CN108330845A - A kind of reinforcement means of curve bridge underpinning - Google Patents
A kind of reinforcement means of curve bridge underpinning Download PDFInfo
- Publication number
- CN108330845A CN108330845A CN201810075195.4A CN201810075195A CN108330845A CN 108330845 A CN108330845 A CN 108330845A CN 201810075195 A CN201810075195 A CN 201810075195A CN 108330845 A CN108330845 A CN 108330845A
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- China
- Prior art keywords
- pile
- concrete
- jack
- transform beams
- construction
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
Abstract
A kind of reinforcement means of curve bridge underpinning, includes the following steps：（a）Live unwrapping wire, positioning, exploratory trench, pipeline are investigated；（b）Construction supporting stake（1）, rotary churning pile（2）, underpinned pile（3）And construction spray pile foundation seat（4）；（c）Construction underpins pile framing on rotary churning pile pedestal basal plane（5）；Concrete is poured again obtains transform beams（6）；（d）Place jack and steel cushion block（8）；Then to jack loading；Bridge pier is blocked again（11）Lower part pile foundation；（e）Concrete between pile framing and transform beams is underpined pouring（7）And steel cushion block is poured in wherein；（f）Paste cushion rubber layer（9）；Then the lower plain concrete of backfill（14）；Again to backfilling cohesive soil above transform beams（15）And it is compacted.The present invention can reduce the heavy influence to existing structure of drop of underpinning structure pile foundation as possible, can meet that pile foundation settlement is required less than 1mm key technologies and difficulty of construction is low.
Description
Technical field
The present invention relates to a kind of reinforcement means of curve bridge underpinning, dependent territory builds field of engineering technology.
Background technology
Existing interim to curve bridge section pile foundation underpinning, the drop in order to reduce underpinning structure pile foundation as possible is sunk to existing structure,
Key technology is to meet the requirements pile foundation settlement to be less than 1cm, is not more than 5cm greatly much smaller than existing engineering design code, therefore apply
Work difficulty is big.
Invention content
The object of the present invention is in order to solve one or more drawbacks described above in the prior art, the present invention provides one
The reinforcement means of kind curve bridge underpinning can reduce the heavy influence to existing structure of drop of underpinning structure pile foundation as possible, can
Meet pile foundation settlement less than 1cm key technologies require and difficulty of construction it is low.
Realize that technical scheme is as follows, a kind of reinforcement means of curve bridge underpinning includes the following steps：
（1）The live unwrapping wire of progress, positioning, exploratory trench, pipeline are investigated；Coverage gut line is moved change, traffic data process and enclosing covers；
（2）Then construction supporting stake, rotary churning pile and underpinned pile construction spray pile foundation seat and are reinforced rotary churning pile；
（3）Construction underpins pile framing on rotary churning pile pedestal basal plane；Then on bridge pier lower part bar planting and bind underpin beam steel,
And it sets up and underpins beam form；Finally transform beams are obtained underpining casting beams concrete in beam form；
（4）After transform beams reach design strength, jack and steel cushion block are placed on underpining pile framing；Then jack is added
Lotus is to the 100% of bridge pier design load, by lifting jack unloading to voltage stabilizing load after the deformation of curve bridge section and settlement stability；Again
It blocks bridge pier lower part pile foundation and during cutting stake, monitors settlement amount of pile foundation closely, and jack by jack, its sedimentation is made to become
Shape amount controls within the allowable range, is completed until cutting stake；
（5）It pours underpinned pile and underpins interconnecting piece concrete, and jack is removed after its concrete reaches intensity；Then underpinned pile is poured again
Concrete and steel cushion block is poured in wherein between cushion cap and transform beams；
（6）In transform beams lower surface and underpin pile framing periphery stickup cushion rubber layer；Then backfill transform beams and churning pile foundation
Lower plain concrete between seat；Again to backfilling cohesive soil above transform beams and being compacted, to restore the concordant original state in surrounding ground.
The sedimentation and deformation allowable range is the upper limit+1mm and lower limit -2mm.
The rubber buffer layer thickness is 20mm.
The invention has the advantages that the present invention can reduce the heavy shadow to existing structure of drop of underpinning structure pile foundation as possible
It rings, the method for the present invention can meet pile foundation settlement less than the requirement of 1cm key technologies, and difficulty of construction is low.
Description of the drawings
Fig. 1 is structural schematic diagram of the present invention in the second gait；
Fig. 2 is structural schematic diagram of the present invention in third gait；
Fig. 3 is structural schematic diagram of the present invention in four gaits；
Fig. 4 is structural schematic diagram of the present invention in the 5th and six gaits；
In figure, 1 is support pile；2 be rotary churning pile；3 be underpinned pile；3a is by underpinned pile；4 be spray pile foundation seat；5 be to underpin pile
Platform；6 be transform beams；7 be to underpin concrete between pile framing and transform beams；8 be steel cushion block；9 be cushion rubber layer；10 be to underpin joist steel
Muscle；11 be bridge pier；12 be curve bridge section；13 be around ground；14 be lower plain concrete；15 be backfill cohesive soil.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples：
A kind of reinforcement means of curve bridge underpinning of the present embodiment, includes the following steps：
The live unwrapping wire of the first step, first progress, positioning, exploratory trench, pipeline are investigated；Then coverage gut line is moved change, traffic
It discongests and encloses and cover.
Second step, first construction supporting stake 1, rotary churning pile 2 and underpinned pile 3, then construction spray pile foundation seat 4 and by rotary churning pile 2
It reinforces；As shown in Figure 1.
Third walks, and constructing first on 4 basal plane of rotary churning pile pedestal underpins pile framing 5；Then the bar planting on 11 lower part of bridge pier
And it binds to underpin beam steel 10 and set up and underpins beam form；Finally transform beams 6 are obtained underpining casting beams concrete in beam form；Such as Fig. 2
It is shown.
4th step places jack and steel cushion block 8 after transform beams 6 reach design strength on underpining pile framing 5；Then
To jack loading to the 100% of bridge pier design load, after the deformation of curve bridge section 12 and settlement stability extremely by lifting jack unloading
Voltage stabilizing load；11 lower part pile foundation of bridge pier is blocked again and during cutting stake, monitors settlement amount of pile foundation closely, and pass through jack top
It rises, makes the control of its settling amount within the allowable range, completed until cutting stake；As shown in Figure 3.
Then 5th step pours underpinned pile 3 and underpins interconnecting piece concrete and remove jack after its concrete 3-1 reaches intensity；
Then it pours again and underpins concrete 7 between pile framing 5 and transform beams 6 and pour steel cushion block 8 in wherein；As shown in Figure 4.
6th step in 6 lower surface of transform beams and underpins 5 periphery of pile framing stickup cushion rubber layer 9；Then transform beams are backfilled
Lower plain concrete 14 between 6 and rotary churning pile pedestal 4；Cohesive soil 15 is backfilled to 6 top of transform beams again and is compacted, to restore surrounding ground
13 concordant original states；As shown in Figure 4.
Sedimentation and deformation allowable range in the present embodiment is the upper limit+1mm and lower limit -2mm.
9 thickness 20mm of cushion rubber layer in the present embodiment.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be in the protection domain being defined in the patent claims.
Claims (3)
1. a kind of reinforcement means of curve bridge underpinning, which is characterized in that the described method comprises the following steps：
（1）The live unwrapping wire of progress, positioning, exploratory trench, pipeline are investigated；Coverage gut line is moved change, traffic data process and enclosing covers；
（2）Then construction supporting stake, rotary churning pile and underpinned pile construction spray pile foundation seat and are reinforced rotary churning pile；
（3）Construction underpins pile framing on rotary churning pile pedestal basal plane；Then on bridge pier lower part bar planting and bind underpin beam steel,
And it sets up and underpins beam form；Finally transform beams are obtained underpining casting beams concrete in beam form；
（4）After transform beams reach design strength, jack and steel cushion block are placed on underpining pile framing；Then jack is added
Lotus is to the 100% of bridge pier design load, by lifting jack unloading to voltage stabilizing load after the deformation of curve bridge section and settlement stability；Again
It blocks bridge pier lower part pile foundation and during cutting stake, monitors settlement amount of pile foundation closely, and jack by jack, its sedimentation is made to become
Shape amount controls within the allowable range, is completed until cutting stake；
（5）It pours underpinned pile and underpins interconnecting piece concrete, and jack is removed after its concrete reaches intensity；Then underpinned pile is poured again
Concrete and steel cushion block is poured in wherein between cushion cap and transform beams；
（6）In transform beams lower surface and underpin pile framing periphery stickup cushion rubber layer；Then backfill transform beams and churning pile foundation
Lower plain concrete between seat；Again to backfilling cohesive soil above transform beams and being compacted, to restore the concordant original state in surrounding ground.
2. a kind of reinforcement means of curve bridge underpinning according to claim 1, which is characterized in that the sedimentation becomes
Shape allowable range is the upper limit+1mm and lower limit -2mm.
3. a kind of reinforcement means of curve bridge underpinning according to claim 1, which is characterized in that the rubber is slow
It is 20mm to rush layer thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810075195.4A CN108330845A (en) | 2018-01-26 | 2018-01-26 | A kind of reinforcement means of curve bridge underpinning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810075195.4A CN108330845A (en) | 2018-01-26 | 2018-01-26 | A kind of reinforcement means of curve bridge underpinning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108330845A true CN108330845A (en) | 2018-07-27 |
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ID=62926526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810075195.4A Pending CN108330845A (en) | 2018-01-26 | 2018-01-26 | A kind of reinforcement means of curve bridge underpinning |
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| Country | Link |
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| CN (1) | CN108330845A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356210A (en) * | 2018-11-21 | 2019-02-19 | 兰州理工大学 | A kind of pile foundation building inclination rectification cuts stake and underpins position limiting structure and its construction method |
| CN110409487A (en) * | 2019-08-13 | 2019-11-05 | 苏交科集团股份有限公司 | A kind of pile foundation underpinning structure for city tunnel newly-built below bridge |
| CN112176879A (en) * | 2020-10-15 | 2021-01-05 | 深圳市罗湖建筑安装工程有限公司 | Bridge pier foundation underpinning structure and construction method |
| CN113047186A (en) * | 2021-03-24 | 2021-06-29 | 华东交通大学 | Bridge reinforcing apparatus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005002671A (en) * | 2003-06-12 | 2005-01-06 | Kajima Corp | Underpinning method and viaduct |
| CN101067303A (en) * | 2007-02-13 | 2007-11-07 | 铁道第二勘察设计院 | Active pile foundation underpinning structure and constructing method thereof |
| KR20110019674A (en) * | 2009-08-20 | 2011-02-28 | 박용민 | G.w foundation reinforcement method |
| CN103806377A (en) * | 2014-02-25 | 2014-05-21 | 福建建工集团总公司 | Overall bridge large-tonnage and multi-pile-foundation active underpinning structure and underpinning method |
| CN105002835A (en) * | 2015-07-06 | 2015-10-28 | 上海同罡建筑工程有限公司 | Underpinning method for lower bridge of open-cut tunnel |
| CN106065577A (en) * | 2016-08-08 | 2016-11-02 | 福州轨道交通设计院有限公司 | The structure of a kind of new pile foundation underpinning and method |
-
2018
- 2018-01-26 CN CN201810075195.4A patent/CN108330845A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005002671A (en) * | 2003-06-12 | 2005-01-06 | Kajima Corp | Underpinning method and viaduct |
| CN101067303A (en) * | 2007-02-13 | 2007-11-07 | 铁道第二勘察设计院 | Active pile foundation underpinning structure and constructing method thereof |
| KR20110019674A (en) * | 2009-08-20 | 2011-02-28 | 박용민 | G.w foundation reinforcement method |
| CN103806377A (en) * | 2014-02-25 | 2014-05-21 | 福建建工集团总公司 | Overall bridge large-tonnage and multi-pile-foundation active underpinning structure and underpinning method |
| CN105002835A (en) * | 2015-07-06 | 2015-10-28 | 上海同罡建筑工程有限公司 | Underpinning method for lower bridge of open-cut tunnel |
| CN106065577A (en) * | 2016-08-08 | 2016-11-02 | 福州轨道交通设计院有限公司 | The structure of a kind of new pile foundation underpinning and method |
Non-Patent Citations (1)
| Title |
|---|
| 李洪庆: "桩基托换技术在广州地铁工程中的应用", 《城市轨道交通研究》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356210A (en) * | 2018-11-21 | 2019-02-19 | 兰州理工大学 | A kind of pile foundation building inclination rectification cuts stake and underpins position limiting structure and its construction method |
| CN110409487A (en) * | 2019-08-13 | 2019-11-05 | 苏交科集团股份有限公司 | A kind of pile foundation underpinning structure for city tunnel newly-built below bridge |
| CN112176879A (en) * | 2020-10-15 | 2021-01-05 | 深圳市罗湖建筑安装工程有限公司 | Bridge pier foundation underpinning structure and construction method |
| CN113047186A (en) * | 2021-03-24 | 2021-06-29 | 华东交通大学 | Bridge reinforcing apparatus |
| CN113047186B (en) * | 2021-03-24 | 2022-08-30 | 华东交通大学 | Bridge reinforcing apparatus |
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Application publication date: 20180727 |
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