CN203393605U - Variable-curvature self-adaptive friction pendulum seismic mitigation and absorption support - Google Patents
Variable-curvature self-adaptive friction pendulum seismic mitigation and absorption support Download PDFInfo
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- CN203393605U CN203393605U CN201320320671.7U CN201320320671U CN203393605U CN 203393605 U CN203393605 U CN 203393605U CN 201320320671 U CN201320320671 U CN 201320320671U CN 203393605 U CN203393605 U CN 203393605U
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Abstract
The utility model relates to a variable-curvature self-adaptive friction pendulum seismic mitigation and absorption support. A seismic absorption period of a friction pendulum support adopted in the field of bridge construction is determined once the spherical radius is determined, but the fixed period results in poorer adaptive capacity of a structure. The variable-curvature self-adaptive friction pendulum seismic mitigation and absorption support is provided with a bispherical lining plate, wherein an upper support plate and a base are arranged at the upper part and the lower part of the bispherical lining plate, slide block components are arranged on the lower surface of the bispherical lining plate, and a limiting plate fixed on the base and guide bar components are arranged at the periphery of the upper support plate; and two curved surface friction pairs are formed among the upper support plate, the bispherical lining plate and a variable-curvature bottom plate. According to the variable-curvature self-adaptive friction pendulum seismic mitigation and absorption support, resonance of the traditional friction pendulum support is overcame by adopting a variable-curvature surface; reliable contact between relational structures of the support with different curvature radiuses and the friction surface contact adaptivity are achieved through the slide block components, and the problem of local stress concentration is avoided; and the seismic mitigation and absorption function separation under the normal working condition and the earthquake working condition is achieved, the stress is stable and reliable, the beam falling is avoided, and the multistage protective seismic mitigation and absorption effect is obvious.
Description
Technical field
the utility model belongs to bridge and subtracts seismic isolation technology field, is specifically related to a kind of variable curvature adaptive friction pendulum-type vibration absorption and isolation support.
Background technology
In recent years, along with taking place frequently of global earthquakes, how engineering structures realizes the great attention that antidetonation mitigation obtains people.In bridge engineering field, for overcoming the deficiency of traditional structure anti-seismic technology, shock insulation, damping control technology are to improve the effective way of structural seismic performance.At present, adopt both at home and abroad mostly vibration absorption and isolation support to carry out extending structure natural vibration period, dissipate and be input to the seismic energy of superstructure, and obtained good economic and social benefit.In " Seismic Design of Highway Bridges detailed rules and regulations " (JTG/T B02-01-2008) of Department of Transportation's issue, the monolithic devices seismic isolation device of recommendation has: lead core rubber support, high-damp rubber support, friction pendulum vibration absorption and isolation support.Wherein friction pendulum vibration absorption and isolation support, owing to having the hyposensitivity of seismic stimulation frequency range, high life and high stability, stronger from spacing and reset capability and the combination property such as good shock insulation and energy dissipating mechanism, becomes the vibration absorption and isolation support most with development prospect gradually.And the traditional friction pendulum vibration absorption and isolation support of current domestic employing, once spherical radius determine, its shock insulation cycle also determines thereupon, and at nearly tomography often with long period impulse type seismic wave, easily and structure resonate; On the other hand, although in some patent document, propose to utilize variable curvature mode to eliminate the covibration that Long-period Seismic brings, but on different radius of curvature slide planes, sliding friction pair is partial points contact, easily produces larger stress and concentrates, and has a strong impact on bearing application life.
Utility model content
The purpose of this utility model is to provide a kind of variable curvature adaptive friction pendulum-type vibration absorption and isolation support, can utilize variable curvature to eliminate the covibration that Long-period Seismic brings, can utilize again slide block assembly to realize the reliable contact of holocyclic self adaptation and self-resetting capability, while restrainer, and multistage protection damping and isolation effect is provided.
The technical scheme that the utility model adopts is:
An adaptive friction pendulum-type vibration absorption and isolation support, is characterized in that:
Described bearing is provided with two sphere liner plates, the upper sphere top of two sphere liner plates be provided with its on the upper bracket plate that adapts of spherical shape, the lower peripheral surface bottom of two sphere liner plates is provided with the base adapting with its lower peripheral surface shape;
Between the lower peripheral surface of two sphere liner plates and base, be provided with corrosion resistant plate, the top of this corrosion resistant plate is provided with some slide block assemblies, and some slide block assemblies are embedded in the densely covered groove of two sphere liner plate lower peripheral surfaces;
Upper bracket plate ring week is provided with the limiting plate being fixed on base.
On the upper sphere of described two sphere liner plates, be provided with corrosion resistant plate, between upper bracket plate and this corrosion resistant plate, be provided with slide plate, slide plate ring week is provided with sealing ring.
The spherical curve of described base can be iso-curvature circular curve, hyperbolicity curve, elliptic curve or other variable curvature curves, and sphere circumferencial direction arranges round ring boss.
Described limiting plate is divided into four parts, relative between two, all by shear studs, is fixed on the round ring boss of base edge, and the edge shape of limiting plate and round ring boss edge adapt;
Shear studs is connected by chain or wire rope screw assembly with limiting plate, and limiting plate is connected by chain or wire rope screw assembly with base;
Wire rope is connected upper bracket plate by upper anchoring assembly and lower anchoring assembly with base.
Described slide block assembly is followed successively by slide block assembly steel plate and the slide block assembly slide plate of columniform deformation block, cydariform from top to bottom;
Wherein, deformation block bottom part ring week and slide block assembly slide plate ring week be provided with slide block assembly sealing ring.
Described slide block assembly is followed successively by slide block assembly ball impression liner plate, curved slide block assembly slide plate, the slide block assembly liner plate of hemisphere shape and the slide block assembly slide plate of base plane shape that columniform deformation block, bottom surface are concave spherical surface from top to bottom;
Wherein, the slide block assembly slide plate of curved slide block assembly slide plate and base plane shape is provided with slide block assembly sealing ring.
Four limits that described limiting plate is relative with upper bracket plate are provided with gib block assembly;
Gib block assembly comprises guiding corrosion resistant plate, gib block, connection pin and guide pad;
Wherein, guide pad is fixed on limiting plate by some connection pins, and the face that guide pad is relative with limiting plate is arc-shaped surface, and another slidingsurface is provided with gib block; Guiding corrosion resistant plate is arranged on upper bracket Ban side;
End, guide pad two ends is provided with chain or wire rope screw assembly, is connected on limiting plate.
In described upper bracket plate and one of them direction, between relative two limiting plates, leave the gap that meets unidirectional design displacement, and between relative two limiting plates, be provided with gib block assembly on other direction;
Gib block assembly comprises guiding corrosion resistant plate, gib block, connection pin and guide pad;
Wherein, guide pad is fixed on limiting plate by connecting pin, and the face that guide pad is relative with limiting plate is circular arc, and another slidingsurface is provided with gib block, and guiding corrosion resistant plate is arranged on upper bracket Ban side.
On described upper bracket plate and both direction, between relative two groups of limiting plates, all leave the gap that meets design displacement.
Described upper bracket plate and encircle between all limiting plates and be provided with and be less than 1mm gap.
The utlity model has following advantage:
The utility model adopts surfaces varying in curvature both to overcome the resonance problem of traditional friction pendulum support, greatly weakens again the beam body lifting problem under conventional displacement; Adopt slide block assembly to improve rubbing surface contact adaptivity, realize the reliable contact at different curvature radius undersetting dependency structure, avoid occurring the problem of stress raisers; The shear studs arranging can realize nominal situation and under earthquake operating mode, to subtract shock insulation function separated, gib block assembly can be separated with rotation by sliding, and caducous part connects when chain or wire rope screw assembly are set earthquake, prevent the seismic secondary disaster producing because of bearing, overall structure is made a distinction between the important and the lesser one, the coordinating and unifying, power transmission clear route, stability under loading is reliable, restrainer, and the damping and isolation effect of multistage protection is obvious.
Accompanying drawing explanation
Fig. 1 is structural representation fixed of the present utility model (front view);
Fig. 2 is structural representation fixed of the present utility model (top view);
Fig. 3 is benzvalene form slide block assembly structural representation of the present utility model;
Fig. 4 is combined sliding block modular construction schematic diagram of the present utility model;
Fig. 5 is gib block modular construction schematic diagram of the present utility model;
Fig. 6 is gib block modular construction chain of the present utility model or wire rope screw assembly figure;
Fig. 7 is embodiment 2 one-way slide types of the present utility model (front view);
Fig. 8 is embodiment 2 one-way slide types of the present utility model (top view);
Fig. 9 is embodiment 3 bi-directional sliding-types of the present utility model (front view);
Figure 10 is embodiment 3 bi-directional sliding-types of the present utility model (top view);
Figure 11 is embodiment 4 iso-curvature friction pendulum supports (front view) of the present utility model;
Figure 12 is embodiment 4 iso-curvature friction pendulum supports (plan view) of the present utility model;
In figure, the upper anchoring assembly of 1-, 2-wire rope, 3-upper bracket plate, the two sphere liner plates of 4-, 5-slide block assembly, 6-base, anchoring assembly under 7-, 8-slide plate, 9-gib block assembly, 10-limiting plate, 11-chain or wire rope screw assembly, 12-shear studs, 13-sealing ring, 14-corrosion resistant plate, 15-deformation block, 16-slide block assembly steel plate, 17-slide block assembly sealing ring, 18-slide block assembly slide plate, 19-slide block assembly ball impression liner plate, 20-slide block assembly liner plate, 21-guiding corrosion resistant plate, 22-gib block, 23-connects pin, 24-guide pad.
The specific embodiment
Below in conjunction with the specific embodiment, the utility model is described in detail.
Variable curvature adaptive friction pendulum-type vibration absorption and isolation support described in the utility model, be provided with two sphere liner plates 4, the upper sphere top of two sphere liner plates 4 be provided with its on the upper bracket plate 3 that adapts of spherical shape, the lower peripheral surface bottom of two sphere liner plates 4 is provided with the base 6 adapting with its lower peripheral surface shape.The sphere of base 6 increases progressively from middle mind-set edge curvature, and center curvature compare great ， edge curvature is less.3 ring weeks of upper bracket plate are provided with the limiting plate 10 being fixed on base 6, and limiting plate 10 is divided into four parts, relative between two, all by shear studs 12, is fixed on the round ring boss at base 6 edges, and edge shape and the round ring boss of limiting plate 10 adapt.
On the upper sphere of two sphere liner plates 4, be provided with corrosion resistant plate 14, between upper bracket plate and this corrosion resistant plate 14, be provided with slide plate 8, slide plate 8 rings are provided with sealing ring 13 week.Between the lower peripheral surface of two sphere liner plates 4 and base 6, be provided with corrosion resistant plate 14, the top of this corrosion resistant plate 14 is provided with some slide block assemblies 5, and slide block assembly 5 is embedded in the densely covered groove of two sphere liner plate 4 lower peripheral surfaces.
(1) referring to the benzvalene form form of structure of Fig. 3, slide block assembly 5 is followed successively by slide block assembly steel plate 16 and the slide block assembly slide plate 18 of columniform deformation block 15, cydariform from top to bottom; Wherein, 15 bottom part ring weeks of deformation block and slide block assembly slide plate 18 rings are provided with slide block assembly sealing ring 17 week.
(2) referring to the combined support form of Fig. 4, slide block assembly 5 is followed successively by the slide block assembly ball impression liner plate 19 that columniform deformation block 15, bottom surface is concave spherical surface, curved slide block assembly slide plate 18, the slide block assembly liner plate 17 of hemisphere shape and the slide block assembly slide plate 18 of base plane shape from top to bottom; Wherein, the slide block assembly slide plate 18 of curved slide block assembly slide plate 18 and base plane shape is provided with slide block assembly sealing ring 17.
The deformable material of deformation block 15 has rotation and compression performance, can adopt butterfly spring, rubber, macromolecular material, nylon material etc., adaptivity contact and Self-resetting function that compressive strain or rotation by material realizes different curvature radius undersetting rubbing surface, avoid stress raisers problem.
During earthquake, shear studs 12 will be cut off and be caused that limiting plate 10 and guide pad 24 come off, for fear of the secondary disaster of therefore bringing, shear studs 12 is connected with limiting plate 10 use chains or wire rope screw assembly 11, and limiting plate 10 is connected with base 6 use chains or wire rope screw assembly 11; For the bearing that has gib block assembly 9, guide pad 24 is connected with chain or wire rope screw assembly 11 that limiting plate 10 arranges by guide pad 24 ends, two ends.
Meanwhile, for restrainer occurs, by connecting steel wire ropes 2 between upper anchoring assembly 1 and lower anchoring assembly 7, upper bracket plate 3 is connected with base 6.
In summary, between upper bracket plate 3 and two sphere liner plate 4, by corrosion resistant plate 14, slide plate 8 and sealing ring 13, formed sliding friction pair, between two sphere liner plates 4 and base 6, by corrosion resistant plate 14 and slide block assembly slide plate 18, formed variable curvature friction pair, when this two suites face friction pair works to realize bearing function individually or simultaneously, smooth slip and the rotation of bearing have effectively been guaranteed, effectively avoided the resonance problem of traditional bearing, connect and arrange reliably, can effectively prevent secondary disaster and the Luo Liang of earthquake.
According to the gap form between upper bracket plate 3 and limiting plate 10, bearing described in the utility model has three kinds of form of structure:
(1) referring to the fixed structure of Fig. 1 and Fig. 2, upper bracket plate 3 and encircle between all limiting plates 10 and be provided with gib block assembly 9, upper bracket plate 3 and encircle between all limiting plates 10 and be provided with and be less than 1mm gap.Referring to Fig. 5, gib block assembly 9 comprises guiding corrosion resistant plate 21, gib block 22 and is connected pin 23 and guide pad 24.Wherein, guide pad 24 is fixed on limiting plate 10 by connecting pin 23, and the face that guide pad is relative with limiting plate is circular arc, and another slidingsurface is provided with gib block, and guiding corrosion resistant plate 21 is arranged in the sidewall of upper bracket plate 3.Under nominal situation, limiting plate 10 restriction bases 6 move, the arc end of guide pad 24 adapts to the corner of bearing, gib block 22 and corrosion resistant plate 21 can meet the requirement that bearing vertically slides to material property and function, and when meeting earthquake, shear studs 12 is cut off dissipation seismic energy, and realize variable curvature damping and isolation effect, reached the multistage protection damping and isolation effect of friction pendulum support, in extreme displacement situation, the boss of base surrounding plays anti-fall beam action.
(2) referring to the one-way slide type structure of Fig. 7 and Fig. 8, in upper bracket plate 3 and one of them direction, between relative two limiting plates 10, leave the gap that meets unidirectional design displacement, and between relative two limiting plates 10, be provided with gib block assembly 9 on other direction.This form of structure is applicable to direction across bridge or vertical bridge to the situation of design displacement.Under nominal situation, the monodisplacement of limiting plate 10 restriction variable curvature support plates 6, slides along guidance set in another direction, and meets the corner requirement of bearing; When meeting earthquake, shear studs 12 is cut off power consumption seismic energy, and realizes variable curvature damping effect, has reached the multistage protection damping and isolation effect of friction pendulum support, and in extreme displacement situation, the boss of base surrounding plays anti-fall beam action.
(3) referring to the bi-directional sliding-type structure of Fig. 9 and Figure 10, on upper bracket plate 3 and both direction, between relative two groups of limiting plates 10, all leave the gap that meets design displacement, be applicable to the situation of bi-directional design displacement, specific works situation is identical with one-way slide type variable curvature adaptive friction pendulum-type vibration absorption and isolation support.
(4) referring to the iso-curvature friction pendulum fixed structure of Figure 11 and Figure 12, the spherical radius of base 6 is constant, the two sphere liner plates 4 lower peripheral surface radiuses that adapt are with it identical with base, between two sphere liner plates 4 and base 6, corrosion resistant plate 14 is only set, all the other structures are identical with the structure shown in Fig. 1 and Fig. 2, accordingly by regulating the distance between upper bracket plate 3 and limiting plate 10 can develop into one-way slide type and bi-directional sliding-type structure.
It is cited that content of the present utility model is not limited to embodiment, and the conversion of any equivalence that those of ordinary skills take technical solutions of the utility model by reading the utility model manual, is claim of the present utility model and contains.
Claims (10)
1. a variable curvature adaptive friction pendulum-type vibration absorption and isolation support, it is characterized in that: described bearing is provided with two sphere liner plates (4), the upper sphere top of two sphere liner plates (4) be provided with its on the upper bracket plate (3) that adapts of spherical shape, the lower peripheral surface bottom of two sphere liner plates (4) is provided with the base (6) adapting with its lower peripheral surface shape;
Between the lower peripheral surface of two sphere liner plates (4) and base (6), be provided with corrosion resistant plate (14), the top of this corrosion resistant plate (14) is provided with some slide block assemblies (5), and some slide block assemblies (5) are embedded in the densely covered groove of two sphere liner plate (4) lower peripheral surfaces;
Upper bracket plate (3) ring is provided with the limiting plate (10) being fixed on base (6) week.
2. a kind of variable curvature adaptive friction pendulum-type vibration absorption and isolation support according to claim 1, it is characterized in that: on the upper sphere of described two sphere liner plates (4), be provided with corrosion resistant plate (14), between upper bracket plate and this corrosion resistant plate (14), be provided with slide plate (8), slide plate (8) ring is provided with sealing ring (13) week.
3. a kind of variable curvature adaptive friction pendulum-type vibration absorption and isolation support according to claim 2, it is characterized in that: the spherical curve of described base (6) is iso-curvature circular curve, hyperbolicity curve or elliptic curve, and sphere circumferencial direction arranges round ring boss.
4. a kind of variable curvature adaptive friction pendulum-type vibration absorption and isolation support according to claim 3, it is characterized in that: described limiting plate (10) is divided into four parts, relative between two, all by shear studs (12), be fixed on the round ring boss at base (6) edge, edge shape and the round ring boss edge of limiting plate (10) adapt;
Shear studs (12) is connected by chain or wire rope screw assembly (11) with limiting plate (10), and limiting plate (10) is connected by chain or wire rope screw assembly (11) with base (6);
Wire rope (2) is connected upper bracket plate (3) by upper anchoring assembly (1) and lower anchoring assembly (7) with base (6).
5. a kind of variable curvature adaptive friction pendulum-type vibration absorption and isolation support according to claim 4, is characterized in that: described slide block assembly (5) is followed successively by slide block assembly steel plate (16) and the slide block assembly slide plate (18) of columniform deformation block (15), cydariform from top to bottom;
Wherein, deformation block (15) bottom part ring week and slide block assembly slide plate (18) ring are provided with slide block assembly sealing ring (17) week.
6. a kind of variable curvature adaptive friction pendulum-type vibration absorption and isolation support according to claim 4, is characterized in that: described slide block assembly (5) is followed successively by slide block assembly ball impression liner plate (19), curved slide block assembly slide plate (18), the slide block assembly liner plate (20) of hemisphere shape and the slide block assembly slide plate (18) of base plane shape that columniform deformation block (15), bottom surface are concave spherical surface from top to bottom;
Wherein, the slide block assembly slide plate (18) of curved slide block assembly slide plate (18) and base plane shape is provided with slide block assembly sealing ring (17).
7. according to a kind of variable curvature adaptive friction pendulum-type vibration absorption and isolation support described in claim 5 or 6, it is characterized in that: four limits that described limiting plate (10) is relative with upper bracket plate (3) are provided with gib block assembly (9);
Gib block assembly (9) comprises guiding corrosion resistant plate (21), gib block (22), connects pin (23) and guide pad (24);
Wherein, it is upper that guide pad (24) is fixed on limiting plate (10) by some connection pins (23), and the face that guide pad (24) is relative with limiting plate (10) is arc-shaped surface, and another slidingsurface is provided with gib block (22); Guiding corrosion resistant plate (21) is arranged on the side of upper bracket plate (3);
Guide pad (24) end, two ends is provided with chain or wire rope screw assembly (11), is connected on limiting plate (10).
8. according to a kind of variable curvature adaptive friction pendulum-type vibration absorption and isolation support described in claim 5 or 6, it is characterized in that: in described upper bracket plate (3) and one of them direction, between relative two limiting plates (10), leave the gap that meets unidirectional design displacement, and between relative two limiting plates (10), be provided with gib block assembly (9) on other direction;
Gib block assembly (9) comprises guiding corrosion resistant plate (21), gib block (22), connects pin (23) and guide pad (24);
Wherein, guide pad (24) is fixed on limiting plate (10) by connecting pin (23), the face that guide pad (24) is relative with limiting plate (10) is circular arc, and another slidingsurface is provided with gib block (22), and guiding corrosion resistant plate (21) is arranged on the side of upper bracket plate (3).
9. according to a kind of variable curvature adaptive friction pendulum-type vibration absorption and isolation support described in claim 5 or 6, it is characterized in that: on described upper bracket plate (3) and both direction, between relative two groups of limiting plates (10), all leave the gap that meets design displacement.
10. a kind of variable curvature adaptive friction pendulum-type vibration absorption and isolation support according to claim 7, is characterized in that: between described upper bracket plate (3) and all limiting plates of ring (10), be provided with and be less than 1mm gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320320671.7U CN203393605U (en) | 2013-06-05 | 2013-06-05 | Variable-curvature self-adaptive friction pendulum seismic mitigation and absorption support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320320671.7U CN203393605U (en) | 2013-06-05 | 2013-06-05 | Variable-curvature self-adaptive friction pendulum seismic mitigation and absorption support |
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| CN203393605U true CN203393605U (en) | 2014-01-15 |
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| CN201320320671.7U Withdrawn - After Issue CN203393605U (en) | 2013-06-05 | 2013-06-05 | Variable-curvature self-adaptive friction pendulum seismic mitigation and absorption support |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243644A (en) * | 2013-06-05 | 2013-08-14 | 西安中交土木科技有限公司 | Variable-curvature self-adaptive friction pendulum seismic mitigation and absorption bearing |
| CN103835226A (en) * | 2014-03-21 | 2014-06-04 | 北京市市政工程设计研究总院有限公司 | Plane curve girder bridge creeping-preventing limiting device |
| CN104032834A (en) * | 2014-06-05 | 2014-09-10 | 南京工业大学 | Friction pendulum support equipped with annular steel plates |
| CN109371825A (en) * | 2018-10-31 | 2019-02-22 | 重庆交通大学 | Novel damping energy dissipating support |
| CN114718981A (en) * | 2022-03-22 | 2022-07-08 | 广州大学 | Eddy current damping three-dimensional damping device utilizing bridge ballast block |
-
2013
- 2013-06-05 CN CN201320320671.7U patent/CN203393605U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243644A (en) * | 2013-06-05 | 2013-08-14 | 西安中交土木科技有限公司 | Variable-curvature self-adaptive friction pendulum seismic mitigation and absorption bearing |
| CN103243644B (en) * | 2013-06-05 | 2015-06-17 | 西安中交土木科技有限公司 | Variable-curvature self-adaptive friction pendulum seismic mitigation and absorption bearing |
| CN103835226A (en) * | 2014-03-21 | 2014-06-04 | 北京市市政工程设计研究总院有限公司 | Plane curve girder bridge creeping-preventing limiting device |
| CN104032834A (en) * | 2014-06-05 | 2014-09-10 | 南京工业大学 | Friction pendulum support equipped with annular steel plates |
| CN109371825A (en) * | 2018-10-31 | 2019-02-22 | 重庆交通大学 | Novel damping energy dissipating support |
| CN114718981A (en) * | 2022-03-22 | 2022-07-08 | 广州大学 | Eddy current damping three-dimensional damping device utilizing bridge ballast block |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140115 Effective date of abandoning: 20150617 |
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| RGAV | Abandon patent right to avoid regrant |