CN109837831A - A kind of centrifugation prefabricated assembled concrete bridge pier and construction method - Google Patents
A kind of centrifugation prefabricated assembled concrete bridge pier and construction method Download PDFInfo
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- CN109837831A CN109837831A CN201910251580.4A CN201910251580A CN109837831A CN 109837831 A CN109837831 A CN 109837831A CN 201910251580 A CN201910251580 A CN 201910251580A CN 109837831 A CN109837831 A CN 109837831A
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- centrifugation
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- reinforcing bar
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Abstract
The invention discloses a kind of centrifugation prefabricated assembled concrete bridge pier and construction methods, comprising: centrifugation Precast Pier Columns, cushion cap, several pier stud reinforcing bars, several cushion cap reinforcing bars and several grout sleeves.Wherein, the first end for being centrifuged Precast Pier Columns is set to the upper surface of cushion cap, and pier stud reinforcing bar is equipped in centrifugation Precast Pier Columns, and the first end of several pier stud reinforcing bars is set in grout sleeve；The cushion cap reinforcing bar is equipped in the cushion cap, the first end of several cushion cap reinforcing bars stretches out in the upper surface of cushion cap and corresponds with several pier stud reinforcing bars；The first end of several cushion cap reinforcing bars is inserted into corresponding several grout sleeves, and cushion cap reinforcing bar is connected with pier stud reinforcing bar by grout sleeve.Using prefabrication bridge pier, and construction technology is simple, and the construction period is short, and human cost is low.
Description
Technical field
The invention belongs to technical field of bridge construction more particularly to a kind of centrifugation prefabricated assembled concrete bridge pier and constructions
Method.
Background technique
In the prior art, the Bridge Pier Construction of Bridges in Our Country substructure mostly uses greatly cast-in-situ construction method, this construction party
Method is applied man-hour requirement road pavement and is blocked, and traffic congestion, environmental pollution are caused, in addition the cast-in-place construction duration is long, construction quality
It is not easy to control, and bracket, the template consumption in construction are big, operating expenses is high, and construction technology falls behind, and process is cumbersome, and is difficult to
Meet the needs of today's society rapid economic development, it is incompatible with the requirement of urban construction and development.
For the length of bridge generally at several kilometers or more or even tens kilometers, this just determines that bridge must be by a large amount of bridge
Across composition.To shorten construction period as far as possible, it is ensured that construction quality reduces the influence to ambient enviroment, reduces the influence to traffic,
Bridge Pier Construction preferably uses the form of construction work prefabricated in precast plant, live location and installation is connect with cushion cap.
Traditional bridge pier generally uses solid section, and concrete material dosage is larger, and field cast-in-place construction period is long, applies
Working medium amount is not easy to control, and bracket, the template consumption in construction are big, and operating expenses is high, and the site operation period is long.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of centrifugation prefabricated assembled concrete bridge pier and construction method, with
Shorten construction period.
To solve the above problems, the technical solution of the present invention is as follows:
A kind of centrifugation prefabricated assembled concrete bridge pier of the invention, comprising: centrifugation Precast Pier Columns, cushion cap, several pier studs
Reinforcing bar, several cushion cap reinforcing bars and several grout sleeves；Wherein,
The first end of the centrifugation Precast Pier Columns is set to the upper surface of the cushion cap,
The pier stud reinforcing bar is equipped in the centrifugation Precast Pier Columns, the first end of several pier stud reinforcing bars is set to the filling
It starches in sleeve；
The cushion cap reinforcing bar is equipped in the cushion cap, the first end of several cushion cap reinforcing bars stretches out in the upper of the cushion cap
Surface is simultaneously corresponded with several pier stud reinforcing bars；
The first ends of several cushion cap reinforcing bars is inserted into corresponding several grout sleeves, the cushion cap reinforcing bar and
The pier stud reinforcing bar is connected by the grout sleeve.
Centrifugation prefabricated assembled concrete bridge pier of the invention further includes leveling concrete layer, the leveling concrete layer
Set on the upper surface of the cushion cap.
The side of centrifugation prefabricated assembled concrete bridge pier of the invention, the centrifugation Precast Pier Columns is additionally provided with bridge pier hoop
Muscle.
Centrifugation prefabricated assembled concrete bridge pier of the invention, several grout sleeves are in the centrifugation Precast Pier Columns
Circumferentially it is uniformly distributed.
Centrifugation prefabricated assembled concrete bridge pier of the invention, the pier stud reinforcing bar are inserted into the length in the grout sleeve
For the half of the grout sleeve length；It is that the grout sleeve is long that the cushion cap reinforcing bar, which is inserted into the length in the grout sleeve,
The half of degree.
Centrifugation prefabricated assembled concrete bridge pier of the invention, the centrifugation Precast Pier Columns are sky made of centrifugal casting
Heart cylinder concrete prefabricated element.
A kind of construction method of the invention manufactures above-mentioned centrifugation prefabricated assembled concrete bridge pier, the specific steps are as follows:
S1: being inserted in the grout sleeve on pier stud reinforcing bar, the prefabricated centrifugation Precast Pier Columns pour the cushion cap at the scene
And the preset cushion cap reinforcing bar checks top surface absolute altitude after bearing platform construction, pours leveling concrete layer；
S2: lifting the centrifugation Precast Pier Columns, and after positioning, the grout sleeve for being sheathed on the pier stud reinforcing bar is inserted in institute
State cushion cap reinforcing bar, and the mud jacking into the grout sleeve；
S3: when the centrifugation Precast Pier Columns and the cushion cap bonding strength reach design requirement, in the prefabricated pier of centrifugation
The self-compaction slightly expanded concrete that twice of centrifugation Precast Pier Columns diameter height is poured inside column, reaches to interior wadding weft variation
After age, structure forms completely.
The present invention due to using the technology described above, makes it have the following advantages that and actively imitate compared with prior art
Fruit:
One embodiment of the invention by setting centrifugation Precast Pier Columns, cushion cap, several pier stud reinforcing bars, several cushion cap reinforcing bars and
Several grout sleeves, centrifugation Precast Pier Columns are equipped with pier stud reinforcing bar, and cushion cap is equipped with cushion cap reinforcing bar corresponding with pier stud reinforcing bar,
It is arranged grout sleeve respectively on several pier stud reinforcing bars, lifting is to predetermined position after being centrifuged Precast Pier Columns, by grout sleeve set
On cushion cap reinforcing bar, to realize the connection of centrifugation Precast Pier Columns and cushion cap, using prefabrication pier stud, and construction technology is simple
Single, the construction period is short, and human cost is low.
Detailed description of the invention
Fig. 1 is the elevation of centrifugation prefabricated assembled concrete bridge pier of the invention；
Fig. 2 is the top view of centrifugation prefabricated assembled concrete bridge pier of the invention；
Fig. 3 is the schematic diagram of the cushion cap of centrifugation prefabricated assembled concrete bridge pier of the invention；
Fig. 4 is the schematic diagram of the centrifugation Precast Pier Columns of centrifugation prefabricated assembled concrete bridge pier of the invention；
Fig. 5 is the flow chart of the construction method of centrifugation prefabricated assembled concrete bridge pier of the invention.
Description of symbols: 1: centrifugation Precast Pier Columns；2: grout sleeve；3: cushion cap；4: pier stud reinforcing bar；5: cushion cap reinforcing bar；
6: stirrup；7: leveling concrete layer.
Specific embodiment
Below in conjunction with the drawings and specific embodiments to a kind of centrifugation prefabricated assembled concrete bridge pier proposed by the present invention and
Construction method is described in further detail.According to following explanation and claims, advantages and features of the invention will be become apparent from.
Embodiment one
Referring to Fig. 1 to Fig. 4, in one embodiment, a kind of centrifugation prefabricated assembled concrete bridge pier, comprising: centrifugation is pre-
Pier stud 1, cushion cap 3, several pier stud reinforcing bars 4, several cushion cap reinforcing bars 5 and several grout sleeves 2 processed.Wherein, Precast Pier Columns 1 are centrifuged
First end be set to cushion cap 3 upper surface, centrifugation Precast Pier Columns 1 in be equipped with pier stud reinforcing bar 4, the first end of several pier stud reinforcing bars 4
It stretches out in centrifugation Precast Pier Columns 1 and is located in the hollow cavity of grout sleeve 2.Cushion cap reinforcing bar 5, several pile cap steels are equipped in cushion cap 3
The first end of muscle 5 stretches out in the upper surface of cushion cap 3 and corresponds with several pier stud reinforcing bars 4.One-to-one pier stud reinforcing bar 4
First end and the first end of cushion cap reinforcing bar 5 are inserted into corresponding grout sleeve 2, and are connected by grout sleeve 2.Be arranged from
Heart Precast Pier Columns 1, cushion cap 3, several pier stud reinforcing bars 4, several cushion cap reinforcing bars 5 and several grout sleeves 2 are centrifuged Precast Pier Columns 1
It is equipped with pier stud reinforcing bar 4, cushion cap 3 is equipped with cushion cap reinforcing bar 5 corresponding with pier stud reinforcing bar 4, when installation, present several foot stall steels
Grout sleeve 2 is arranged on muscle 4 respectively, after being centrifuged the lifting to predetermined position of Precast Pier Columns 1, grout sleeve 2 is sheathed on cushion cap
On reinforcing bar 5, to realize the connection of centrifugation Precast Pier Columns 1 and cushion cap 3, using prefabrication bridge pier, and construction technology is simple, construction
Short time limit, human cost are low.
Centrifugation precast pier 1 connect with cushion cap 3 stress reliably, bridge pier position it is simple, easy for construction, easy to operate, be easy to
Control, can effectively reduce the workload of site welding and concreting, accelerate construction progress.Batch production, mass can be achieved
Production, scene only need to install prefabricated components, reduce live formwork, prick the cumbersome process such as muscle, maintenance, demoulding.It is suitable
Together in city remake old bridge.Remake old bridge, enlarging especially in heavy traffic section, since speed of application is fast, occupied ground
It is small, noise is small etc., the interference to urban transportation can be substantially reduced, quickly resumed traffic.It is centrifuged Precast Pier Columns 1 and cushion cap 3
Connecting portion reinforcing bar is connected using grout sleeve 2, reduces the unstable quality of site welding.Cushion cap 3, centrifugation Precast Pier Columns
Splicing between 1 has reinforcing bar to be mutually butted, and high-intensitive cement mortar 7 is perfused later, so that each component has good connection
Performance participates in stress jointly.
The extension of the reinforcing bar of certain length is reserved by the top of cushion cap 3, the bottom end of centrifugation Precast Pier Columns 1 is reserved with filling
Starch sleeve 2, cushion cap reinforcing bar 5 is contained in grout sleeve 2 and is perfused with grouting material in grout sleeve 2, by material in sleeve it
Between cohere interlocking connection cushion cap reinforcing bar 5 and pier stud reinforcing bar 4.
It further, further include leveling concrete layer 7, leveling concrete layer 7 is set to the upper surface of cushion cap 3.Level coagulation
Soil layer 7 with a thickness of 2.5cm thickness mortar.
Further, the side for being centrifuged Precast Pier Columns 1 is additionally provided with bridge pier stirrup 6, in order to meet splicing demand, some keys
Part needs to carry out special cloth muscle design.
Further, several grout sleeves 2 are uniformly distributed in the circumferential direction of centrifugation Precast Pier Columns 1.
Preferably, the length that pier stud reinforcing bar 4 is inserted into grout sleeve 2 is the half of 2 length of grout sleeve.Cushion cap reinforcing bar 5
The length being inserted into grout sleeve 2 is the half of 2 length of grout sleeve.
Further, centrifugation Precast Pier Columns 1 are hollow cylinder concrete prefabricated element made of centrifugal casting.Centrifugation is pre-
Pier stud 1 processed does not need the devices such as the installation island being arranged in existing interconnection technique, can accelerate speed of application, furthermore be centrifuged Precast Pier Columns
1 directly connect with cushion cap 3, and overall stability is also better than existing interconnection technique.Each component shape is relatively regular, along be
Production is industrialized in precast plant, construction quality is easy to control.
The prefabrication process for being centrifuged Precast Pier Columns 1 is as follows:
Step 1: treated main reinforcement is packed into steel reinforcement cage binding machine, reinforcing bar is constantly wound reinforcing bar in main reinforcement
Cage, and the lower rebar extension elongation of pier shaft is the pre-buried grout sleeve 2 of half of length sleeve, it should be ensured that and its spacing is unanimously simultaneously
It is corresponded with the stretching reinforcing bar of cushion cap 3.
Step 2: steel reinforcement cage is hung in prefabricated molds using overhead crane after the completion of binding.And there are non-for prefabricated molds
Perfusion area is used to fill the pre-buried grout sleeve 2 of the lower part of pier shaft.Steel reinforcement cage both ends are equipped with nut, and steel reinforcement cage is hung in punching block
Afterwards, both ends are secured to using the steel plate of annular, and bolt corresponding with nut is provided on steel plate.
Step 3: oil well cracking acid pumping truck gradually fills concrete and enters in model in filling concrete area.When filling concrete is completed
Afterwards, cotton thread (preventing water in concrete from losing in centrifugal process) is enclosed around one around the punching block of perfusion area and hang next another
Half punching block, is closed.
Be centrifuged step 4: ready pier shaft is put into eccentric groove, centrifugal action by a slow speed, low speed, middling speed, height
Fast four-stage carries out, to guarantee concrete compaction.The control of centrifugation time is generally determined according to centrifugation rate.Doughnut-shaped steel plate
Hollow space will use plantation rubber closure, be convenient for centrifugal forming.
Step 5: the centrifugation pier shaft through centrifugal forming is put into the pond that concrete is built into, concrete cover is covered
Steam press maintenance is carried out, steam curing must be uniform, otherwise may change the contiguity matching precision of bridge pier.
Step 6: punching block is recalled after reaching the steam pressure time.It dismantles the fixing bolts of two sides, is by overhead crane
Model can be dismantled.It should handle with care in handling process, avoid collision side, the angle of damaged member, influence assembly.
Embodiment two
Referring to Fig. 5, a kind of construction method is specific to walk for the centrifugation prefabricated assembled concrete bridge pier in embodiment one
It is rapid as follows:
S1: being inserted in grout sleeve 2 on pier stud reinforcing bar 4, prefabricated centrifugation Precast Pier Columns 1, pours cushion cap 3 and preset at the scene
Cushion cap reinforcing bar 5 checks top surface absolute altitude after cushion cap 3 is constructed, and pours leveling concrete layer 7.
S2: the grout sleeve 2 for being sheathed on pier stud reinforcing bar 4 after positioning, is inserted in pile cap steel by lifting centrifugation Precast Pier Columns 1
Muscle 5, and the perfusion perfusion slurry into grout sleeve 2.
S3: it when centrifugation Precast Pier Columns 1 and 3 bonding strength of cushion cap reach design requirement, is poured inside centrifugation Precast Pier Columns 1
The self-compaction slightly expanded concrete of twice of centrifugation 1 diameter height of Precast Pier Columns is filled out after core concrete reaches age after interior, structure completely at
Type.
It is a kind of safe and reliable, construction efficiency is improved, the construction period of bridge can be shortened, bridge can not only be effectively relieved
Urban traffic environment is influenced when construction, and also ensures the splicing intensity and globality of centrifugation Precast Pier Columns 1 and cushion cap 3.
The linkage section three parts for being centrifuged Precast Pier Columns 1, cushion cap 3 and grout sleeve 2 form assembled system, solve existing unit construction bridge
Pier shaft can not be centrifuged prefabricated problem in pier, guarantee the convenience of component assembling process.It solves and connects in existing assembled bridge pier
Connect globality and fastness of the section concrete there may be uncompacted problem is poured, after guaranteeing component assembly.It is centrifuged prefabricated pier
Column 1 and cushion cap 3 connects using grout sleeve 2, and stress performance is good, and quality is high, saving template, speed of application is fast, the period is short and
Simple process.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Mode.Even if to the present invention, various changes can be made, if these variations belong to the model of the claims in the present invention and its equivalent technologies
Within enclosing, then still fall within the protection scope of the present invention.
Claims (7)
1. a kind of centrifugation prefabricated assembled concrete bridge pier characterized by comprising centrifugation Precast Pier Columns, cushion cap, several pier studs
Reinforcing bar, several cushion cap reinforcing bars and several grout sleeves；Wherein,
The first end of the centrifugation Precast Pier Columns is set to the upper surface of the cushion cap,
The pier stud reinforcing bar is equipped in the centrifugation Precast Pier Columns, the first end of several pier stud reinforcing bars is covered set on the grouting
In cylinder；
The cushion cap reinforcing bar is equipped in the cushion cap, the first end of several cushion cap reinforcing bars stretches out in the upper surface of the cushion cap
And it is corresponded with several pier stud reinforcing bars；
The first ends of several cushion cap reinforcing bars is inserted into corresponding several grout sleeves, the cushion cap reinforcing bar and described
Pier stud reinforcing bar is connected by the grout sleeve.
2. centrifugation prefabricated assembled concrete bridge pier described in accordance with the claim 1, which is characterized in that further include leveling concrete
Layer, the leveling concrete layer are set to the upper surface of the cushion cap.
3. centrifugation prefabricated assembled concrete bridge pier described in accordance with the claim 1, which is characterized in that the centrifugation Precast Pier Columns
Side be additionally provided with bridge pier stirrup.
4. centrifugation prefabricated assembled concrete bridge pier described in accordance with the claim 3, which is characterized in that several grout sleeves
It is uniformly distributed in the circumferential direction of the centrifugation Precast Pier Columns.
5. centrifugation prefabricated assembled concrete bridge pier described in accordance with the claim 1, which is characterized in that the pier stud reinforcing bar insertion
Length in the grout sleeve is the half of the grout sleeve length；The cushion cap reinforcing bar is inserted into the grout sleeve
Length is the half of the grout sleeve length.
6. being centrifuged prefabricated assembled concrete bridge pier according to claim 4, which is characterized in that the centrifugation Precast Pier Columns
For hollow cylinder concrete prefabricated element made of centrifugal casting.
7. a kind of construction method, which is characterized in that centrifugation prefabricated assembled concrete bridge pier described in manufacturing claims 1-5,
Specific step is as follows:
S1: being inserted in the grout sleeve on pier stud reinforcing bar, the prefabricated centrifugation Precast Pier Columns, pours the cushion cap and pre- at the scene
The cushion cap reinforcing bar is set, after bearing platform construction, top surface absolute altitude is checked, pours leveling concrete layer；
S2: lifting the centrifugation Precast Pier Columns, and after positioning, the grout sleeve for being sheathed on the pier stud reinforcing bar is inserted in described hold
Platform reinforcing bar, and the mud jacking into the grout sleeve；
S3: when the centrifugation Precast Pier Columns and the cushion cap bonding strength reach design requirement, in the centrifugation Precast Pier Columns
Portion pours the self-compaction slightly expanded concrete of twice of centrifugation Precast Pier Columns diameter height, reaches age to interior wadding weft variation
Afterwards, structure forms completely.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457171A (en) * | 2017-12-25 | 2018-08-28 | 上海公路投资建设发展有限公司 | Steel grouting bellows and its production method for precast assembly bridge pier |
| CN110202690A (en) * | 2019-07-22 | 2019-09-06 | 浙江省交通规划设计研究院有限公司 | A kind of prefabricated cushion cap construction of two columned pier and its construction method |
| CN110219236A (en) * | 2019-07-17 | 2019-09-10 | 福州大学 | A kind of the precast assembly pillarwork and its construction method of insertion slot type connection |
| CN110230319A (en) * | 2019-07-05 | 2019-09-13 | 浙江省交通规划设计研究院有限公司 | Prefabricated cushion cap and bridge pier |
| CN111075111A (en) * | 2020-01-06 | 2020-04-28 | 严冬华 | Stand module and assembled cage structure building of assembled building |
| CN111705630A (en) * | 2020-06-01 | 2020-09-25 | 上海市城市建设设计研究总院（集团）有限公司 | Prefabricated hollow pier with unconnected inner steel bars |
| CN112609562A (en) * | 2020-11-18 | 2021-04-06 | 四川交投建设工程股份有限公司 | Assembled bridge substructure and construction method thereof |
| CN112709144A (en) * | 2020-12-25 | 2021-04-27 | 扬州市市政建设处 | Assembled special-shaped pier column and construction method |
| CN112853946A (en) * | 2021-03-18 | 2021-05-28 | 长安大学 | Grouting sleeve, grouting sleeve connected assembled pier and construction method thereof |
| CN113373800A (en) * | 2021-06-24 | 2021-09-10 | 上海应用技术大学 | Hollow prefabricated assembled pier adopting grouting sleeve and connecting method thereof |
| CN113668361A (en) * | 2021-06-04 | 2021-11-19 | 武汉理工大学 | Fabricated concrete double-layer gate-type pier structure and construction method |
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| CN208235310U (en) * | 2018-03-07 | 2018-12-14 | 建华建材（安徽）有限公司 | A kind of hollow concrete bridge pier of prefabricated centrifugal forming |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457171A (en) * | 2017-12-25 | 2018-08-28 | 上海公路投资建设发展有限公司 | Steel grouting bellows and its production method for precast assembly bridge pier |
| CN110230319A (en) * | 2019-07-05 | 2019-09-13 | 浙江省交通规划设计研究院有限公司 | Prefabricated cushion cap and bridge pier |
| CN110219236A (en) * | 2019-07-17 | 2019-09-10 | 福州大学 | A kind of the precast assembly pillarwork and its construction method of insertion slot type connection |
| CN110219236B (en) * | 2019-07-17 | 2024-02-06 | 福州大学 | Prefabricated spliced pier column structure connected through slots and construction method thereof |
| CN110202690A (en) * | 2019-07-22 | 2019-09-06 | 浙江省交通规划设计研究院有限公司 | A kind of prefabricated cushion cap construction of two columned pier and its construction method |
| CN111075111A (en) * | 2020-01-06 | 2020-04-28 | 严冬华 | Stand module and assembled cage structure building of assembled building |
| CN111705630B (en) * | 2020-06-01 | 2021-09-10 | 上海市城市建设设计研究总院（集团）有限公司 | Prefabricated hollow pier with unconnected inner steel bars |
| CN111705630A (en) * | 2020-06-01 | 2020-09-25 | 上海市城市建设设计研究总院（集团）有限公司 | Prefabricated hollow pier with unconnected inner steel bars |
| CN112609562A (en) * | 2020-11-18 | 2021-04-06 | 四川交投建设工程股份有限公司 | Assembled bridge substructure and construction method thereof |
| CN112709144A (en) * | 2020-12-25 | 2021-04-27 | 扬州市市政建设处 | Assembled special-shaped pier column and construction method |
| CN112853946A (en) * | 2021-03-18 | 2021-05-28 | 长安大学 | Grouting sleeve, grouting sleeve connected assembled pier and construction method thereof |
| CN113668361A (en) * | 2021-06-04 | 2021-11-19 | 武汉理工大学 | Fabricated concrete double-layer gate-type pier structure and construction method |
| CN113373800A (en) * | 2021-06-24 | 2021-09-10 | 上海应用技术大学 | Hollow prefabricated assembled pier adopting grouting sleeve and connecting method thereof |
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