first bump; 14. a second bump; 15. a first cushion pad; 16. a second cushion pad; 19. a limiting hole; 20. a limiting rod; 21. a vibration isolation layer; 22. a wear-resistant cushion layer; 23. and a screw hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in figure 1, the bridge seismic isolation bearing is used between a bridge deck and a bridge pier and can play a good damping role, and the bridge seismic isolation bearing sequentially comprises a supporting plate 1, two sliding assemblies 2 and a positioning plate 3 from top to bottom. Wherein, four columniform screw holes 23 have been seted up on rectangular backup pad 1, and every screw hole 23 all can adopt fastening bolt to connect and adopt cement to pour fixedly again after on the bridge floor, has also seted up four columniform screw holes 23 on rectangular locating plate 3 simultaneously, and every screw hole 23 all can adopt fastening bolt to connect and adopt cement to pour fixedly again after on the pier.
As shown in fig. 1 and 2, the above-mentioned subassembly 2 that slides includes rectangular base 4 and the sliding block 5 that slides, base 4 that slides is located locating plate 3 and adopts cement to pour with locating plate 3 and is connected, pile up two base 4 that slide that set up from top to bottom and all set up a cuboid form spacing recess 6 that slides on one side that is close to each other between two base 4 that slide, and the length direction of two spacing recesses 6 that slide all is on a parallel with the horizontal plane and mutually perpendicular sets up, the length direction of one of them spacing recess 6 that slides is unanimous with the length direction of bridge. Meanwhile, two springs 11 horizontally arranged are installed between the sliding block 5 and the inner wall of the sliding base 4, and the two springs 11 in the same group are respectively and fixedly connected to two side walls, far away from each other, of the sliding block 5.
In order to prevent the sliding block 5 from twisting around the central axis, as shown in fig. 2 and 3, the vertical section of the sliding block 5 is in an inverted T shape, the lower bottom surface of the sliding block 5 is in sliding fit with the bottom of the sliding limit groove 6, and the upper end thereof extends upwards and protrudes out of the sliding limit groove 6; meanwhile, the sliding block 5 is provided with a limiting hole 19 along the length direction of the sliding limiting groove 6, a cylindrical limiting rod 20 penetrates through the limiting hole 19, the central part of the limiting rod 20 is inserted into the limiting hole 19 in a sliding mode, and two ends of the limiting rod are connected to two opposite inner walls of the sliding limiting groove 6 respectively. Meanwhile, the central part of each spring 11 is wound on the limiting rod 20, and the two ends of each spring are respectively connected to the sliding base 4 and the sliding block 5, so that the normal movement of the sliding limiting block is effectively improved on the basis of ensuring the normal stretching or compression of the springs 11, and the phenomena of torsion and deviation are reduced.
In order to protect the spring 11, as shown in fig. 2, two first protrusions 13 and two second protrusions 14 are respectively and fixedly arranged on the sides of the sliding block 5 away from each other, and the first protrusions 13 and the second protrusions 14 in the shape of cylinders are both arranged outwards along the length direction of the sliding limiting groove 6. Therefore, under the condition of extreme external force (for example, natural disasters such as typhoon, earthquake and the like), the phenomenon that the spring 11 loses the original elastic action due to the fact that the elastic deformation of the spring 11 exceeds the deformation range of the spring can be reduced, the spring 11 is protected, and the service life of the spring 11 is prolonged. As shown in fig. 2, in order to improve the protection force for the sliding base 4, a first shock pad 15 is bonded to one end of the first projection 13 away from the sliding block 5, a second shock pad 16 is bonded to one end of the second projection 14 away from the sliding block 5, and the first shock pad 15 and the second shock pad 16 are both rubber pads. The existence of above-mentioned rubber pad can reduce the impact strength of first lug 13 or second lug 14 to the base 4 that slides, has improved the protection dynamics to the base 4 that slides, has prolonged its life.
In order to improve the seismic performance of the bridge, as shown in fig. 1, a damper 12 is bolted between two sliding assemblies 2 stacked up and down, and the damper 12 may be a spring damper.
In order to further achieve the effect of vibration isolation, as shown in fig. 3, the sliding block 5 is provided with a vibration isolation layer 21 at one end close to the sliding limiting groove 6, the vibration isolation layer 21 can be made of a rubber pad, and the rubber pad is bonded on the sliding block 5 by adopting a polyurethane adhesive, so that the diversity of the whole materials of the bridge is increased, the frequency of resonance can be changed due to the friction between the sections of different materials, the destructive force generated by the accumulation of vibration waves is prevented, and the effect of vibration isolation is further achieved.
In order to consume mechanical energy and improve the damping effect, as shown in fig. 3, a layer of wear-resistant cushion layer 22 is laid at the bottom of the sliding limiting groove 6, and the wear-resistant cushion layer 22 is provided with a plurality of strip-shaped grains (not shown in the figure), so that the friction force between the sliding block 5 and the sliding base 4 can be increased due to the existence of the wear-resistant cushion layer 22, the mechanical energy of the bridge vibration is converted into other energy such as heat energy, the mechanical energy is consumed, and the damping effect is effectively achieved.
Locating plate 3 and pier fixed connection, backup pad 1 and bridge floor fixed connection, the displacement that the bridge floor vibration produced, conduct two subassembly 2 that slide through backup pad 1 with power, the sliding block 5 slides along its length direction in the spacing recess 6 that slides, the direction mutually perpendicular is seted up to the spacing recess 6 that slides of two subassembly 2 that slide, the power that the bridge received any direction on the horizontal plane this moment all can be through the relative displacement of base 4 and sliding block 5 that slides in order to reach the purpose of unloading power, thereby the effect of shock attenuation and avoid destructive vibration has been played.
The specific embodiments are only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a bridge subtracts isolation bearing, includes that the rigid coupling still includes two subassembly (2) that slide in backup pad (1) and the rigid coupling of bridge floor in locating plate (3) of pier, its characterized in that, slide subassembly (2) and be located between backup pad (1) and locating plate (3), slide subassembly (2) including slide base (4) and sliding block (5), slide base (4) be located on locating plate (3) and with locating plate (3) fixed connection, pile up two of setting from top to bottom slide base (4) all offer one on one side that is close to each other and slide spacing recess (6), and the sharp intercrossing at the length direction place of two arbitrary spacing recesses (6) that slide sets up, at least the level sets up a set of spring (11) between the inner wall of sliding block (5) and sliding base (4).
2. the bridge seismic isolation and reduction support according to claim 1, wherein the length directions of the two sliding limiting grooves (6) are parallel to the horizontal plane and perpendicular to each other, and the length direction of one sliding limiting groove (6) is the same as the length direction of the bridge.
3. The bridge seismic isolation bearing according to claim 1 or 2, wherein a plurality of dampers (12) are arranged between two sliding assemblies (2) which are stacked up and down.
4. The bridge seismic isolation and reduction support according to claim 1, wherein the sliding block (5) is provided with a plurality of first protrusions (13) and second protrusions (14) on one sides far away from each other, and the first protrusions (13) and the second protrusions (14) are arranged outwards along the length direction of the sliding limiting groove (6).
5. The bridge seismic isolation bearing according to claim 4, wherein the first bump (13) is provided with a first damping pad (15) at one end far away from the sliding block (5), and the second bump (14) is provided with a second damping pad (16) at one end far away from the sliding block (5).
6. The bridge seismic isolation and reduction support according to claim 1, wherein the sliding block (5) is provided with a limiting hole (19) along the length direction of the sliding limiting groove (6), a limiting rod (20) is arranged in the limiting hole (19), the central part of the limiting rod (20) is inserted in the limiting hole (19) in a sliding manner, and two ends of the limiting rod are respectively connected to two opposite inner walls of the sliding limiting groove (6).
7. The bridge seismic isolation bearing according to claim 6, wherein the spring (11) is wound on a limiting rod (20) at the central part, and two ends of the spring are respectively connected to the sliding base (4) and the sliding block (5).
8. The bridge seismic isolation and reduction support according to claim 1, wherein the sliding block (5) is provided with a vibration isolation layer (21) at one end close to the sliding limiting groove (6).
9. the bridge seismic isolation bearing according to claim 1, wherein the bottom of the sliding limiting groove (6) is provided with a wear-resistant cushion layer (22).
10. The bridge seismic isolation bearing according to claim 9, wherein the positioning plate (3) and the supporting plate (1) are provided with a plurality of screw holes (23).
CN201920205464.4U 2019-02-16 2019-02-16 Bridge subtracts isolation bearing Expired - Fee Related CN209779436U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920205464.4U CN209779436U (en) 2019-02-16 2019-02-16 Bridge subtracts isolation bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920205464.4U CN209779436U (en) 2019-02-16 2019-02-16 Bridge subtracts isolation bearing

Publications (1)

Publication Number Publication Date
CN209779436U true CN209779436U (en) 2019-12-13

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111411575A (en) * 2020-03-16 2020-07-14 邢台路桥建设总公司 Road and bridge shock-absorbing support and mounting method thereof
CN112095457A (en) * 2020-10-13 2020-12-18 河南城建学院 Bridge beam supports that can stably install and stable in structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111411575A (en) * 2020-03-16 2020-07-14 邢台路桥建设总公司 Road and bridge shock-absorbing support and mounting method thereof
CN112095457A (en) * 2020-10-13 2020-12-18 河南城建学院 Bridge beam supports that can stably install and stable in structure

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20191213

Termination date: 20220216

CF01 Termination of patent right due to non-payment of annual fee