CN106869007A - A kind of single span simply supported girder bridge structure suitable for the sinking land in coalmining areas - Google Patents
A kind of single span simply supported girder bridge structure suitable for the sinking land in coalmining areas Download PDFInfo
- Publication number
- CN106869007A CN106869007A CN201710224273.8A CN201710224273A CN106869007A CN 106869007 A CN106869007 A CN 106869007A CN 201710224273 A CN201710224273 A CN 201710224273A CN 106869007 A CN106869007 A CN 106869007A
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- China
- Prior art keywords
- abutment
- floorings
- bearing
- simply supported
- girder bridge
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of single span simply supported girder bridge structure suitable for the sinking land in coalmining areas, including abutment, basis, floorings and bearing, the top surface of abutment is fold-line-shaped structure, including middle horizontal plane and the inclined plane positioned at both sides, bearing quantity is 3, wherein 2 are placed on side abutment, and another 1 is placed on opposite side abutment.Bridge Pier, due to using 3 bearing modes of emplacements, 1 principle of plane can be determined according to any 3 points in space in earth's surface deformation process, and the plane that floorings plane can be constituted with 3 bearing top surfaces all the time is kept always, so as to prevent floorings from ftractureing.The abutment top surface of fold-line-shaped structure can effectively limit the lateral displacement of floorings, prevent the beam accident that falls.
Description
Technical field
The present invention relates to a kind of flexible simply supported girder bridge structure, it is adaptable to be built in the science of bridge building of the sinking land in coalmining areas, it is ensured that
It is safe and stable in earth's surface deformation process jackshaft girder construction.
Background technology
In order to meet the development of social economy, people increase the development and utilization to subterranean resource, coal, oil, day
The resources such as right gas, underground water are endlessly produced from underground, this inevitably destroy subterranean body, the soil body it is original
Original stress equilibrium state, causes the stresses re-distribution in Rock And Soil, and rock stratum produces mobile, deformation and failure.When underground productive area
After reaching certain scope, originate in the movement near stope and will expand to earth's surface, form an earth's surface deformed area, either subtract
The production technique of light subsidence, including room and pillar mining, partial mining, cut and fill and the exploitation of layering gap etc., or
Common recovery method, can all cause large-scale earth's surface to deform in recovery process.This earth's surface deformation includes that sedimentation, level are moved
Dynamic, inclination and curvature defomation.Significantly earth's surface deformation often focuses on the several months before and after working face mining.Although as the time
Increase, the speed of deformation can reduce gradually, and typically after exploitation in 2-3, earth's surface deformation can tend towards stability, but on ground
Under the inductions of effect such as lower water, earthquake, earth's surface deformation is possible to increase suddenly.With urban construction and traffic infrastructure
Development, and land resource growing tension, the sinking land in coalmining areas build bridge demand it is growing day by day.Normal Bridge Design
The general earth's surface for not considering that coal-mining subsidence is caused deforms, and the ability of its structure resistance earth's surface deformation is very limited.Earth's surface deformation is right
The potential hazard that bridge is caused includes that floor elevation reduction, substructure cracking, the beam that falls, support damage and floorings ftracture
Deng.Therefore, it build the science of bridge building of above goaf in, no matter whether underground mining has completed, and will take technical measures, really
Protect bridge main body structure not destroyed in earth's surface deformation, carried out after bridge is mated formation and accessory structure waits earth's surface stabilization
Limited maintenance.
The content of the invention
Goal of the invention：For above-mentioned prior art, propose a kind of suitable for flexible simply supported girder bridge structure, it can be ensured that adopting
Earth's surface significantly deformation process Bridge agent structure safety and stability caused by coal depression.
Technical scheme：A kind of single span simply supported girder bridge structure suitable for the sinking land in coalmining areas, including abutment, basis, floorings
And bearing；
The top surface of the abutment is fold-line-shaped structure, including middle horizontal plane and the inclined plane positioned at both sides；
The basis uses Extended chemotherapy, is arranged on more than earth's surface, does not carry out ground backfill；
The floorings are reinforced concrete hollow slab beam；
The bearing quantity is 3, wherein 2 are placed on side abutment, another 1 is placed on opposite side abutment.
Further, the bearing is laminated rubber bearing.
Further, on the top surface of the abutment, the angle that the inclined plane is formed with horizontal plane is 15~30 degree.
Further, the span between the abutment is no more than 30m.
Beneficial effect：Due to the influence of sinking land in coalmining areas surface movement and the current social economy in the vast coal bases of China
Development level is not high, and the science of bridge building overwhelming majority built in the sinking land in coalmining areas is Material bridge, and span is generally all little.The present invention
Propose a kind of single span simply supported girder bridge structure maximum span suitable for the sinking land in coalmining areas be no more than 30m, it is adaptable to pass through due to
The earth's surface that coal-mining subsidence or other reasonses are caused deforms the science of bridge building of large area, substantially meets mining area overwhelming majority bridge
The need for engineering.
Bridge Pier will certainly produce differential settlement in earth's surface deformation process, and superstructure is simple beam structure,
Girder will not produce additional internal force during the bearing relative settlement of two ends.Bridge Pier is often accompanied by addition to having Vertical Settlement
Inclination and distortion, the tilting value of usual two ends abutment is also inconsistent.Therefore 4 traditional bearing modes of emplacements can cause floorings and portion
Divide seat empty, cracking is produced due to losing the supporting role of bearing at floorings corner.The present invention proposes to use 3 bearings
Modes of emplacement, 1 principle of plane can be determined according to any 3 points in space, floorings plane can all the time with 3 bearings
The plane of top surface composition keeps always.
Additionally, abutment top surface is fold-line-shaped structure, it is made up of the inclined plane of middle horizontal plane and both sides.Common bridge
Abutment top surface is plane, and both sides are provided with block, the lateral displacement for limiting floorings.But under specific condition, such as earthquake,
Block does not often limit the horizontal displacement of floorings and failure by shear occurs.The present invention uses three linear abutments of up concave type
Top surface form, can effectively limit the lateral displacement of floorings, prevent the beam accident that falls.
Brief description of the drawings
Fig. 1 is single span simply supported girder bridge structural facades figure of the present invention suitable for the sinking land in coalmining areas；
Fig. 2 is abutment elevation of the invention.
Specific embodiment
The present invention is done below in conjunction with the accompanying drawings further is explained.
As shown in figure 1, a kind of single span simply supported girder bridge structure suitable for the sinking land in coalmining areas is by abutment 1, floorings 2, basis
3rd, bearing 4 is constituted.Floorings are that the span between reinforced concrete hollow slab beam, abutment is no more than 30m.The top surface of abutment is broken line
Shape structure, the inclined plane by middle horizontal plane and positioned at both sides is constituted, and the angle that inclined plane is formed with horizontal plane is 15~
30 degree, as shown in Fig. 2 constituting up concave type shape.Basis uses Extended chemotherapy, is arranged on more than earth's surface, does not carry out ground backfill.
Bearing quantity is 3, wherein 2 are placed on the horizontal plane of side abutment, another 1 horizontal plane for being placed on opposite side abutment
On, bearing is laminated rubber bearing in the present embodiment.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (4)
1. a kind of single span simply supported girder bridge structure suitable for the sinking land in coalmining areas, it is characterised in that：Including abutment, basis, floorings
And bearing；
The top surface of the abutment is fold-line-shaped structure, including middle horizontal plane and the inclined plane positioned at both sides；
The basis uses Extended chemotherapy, is arranged on more than earth's surface, does not carry out ground backfill；
The floorings are reinforced concrete hollow slab beam；
The bearing quantity is 3, wherein 2 are placed on side abutment, another 1 is placed on opposite side abutment.
2. the single span simply supported girder bridge structure suitable for the sinking land in coalmining areas according to claim 1, it is characterised in that：The branch
Seat is laminated rubber bearing.
3. the single span simply supported girder bridge structure suitable for the sinking land in coalmining areas according to claim 1, it is characterised in that：The bridge
On the top surface of platform, the angle that the inclined plane is formed with horizontal plane is 15~30 degree.
4. according to any described single span simply supported girder bridge structures suitable for the sinking land in coalmining areas of claim 1-3, it is characterised in that：
Span between the abutment is no more than 30m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710224273.8A CN106869007A (en) | 2017-04-07 | 2017-04-07 | A kind of single span simply supported girder bridge structure suitable for the sinking land in coalmining areas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710224273.8A CN106869007A (en) | 2017-04-07 | 2017-04-07 | A kind of single span simply supported girder bridge structure suitable for the sinking land in coalmining areas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106869007A true CN106869007A (en) | 2017-06-20 |
Family
ID=59160235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710224273.8A Pending CN106869007A (en) | 2017-04-07 | 2017-04-07 | A kind of single span simply supported girder bridge structure suitable for the sinking land in coalmining areas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106869007A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485439A (en) * | 2019-08-26 | 2019-11-22 | 中建五局第三建设有限公司 | The environmentally protective bamboo formula Bridge Pier of cutting of one kind excavates shield base construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB810733A (en) * | 1956-02-25 | 1959-03-25 | Donovan Henry Lee | Improved construction of bridges subject to settlement and mining subsidence |
| CN1335433A (en) * | 2000-07-24 | 2002-02-13 | 陈彦平 | Overhead road with composite foundation |
| CN201801793U (en) * | 2010-09-20 | 2011-04-20 | 上海市政工程设计研究总院 | Combined building structure of underground road and ground bridge |
| CN203821227U (en) * | 2014-04-15 | 2014-09-10 | 中铁六局集团天津铁路建设有限公司 | Embedded bridge anti-seismic stopping block |
| CN105401514A (en) * | 2015-10-20 | 2016-03-16 | 同济大学 | Upper portion structure of prefabricated trapezoidal three-support hollow board beam bridge |
| CN205557287U (en) * | 2015-12-11 | 2016-09-07 | 苏交科集团股份有限公司 | A empty core plate girder construction for emptying core plate beam bridge |
-
2017
- 2017-04-07 CN CN201710224273.8A patent/CN106869007A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB810733A (en) * | 1956-02-25 | 1959-03-25 | Donovan Henry Lee | Improved construction of bridges subject to settlement and mining subsidence |
| CN1335433A (en) * | 2000-07-24 | 2002-02-13 | 陈彦平 | Overhead road with composite foundation |
| CN201801793U (en) * | 2010-09-20 | 2011-04-20 | 上海市政工程设计研究总院 | Combined building structure of underground road and ground bridge |
| CN203821227U (en) * | 2014-04-15 | 2014-09-10 | 中铁六局集团天津铁路建设有限公司 | Embedded bridge anti-seismic stopping block |
| CN105401514A (en) * | 2015-10-20 | 2016-03-16 | 同济大学 | Upper portion structure of prefabricated trapezoidal three-support hollow board beam bridge |
| CN205557287U (en) * | 2015-12-11 | 2016-09-07 | 苏交科集团股份有限公司 | A empty core plate girder construction for emptying core plate beam bridge |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485439A (en) * | 2019-08-26 | 2019-11-22 | 中建五局第三建设有限公司 | The environmentally protective bamboo formula Bridge Pier of cutting of one kind excavates shield base construction method |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170620 |
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| RJ01 | Rejection of invention patent application after publication |