CN110158475A - A kind of prefabricated assembled bridge substructure and its construction method - Google Patents
A kind of prefabricated assembled bridge substructure and its construction method Download PDFInfo
- Publication number
- CN110158475A CN110158475A CN201910423829.5A CN201910423829A CN110158475A CN 110158475 A CN110158475 A CN 110158475A CN 201910423829 A CN201910423829 A CN 201910423829A CN 110158475 A CN110158475 A CN 110158475A
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- Prior art keywords
- cushion cap
- prefabricated
- crested
- sharp
- prefabricated cushion
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- 238000010276 construction Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 230000002787 reinforcement Effects 0.000 claims abstract description 15
- 238000013461 design Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000011376 self-consolidating concrete Substances 0.000 claims abstract description 6
- 239000004567 concrete Substances 0.000 claims description 10
- 239000002689 soil Substances 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000005056 compaction Methods 0.000 claims description 4
- 238000009412 basement excavation Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 238000009417 prefabrication Methods 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 claims description 2
- 238000005345 coagulation Methods 0.000 claims description 2
- 230000010485 coping Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000002674 ointment Substances 0.000 claims description 2
- 210000003205 muscle Anatomy 0.000 claims 1
- 239000011148 porous material Substances 0.000 abstract description 3
- 239000000306 component Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- 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
-
- 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
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to a kind of prefabricated assembled bridge substructure and its construction methods, belong to packaged type bridges design and construction field.Structure includes: that lower part is sharp-crested closed hollow circle piling bar, steel reinforcement cage, prefabricated cushion cap, precast pier, un-bonded prestressed steel strand, anchorage and sealing off and covering anchorage；Sharp-crested closed hollow circle piling bar is put into steel reinforcement cage；Prefabricated cushion cap is provided with the groove of bottom 4,4 reserved self-compacting concrete pouring holes, 1 truncated cone-shaped Tenon connector of top center, truncated cone-shaped Tenon connector surrounding and is arranged symmetrically prestressed pore passage；It is sharp-crested closed hollow circle piling bar that the prefabricated cushion cap for being installed with un-bonded prestressed steel strand, which is inserted into lower part by groove,；Prestress wire passes through precast pier, and prefabricated cushion cap is connect with precast pier by truncated cone-shaped Tenon connector.The present invention has reliable safety and globality, both can be assembled, can also remove, component may be reused, and truly accomplish prefabricated assembled.
Description
Technical field
The present invention relates to a kind of prefabricated assembled bridge substructure and its construction methods, are suitable for urban viaduct, stand
Bridge, overpass and various conventional middle-small span girder constructions are handed over, packaged type bridges design and construction field is belonged to.
Background technique
With the propulsion of urbanization process with the raising of living standards of the people, Urban Traffic Jam Based becomes increasingly conspicuous, such as
The influence reduced when where quickly building urban viaduct and viaduct to existing traffic is a problem to be solved.Prefabrication and assembly construction
Formula bridge will become Urban Bridge Construction from now on because it has many advantages, such as that field operation amount is small, construction speed is fast, environmental pollution is small
Development trend.According to the difference of construction operation, the type of attachment of fabricated construction is broadly divided into wet connection and involvement connects.Wet company
Connecing is that the reserved steel bars of prefabricated components is carried out joint connection in site, in seam crossing casting concrete, although this connection integrity compared with
Good and cast-in-place structural is similar, but it is relative complex to construct, and equally exists duration relatively long defect.Involvement connects, and is pre-
Pre-buried steel part or reserved prestressed pore passage in component processed, when site operation, are given by modes such as bolt, welding or prestressed stretch-draws
With connection, but globality is bad.In recent years, scholar proposes the splicing form of some cushion caps, but these joint forms are assembled
Complexity, construction technical requirement is high, and the example applied to packaged type bridges is less.It is more in terms of bridge infrastructure design and construction
Using traditional cast-in-situ bored pile structure type, there are the construction period is long, operation side demand is big, generated in work progress
The disadvantages of mud is larger to city environmental pollution, and outward transport processing cost is high；Research in terms of bridge foundation quickly construction at present
It is not mature enough.Therefore, it is necessary to design research and develop it is a kind of both on-site consolidation had been facilitated to construct, overall performance again preferable novel fabricated
Bridge substructure and construction technology.
Summary of the invention
Present invention aims at a kind of prefabricated assembled bridge substructure and its construction method is proposed, applied with reducing bridge
Influence during work to the existing traffic in city reduces environmental pollution caused by construction, solves current Urban Bridge Construction institute face
The difficulty faced.It is mixed using self-compaction between the pile foundation and prefabricated cushion cap of prefabricated assembled bridge substructure proposed by the present invention
The quickly connection of solidifying soil；It is connected between cushion cap and bridge pier using prestressing without bondn, interface uses joinery and its construction form.Knot of the present invention
Structure specifically includes that lower part is answered in advance for sharp-crested closed hollow circle piling bar 1, steel reinforcement cage 2, prefabricated cushion cap 3, precast pier 4, soap-free emulsion polymeization
Power steel strand wires 5, anchorage 6 and sealing off and covering anchorage 7.Prefabricated cushion cap 3 by the reserved self-compacting concrete pouring hole 9 of the groove 8,4 of bottom 4,
1 truncated cone-shaped Tenon connector 10 of top center, 10 surrounding of truncated cone-shaped Tenon connector are arranged symmetrically prestressed pore passage 11.Before construction first
Cushion cap foundation pit is excavated, is then that sharp-crested closed hollow circle piling bar 1 is squeezed into ground lower part by limit plate 12, then hangs away
Limit plate 12, it is sharp-crested closed hollow circle piling bar 1 that steel reinforcement cage 2, which is put into lower part,；Next is installed with prestressing without bondn steel
It is sharp-crested closed hollow circle piling bar 1 that the prefabricated cushion cap 3 of twisted wire 5, which is inserted into lower part by groove 8,；Pass through reserved concreting
Hole 9 pours self-compacting concrete.Un-bonded prestressed steel strand 5 is passed through precast pier 4 by lifting, prefabricated cushion cap 3 in advance
Bridge pier 4 processed is connected by truncated cone-shaped Tenon connector 10, is continued lifting splicing and is reached design height, uppermost precast pier upper end
Pre-buried anchorage 6 is later period tensioning use.
The core component of the design can be produced in batches with factory, and steel-pipe pile has certain bearing capacity, can independently bear
The self weight of cushion cap and bridge pier, substantially reduces construction period.Joinery and its construction form is used between prefabricated cushion cap and Precast Pier Columns, is led to
Prestressing without bondn connection is crossed, there is reliable safety and globality, both can be assembled, it can also remove, component can weigh
It is multiple to use, truly accomplish prefabricated assembled.
Detailed description of the invention
Fig. 1 is that pile foundation of the present invention with prefabricated cushion cap connect three-dimensional figure.
Fig. 2 is the prefabricated cushion cap detail drawing of the present invention.
Fig. 3 is that the present invention implements sequential schematic.
Wherein:
1, lower part is the closed open circles piling bar of sharp-crested；2, steel reinforcement cage；3, prefabricated cushion cap；4, precast pier；5, soap-free emulsion polymeization
Prestress wire；6, anchorage；7, sealing off and covering anchorage；8, groove；9, concrete pouring hole；10, truncated cone-shaped Tenon connector；11, prestressing force
Duct；12, limit plate.
Specific embodiment
With reference to embodiments and attached drawing is described in further detail, but not as limitation of the invention.
Prefabrication: (1) according to the design drawing assembling reinforcement of cushion cap, PVC material is can be used in 9 template of concrete pouring hole,
Drilling is on template to be passed through reinforcing bar；(2) reinforcing bar after-pouring concrete has been bound, vibrated, conserve；(3) outer side mold is removed
Plate, and concrete pouring hole 9PVC template is taken out；(4) short line casting precast pier 4 on prefabricated cushion cap 3 is used.
Site operation: (1) excavation pit；(2) pile sinking.First lower part of vibration-sunk is the closed open circles piling bar of sharp-crested
1, to designed elevation, puts limit plate 12 in stake top, 12 hole location of limit plate and size are corresponding with cushion cap, so as to accurately fixed
The position of position stake；Diagonally squeezing into the 2nd lower part is the closed open circles piling bar 1 of sharp-crested, then successively squeezes into remaining 2 pile；4
Limit plate 12 is hung away in stake after squeezing into soil；(3) it is put into steel reinforcement cage.It is the closed open circles of sharp-crested that steel reinforcement cage 2, which is hung in lower part,
Piling bar 1；(4) steel strand.Un-bonded prestressed steel strand 5 is passed through prefabricated cushion cap 3, with professional tool from prefabricated 3 bottom of cushion cap
The anti-corrosions ointment such as portion's indentation bitumastic simultaneously carry out sealing off and covering anchorage with sealing off and covering anchorage 7；(5) hoisting prefabricated cushion cap.Pass through prefabricated 3 bottom of cushion cap
Groove 8 is that the closed open circles piling bar 1 of sharp-crested is connect with lower part, and steel reinforcement cage is not entered in groove 8.(6) self-compaction coagulation is poured
Soil.Self-compacting concrete is poured by the concrete pouring hole 9 on prefabricated cushion cap 3, then enters in hole trace interpolation and connects reinforcing bar, is increased
The connection of strong prefabricated cushion cap 3 and pile foundation.(7) hoisting prefabricated bridge pier.Hoisting prefabricated bridge pier 4, pass through in cushion cap reserve
Un-bonded prestressed steel strand 5 continues hoisting prefabricated bridge pier 4 to design height, is twisted with jack tension prestressing without bondn steel
Line 5 completes the anchor connection between prefabricated cushion cap 3 and precast pier 4.
If you need to remove, can first be discharged from pier coping portion by the prestressing force of un-bonded prestressed steel strand 5, it then successively will be pre-
Bridge pier 4 processed unloads, to reuse.
The above described is only a preferred embodiment of the present invention, not doing limitation in any form to the present invention, appoint
What according to the technical essence of the invention, is made within the spirit and principles in the present invention without departing from technical solution of the present invention content
Any modification, equivalent variations and modification, be regarded as the technology scope of the present invention program, should be included in protection of the invention
In range.
Claims (3)
1. a kind of prefabricated assembled bridge substructure, characterized by comprising: lower part is sharp-crested closed hollow circle piling bar, steel
Muscle cage, prefabricated cushion cap, precast pier, un-bonded prestressed steel strand, anchorage and sealing off and covering anchorage；
Lower part is to be put into steel reinforcement cage in sharp-crested closed hollow circle piling bar；Prefabricated cushion cap be provided with the groove of bottom 4,4 it is reserved
Self-compacting concrete pouring hole, 1 truncated cone-shaped Tenon connector of top center, truncated cone-shaped Tenon connector surrounding be arranged symmetrically pre- answer
Power duct；It is sharp-crested closed hollow circular steel that the prefabricated cushion cap for being installed with un-bonded prestressed steel strand, which is inserted into lower part by groove,
Stake；Prestress wire passes through precast pier, and prefabricated cushion cap is connect with precast pier by truncated cone-shaped Tenon connector.
2. a kind of construction method of prefabricated assembled bridge substructure as described in claim 1, it is characterised in that: before construction first
Then excavation pit is that sharp-crested closed hollow circle piling bar is squeezed into ground lower part by limit plate, then hangs away limit plate,
It is sharp-crested closed hollow circle piling bar that steel reinforcement cage, which is put into lower part,；Secondly the prefabricated cushion cap for being installed with un-bonded prestressed steel strand
Being inserted into lower part by groove is sharp-crested closed hollow circle piling bar；Self-compaction coagulation is poured by reserved concrete pouring hole
Soil；Un-bonded prestressed steel strand is passed through precast pier by lifting, prefabricated cushion cap and precast pier pass through truncated cone-shaped Tenon
Connector connection continues lifting splicing and reaches design height, and the uppermost pre-buried anchorage in precast pier upper end is later period tensioning use.
3. a kind of construction method of prefabricated assembled bridge substructure as described in claim 1, it is characterised in that:
Prefabrication: (1) according to the design drawing assembling reinforcement of cushion cap, concrete pouring hole template uses PVC material, in template
Face drills to be passed through reinforcing bar；(2) reinforcing bar after-pouring concrete has been bound, vibrated, conserve；(3) outboard template is removed, and will be mixed
Solidifying soil pouring hole PVC template is taken out；(4) short line casting precast pier on prefabricated cushion cap is used；
Site operation: (1) excavation pit；(2) pile sinking；First lower part of vibration-sunk is the closed open circles piling bar of sharp-crested to setting
Absolute altitude is counted, puts limit plate in stake top, limit plate hole location and size are corresponding with cushion cap, so that the position of stake is accurately positioned
It sets；Diagonally squeezing into the 2nd lower part is the closed open circles piling bar of sharp-crested, then successively squeezes into remaining 2 pile；4 piles squeeze into soil
In after hang away limit plate；(3) it is put into steel reinforcement cage；It is the closed open circles piling bar of sharp-crested that steel reinforcement cage, which is hung in lower part,；(4) steel is worn
Twisted wire；Un-bonded prestressed steel strand is passed through prefabricated cushion cap, be pressed into anti-corrosion ointment from prefabricated cushion cap bottom and is carried out with sealing off and covering anchorage
Sealing off and covering anchorage；(5) hoisting prefabricated cushion cap；It is connect by the groove at prefabricated cushion cap bottom with lower part for the closed open circles piling bar of sharp-crested,
Steel reinforcement cage does not enter in groove；(6) self-compacting concrete is poured；It is mixed that self-compaction is poured by the concrete pouring hole on prefabricated cushion cap
Solidifying soil, then enters to connect reinforcing bar, enhances the connection of prefabricated cushion cap and pile foundation in hole trace interpolation；(7) hoisting prefabricated bridge pier；Lifting
Precast pier passes through the un-bonded prestressed steel strand reserved in cushion cap, continues hoisting prefabricated bridge pier to design height, uses
Jack tension un-bonded prestressed steel strand completes the anchor connection between prefabricated cushion cap and precast pier；
If you need to remove, first discharged from pier coping portion by the prestressing force of un-bonded prestressed steel strand, then successively by precast pier
It unloads, to reuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910423829.5A CN110158475A (en) | 2019-05-21 | 2019-05-21 | A kind of prefabricated assembled bridge substructure and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910423829.5A CN110158475A (en) | 2019-05-21 | 2019-05-21 | A kind of prefabricated assembled bridge substructure and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110158475A true CN110158475A (en) | 2019-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910423829.5A Pending CN110158475A (en) | 2019-05-21 | 2019-05-21 | A kind of prefabricated assembled bridge substructure and its construction method |
Country Status (1)
| Country | Link |
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| CN (1) | CN110158475A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982473A (en) * | 2021-03-04 | 2021-06-18 | 北京工业大学 | Unbonded prefabricated frame building foundation node and connection method thereof |
| CN113957800A (en) * | 2020-12-29 | 2022-01-21 | 中铁大桥局集团第六工程有限公司 | Synchronous installation method for prestressed steel bundles and prefabricated pier segments |
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| CN102767189A (en) * | 2012-07-31 | 2012-11-07 | 中铁第五勘察设计院集团有限公司 | Set bearing platform foundations and construction method thereof |
| KR101303307B1 (en) * | 2013-07-09 | 2013-09-03 | 부림산업개발(주) | Prefabricated precast bridge |
| CN104343080A (en) * | 2014-09-29 | 2015-02-11 | 北京工业大学 | Method for constructing segmental prefabricating and assembling swing foundation pier |
| CN105970993A (en) * | 2016-06-30 | 2016-09-28 | 上海勘测设计研究院有限公司 | Underwater connection structure for precast piles and precast bearing platform, and construction method thereof |
| CN106049259A (en) * | 2016-06-16 | 2016-10-26 | 安徽省交通规划设计研究总院股份有限公司 | Bridge integrally-assembled pier and construction method |
| CN108560423A (en) * | 2018-02-05 | 2018-09-21 | 四川动和工程咨询有限公司 | A kind of construction method of regular reinforcement and finish rolling deformed bar hybrid reinforcement assembly pier |
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2019
- 2019-05-21 CN CN201910423829.5A patent/CN110158475A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767189A (en) * | 2012-07-31 | 2012-11-07 | 中铁第五勘察设计院集团有限公司 | Set bearing platform foundations and construction method thereof |
| KR101303307B1 (en) * | 2013-07-09 | 2013-09-03 | 부림산업개발(주) | Prefabricated precast bridge |
| CN104343080A (en) * | 2014-09-29 | 2015-02-11 | 北京工业大学 | Method for constructing segmental prefabricating and assembling swing foundation pier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957800A (en) * | 2020-12-29 | 2022-01-21 | 中铁大桥局集团第六工程有限公司 | Synchronous installation method for prestressed steel bundles and prefabricated pier segments |
| CN112982473A (en) * | 2021-03-04 | 2021-06-18 | 北京工业大学 | Unbonded prefabricated frame building foundation node and connection method thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190823 |
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| RJ01 | Rejection of invention patent application after publication |