CN106351118A - Earthquake isolation and reduction structure and earthquake reduction method thereof - Google Patents
Earthquake isolation and reduction structure and earthquake reduction method thereof Download PDFInfo
- Publication number
- CN106351118A CN106351118A CN201610903776.3A CN201610903776A CN106351118A CN 106351118 A CN106351118 A CN 106351118A CN 201610903776 A CN201610903776 A CN 201610903776A CN 106351118 A CN106351118 A CN 106351118A
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- Prior art keywords
- rubber support
- cushion block
- bridge
- steel plate
- bearing
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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
- E01D19/042—Mechanical bearings
- E01D19/046—Spherical bearings
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides an earthquake isolation and reduction structure and an earthquake reduction method thereof, belongs to the technical field of bridge engineering and aims to solve the problem that the conventional earthquake isolation and reduction method is unsatisfactory in earthquake reduction effect or high in manufacturing cost. The structure comprises a plurality of spherical support seats and rubber support seats which are arranged between an upper structure and a lower structure of a bridge at intervals, wherein each rubber support seat comprises an upper cushion block, a rubber support seat body and a lower cushion block which are successively arranged from top to bottom; an upper support seat steel plate and a lower support seat steel plate are arranged at the top end and the bottom end of each rubber support seat body respectively; upper cushion block steel plates and lower cushion block steel plates are arranged between the upper and lower support seat steel plates and the corresponding upper and lower cushion blocks respectively; the upper and lower cushion block steel plates are embedded in the upper and lower cushion blocks. The earthquake reduction method comprises the following steps: firstly fixedly connecting the spherical support seats and the rubber support seats between the upper structure and the lower structure of the bridge, arranging the spherical support seats and the rubber support seats at intervals in parallel; then shearing off the spherical support seats when the earthquake occurs, enabling the rubber support seats to bear the horizontal force so as to control the horizontal displacement of a bridge body.
Description
Technical field
The present invention relates to technical field of bridge engineering, particularly to a kind of seismic isolation and reduction structure and its shock-dampening method.
Background technology
Continuous bridge refer to two across or two across continuous beam bridge above, 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, make internal force status than more uniform rationally, thus deck-molding
Can reduce, thus can increase under-clearance, material-saving, and rigidity greatly, 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 large span low pier continuous beam
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 lead to bearing to be cut off, the danger of beam body landing.In order to avoid aforementioned dangerous generation is it will usually be significantly increased bridge bottom
Structural material consumption or take and subtract isolation measure.Construction costs can be significantly increased due to increasing bridge substructure material, thus logical
Often take and subtract isolation measure.
At present to large-span continuous girder bridges subtract isolation measure mainly have following two:
1) antivibrator or lock-up device are adopted, the major defect using this anti-shock methods is to reduce anchor block
Longitudinal seismic response, and there is antivibrator or lock-up device durability not and curing requirements are high.Work as seismic force
When larger, even if seismic force, by 2 or multiple main pier shared, also may cannot meet Seismic Design Requirements；
2) adopt vibration absorption and isolation support, the main vibration absorption and isolation support adopting has lead core rubber support and hyperboloid to subtract shock insulation at present
Bearing.Because the vertical load that lead core rubber support can bear is less, it is difficult to application 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 large span low pier superstructure of continuous beam bridge that can mitigate that the earthquake of substructure is made
Firmly, control beam body horizontal displacement, and structurally simple, economical rational seismic isolation and reduction structure is those skilled in the art's urgent need to resolve
Technical problem.
Content of the invention
Subtracting shock insulation mode or having that damping effect is undesirable or cost is high for current large span low pier continuous bridge
Problem, the present invention provides a kind of simple, the cost-effective seismic isolation and reduction structure of structure and shock-dampening method, to reduce bridge superstructure
Geological process power to substructure, and control beam body horizontal displacement.
The technical solution adopted for the present invention to solve the technical problems is:
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 adjacent described spherical bearing, and described rubber support is from top to bottom followed successively by
Upper cushion block, rubber support body and lower cushion block, the top of described rubber support body and bottom are respectively equipped with upper and lower bearing steel
Plate, is respectively equipped with upper and lower cushion block steel plate, upper and lower cushion block between described upper and lower bearing steel plate and corresponding described upper and lower cushion block
Steel plate is imbedded in upper and lower cushion block.
Further, described upper and lower cushion block steel plate respectively with corresponding described upper and lower bearing steel plate bolt connection or welding
Connect.
Further, described spherical bearing is non-Anti-seismic bearing.
Further, described rubber support body is plate-type laminated rubber bearing.
Further, described rubber support by thereon, undersetting steel plate is fixedly connected with bridge upper and lower part structure.
The invention also discloses a kind of shock-dampening method of continuous bridge, comprise the steps:
Step one: be fixedly connected spherical bearing and rubber support between the structure of bridge upper and lower part, and make spherical bearing
With the setting of rubber support spacing side by side；
Step 2: when earthquake generation and when side force exceedes horizontal earthquake force threshold, spherical bearing is cut off, rubber support
With the upper and lower bearing steel plate positioned at its upper and lower ends do not occur relative slide, thus rubber support and spherical bearing bear jointly
Horizontal force, decreases geological process power it is achieved that controlling beam bridge beam body horizontal displacement.
Compared with prior art, the beneficial effects of the present invention is:
First, the seismic isolation and reduction structure that the present invention provides, interval setting spherical bearing between the structure of bridge upper and lower part, and
Setting rubber support is interted side by side, when an earthquake occurs, geological process power cuts off the ball-type bearing vertical force between spherical bearing
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, thus playing control beam bridge horizontal displacement, prevents the destruction that horizontal seismic force causes to continuous bridge.Additionally,
Both rubber support and spherical bearing stress is clear and definite, structure is simple, easy for installation, saves cost, thus this seismic isolation and reduction structure
There is boundless application prospect.
2nd, the shock-dampening method of the seismic isolation and reduction structure that the present invention provides, is fixedly connected first between the structure of bridge upper and lower part
Spherical bearing and rubber support, and make spherical bearing and the setting of rubber support spacing side by side；Then when earthquake occurs and lateral
When power exceedes horizontal earthquake force threshold, spherical bearing is cut off, rubber support and be located at its upper and lower ends upper and lower bearing steel plate
Not occurring relatively to slide, thus rubber support and spherical bearing bear horizontal force jointly, decreasing geological process power it is achieved that controlling
Beam bridge beam body horizontal displacement processed, thus prevent the destruction that horizontal seismic force produces to large span low pier continuous bridge.This damping side
Method is easy and simple to handle, and the seismic isolation and reduction structure being adopted makes simply, easy for installation, can be produced in batches with factory, greatly improve and build
Build industrialized level, there is preferably promotional value.
Brief description
Fig. 1 is the structural representation of the seismic isolation and reduction structure of one embodiment of the invention.
In figure: 11- bridge superstructure；12- bridge substructure；20- spherical bearing；30- rubber support body；31-
Upper bracket steel plate；32- undersetting steel plate；The upper cushion block of 41-；42- lower cushion block；43- upper cushion block steel plate；44- lower cushion block steel plate.
Specific embodiment
Below in conjunction with the drawings and specific embodiments a kind of seismic isolation and reduction structure proposed by the present invention and its shock-dampening method are made into
One step describes in detail.According to description below, advantages and features of the invention will become apparent from.Below will be by cited embodiment
In conjunction with accompanying drawing, describe technology contents and the feature of the present invention in detail.Need in addition illustrate, accompanying drawing is all using the shape of very simplification
Formula and all using non-accurately ratio, only in order to purpose that is convenient, lucidly aiding in illustrating the embodiment of the present invention.For narration side
Just, described below " on ", D score consistent with accompanying drawing upper and lower direction, but this can not become technical solution of the present invention
Limit.
Embodiment one
Refer to Fig. 1, a kind of seismic isolation and reduction structure, it is arranged at intervals between bridge upper and lower part structure (11,12) including some
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, propped up by arranging multiple ball-types between the upper and lower part structure (11,12) of large span low pier continuous bridge
Seat 20, can bear vertical seismic force.However, to bigger horizontal earthquakes of building destruction such as large span low pier continuous bridges
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 support that can resist horizontal seismic force of interval setting is 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
Do not occur between seat steel plate (31,32) relatively to slide, thus rubber support and spherical bearing 20 bear horizontal force, jointly to play
Control beam bridge beam body horizontal displacement, prevent the effect that horizontal seismic force damages to building.And, rubber support and ball-type
Both bearings stress is clear and definite, structure is simple, easy for installation, saves cost.
It is preferred that sliding it is ensured that controlling the effect of beam body horizontal displacement to prevent rubber support from producing further, upper,
Lower cushion block steel plate (43,44) is welded to connect or bolt connection with corresponding upper and lower bearing steel plate (31,32) respectively, upper and lower cushion block
Steel plate (43,44) is fixedly connected with upper and lower cushion block (41,42).
It is preferred that spherical bearing be non-Anti-seismic bearing it is not necessary to bear very big horizontal force, thus simplify ball-type propping up
The construction of seat, reduces manufacture and the installation cost of spherical bearing size reduction spherical bearing.
It is preferred that rubber support body 30 is plate-type laminated rubber bearing, structure is simple, low production cost, is conveniently replaceable.
It is preferred that in order to ensure firmly installing property, rubber support is by thereon, lower cushion block steel plate (43,44) is upper arranges anchor
Gu reinforcing bar is fixedly connected with bridge upper and lower part structure (11,12).
Embodiment two
Please continue to refer to Fig. 1, present embodiment discloses a kind of shock-dampening method of the seismic isolation and reduction structure of the utilization present invention, including
Step is as follows:
Step one: be fixedly connected spherical bearing 20 and rubber support between bridge upper and lower part structure (11,12), and make
Obtain spherical bearing 20 and the setting of rubber support spacing side by side；
Step 2: when earthquake generation and when side force exceedes horizontal earthquake force threshold, spherical bearing 20 is cut off, and rubber props up
There is not relative slip, thus rubber support and spherical bearing in seat and the upper and lower bearing steel plate (31,32) being located at its upper and lower ends
20 bear horizontal force jointly, decrease geological process power it is achieved that controlling beam bridge beam body horizontal displacement, thus preventing horizontal earthquake
The destruction that power produces to large span low pier continuous bridge.
Foregoing description is only the description to present pre-ferred embodiments, not any restriction to the scope of the invention, this
Any change that the those of ordinary skill in bright field does according to the disclosure above content, modification, belong to the protection of claims
Scope.
Claims (6)
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 adjacent described spherical bearing, and described rubber support is by upper
To under be followed successively by upper cushion block, rubber support body and lower cushion block, the top of described rubber support body and bottom are respectively equipped with
Upper and lower bearing steel plate, is respectively equipped with upper and lower cushion block steel between described upper and lower bearing steel plate and corresponding described upper and lower cushion block
Plate, described upper and lower cushion block steel plate is imbedded in described upper and lower cushion block.
2. seismic isolation and reduction structure according to claim 1 it is characterised in that described upper and lower cushion block steel plate respectively with corresponding
Described upper and lower bearing steel plate bolt connection or be welded to connect.
3. seismic isolation and reduction structure according to claim 1 is it is characterised in that described spherical bearing is non-Anti-seismic bearing.
4. seismic isolation and reduction structure according to claim 1 is it is characterised in that described rubber support body is plate-type laminated rubber
Bearing.
5. seismic isolation and reduction structure according to claim 1 it is characterised in that described rubber support pass through thereon, undersetting steel
Plate is fixedly connected with bridge upper and lower part structure.
6. a kind of shock-dampening method of continuous bridge is it is characterised in that comprise the steps:
Step one: be fixedly connected spherical bearing and rubber support between the structure of bridge upper and lower part, and make spherical bearing and rubber
Glue bearing spacing side by side is arranged；
Step 2: when earthquake generation and when side force exceedes horizontal earthquake force threshold, spherical bearing is cut off, rubber support and position
The upper and lower bearing steel plate descending two ends thereon does not occur relatively to slide, thus rubber support and spherical bearing bear level jointly
Power, decreases geological process power it is achieved that controlling beam bridge beam body horizontal displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610903776.3A CN106351118A (en) | 2016-10-17 | 2016-10-17 | Earthquake isolation and reduction structure and earthquake reduction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610903776.3A CN106351118A (en) | 2016-10-17 | 2016-10-17 | Earthquake isolation and reduction structure and earthquake reduction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106351118A true CN106351118A (en) | 2017-01-25 |
Family
ID=57865927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610903776.3A Pending CN106351118A (en) | 2016-10-17 | 2016-10-17 | Earthquake isolation and reduction structure and earthquake reduction method thereof |
Country Status (1)
| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217587A (en) * | 2017-06-08 | 2017-09-29 | 成都市大通路桥机械有限公司 | A kind of split type Isolated Bridges bearing |
| CN108611967A (en) * | 2018-06-01 | 2018-10-02 | 四川省交通运输厅公路规划勘察设计研究院 | A kind of variation rigidity combined isolator |
| CN112681122A (en) * | 2020-12-22 | 2021-04-20 | 刘亚楠 | Shock absorption and isolation support for bridge |
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| JPH11323830A (en) * | 1998-05-14 | 1999-11-26 | Bridgestone Corp | Rubber bearing for bridge |
| CN201265143Y (en) * | 2008-09-19 | 2009-07-01 | 成都市新筑路桥机械股份有限公司 | Shock damping and insulating plate type rubber support |
| CN201272941Y (en) * | 2008-09-16 | 2009-07-15 | 成都亚佳工程新技术开发有限公司 | High-damp rubber support |
| CN102146704A (en) * | 2011-03-23 | 2011-08-10 | 中天建设集团有限公司 | Building shock isolation device |
| JP2012031687A (en) * | 2010-08-02 | 2012-02-16 | Yokohama Rubber Co Ltd:The | Elastic bearing for bridge |
| CN202148612U (en) * | 2011-03-30 | 2012-02-22 | 上海昭瑞减震科技有限公司 | Three-dimensional earthquake isolation device capable of controlling sway and resisting lift-off |
| CN102561176A (en) * | 2012-01-19 | 2012-07-11 | 成都市新筑路桥机械股份有限公司 | Limiting structure for bridge |
| CN202543794U (en) * | 2012-04-24 | 2012-11-21 | 西安中交土木科技有限公司 | Combined ultrahigh damping isolation rubber support |
| CN103485276A (en) * | 2013-09-24 | 2014-01-01 | 成都市新筑路桥机械股份有限公司 | Horizontal elastic damping system of long-span bridge |
| CN203960733U (en) * | 2014-04-14 | 2014-11-26 | 长安大学 | Lead for retractable pencil damping rubber support |
| CN206143625U (en) * | 2016-10-17 | 2017-05-03 | 上海市政工程设计研究总院（集团）有限公司 | Subtract isolation structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11323830A (en) * | 1998-05-14 | 1999-11-26 | Bridgestone Corp | Rubber bearing for bridge |
| CN201272941Y (en) * | 2008-09-16 | 2009-07-15 | 成都亚佳工程新技术开发有限公司 | High-damp rubber support |
| CN201265143Y (en) * | 2008-09-19 | 2009-07-01 | 成都市新筑路桥机械股份有限公司 | Shock damping and insulating plate type rubber support |
| JP2012031687A (en) * | 2010-08-02 | 2012-02-16 | Yokohama Rubber Co Ltd:The | Elastic bearing for bridge |
| CN102146704A (en) * | 2011-03-23 | 2011-08-10 | 中天建设集团有限公司 | Building shock isolation device |
| CN202148612U (en) * | 2011-03-30 | 2012-02-22 | 上海昭瑞减震科技有限公司 | Three-dimensional earthquake isolation device capable of controlling sway and resisting lift-off |
| CN102561176A (en) * | 2012-01-19 | 2012-07-11 | 成都市新筑路桥机械股份有限公司 | Limiting structure for bridge |
| CN202543794U (en) * | 2012-04-24 | 2012-11-21 | 西安中交土木科技有限公司 | Combined ultrahigh damping isolation rubber support |
| CN103485276A (en) * | 2013-09-24 | 2014-01-01 | 成都市新筑路桥机械股份有限公司 | Horizontal elastic damping system of long-span bridge |
| CN203960733U (en) * | 2014-04-14 | 2014-11-26 | 长安大学 | Lead for retractable pencil damping rubber support |
| CN206143625U (en) * | 2016-10-17 | 2017-05-03 | 上海市政工程设计研究总院（集团）有限公司 | Subtract isolation structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217587A (en) * | 2017-06-08 | 2017-09-29 | 成都市大通路桥机械有限公司 | A kind of split type Isolated Bridges bearing |
| CN108611967A (en) * | 2018-06-01 | 2018-10-02 | 四川省交通运输厅公路规划勘察设计研究院 | A kind of variation rigidity combined isolator |
| CN112681122A (en) * | 2020-12-22 | 2021-04-20 | 刘亚楠 | Shock absorption and isolation support for bridge |
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