CN208235310U - A kind of hollow concrete bridge pier of prefabricated centrifugal forming - Google Patents
A kind of hollow concrete bridge pier of prefabricated centrifugal forming Download PDFInfo
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- CN208235310U CN208235310U CN201820318905.7U CN201820318905U CN208235310U CN 208235310 U CN208235310 U CN 208235310U CN 201820318905 U CN201820318905 U CN 201820318905U CN 208235310 U CN208235310 U CN 208235310U
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Abstract
A kind of hollow concrete bridge pier of prefabricated centrifugal forming, is related to bridge substructure prefabrication and assembly construction field, and in particular to a kind of precast concrete bridge pier is made of pier shaft, steel reinforcement framework cage and pier cuff.The pier shaft outer profile cross sectional shape is rounded square, octagon or other polygons, and the pier shaft intracavity section shape is circle.The pier shaft is elongated hollow structure or the hollow structure containing intermediate bulkhead, the steel reinforcement framework cage is arranged in pier shaft, it is made of the framework of steel reinforcement of one layer or two layers or more, each layer steel reinforcement framework cage periphery is wrapped up by concrete, and the main reinforcement length of steel reinforcement framework cage is greater than or equal to prefabricated pier shaft length.A kind of precast concrete bridge pier can be using integrated production technologies such as roll welding steel reinforcement cage, automatic distributing, centrifugal forming concrete, steam curings.
Description
Technical field
The utility model relates to bridge substructure prefabrication and assembly construction fields, and in particular to a kind of concrete pier.
Background technique
It is middle or small at present in highway (containing highway, Class I highway, Class II highway and low-grade highway) and town road
The bridge of across footpath mostly uses greatly cast-in-situ steel reinforced concrete bridge pier.Since cast-in-place bridge pier is directly by Concrete Filled into having bound steel
In the template of tendons skeleton cage, majority uses solid section form, forms through natural curing.The concrete pier of this technique production
There are fabrication of reinforcing cage complexity, pile concrete compression strength lower (generally below C40), impermeability be poor, durability compared with
Easily there are the problems such as crack in difference, and stock utilization is low, construction when be affected by weather, sleet sky is difficult to construct,
Construction period is difficult to ensure, cast in situs construction period is longer, big to the environment and traffic impact of surrounding.
Utility model content
To overcome problem above, the utility model provides that a kind of good mechanical performance, strength grade of concrete be high, batch production
Production production, using the production technology of centrifugal forming, the precast concrete bridge pier that hoisting transportation is convenient, overall economic benefit is high,
To solve a series of problems existing for the concrete pier of cast in situs.
To realize the above target, the utility model is realized in the following way:
A kind of hollow concrete bridge pier of prefabricated centrifugal forming, including pier shaft, steel reinforcement framework cage and pier cuff.The pier
Body section internal cavity shape is elongated circular hollow structure or the circular hollow structure containing intermediate bulkhead；Pier shaft outer profile is cut
Face shape is circle, rounded square, octagon or other polygons；The steel reinforcement framework cage is arranged in pier shaft, by 1 layer or
2 layers of steel reinforcement framework cage composition, each layer steel reinforcement framework cage periphery wrapped up by concrete, the length of steel reinforcement framework cage be greater than or
Equal to pier shaft length.
Preferably, a kind of hollow concrete bridge pier of prefabricated centrifugal forming uses roll welding steel reinforcement cage, automatic distributing, centrifugation
The integrated production technology such as formation of concrete, steam curing.
Preferably, the main reinforcement of steel reinforcement framework cage can be set as whole deformed bars, part in advance according to the design needs
Stress reinforcing bar or whole nonprestressed reinforcements.
Preferably, the pier shaft outer profile cross sectional shape is round or rounded square.Wherein rounded square is equivalent to
Fillet is taken in rectangular bridge pier quadrangle, arc section diameter is greater than 150~250mm, the preferably 200mm of rectangular side length at fillet, respectively
The central angle of arc section is 20~34 °, and the angle of adjacent circular arc segments is 110~124 °.
Preferably, the strength grade of concrete of the pier shaft is not less than C60.
Preferably, the multistory reinforced framework cage is made of main reinforcement and stirrup, the main reinforcement setting of outer reinforcement framework cage
In the inside of stirrup, the outside of stirrup is arranged in the main reinforcement of internal layer steel reinforcement framework cage.
Preferably, the pier shaft top setting pre-embedded steel slab or steel end plate.
Preferably, the settable cross reinforcing bar of the hollow space of the pier shaft, the cross steel-bar arrangement is in distance
In 0.1 times of pier shaft top~0.3 times of long range of pier.
Preferably, tongue and groove section is arranged in the bottom outer surface of the pier shaft.
Preferably, decorative lines is arranged in the pier shaft outer surface.
The utility model has the following beneficial effects:
1, can to avoid or it is larger reduce using construction site cast-in-place concrete structure construction there are the problem of；
2, by way of prefabrication, centrifugal production, on-site consolidation, the construction period can be shortened, can significantly be dropped
Low scene manpower and construction cost；
3, the mode of this prefabrication on-site consolidation, meets the requirement of environmentally protective construction；
4, decorative lines is arranged in pier shaft outer surface, has good aesthetic effect；
5, arrangement of reinforcement and the effective thickness of bridge pier are controlled to guarantee the anti-bending strength of bridge pier；
6, every linear meter(lin.m.) concrete amount is less than the concrete amount of the solid cast-in-place bridge pier of respective cross-section, and anti-bending strength reaches
To the bridge pier of former section form；
7, polygon bridge pier corner being arranged to fillet can preferably prevent the stress in bridge pier corner from concentrating；
8, when steel reinforcement framework cage is full prestressing form of reinforcement, steel end plate set by the both ends of bridge pier can realize reinforcing bar
The prestressed stretch-draw of framework cage, improves the cracking resistance anti-bending strength of pier shaft, and is welded by external reinforcing bar and end plate, may be implemented with
The stress of superstructure connects；When framework of steel reinforcement is non-prestressed form of reinforcement, the main reinforcement of steel reinforcement framework cage extends over pier
Body length, the connection for later period and superstructure provide Bar Anchorage；
9, tongue and groove section is set in the bottom outer surface of pier shaft, keeps the bonding of bridge pier bottom and concrete more firm,
Interface roughness is improved, so that the connection of bridge pier pedestal more fastens.
10, pier shaft inner cavity uses circular cavity, is convenient for centrifugal production, production efficiency and product quality can be improved.
Detailed description of the invention
Fig. 1 is a kind of 1 structural schematic diagram of embodiment of bridge pier of the utility model；
Fig. 2 is a kind of 1 schematic cross-section of embodiment of bridge pier of the utility model；
Fig. 3 is a kind of 2 structural schematic diagram of embodiment of bridge pier of the utility model；
Fig. 4 is a kind of 2 schematic cross-section of embodiment of bridge pier of the utility model；
Serial number in above-mentioned figure: 1- pier shaft, 2- tongue and groove, 3- steel reinforcement framework cage, 4- steel end plate.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
The utility model is further described in face with specific embodiments and the drawings, but following embodiments are only the excellent of the utility model
Embodiment is selected, and not all.Based on the implementation example in the implementation mode, those skilled in the art do not make it is substantive great
Other embodiments obtained, belong to the protection scope of the utility model under the premise of creative work.
Embodiment 1, such as a kind of hollow concrete bridge pier of prefabricated centrifugal forming of Fig. 1 and Fig. 2, including pier shaft 1, framework of steel reinforcement
Cage 3 and pier cuff, the pier shaft are elongated hollow structure, and the steel reinforcement framework cage 3 is arranged in pier shaft, by two layers and with
The framework of steel reinforcement composition that upper center is overlapped, multistory reinforced framework cage periphery are wrapped up by concrete, multistory reinforced framework cage
Length is equal to 1 length of pier shaft；Tongue and groove section 2 is arranged in the pier shaft 1 in 0.15 times of long range of pier of bottom outer surface.Multilayer
The main reinforcement of steel reinforcement framework cage 3 is whole deformed bars, and the multistory reinforced framework cage 3 is made of main reinforcement and stirrup, outer layer steel
The inside of stirrup is arranged in the main reinforcement of tendons skeleton cage, and the outside of stirrup is arranged in the main reinforcement of internal layer steel reinforcement framework cage.The pier shaft 1
The settable steel end plate 4 in top.The outer profile section form of the pier shaft 1 is combined with circular cross-section by square and is formed, fillet
Locate the 200mm that arc section diameter is greater than rectangular side length, the central angle of each arc section is 25 °, and the angle of adjacent circular arc segments is 115 °.
The intracavity section form of the pier shaft 1 is circle, and diameter is less than the 250mm of rectangular side length；The concrete grade of pier shaft is
Cross reinforcing bar is arranged in the hollow space of C70, pier shaft 1, and the cross steel-bar arrangement is in 0.1 times of pier apart from 1 top of pier shaft
In long range.
Embodiment 2, such as a kind of hollow concrete bridge pier of prefabricated centrifugal forming of Fig. 3 and Fig. 4, including pier shaft 1, framework of steel reinforcement
Cage 3 and pier cuff, the pier shaft are elongated hollow structure, and the steel reinforcement framework cage 3 is arranged in pier shaft 1, by two layers and
The framework of steel reinforcement composition that the above center is overlapped, multistory reinforced framework cage periphery are wrapped up by concrete, multistory reinforced framework cage 3
Length be greater than 1 length of pier shaft；Tongue and groove section 2 is arranged in the pier shaft 1 in 0.2 times of long range of pier of bottom outer surface.It is more
The main reinforcement of layer steel reinforcement framework cage 3 is whole nonprestressed reinforcements, and the multistory reinforced framework cage 3 is made of main reinforcement and stirrup, outside
The inside of stirrup is arranged in the main reinforcement of layer steel reinforcement framework cage, and the outside of stirrup is arranged in the main reinforcement of internal layer steel reinforcement framework cage.It is described
The outer profile section form of pier shaft 1 be made of eight sections of straightways.The intracavity section form of the pier shaft 1 is octagon, pier
The concrete grade of body is C70, and cross reinforcing bar is arranged in the hollow space of pier shaft 1, and the cross steel-bar arrangement is apart from pier
In 0.1 times of long range of pier on 1 top of body.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Be only the utility model preference, be not intended to limit the utility model, do not departing from the spirit and scope of the utility model
Under the premise of, the utility model also has various changes and improvements, these changes and improvements both fall within claimed it is practical
In novel range.The protection scope of the present invention is defined by the appended claims and their equivalents.
Claims (4)
1. a kind of hollow concrete bridge pier of prefabricated centrifugal forming, it is characterised in that: including pier shaft, steel reinforcement framework cage and pier set
Hoop, the pier shaft section internal cavity shape be elongated circular hollow structure or the circular hollow structure containing intermediate bulkhead,
The steel reinforcement framework cage is arranged in pier shaft, is made of 1 layer or 2 layers of steel reinforcement framework cage, each layer steel reinforcement framework cage periphery quilt
Concrete is wrapped up, and the length of steel reinforcement framework cage is greater than or equal to pier shaft length.
2. a kind of hollow concrete bridge pier of prefabricated centrifugal forming according to claim 1, it is characterised in that: the pier
The internal cavities cross sectional shape of body is circle.
3. a kind of hollow concrete bridge pier of prefabricated centrifugal forming according to claim 1, it is characterised in that: the reinforcing bar
Framework cage is made of main reinforcement and stirrup.
4. a kind of hollow concrete bridge pier of prefabricated centrifugal forming according to claim 1, it is characterised in that: the bridge pier
Pier shaft concrete using centrifugal production technology form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820318905.7U CN208235310U (en) | 2018-03-07 | 2018-03-07 | A kind of hollow concrete bridge pier of prefabricated centrifugal forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820318905.7U CN208235310U (en) | 2018-03-07 | 2018-03-07 | A kind of hollow concrete bridge pier of prefabricated centrifugal forming |
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| Publication Number | Publication Date |
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| CN208235310U true CN208235310U (en) | 2018-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820318905.7U Active CN208235310U (en) | 2018-03-07 | 2018-03-07 | A kind of hollow concrete bridge pier of prefabricated centrifugal forming |
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| CN (1) | CN208235310U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109837831A (en) * | 2019-03-29 | 2019-06-04 | 上海应用技术大学 | A kind of centrifugation prefabricated assembled concrete bridge pier and construction method |
| WO2020211175A1 (en) * | 2019-04-18 | 2020-10-22 | 广州容联建筑科技有限公司 | Fabricated reinforced concrete bridge pier and construction method therefor |
-
2018
- 2018-03-07 CN CN201820318905.7U patent/CN208235310U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109837831A (en) * | 2019-03-29 | 2019-06-04 | 上海应用技术大学 | A kind of centrifugation prefabricated assembled concrete bridge pier and construction method |
| WO2020211175A1 (en) * | 2019-04-18 | 2020-10-22 | 广州容联建筑科技有限公司 | Fabricated reinforced concrete bridge pier and construction method therefor |
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