CN207987718U - A kind of enclosure-type girder falling laminated rubber bearing - Google Patents
A kind of enclosure-type girder falling laminated rubber bearing Download PDFInfo
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- CN207987718U CN207987718U CN201721870659.8U CN201721870659U CN207987718U CN 207987718 U CN207987718 U CN 207987718U CN 201721870659 U CN201721870659 U CN 201721870659U CN 207987718 U CN207987718 U CN 207987718U
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Abstract
The utility model discloses a kind of enclosure-type girder falling laminated rubber bearings, including upper base plate and lower seat board, the upper base plate includes top plate, it encloses equipped with upper enclosing the bottom surface of the top plate, several first bolts are connected across top plate with bridge superstructure, and the lower plate includes bottom plate, and the top surface of the bottom plate is enclosed equipped with lower enclosing, several second bolts are connected across bottom plate with bridge substructure, and the bearing being made of rubber slab is socketed between the bottom plate and top plate.The utility model advantageous effect：Ensure that bridge meets force request under normal operation stage and geological process; the seismic response of bridge is reduced by the flexible deformation of bearing and sliding displacement under rarely occurred earthquake effect; and it is limited by enclosing and excessive earthquake relative displacement occurs between girder and bridge pier, abutment; bearing can not only be protected; and the probability for falling the generation of beam risk is reduced, ensure the safety of bridge.
Description
Technical field
The utility model is related to technical field of bridge, it particularly relates to a kind of anti-fall beam and slab type rubber of enclosure-type
Bearing.
Background technology
Laminated rubber bearing is the support style being most widely used in science of bridge building, can effectively transmit superstructure
Vertical effect and horizontal force, can also adapt to the horizontal displacement and rotation of superstructure, meanwhile, laminated rubber bearing or one
The ideal shock isolating pedestal of kind, can reduce the geological process for reaching superstructure；It should be noted, however, that board-like rubber branch
Seat does not have limit function.Under geological process, when the horizontal displacement of laminated rubber bearing is more than its allowable strain, bearing meeting
Expendable slide displacement occurs with superstructure or substructure, superstructure is caused to be detached from from bearing, and then occurs
Fall beam destruction.
All previous earthquake discloses, although laminated rubber bearing can effectively reduce the seismic response of superstructure, reduce bridge
The stress of pile foundation, but the beam earthquake that falls caused by excessive displacement makes these advantages all gone.This is because
It is a kind of catastrophic, expendable, extremely serious earthquake of secondary disaster to fall beam.
How restrainer, be that Bridge Design Shi Wubi is solved the problems, such as, one of solution be exactly be arranged girder falling dress
It sets.Currently, common anti-fall girder apparatus has drag-line class anti-fall girder apparatus, chain class anti-fall girder apparatus, block class anti-fall girder apparatus
Deng, however, these anti-fall girder apparatus only have a girder falling function of a horizontal direction, and when another horizontal direction occur compared with
When violent earthquake displacement, which is possible to fail.Therefore, it is necessary to be re-recognized to anti-fall girder apparatus.Seimic disaster census is found, is generated
The basic reason for falling beam is that excessive relative deformation occurs between the structure of upper and lower part, is that excessive change has occurred in bearing after all
Shape, therefore, the essential measure of girder falling are to ensure the deformation of bearing within permissible range.That is, bearing must have
Limit function.Described in the prior art, pot bearing and spherical bearing have carried out girder falling design, but for having a large capacity and a wide range
Laminated rubber bearing, girder falling design it is still at an early stage.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Utility model content
For above-mentioned technical problem in the related technology, the utility model proposes a kind of anti-fall beam and slab type rubber branch of enclosure-type
Seat can not only protect bearing, and reduce the probability for falling the generation of beam risk, ensure the safety of bridge.
To realize the above-mentioned technical purpose, the technical solution of the utility model is realized in：
A kind of enclosure-type girder falling laminated rubber bearing, including upper base plate and lower seat board, the upper base plate include top plate, institute
The bottom surface for stating top plate is enclosed equipped with upper enclosing, and several first bolts are connected across top plate with bridge superstructure, the lower seat board
Including bottom plate, the top surface of the bottom plate is enclosed equipped with lower enclosing, and several second bolts are connected across bottom plate with bridge substructure,
The bearing being made of rubber slab is socketed between the bottom plate and top plate.
Further, for the holder top in the range of upper enclosing surrounds, the rest base is embedded in lower enclosing
In the range of surrounding.
Further, the height of the lower enclosing is more than the height of upper enclosing.
Further, the quadrangle of the top plate is equipped with the first bolt.
Further, the quadrangle of the bottom plate is equipped with the second bolt.
The beneficial effects of the utility model：Ensure that bridge meets force request under normal operation stage and geological process,
The seismic response of bridge is reduced by the flexible deformation of bearing and sliding displacement under rarely occurred earthquake effect, and is limited by enclosing
Excessive earthquake relative displacement occurs between girder and bridge pier, abutment, bearing can not only be protected, and reduces and falls the generation of beam risk
Probability, ensure the earthquake safety of bridge.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the enclosure-type girder falling laminated rubber bearing according to the utility model embodiment；
Fig. 2 is the upward view of the enclosure-type girder falling laminated rubber bearing according to the utility model embodiment；
Fig. 3 is the vertical view of the enclosure-type girder falling laminated rubber bearing according to the utility model embodiment.
In figure：1, the first bolt；2, top plate；3, upper enclosing；4, bearing；5, the second bolt；6, bottom plate；7, lower enclosing.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, the every other embodiment that those of ordinary skill in the art are obtained all belongs to
In the range of the utility model protection.
As shown in Figs. 1-3, a kind of enclosure-type girder falling laminated rubber bearing according to the utility model embodiment, packet
Upper base plate and lower seat board are included, the upper base plate includes top plate 2, and upper enclosing 3 is closed within the scope of 2 bottom surface of top plate to be whole, with top
Plate 2 is connected as one, and several first bolts 1 are connected across top plate 2 with bridge superstructure, and the lower seat board includes bottom plate 6,
It is whole that lower enclosing 7 is closed within the scope of 6 top surface of bottom plate, is connected as one with bottom plate 6, several second bolts 5 pass through bottom plate 6 with
Bridge substructure is connected, and the bearing 4 being made of rubber slab of putting more energy into is socketed between the bottom plate 6 and top plate 2.In addition,
It can make upper base plate and lower seat board setting out of position, upper base plate is connected with bridge substructure, and on lower seat board and bridge
Portion's structure is connected, and can equally protect bearing using this scheme, and reduce the probability for falling the generation of beam risk, ensure the ground of bridge
Shake safety.
In a specific embodiment of the utility model, 4 top of the bearing is embedded in the range that upper enclosing 3 is surrounded
Interior, 4 bottom of the bearing is in the range of lower enclosing 7 surrounds, when the horizontal displacement that bearing 4 occurs is more than its Admissible displacement
Afterwards, upper enclosing 3 offsets with lower enclosing 7, and limiting displacement further increases.
In a specific embodiment of the utility model, the height of the lower enclosing 7 is more than the height of upper enclosing 3.
In a specific embodiment of the utility model, the quadrangle of the top plate 2 is equipped with the first bolt 1, keeps its whole
Body structure is more firm.
In a specific embodiment of the utility model, the quadrangle of the bottom plate 6, which is equipped with the second bolt 5, makes its entirety
Structure is more firm.
In order to facilitate the above-mentioned technical proposal of the utility model is understood, below by way of new to this practicality in specifically used mode
The above-mentioned technical proposal of type is described in detail.
When specifically used, according to enclosure-type girder falling laminated rubber bearing described in the utility model, in normal use
Under stage and design geological process, only bearing 4 plays a role, and horizontal force is resisted by the frictional resistance of bearing 4 and bottom plate 6, according to
By the shear-deformable resistance horizontal displacement of bearing 4；Under rarely occurred earthquake effect, when the horizontal shear that bearing 4 is subject to is rubbed more than it
When resistance, bearing 4 starts to slide, and relative displacement, dissipation seismic energy, when relative displacement increases occur between bearing 4 and bottom plate 6
When to a certain extent, upper enclosing 3 is contacted with lower enclosing 7, limits further increasing for displacement, plays the effect of girder falling.
In conclusion by means of the above-mentioned technical proposal of the utility model, ensure bridge in normal operation stage and earthquake
Meet force request under effect, reduces the earthquake of bridge by the flexible deformation of bearing and sliding displacement under rarely occurred earthquake effect
Response, and limited by enclosing and excessive earthquake relative displacement occurs between girder and bridge pier, abutment, bearing can not only be protected,
And the probability for falling the generation of beam risk is reduced, ensure the safety of bridge.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (5)
1. a kind of enclosure-type girder falling laminated rubber bearing, including upper base plate and lower seat board, which is characterized in that the upper base plate packet
Top plate (2) is included, the bottom surface of the top plate (2) is enclosed equipped with upper enclosing (3), and several first bolts (1) pass through on top plate (2) and bridge
Portion's structure is connected, and the lower seat board includes bottom plate (6), and the top surface of the bottom plate (6) is enclosed equipped with lower enclosing (7), and several second
Bolt (5) is connected across bottom plate (6) with bridge substructure, is socketed with by rubber slab between the bottom plate (6) and top plate (2)
The bearing (4) of composition.
2. enclosure-type girder falling laminated rubber bearing according to claim 1, which is characterized in that at the top of the bearing (4)
In the range of upper enclosing (3) surrounds, bearing (4) bottom is in the range of lower enclosing (7) surrounds.
3. enclosure-type girder falling laminated rubber bearing according to claim 1, which is characterized in that the lower enclosing (7)
Height is more than the height of upper enclosing (3).
4. enclosure-type girder falling laminated rubber bearing according to claim 1, which is characterized in that the four of the top plate (2)
Angle is equipped with the first bolt (1).
5. according to claim 1-4 any one of them enclosure-type girder falling laminated rubber bearings, which is characterized in that the bottom plate
(6) quadrangle is equipped with the second bolt (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721870659.8U CN207987718U (en) | 2017-12-28 | 2017-12-28 | A kind of enclosure-type girder falling laminated rubber bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721870659.8U CN207987718U (en) | 2017-12-28 | 2017-12-28 | A kind of enclosure-type girder falling laminated rubber bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207987718U true CN207987718U (en) | 2018-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721870659.8U Active CN207987718U (en) | 2017-12-28 | 2017-12-28 | A kind of enclosure-type girder falling laminated rubber bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086142A (en) * | 2017-12-28 | 2018-05-29 | 中交公路养护工程技术有限公司 | A kind of enclosure-type girder falling laminated rubber bearing |
-
2017
- 2017-12-28 CN CN201721870659.8U patent/CN207987718U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086142A (en) * | 2017-12-28 | 2018-05-29 | 中交公路养护工程技术有限公司 | A kind of enclosure-type girder falling laminated rubber bearing |
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