CN206143625U - Subtract isolation structure - Google Patents
Subtract isolation structure Download PDFInfo
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- CN206143625U CN206143625U CN201621127046.0U CN201621127046U CN206143625U CN 206143625 U CN206143625 U CN 206143625U CN 201621127046 U CN201621127046 U CN 201621127046U CN 206143625 U CN206143625 U CN 206143625U
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- rubber support
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- steel plate
- bearing
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Abstract
The utility model provides a subtract isolation structure belongs to bridge engineering technical field for solve the shock insulation mode that subtracts of beam bridge or have the problem that the shock attenuation effect is unsatisfactory or the cost is high. This structure includes that a plurality of intervals set up on the bridge, a plurality of spherical support between the substructure, at least one rubber support interval side by side sets up between adjacent spherical support, rubber support is the cushion from top to bottom in proper order, rubber support body and lower cushion, the top and the bottom of rubber support body are equipped with respectively, the undersetting steel sheet, on, the undersetting steel sheet with correspond, be equipped with respectively between the cushion down, lower cushion steel sheet, on, the cushion steel sheet is imbedded down, down in the cushion.
Description
Technical field
This utility model is related to technical field of bridge engineering, more particularly to a kind of seismic isolation and reduction structure.
Background technology
Continuous bridge refer to two across or two more than continuous beam bridge, belong to statically indeterminate system.Continuous beam is made in permanent mobile load
With under, the fulcrum hogging moment of generation plays the role of unloading to positive moment of span central point, makes internal force status more reasonable than more uniform, thus deck-molding
Can reduce, it is possible thereby to increase under-clearance, material-saving, and rigidity is big, good integrity, overload capacity is big, and degree of safety is big,
Deck expansion joint is few, and because the moment of flexure of spaning middle section reduces so that spanning can increase.But the low pier continuous beam of large span
Bridge is short due to superstructure beam body weight, bridge pier, and under seismic force effects, substructure can bear very big horizontal earthquake power, can
Energy can cause bearing to be cut off, the danger that beam body slides.In order to avoid aforementioned dangerous generation, it will usually bridge bottom is significantly increased
Structural material consumption is taken and subtracts isolation measure.Construction costs can be significantly increased due to increasing bridge substructure material, thus it is logical
Often take and subtract isolation measure.
Mainly have following two to the isolation measure that subtracts of large-span continuous girder bridges at present：
1) it is can only to reduce anchor block using the major defect of this anti-shock methods using antivibrator or lock-up devices
Longitudinal seismic response, and there is a problem of antivibrator or lock-up devices durability not enough and curing requirements are high.Work as seismic force
When larger, even if seismic force by 2 or multiple main pier shareds, also may cannot meet Seismic Design Requirements.
2) vibration absorption and isolation support is adopted, at present the main vibration absorption and isolation support for adopting has lead core rubber support and hyperboloid to subtract shock insulation
Bearing.Due to the vertical load that lead core rubber support can bear it is less, it is difficult to apply in large-span continuous girder bridges；Hyperboloid
Vibration absorption and isolation support can reduce vertical bridge to direction across bridge earthquake response, but large-tonnage hyperboloid vibration absorption and isolation support size is big, steel using amount
Many, cost is higher.
Therefore, how to provide a kind of earthquake that can mitigate the low pier superstructure of continuous beam bridge of large span to substructure to make
Firmly, beam body horizontal displacement is controlled, and structurally simple, economical rational seismic isolation and reduction structure is those skilled in the art's urgent need to resolve
Technical problem.
Utility model content
Subtracting shock insulation mode or have that damping effect is undesirable or cost is high for the low pier continuous bridge of current large span
Problem, this utility model provides a kind of simple structure, cost-effective seismic isolation and reduction structure, to reduce bridge superstructure to bottom
The geological process power of structure, and control beam body horizontal displacement.
This utility model solves the technical scheme that its technical problem adopted：
A kind of seismic isolation and reduction structure, including some some spherical bearings being arranged at intervals between the structure of bridge upper and lower part, extremely
A few rubber support spacing side by side is arranged between the adjacent spherical bearing, and the rubber support is from top to bottom followed successively by
Upper cushion block, rubber support body and lower cushion block, the top and bottom of the rubber support body are respectively equipped with upper and lower bearing steel
Plate, between the upper and lower bearing steel plate and the corresponding upper and lower cushion block upper and lower cushion block steel plate, upper and lower cushion block are respectively equipped with
Steel plate is imbedded in upper and lower cushion block.
Further, the upper and lower cushion block steel plate respectively with the corresponding upper and lower bearing steel plate bolt connection or welding
Connection.
Further, the spherical bearing is non-Anti-seismic bearing.
Further, the rubber support body is laminated rubber bearing.
Further, the rubber support by thereon, undersetting steel plate is fixedly connected with bridge upper and lower part structure.
Compared with prior art, the beneficial effects of the utility model are：
The seismic isolation and reduction structure that this utility model is provided, the interval setting spherical bearing between the structure of bridge upper and lower part, and
Intert side by side between spherical bearing and rubber support is set, when an earthquake occurs, geological process power cuts off the ball-type for bearing vertical force
Bearing, now, rubber support is firmly arranged between the upper and lower structure of bridge so that rubber support and spherical bearing bear jointly
Horizontal seismic force, so as to play control beam bridge horizontal displacement, the destruction for preventing horizontal seismic force from causing to continuous bridge.Additionally,
Both rubber support and spherical bearing stress clearly, it is simple structure, easy for installation, cost is saved, so as to the seismic isolation and reduction structure
With boundless application prospect.
Description of the drawings
Fig. 1 is the structural representation of the seismic isolation and reduction structure of the embodiment of this utility model one.
In figure：11- bridge superstructures；12- bridge substructures；20- spherical bearings；30- rubber support bodies；31-
Upper bracket steel plate；32- undersetting steel plates；The upper cushion blocks of 41-；42- lower cushion blocks；The upper cushion block steel plates of 43-；44- lower cushion block steel plates.
Specific embodiment
Below in conjunction with the drawings and specific embodiments pair the utility model proposes a kind of seismic isolation and reduction structure make further in detail
Explanation.According to description below, advantages and features of the present utility model will become apparent from.Hereinafter will be combined by cited embodiment
Accompanying drawing, describes technology contents of the present utility model and feature in detail.Need to illustrate in addition, accompanying drawing is using very simplified shape
Formula and non-accurately ratio is used, only to purpose that is convenient, lucidly aiding in illustrating this utility model embodiment.For narration
It is convenient, it is described below " on ", the upper and lower direction of D score and accompanying drawing it is consistent, but this can not become this utility model technology
The restriction of scheme.
Embodiment one
Refer to Fig. 1, a kind of seismic isolation and reduction structure, including some be arranged at intervals between bridge upper and lower part structure (11,12)
Some spherical bearings 20, at least one rubber support (not shown) spacing side by side is arranged between adjacent spherical bearing 20,
Rubber support is from top to bottom followed successively by cushion block 41, rubber support body 30 and lower cushion block 42, the top of rubber support body 30
End and bottom are respectively equipped with upper and lower bearing steel plate (31,32), upper and lower bearing steel plate (31,32) and corresponding upper and lower cushion block
Be respectively equipped with upper and lower cushion block steel plate (43,44) between (41,42), upper and lower cushion block steel plate (43,44) imbed upper and lower cushion block (41,
42) in.Specifically, by arranging multiple ball-types between the upper and lower part structure of the low pier continuous bridge of large span (11,12)
Seat 20, can bear vertical seismic force.However, to bigger horizontal earthquakes of building destruction such as the low pier continuous bridges of large span
It is unaffordable that power relies solely on spherical bearing 20.Therefore, in the face of foregoing problems, can be between adjacent spherical bearing 20
The multiple rubber supports that can resist horizontal seismic force of interval setting so that rubber support body 30 and upper and lower bearing steel plate
(31,32) are fixedly connected, it is ensured that spherical bearing 20 is had no progeny under geological process power, rubber support body 30 and upper and lower
There is no relative slip between seat steel plate (31,32), so as to rubber support and spherical bearing 20 bear horizontal force jointly, to play
Control beam bridge beam body horizontal displacement, the effect for preventing horizontal seismic force from damaging to building.And, rubber support and ball-type
Both bearings stress clearly, it is simple structure, easy for installation, save cost.
It is preferred that in order to further prevent rubber support from producing slip, it is ensured that the effect of control beam body horizontal displacement, upper,
Lower cushion block steel plate (43,44) is welded to connect or bolts connection, upper and lower cushion block with corresponding upper and lower bearing steel plate (31,32) respectively
Steel plate (43,44) is fixedly connected with upper and lower cushion block (41,42).
It is preferred that spherical bearing is non-Anti-seismic bearing, it is not necessary to bear very big horizontal force, so as to simplify ball-type
The construction of seat, reduces spherical bearing size, reduces manufacture and the installation cost of spherical bearing.
It is preferred that rubber support body 30 is plate-type laminated rubber bearing, simple structure, low production cost are conveniently replaceable.
It is preferred that in order to ensure firmly installing property, rubber support by thereon, lower cushion block steel plate anchor is set on (43,44)
Gu reinforcing bar is fixedly connected with bridge upper and lower part structure (11,12).
Please continue to refer to Fig. 1, the present embodiment also discloses the side that damping is carried out using seismic isolation and reduction structure of the present utility model
Method, it is as follows that the method comprising the steps of：
Step one：Spherical bearing 20 and rubber support are fixedly connected between bridge upper and lower part structure (11,12), and are made
Obtain spherical bearing 20 and rubber support spacing side by side is arranged；
Step 2：When earthquake generation and side force exceed horizontal earthquake force threshold, spherical bearing 20 is cut off, rubber
There is no relative slip in the upper and lower bearing steel plate (31,32) at seat and lower two ends disposed thereon, so as to rubber support and spherical bearing
20 bear horizontal force jointly, reduce geological process power, control beam bridge beam body horizontal displacement are realized, so as to prevent horizontal earthquake
The destruction that power is produced to the low pier continuous bridge of large span.
Foregoing description is only the description to this utility model preferred embodiment, not to any limit of this utility model scope
Calmly, the those of ordinary skill in this utility model field does according to the disclosure above content any change, modification, belonging to right will
Seek the protection domain of book.
Claims (5)
1. a kind of seismic isolation and reduction structure, including some some spherical bearings being arranged at intervals between the structure of bridge upper and lower part, it is special
Levy and be, at least one rubber support spacing side by side is arranged between the adjacent spherical bearing, and the rubber support is by upper
Upper cushion block, rubber support body and lower cushion block are followed successively by under, the top and bottom of the rubber support body are respectively equipped with
Upper and lower bearing steel plate, between the upper and lower bearing steel plate and the corresponding upper and lower cushion block upper and lower cushion block steel is respectively equipped with
Plate, the upper and lower cushion block steel plate is imbedded in the upper and lower cushion block.
2. seismic isolation and reduction structure according to claim 1, it is characterised in that the upper and lower cushion block steel plate respectively with it is corresponding
The upper and lower bearing steel plate bolt connection is welded to connect.
3. seismic isolation and reduction structure according to claim 1, it is characterised in that the spherical bearing is non-Anti-seismic bearing.
4. seismic isolation and reduction structure according to claim 1, it is characterised in that the rubber support body is plate-type laminated rubber
Bearing.
5. seismic isolation and reduction structure according to claim 1, it is characterised in that the rubber support by thereon, undersetting steel
Plate is fixedly connected with bridge upper and lower part structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621127046.0U CN206143625U (en) | 2016-10-17 | 2016-10-17 | Subtract isolation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621127046.0U CN206143625U (en) | 2016-10-17 | 2016-10-17 | Subtract isolation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206143625U true CN206143625U (en) | 2017-05-03 |
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ID=58621763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621127046.0U Active CN206143625U (en) | 2016-10-17 | 2016-10-17 | Subtract isolation structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN206143625U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351118A (en) * | 2016-10-17 | 2017-01-25 | 上海市政工程设计研究总院（集团）有限公司 | Earthquake isolation and reduction structure and earthquake reduction method thereof |
| CN111962709A (en) * | 2020-09-11 | 2020-11-20 | 广州大学 | Shock insulation support with strong bearing capacity and convenient replacement |
-
2016
- 2016-10-17 CN CN201621127046.0U patent/CN206143625U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351118A (en) * | 2016-10-17 | 2017-01-25 | 上海市政工程设计研究总院（集团）有限公司 | Earthquake isolation and reduction structure and earthquake reduction method thereof |
| CN111962709A (en) * | 2020-09-11 | 2020-11-20 | 广州大学 | Shock insulation support with strong bearing capacity and convenient replacement |
| CN111962709B (en) * | 2020-09-11 | 2021-09-24 | 广州大学 | Shock insulation support with strong bearing capacity and convenient replacement |
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