CN108360372B - One kind having horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device - Google Patents
One kind having horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device Download PDFInfo
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- CN108360372B CN108360372B CN201810158950.5A CN201810158950A CN108360372B CN 108360372 B CN108360372 B CN 108360372B CN 201810158950 A CN201810158950 A CN 201810158950A CN 108360372 B CN108360372 B CN 108360372B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/041—Elastomeric bearings
Abstract
The invention discloses one kind to have horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device, is related to isolation bridge vibration damping field, which includes upper bearing sheet, connecting plate, polytetrafluoroethylene (PTFE) sliding layer, lower cushion cap plate, horizontal seismic isolation component and vertical vibration isolation device；The present invention can carry out effective shock insulation vibration damping under vibrational excitation for bridge pad, overcome that traditional rubber isolator each level rigidity is consistent and rigidity is immutable, and damping force is single, is unsatisfactory for the defect of the anisotropic rigidity requirement of level of bridge pad；The different isolating affection of horizontal both direction can be achieved in the present invention, and rigidity and damping are variable under friction speed load, can effectively play energy consumption and shock resistance effect, and total mounting height is low, easy to make.
Description
Technical field
The present invention relates to isolation bridge antivibration areas, and in particular to is based on shear thickening materials to a kind of, has water
Flat opposite sex rigidity and anti-impact characteristic isolation bridge device.
Background technique
Support not only needs to consider supporting role in science of bridge building or other industry, should more consider in vibrator bar
The shock insulation damping effect of part undersetting, and should consider that bridge is having high speed traveling load, support displacement of the suitable bridge to generation.And
In earthquake, each level of wide bridge seat can all have biggish vibratory response.Bridge pier or beam body are brought in order to reduce vibration
Influence, various shock insulation vibration damping means come into being, and seismic isolation technology is as one of vibration control field, different from traditional
With rigid gram of rigid anti-seismic technology, frequently with rubber support as Seismic Isolation of Isolation Layer in engineering, horizontal rigidity is lower, passes through extending structure
The acceleration responsive of structure can be reduced natural vibration period.But rubber support each level rigidity is consistent and damping force is single and bridge
Suitable bridge be often different to direction across bridge rigidity, leading to its dynamic respons under traffic load or geological process is all not
With, required each level isolating affection is also different.
There is scholar to propose a kind of friction pendulum support, by the design of sliding surface come the natural vibration period of extending structure, and passes through
Friction carrys out earthquake energy.Existing friction pendulum support has the disadvantage that: limit steel loop need to be designed at support, load is larger, by
Power is complicated；Rubbing surface is mostly hemisphere face, and processing difficulties are at high cost；Vibration frequency is single, is not able to satisfy rigidity-variable vibration-isolating and anti-impact
Hit demand.
In recent years, shear thickening materials use more and more, shear thickening mud (Shear on seismic isolation technology
Thickening Plastomers, abbreviation STP) it is the viscoelastic material haveing excellent performance, overcome shear thickening liquid (STF) no
Stablize, it is easily settled, difficult defect is encapsulated, while possessing the excellent mechanical performance of STF.With the increase of strain rate, STP is by class
Liquid becomes class solid-state, and big energy can be absorbed in phase transition process, and rigidity can also improve, and have good impact resistance
Energy.
Disclosed in Chinese patent (application number 201420050258.8) " friction pendulum subtracts shock insulation spherical bearing ", pass through friction pendulum
Susceptor design can realize unidirectional damping by friction or bi-directional friction damping, but it is single to be limited in vibration frequency, lack vertical earthquake isolating energy
Power.Disclosed in Chinese patent (application number 201620798469.9) " a kind of three-dimensional isolation/vibration support of the quasi- zero stiffness characteristic of band "
It is able to achieve three-dimensional isolation by the concatenated design of friction pendulum and disk spring, but that there are still vibration frequencies is single, construction is complicated, adds
The problems such as work is difficult.
Summary of the invention
For technical problem of the existing technology, the present invention designs one kind and has horizontal anisotropic rigidity and anti-impact characteristic bridge
Beam isolator is designed by structure compared with existing highway bridge isolator so that level needed for the device has bridge pad is different
Property rigidity characteristic, while shear thickening mud introducing so that the device have for low speed when rigidity it is lower, meet its displacement
It is required that rigidity rises to when high speed, larger damping force is provided, there is energy consumption and shock proof characteristic.
The present invention is achieved by following technical solution:
One kind has horizontal anisotropic rigidity and an anti-impact characteristic isolation bridge device, the vibration isolator include upper bearing sheet, connecting plate,
Polytetrafluoroethylene (PTFE) sliding layer, lower cushion cap plate, horizontal seismic isolation component and vertical vibration isolation device；
Several vertical vibration isolation devices and horizontal seismic isolation component are provided between the upper bearing sheet and lower cushion cap plate；
The vertical vibration isolation device is used to support bearing sheet and lower cushion cap plate；And vertical vibration isolation device is symmetrically evenly arranged on cushion cap
Plate and lower cushion cap plate surrounding；The horizontal seismic isolation component is arranged in upper bearing sheet and lower cushion cap plate center；
The vertical vibration isolation device includes upper junction plate, guide post, elastic rubber and lower connecting plate；The upper junction plate passes through
Guide post is connect with lower connecting plate；The guide post is two, and guide post is connected by elastic rubber；The upper bearing sheet bottom
There is polytetrafluoroethylene (PTFE) sliding layer between face and upper junction plate；The lower cushion cap plate is detachably connected with lower connecting plate；
The horizontal seismic isolation component include arthrodia, high-damping rubber interlayer, friction plate, polytetrafluoroethylene material layer,
STP interlayer, limit plate, rigid rod, caging bolt and stephanoporate steel plate；
STP interlayer and stephanoporate steel plate are provided between described two friction plates；The friction plate and stephanoporate steel plate pass through rigid
Property bar connection；It is adjusted by the caging bolt on rigid rod elastic between friction plate；
Symmetrical friction plate symmetrically divides before and after the structure that the friction plate, STP interlayer, stephanoporate steel plate and rigid rod form
Cloth, and the board ends that rub are arranged in limit plate；The limit plate is connect with lower cushion cap crab bolt；Symmetrical friction plate it
Between be provided with arthrodia；High-damping rubber interlayer is provided between arthrodia；One end of the arthrodia and connecting plate
It is bolted；The other end of the connecting plate is detachably connected with upper bearing sheet.
Further, the high-damping rubber interlayer is inlayed by way of vulcanization is fixed in arthrodia.
Further, polytetrafluoroethylene material layer is adhesive on the friction plate and arthrodia contact surface.
Further, the polytetrafluoroethylene material layer is bolted on friction plate.
Further, the stephanoporate steel plate is welded on rigid rod.
Further, the friction plate surrounding is provided with sealing element, which is used to seal friction plate.
Further, the sealing element includes upper seal, lower seal, limit plate, left sealing element and right sealing element.
Further, the elastic rubber is arranged between two guide posts by vulcanization.
Further, the polytetrafluoroethylene (PTFE) sliding layer is adhesive on bearing sheet, to realize that vertical vibration isolation device edge is above held
Platen lower surface moves horizontally.
Further, the STP sandwich material is shear thickening mud.
Compared with prior art, the invention has the following advantages that
1, the present invention is consistent for existing rubber isolator each level rigidity and horizontal bidirectional needed for bridge pad is rigid
Degree is different with isolating affection, by friction plate and arthrodial design, has reached the different isolating affections of horizontal bidirectional, to list
There is better adaptability to horizontal earthquake action, also there is preferable isolating affection to double horizontal seismic action.
2, the present invention is immutable for existing isolation bridge device rigidity, the problem that damping force is single, adaptability is not strong,
STP interlayer, mechanical property nonlinear change with the variation of strain rate are added in friction plate, when low speed meets its displacement and wants
It asks, when high speed provides larger damping force, and acts synergistically with steel, and dissipate a large amount of vibrational energies.Rigidity-variable vibration-isolating can be reached,
Play the role of energy consumption and it is shock proof.
3, the present invention the most vertical rigidity of existing isolator and horizontal rigidity is inseparable open up meter aiming at the problem that, using water
Flat shock insulation component is placed side by side with vertical vibration isolation device, and realizes the horizontal decoupling with vertical motion, make horizontal rigidity and it is vertical just
Degree can be separated and be designed.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for having horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device of the present invention；
Fig. 2 is the horizontal seismic isolation assembly plan view in Fig. 1 of the present invention；
Fig. 3 is the stephanoporate steel plate structural schematic diagram in Fig. 1 of the present invention；
Fig. 4 is schematic top plan view of the invention.
Appended drawing reference is as follows:
The upper bearing sheet of 1-；2- connecting plate；3- arthrodia；4- high-damping rubber interlayer；5- friction plate；6- polytetrafluoroethylene (PTFE)
Material layer；7- upper seal；8-STP interlayer；9- lower seal；10- limit plate；The left sealing element of 11-；The right sealing element of 12-；13-
Rigid rod；14- caging bolt；15- stephanoporate steel plate；16- upper junction plate；17- guide post；18- elastic rubber；19- lower connecting plate；
20- polytetrafluoroethylene (PTFE) sliding layer；21- lower cushion cap plate；22- bolt hole；23- horizontal seismic isolation component；24- vertical vibration isolation device.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings:
Have horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device in conjunction with the attached one kind shown in fig. 1 and 4 of the present invention, it should be every
Vibration device includes upper bearing sheet 1, connecting plate 2, polytetrafluoroethylene (PTFE) sliding layer 20, lower cushion cap plate 21, horizontal seismic isolation component 23 and vertical
Vibration isolator 24；Several vertical vibration isolation devices 24 and horizontal seismic isolation component 23 are provided between the upper bearing sheet 1 and lower cushion cap plate 21；
The vertical vibration isolation device 24 is used to support bearing sheet 1 and lower cushion cap plate 21；And vertical vibration isolation device 24 is symmetrically uniformly distributed
In upper bearing sheet 1 and 21 surrounding of lower cushion cap plate；The setting of horizontal seismic isolation component 23 is in upper bearing sheet 1 and lower cushion cap plate 21
The heart；
The vertical vibration isolation device 24 includes upper junction plate 16, guide post 17, elastic rubber 18 and lower connecting plate 19；On described
Connecting plate 16 is connect by guide post 17 with lower connecting plate 19；The guide post 17 is two, and guide post 17 passes through elastic rubber
18 connections；There is polytetrafluoroethylene (PTFE) sliding layer 20 between 1 bottom surface of upper bearing sheet and upper junction plate 16；The lower cushion cap plate 21
It is detachably connected with lower connecting plate 19；
Attached drawing 2 of the present invention be horizontal seismic isolation component structure diagram, the horizontal seismic isolation component 23 include arthrodia 3,
High-damping rubber interlayer 4, friction plate 5, polytetrafluoroethylene material layer 6, STP interlayer 8, limit plate 10, rigid rod 13, caging bolt
14 and stephanoporate steel plate 15；
STP interlayer 8 and stephanoporate steel plate 15 are provided between described two friction plates 5；The friction plate 5 and stephanoporate steel plate 15
It is connected by rigid rod 13；It is adjusted by the caging bolt 14 on rigid rod 13 elastic between friction plate 5；
The friction plate 5 is symmetrical, and 5 both ends of friction plate are arranged in limit plate 10；The limit plate 10 is held under
Platen 21 is bolted；Arthrodia 3 is provided between symmetrical friction plate 5；High-damping is provided between arthrodia 3
Rubber interlayer 4；One end of the arthrodia 3 and connecting plate 2 is bolted；The other end of the connecting plate 2 and upper bearing sheet 1
It is detachably connected.
It is fixedly connected specifically, upper bearing sheet 1 passes through the form of inlaying and be subject to bolt with connecting plate 2, connecting plate 2 and sliding
Joint 3, which passes through the form of inlaying and is subject to bolt, to be fixedly connected；High-damping rubber interlayer 4 inlays fixation by high temperature vulcanized mode
In arthrodia 3；Polytetrafluoroethylene material layer 6 is by being adhesive in the contact surface of friction plate 5 and arthrodia 3 after surface treatment
On, and fixed in surrounding with bolt；Friction plate 5 is connect with limit plate 10 by the form of inlaying, while limit plate 10 is under
Bearing sheet 21 passes through the form of inlaying and is bolted；The rigid rod 13 and caging bolt 14 at 5 center of friction plate constitute solid
Determine part, stephanoporate steel plate 15 is fixed by welding on rigid rod 13；Sealing element all passes through seal groove and is fixed on 5 surrounding of friction plate；
Arthrodia 3, high-damping rubber interlayer 4, friction plate 5, polytetrafluoroethylene material layer 6, upper seal 7, STP interlayer 8, lower sealing
Part 9, limit plate 10, left sealing element 11, right sealing element 12, rigid rod 13, caging bolt 14, stephanoporate steel plate 15 be combined into it is horizontal every
Component 23 is shaken, horizontal seismic isolation assembly plan view is shown in that attached drawing 2, stephanoporate steel plate 15 are shown in Fig. 3；Vertical vibration isolation device 24 by upper junction plate 16,
Guide post 17, elastic rubber 18, lower connecting plate 19 form, lower end lower connecting plate 19 and lower cushion cap plate 21 by the form of inlaying simultaneously
It is bolted, elastic rubber 18 is fixed between guide post 17 by high temperature vulcanized, upper connection at the top of vertical vibration isolation device 24
There are gap and on the contact surface using polytetrafluoroethylene (PTFE) sliding layer 20, polytetrafluoroethylene (PTFE) sliding between plate 16 and upper bearing sheet 1
Layer 20 guarantees that its translation is unrestricted by being adhesive on bearing sheet 1 after surface treatment.Upper bearing sheet 1 and lower cushion cap plate 21
A certain number of bolts hole 22 are reserved with, it is convenient to be connect with external structure.
Working principle
The isolator for having adaptive multiband damping and isolation effect of the invention includes upper bearing sheet 1,21 and of lower cushion cap plate
The horizontal seismic isolation component 23 and multiple vertical vibration isolation devices 24 being arranged in juxtaposition between upper and lower bearing sheet；When horizontal vibration occurs, on
Bearing sheet 1 drives arthrodia 3 to carry out sliding energy consumption between friction plate 5 by connecting plate 2, and arthrodia 3 can also squeeze height
Damping rubber interlayer 4 carries out a part of energy consumption.Another horizontal direction can be consumed energy by the bending deformation of friction plate 5, horizontal
Two direction isolating affections it is inconsistent to bridge pad under unidirectional horizontal earthquake action better adaptability, while friction plate 5 is right
The restriction effect of arthrodia 3 makes it also have preferable isolating affection under double horizontal seismic action.The friction plate 5 has
STP interlayer 8, STP interlayer 8 is very fast to strain rate response, and STP sandwich material is fluid-like state, speed liter in the case of low speed vibration
Gao Hou, strain rate increase, and rapidly to class Solid State Transformation, viscosity limits the variation of 5 curvature of friction plate, give STP at non-linear increase
Arthrodia 3 provides biggish damping force.The stephanoporate steel plate 15 being arranged in STP interlayer 8 by fixing piece, makes STP interlayer 8 exist
The effect of shear thickening is improved when flowing in friction plate 5.The excellent plastic deformation ability of friction plate steel and STP phase indicator
The viscoelastic sexual behaviour synergistic effect revealed, dissipate big energy in vibration.Big earthquake situations condition lower limiting board 10 is shaking structure greatly
Excessive displacement does not occur for situation, to guarantee the safety of structure.
It is adopted there are gap and on the contact surface between 24 top upper junction plate 16 of vertical vibration isolation device and upper bearing sheet 1 of the present invention
With polytetrafluoroethylene (PTFE) sliding layer 20, polytetrafluoroethylene (PTFE) sliding layer 20 guarantees it by being adhesive on bearing sheet 1 after surface treatment
It being translatable unrestricted, realizes the horizontal mobile decoupling with vertical both direction, bearing capacity is mainly undertaken by vertical vibration isolation device 24,
Horizontal seismic isolation component 23 does not undertake bearing capacity, only responsible horizontal direction shock insulation, make this isolator horizontal rigidity and vertical rigidity without
It closes, can accurately adjust.
The embodiment is a preferred embodiment of the present invention, but present invention is not limited to the embodiments described above, not
In the case where substantive content of the invention, any conspicuous improvement that those skilled in the art can make, replacement
Or modification all belongs to the scope of protection of the present invention.
Claims (10)
1. one kind has horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device, which is characterized in that including upper bearing sheet (1), even
Fishplate bar (2), polytetrafluoroethylene (PTFE) sliding layer (20), lower cushion cap plate (21), horizontal seismic isolation component (23) and vertical vibration isolation device (24)；
Several vertical vibration isolation devices (24) and horizontal seismic isolation component are provided between the upper bearing sheet (1) and lower cushion cap plate (21)
(23)；
The vertical vibration isolation device (24) is symmetrically evenly arranged on bearing sheet (1) and lower cushion cap plate (21) surrounding；The horizontal seismic isolation group
Part (23) is arranged in upper bearing sheet (1) and lower cushion cap plate (21) center；
The vertical vibration isolation device (24) includes upper junction plate (16), guide post (17), elastic rubber (18) and lower connecting plate (19)；
The upper junction plate (16) is connect by guide post (17) with lower connecting plate (19)；The guide post (17) is two, and two are led
Xiang Zhu (17) is connected by elastic rubber (18) in-between；Between upper bearing sheet (1) bottom surface and upper junction plate (16)
It is provided with polytetrafluoroethylene (PTFE) sliding layer (20)；The lower cushion cap plate (21) is detachably connected with lower connecting plate (19)；
The horizontal seismic isolation component (23) includes arthrodia (3), high-damping rubber interlayer (4), friction plate (5), polytetrafluoroethyl-ne
Alkene material layer (6), STP interlayer (8), limit plate (10), rigid rod (13), caging bolt (14) and stephanoporate steel plate (15)；
STP interlayer (8) and stephanoporate steel plate (15) are provided between two pieces of friction plates (5)；The friction plate (5) and Multi-hole steel
Plate (15) is connected by rigid rod (13)；Pass through the pine between caging bolt (14) adjustment friction plate (5) on rigid rod (13)
Tightly；
It is symmetrical before and after the structure that the friction plate (5), STP interlayer (8), stephanoporate steel plate (15) and rigid rod (13) form,
And the setting of friction plate (5) both ends is in limit plate (10)；The limit plate (10) is bolted with lower cushion cap plate (21)；Symmetrical point
Arthrodia (3) are provided between the friction plate (5) of cloth；High-damping rubber interlayer is provided between the arthrodia (3)
(4)；The arthrodia (3) and one end of connecting plate (2) are bolted；The other end and upper bearing sheet of the connecting plate (2)
(1) it is detachably connected.
2. according to claim 1 have horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device, which is characterized in that described
High-damping rubber interlayer (4) is inlayed by way of vulcanization to be fixed in arthrodia (3).
3. according to claim 1 have horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device, which is characterized in that described
Polytetrafluoroethylene material layer (6) are adhesive on friction plate (5) and arthrodia (3) contact surface.
4. according to claim 3 have horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device, which is characterized in that described
Polytetrafluoroethylene material layer (6) is bolted on friction plate (5).
5. according to claim 1 have horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device, which is characterized in that described
Stephanoporate steel plate (15) is welded on rigid rod (13).
6. according to claim 1 have horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device, which is characterized in that described
Friction plate (5) surrounding is provided with sealing element, which is used to seal friction plate (5).
7. according to claim 6 have horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device, which is characterized in that described
Sealing element includes upper seal (7), lower seal (9), limit plate (10), left sealing element (11) and right sealing element (12).
8. according to claim 1 have horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device, which is characterized in that described
Elastic rubber (18) is arranged between two guide posts (17) by vulcanization.
9. according to claim 1 have horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device, which is characterized in that described
Polytetrafluoroethylene (PTFE) sliding layer (20) is adhesive on bearing sheet (1), to realize vertical vibration isolation device (24) along upper bearing sheet (1) following table
Face moves horizontally.
10. one kind according to claim 1 has horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device, feature exist
In STP interlayer (8) material is shear thickening mud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810158950.5A CN108360372B (en) | 2018-02-26 | 2018-02-26 | One kind having horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810158950.5A CN108360372B (en) | 2018-02-26 | 2018-02-26 | One kind having horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device |
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| Publication Number | Publication Date |
|---|---|
| CN108360372A CN108360372A (en) | 2018-08-03 |
| CN108360372B true CN108360372B (en) | 2019-06-28 |
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| CN201810158950.5A Active CN108360372B (en) | 2018-02-26 | 2018-02-26 | One kind having horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798310B (en) * | 2019-01-15 | 2021-01-15 | 江苏大学 | Sectional type intelligent shock isolator with anti-impact characteristic |
| CN109555009B (en) * | 2019-01-24 | 2023-08-15 | 湖南中腾土木工程技术有限公司 | Support and beam body shock absorption and insulation structure system and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3946527B2 (en) * | 2002-01-10 | 2007-07-18 | 株式会社カイモン | Function change repair method for existing elastic bearings |
| CN204401794U (en) * | 2015-01-20 | 2015-06-17 | 衡水震泰隔震器材有限公司 | Anti-overturn shock insulation rubber support |
| CN204510510U (en) * | 2015-01-29 | 2015-07-29 | 中南大学 | Multidimensional vibration absorption and isolation support |
| CN106835947B (en) * | 2017-02-10 | 2018-10-09 | 北京工业大学 | Multidimensional vibration reduction device is detained containing the suspension bridge center of viscoplasticity dissipative member and metal-rubber |
| CN107190638A (en) * | 2017-06-20 | 2017-09-22 | 同济大学 | A kind of three-dimensional isolation bearing with runback bit function |
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