CN106869016A - A kind of FRP pipes prefabricated with half half cast-in-place regeneration concrete prestressing force overlapping bridge pier and preparation method - Google Patents
A kind of FRP pipes prefabricated with half half cast-in-place regeneration concrete prestressing force overlapping bridge pier and preparation method Download PDFInfo
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- CN106869016A CN106869016A CN201710093331.8A CN201710093331A CN106869016A CN 106869016 A CN106869016 A CN 106869016A CN 201710093331 A CN201710093331 A CN 201710093331A CN 106869016 A CN106869016 A CN 106869016A
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- concrete
- prefabricated
- bridge pier
- frp
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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
- 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
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Abstract
The present invention discloses a kind of FRP pipes prefabricated with half half cast-in-place regeneration concrete prestressing force overlapping bridge pier and preparation method,Overlapping bridge pier is managed by FRP,Steel pipe,The deformed bar arranged in steel pipe,Normal concrete in cushion cap,FRP manages the regeneration monolith composition and steel pipe between and in regenerated aggregate concrete and cushion cap between steel pipe and presstressed reinforcing steel,Steel pipe,Presstressed reinforcing steel and regenerated aggregate concrete form a prefabricated core column with vertical prestressing,Treat its construction after the completion of,The assembling reinforcement skeleton between prefabricated core column and FRP pipes,And pour regenerated aggregate concrete,Form pillar pier shaft,Pier shaft is formed into FRP pipes together with the cushion cap anchoring for making concrete basic framework with regeneration monolith and overlaps bridge pier with half prefabricated half cast-in-place regeneration concrete prestressing force,Wherein precast prestressed stem is made using pre-tensioning system,Macroeconomic of the present invention is convenient,Significantly improve the antidetonation of bridge pier structure,Bearing capacity and endurance quality.
Description
Technical field
Technical field of civil engineering of the present invention, and in particular to a kind of FRP pipes in advance should with half prefabricated half cast-in-place regeneration concrete
Power overlaps bridge pier.
Background technology
With the quickening of economic fast-developing and urbanization process, old building is removed causes the accumulation of discarded object and new
Building is caused and causes money originally again while environmental pollution, land seizure is caused to the wilderness demand of buildings and resources
The present situation of source shortage grows in intensity, and brings a series of problem of energy resource consumptions, environmental pollution, the lance between people and resource environment
Shield is increasingly aggravated, and walks sustainable development path, and the action recycled to building waste is extremely urgent.
According to statistics, the annual speed with 8% of concrete quantity of refuse that China produces every year increases, it is contemplated that the year two thousand twenty reaches
6.38 hundred million tons, and natural aggregate is consumed with about 8,000,000,000 tons every year of amount, and the concrete in building waste is made into Regenerated Bone
Material concrete or regeneration monolith are positioned in structure, recycled, are turned waste into wealth, and solve asking for resource and environment
Topic, realizes the sustainable development of building trade.
Traditional bridge pier is based on armored concrete form, though having, rigidity is big, good integrity, corrosion resistance and by lateral deflection
Bent problem is more weak.And FRP involved in the present invention manage recycled concrete superposed bridge pier combine conventional steel bar concrete,
The advantage of concrete filled steel tube, prestressing force, building waste recycling and FRP new materials, construction is simple, and cost is relatively low, has
Effect solves the low shortcoming of the anticorrosive difference of traditional bridge pier, anti-flexion capabilities.
The content of the invention
To provide a kind of energy-conserving and environment-protective, the corrosion-resistant, concrete filled steel tube that anti-flexion capabilities are good, the present invention provides a kind of FRP
Pipe prefabricated with half half cast-in-place regeneration concrete prestressing force overlapping bridge pier and preparation method.Pier shaft uses FRP composites, FRP pipes
Concentric position places precast prestressed steel tube regeneration concrete-core column, pouring reinforcement regeneration coagulation between FRP pipes and prefabricated core column
Soil, cushion cap then to regenerate monolith as matrix, pours normal concrete and is made.
In order to solve the above problems and realizing above-mentioned requirements, the present invention takes following technical solution：A kind of FRP pipes
Half cast-in-place regeneration concrete prestressing force overlapping bridge pier prefabricated with half, it is characterised in that many presstressed reinforcing steels, steel pipe are arranged in steel pipe
Regenerated aggregate concrete, steel pipe, presstressed reinforcing steel and regenerated aggregate concrete formation one in pipe are poured between inwall and presstressed reinforcing steel
Individual prefabricated core column, outermost layer is managed for FRP, the pouring reinforcement regenerated aggregate concrete between prefabricated core column and FRP pipes, and cushion cap is for again
Raw monolith cushion cap.
Described presstressed reinforcing steel is spiral, indented wire or steel strand wires.
Pier shaft section is circular, square, rectangle.
There can be multiple prefabricated core columns in one pier shaft, regenerated aggregate concrete is poured between contiguous prefabricated stem, constitute
Many stems overlap bridge pier.
Prefabricated core column is inside and outside to pour regenerated aggregate concrete.
Pier shaft outermost layer is managed for FRP.
A kind of cast-in-place regeneration concrete prestressing force of FRP pipes prefabricated with half half overlaps the preparation method of bridge pier, it is characterised in that
（1）Place many presstressed reinforcing steels along its length in steel pipe, regenerated aggregate concrete is poured in steel pipe, vibrate close
It is real；
（2）After it reaches some strength, cut off presstressed reinforcing steel and put and open, monolith cushion cap to be regenerated has been poured
Into；
(3) after reaching some strength, stem is connected by cast-in fixing bolt and cushion cap, FRP pipes is placed in steel pipe concentric position, and
Colligation stirrup, vertical muscle, pour regenerated aggregate concrete between, that is, form FRP pipe half cast-in-place regeneration concretes prefabricated with half pre-
Stress overlaps bridge pier.
The difference of FRP bores and prefabricated core column radius is more than 10cm.
Waste and old concrete block is fully watered in advance wetting, when pouring regeneration monolith cushion cap, in forming panel
The interior waste and old concrete block for delivering pre-wetting, adds normal concrete（8）, regenerate monolith and normal concrete
Weight ratio 2:1-4:Between 1.
Novelty of the invention：1. pier shaft outer layer of composite material FRP pipes remove later stage form removal from as a part for structure
Operation, shortens the construction period, saves human and material resources, financial resources, and FRP manages the characteristics of having high-strength light, makes the anticorrosive of bridge pier
Ability, endurance quality are significantly improved;；Prefabricated concrete-filled steel tube stem is significantly carried compared with resistance to compression, shear resistance for armored concrete
Height, can reduce pier shaft section under same bearer power, again can significantly less concrete amount, reduction while expansion using space
Dead load；Anti- flexion capabilities preferably, solve the problems, such as bridge pier local buckling；Plasticity, toughness are stronger, and reliable operation degree is obtained
Improve；Can prevent Brittleness of Concrete from destroying, give full play to the effect of concrete；Deformed bar can be with steel tube concrete core pillar
The elastic stiffness and ductility of bridge pier are effectively improved, and the residual deformation of the bridge pier after earthquake can be reduced, energy dissipation capacity is strong, with good
Good self-resetting capability；Regeneration concrete is poured in pier shaft, with green, energy-conservation, the characteristics of reduces cost；Using regenerating block
Concrete material does cushion cap, and processing procedure when discarded concrete is utilized is simplified very much greatly, building waste has been obtained efficiently
Recycle, realize the sustainable development of construction industry.
Brief description of the drawings
Fig. 1 is a kind of circular cross-section FRP pipes and circular cross-section Prefabricated concrete-filled steel tube prestressing force stem top view
Fig. 2 is a kind of circular cross-section FRP pipes and square section preformed concrete filled steel tube prestressing force stem top view.
Fig. 3 is a kind of square-section FRP pipes and circular cross-section Prefabricated concrete-filled steel tube prestressing force stem top view.
Fig. 4 is a kind of square-section FRP pipes and square section preformed concrete filled steel tube prestressing force stem top view.
Fig. 5 is cushion cap shaft side figure.
Fig. 6 is a kind of cast-in-place regeneration concrete prestressing force overlapping bridge pier top view of FRP pipes prefabricated with half half.
Fig. 7 is a kind of many stem overlapping bridge pier top views of cast-in-place regeneration concrete prestressing force of FRP pipes prefabricated with half half.
Fig. 8 is a kind of cast-in-place regeneration concrete prestressing force overlapping bridge pier shaft side figure of FRP pipes prefabricated with half half.
In figure：1-FRP is managed；2-stirrup；3-vertical muscle；4-regeneration concrete；5-steel pipe；6-deformed bar, 7-
Regeneration monolith, normal concrete（8）.
Specific embodiment
With reference to Figure of description, the present invention will be further described.
Embodiment 1:A kind of circular cross-section FRP pipes overlap bridge pier with circular cross-section Prefabricated concrete-filled steel tube prestressing force.
1., according to design requirement, steel pipe is determined（5）, regeneration monolith（7）Size and presstressed reinforcing steel（6）Quantity,
Diameter, position, and regenerated aggregate concrete（4）, normal concrete（8）Intensity and match ratio.
2. steel pipe is fixed（5）, by design requirement arrangement, tensioning, anchoring prestress reinforcing bar（6）And cushion cap template has been propped up, will
Regeneration monolith（7）There is the arrangement in gap wherein.
3. by regenerated aggregate concrete（4）And normal concrete is pumped to steel pipe respectively（5）And in cushion cap template, and vibrate
It is closely knit.
4. aggregate concrete to be regenerated（4）After reaching some strength, presstressed reinforcing steel is cut off（6）, put and open, formed prefabricated
Concrete filled steel tube prestressing force stem, and by cushion cap form removable, form regeneration monolith cushion cap.
5. Prefabricated concrete-filled steel tube prestressing force stem and regeneration monolith cushion cap are transported to job site, will secondly
Person anchors together, and is fixed on bridge pier precalculated position.
6. muscle is indulged in colligation prefabricated core column periphery（3）, stirrup（2）, and FRP pipes are placed on the concentric side of prefabricated core column most
Outer layer, pours regenerated aggregate concrete（4）, that is, formed with 5 the FRP pipes and half prefabricated half cast-in-place regeneration coagulation of presstressed reinforcing steel
Native prestressing force overlaps bridge pier.
Embodiment 2:A kind of circular cross-section FRP pipes overlap bridge pier with square section preformed concrete filled steel tube prestressing force.
1., according to design requirement, steel pipe is determined（5）, regeneration monolith（7）Size and presstressed reinforcing steel（6）Quantity,
Diameter, position, and regenerated aggregate concrete（4）, normal concrete（8）Intensity and match ratio.
2. steel pipe is fixed（5）, by design requirement arrangement, tensioning, anchoring prestress reinforcing bar（6）And cushion cap template has been propped up, will
Regeneration monolith（7）There is the arrangement in gap wherein.
3. by regenerated aggregate concrete（4）And normal concrete is pumped to steel pipe respectively（5）And in cushion cap template, and vibrate
It is closely knit.
4. aggregate concrete to be regenerated（4）After reaching some strength, presstressed reinforcing steel is cut off（6）, put and open, formed prefabricated
Concrete filled steel tube prestressing force stem, and by cushion cap form removable, form regeneration monolith cushion cap.
5. Prefabricated concrete-filled steel tube prestressing force stem and regeneration monolith cushion cap are transported to job site, will secondly
Person anchors together, and is fixed on bridge pier precalculated position.
6. muscle is indulged in colligation prefabricated core column periphery（3）, stirrup（2）, and FRP pipes are placed on the concentric side of prefabricated core column most
Outer layer, pours regenerated aggregate concrete（4）, that is, formed with 9 the FRP pipes and half prefabricated half cast-in-place regeneration coagulation of presstressed reinforcing steel
Native prestressing force overlaps bridge pier.
Embodiment 3:A kind of square-section FRP pipes overlap bridge pier with circular cross-section Prefabricated concrete-filled steel tube prestressing force.
The overlapping Bridge Pier Construction step is consistent with embodiment 1.
Embodiment 4:A kind of square-section FRP pipes overlap bridge pier with square section preformed concrete filled steel tube prestressing force.
The overlapping Bridge Pier Construction step is consistent with embodiment 2.
Embodiment 5:A kind of many stem overlapping bridge piers of cast-in-place regeneration concrete prestressing force of FRP pipes prefabricated with half half.
1., according to design requirement, steel pipe is determined（5）, regeneration monolith（7）Size and presstressed reinforcing steel（6）Quantity,
Diameter, position, and regenerated aggregate concrete（4）, normal concrete（8）Intensity and match ratio.
2. steel pipe is fixed（5）, by design requirement arrangement, tensioning, anchoring prestress reinforcing bar（6）And cushion cap template has been propped up, will
Regeneration monolith（7）There is the arrangement in gap wherein.
3. by regenerated aggregate concrete（4）And normal concrete is pumped to steel pipe respectively（5）And in cushion cap template, and vibrate
It is closely knit.
4. aggregate concrete to be regenerated（4）After reaching some strength, presstressed reinforcing steel is cut off（6）, put and open, formed prefabricated
Concrete filled steel tube prestressing force stem, and by cushion cap form removable, form regeneration monolith cushion cap.
5. Prefabricated concrete-filled steel tube prestressing force stem and regeneration monolith cushion cap are transported to job site, by its anchor
Gu together, and it is fixed on bridge pier precalculated position.
6. muscle is indulged in colligation prefabricated core column periphery（3）, stirrup（2）, and FRP pipes are placed on the concentric side of prefabricated core column most
Outer layer, pours regenerated aggregate concrete（4）, that is, form the twin-core post FRP pipes prefabricated with half half with 10 presstressed reinforcing steels cast-in-place
Regeneration concrete prestressed column overlaps bridge pier.
In specific embodiment, can be using circle, rectangle, the square many stems overlapping bridge pier being combined, and FRP material also may be used
With by carbon fibre reinforced composite（CFRP）, glass fibre reinforced composion（GFRP）Replaced Deng organic composite material.
More than, only presently preferred embodiments of the present invention, but protection scope of the present invention is not limited thereto, any to be familiar with sheet
Those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in should all be covered
Within the scope of the present invention.Therefore, the protection domain that protection scope of the present invention should be defined by claim is defined.
Claims (9)
1. a kind of cast-in-place regeneration concrete prestressing force of FRP pipes prefabricated with half half overlaps bridge pier, it is characterised in that steel pipe（5）Middle cloth
Put many presstressed reinforcing steels（6）, steel pipe（5）Inwall and presstressed reinforcing steel（6）Between pour regenerated aggregate concrete（4）, steel pipe（5）、
Presstressed reinforcing steel（6）With regenerated aggregate concrete in pipe（4）A prefabricated core column is formed, outermost layer is managed for FRP（1）, in pre- coremaking
Post is managed with FRP（1）Between pouring reinforcement regenerated aggregate concrete（4）, cushion cap is regeneration monolith cushion cap.
2. a kind of cast-in-place regeneration concrete prestressing force of FRP pipes prefabricated with half half according to claim 1 overlaps bridge pier, and it is special
Levy and be, described presstressed reinforcing steel（6）It is spiral, indented wire or steel strand wires.
3. a kind of cast-in-place regeneration concrete prestressing force of FRP pipes prefabricated with half half according to claim 1 overlaps bridge pier, and it is special
Levy and be, pier shaft section is circular, square, rectangle.
4. a kind of cast-in-place regeneration concrete prestressing force of FRP pipes prefabricated with half half according to claim 1 overlaps bridge pier, and it is special
Levy and be, there can be multiple prefabricated core columns in a pier shaft, regenerated aggregate concrete is poured between contiguous prefabricated stem, constitute many
Stem overlaps bridge pier.
5. a kind of cast-in-place regeneration concrete prestressing force of FRP pipes prefabricated with half half according to claim 1 overlaps bridge pier, and it is special
Levy and be, prefabricated core column is inside and outside to pour regenerated aggregate concrete（4）.
6. a kind of cast-in-place regeneration concrete prestressing force of FRP pipes prefabricated with half half according to claim 1 overlaps bridge pier, and it is special
Levy and be, pier shaft outermost layer is managed for FRP（1）.
7. a kind of cast-in-place regeneration concrete prestressing force of FRP pipes according to claim 1 prefabricated with half half overlaps the system of bridge pier
Preparation Method, it is characterised in that
（1）Place many presstressed reinforcing steels along its length in steel pipe, regenerated aggregate concrete is poured in steel pipe, vibrate close
It is real；
（2）After it reaches some strength, cut off presstressed reinforcing steel and put and open, monolith cushion cap to be regenerated has been poured
Into；
(3) after reaching some strength, stem is connected by cast-in fixing bolt and cushion cap, FRP pipes is placed in steel pipe concentric position, and
Colligation stirrup, vertical muscle, pour regenerated aggregate concrete between, that is, form FRP pipe half cast-in-place regeneration concretes prefabricated with half pre-
Stress overlaps bridge pier.
8. a kind of cast-in-place regeneration concrete prestressing force of FRP pipes prefabricated with half half according to claim 7 overlaps bridge pier, and it is special
Levy and be, the difference of FRP bores and prefabricated core column radius is more than 10cm.
9. a kind of cast-in-place regeneration concrete prestressing force of FRP pipes prefabricated with half half according to claim 7 overlaps bridge pier, and it is special
Levy and be, waste and old concrete block is fully watered in advance wetting, when pouring regeneration monolith cushion cap, in forming panel
The waste and old concrete block of pre-wetting is delivered, normal concrete is added（8）, monolith is regenerated with normal concrete
Weight ratio is 2:1-4:Between 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710093331.8A CN106869016A (en) | 2017-02-21 | 2017-02-21 | A kind of FRP pipes prefabricated with half half cast-in-place regeneration concrete prestressing force overlapping bridge pier and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710093331.8A CN106869016A (en) | 2017-02-21 | 2017-02-21 | A kind of FRP pipes prefabricated with half half cast-in-place regeneration concrete prestressing force overlapping bridge pier and preparation method |
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| CN106869016A true CN106869016A (en) | 2017-06-20 |
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