CN107447647A - Assembled bridge pier and its construction method - Google Patents
Assembled bridge pier and its construction method Download PDFInfo
- Publication number
- CN107447647A CN107447647A CN201710612317.4A CN201710612317A CN107447647A CN 107447647 A CN107447647 A CN 107447647A CN 201710612317 A CN201710612317 A CN 201710612317A CN 107447647 A CN107447647 A CN 107447647A
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- China
- Prior art keywords
- pile foundation
- pier
- bellows
- reinforcing bar
- precast
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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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of assembled bridge pier, including pile foundation, Precast Pier Columns and prefabricated bent cap, wherein, the top of pile foundation is reserved with reinforcing bar, the bottom of Precast Pier Columns is reserved with grout sleeve, and the reinforcing bar of pile foundation is contained in grout sleeve and grouting material is perfused with grout sleeve, and the top of Precast Pier Columns is reserved with reinforcing bar, prefabricated bent cap is provided with bellows, and the reinforcing bar of Precast Pier Columns is contained in bellows and is perfused with concrete in bellows.Assembled bridge pier proposed by the present invention, its stress performance is good, and speed of application is fast, the cycle is short and technique is simple.
Description
Technical field
The present invention relates to technical field of bridge engineering, more particularly to a kind of assembled bridge pier and its construction method.
Background technology
The bridge pier of bridge is the supporting construction of spanning, wherein cushion cap of the columnar pier typically on the basis of, pillar pier shaft and
Bent cap forms.Advantage is to mitigate pier shaft deadweight, saves masonry material, better appearance, rigidity and intensity are all larger, are there is drift
It can be used in the river of thing and floating ice.
Currently, Bridges in Our Country is constructed, and especially Bridge Pier Construction substantially uses cast-in-situ construction method mostly.Cast-in-situ construction
Skill falls behind, and long construction period, process are cumbersome, cause traffic congestion, environmental pollution, it is difficult to meet today's society rapid economic development
Demand.And corresponding fabricated construction, can be prefabricated in the factory each component in advance, directly assembled after transporting to scene, exempt
The processes such as formwork, cast concrete, maintenance.Substantially reduce the site operation cycle, reduce place occupancy, while batch production is pre-
System causes construction quality to be easily controlled, and climate limitation is smaller.Remake old bridge, reinforcing especially in heavy traffic section, can
To substantially reduce the influence to traffic.Assembled bridge pier is using the connection of pier stud and cushion cap at present, and its resistance to overturning is not
It is high.
The content of the invention
It is a primary object of the present invention to provide a kind of assembled bridge pier and its construction method, it is intended to improve its stress
Energy.
To achieve the above object, the present invention provides a kind of assembled bridge pier, including pile foundation, Precast Pier Columns and preform lid
Beam, wherein,
The top of the pile foundation is reserved with reinforcing bar, and the bottom of the Precast Pier Columns is reserved with grout sleeve, and the reinforcing bar of pile foundation accommodates
It is perfused with grouting material in grout sleeve and in grout sleeve, the tops of the Precast Pier Columns is reserved with reinforcing bar, on prefabricated bent cap
Provided with bellows, the reinforcing bar of the Precast Pier Columns is contained in bellows and is perfused with concrete in bellows.
Preferably, the concrete layer for leveling is poured between the Precast Pier Columns and prefabricated bent cap.
Preferably, the thickness of the concrete layer is 45mm-60mm.
Preferably, the grout sleeve and bellows are provided with multiple, and the pile foundation and Precast Pier Columns are provided with more
Root reinforcing bar, the reinforcing bar are corresponded with grout sleeve or bellows and set.
Preferably, multiple grout sleeves are uniformly distributed in the circumference of Precast Pier Columns, week of multiple bellowss in prefabricated bent cap
To being uniformly distributed.
Preferably, the number of the grout sleeve and bellows is equal.
Preferably, reserved steel bar extension elongation is 0.1m-0.3m in the pile foundation, and reserved steel bar is stretched in the Precast Pier Columns
It is 0.9m-1.1m to go out length.
Present invention further propose that a kind of construction method based on above-mentioned assembled bridge pier, comprises the following steps：
The prefabricated making of pier stud and bent cap is carried out, and in-site pouring concrete forms pile foundation, and the reserved steel bar at the top of pile foundation
Or its reinforcing bar is stretched out；
Precast Pier Columns are installed in handling after pile foundation reaches concrete load age, and the grout sleeve of Precast Pier Columns is inserted in into pile foundation
The reinforcing bar of stretching is starched so that pier stud is positioned into perfusion perfusion in backward grout sleeve；
When Precast Pier Columns and pile foundation bonding strength reach design requirement, prefabricated bent cap is installed in handling, and is irrigated into bellows
Concrete.
Assembled bridge pier proposed by the present invention has the advantages that：
1st, this assembled bridge pier need not set the devices such as the installation island in existing interconnection technique, can accelerate speed of application, in addition
This assembled bridge pier is directly connected with foundation pile, and its resistance to overturning is also better than existing interconnection technique；
2nd, pier stud and pile foundation connection stress is reliable, bridge pier positioning is simple, easy for construction, simple to operate, easily controllable, can effectively subtract
Small Site Welding and the workload of concreting, accelerating construction progress；
3rd, speed of application is fast.Assembled can realize batch production, mass production, and scene only needs to install prefabricated components,
Reduce live formwork, prick the cumbersome process such as muscle, maintenance, form removal；
4th, construction quality is easy to control.In the present invention, each component shape is relatively regular, along be in precast plant industrialize make.
Therefore, prefabricated to in-site installation construction from pier stud, bent cap, quality is easy to ensure and whole-process control；
5th, overall performance is good.In the present invention, the splicing between pile foundation, Precast Pier Columns and prefabricated bent cap has reinforcing bar phase lap
Connect, irrigate the cement mortar of high intensity afterwards so that each component has good switching performance, participates in stress jointly；
6th, it is suitable for city remake old bridge.Remake old bridge especially in heavy traffic section, enlarging, due to speed of application is fast,
Occupied ground is small, noise is small etc., can substantially reduce the interference to urban transportation, quickly resume traffic；
7th, 53mm thickness concrete layers are poured between bent cap and pier stud, not only facilitate installation positioning and beneficial to ensure installation plane requirement but also
It ensure that the stability of the two connection；
8th, Precast Pier Columns and pile foundation, bent cap connecting portion reinforcing bar reduce scene using grout sleeve and bellows grouting connection
The quality unstability of welding.
Brief description of the drawings
Fig. 1 is the structural representation of assembled bridge pier of the present invention；
Fig. 2 is the partial structural diagram that assembled bridge pier pile foundation of the present invention is connected with Precast Pier Columns；
Fig. 3 is the cross section structure diagram of Precast Pier Columns in assembled bridge pier of the present invention；
Fig. 4 is the cross section structure diagram of prefabricated bent cap in assembled bridge pier of the present invention；
In figure, 1-pile foundation, 2-Precast Pier Columns, 3-prefabricated bent cap, 4-grout sleeve, 5-bellows, 6-stirrup.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
It should be noted that in the description of the invention, term " transverse direction ", " longitudinal direction ", " on ", " under ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown, it is for only for ease of the description present invention and simplifies description, is not instruction or implies signified dress
Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the invention
System.
Referring to figs. 1 to Fig. 4, in this preferred embodiment, a kind of assembled bridge pier, including pile foundation 1, Precast Pier Columns 2 and pre-
Bent cap 3 processed, wherein,
The top of pile foundation 1 is reserved with reinforcing bar（Diameter 36mm, extension elongation about 0.24m）, the bottom of Precast Pier Columns 2 is reserved with grouting
Sleeve 4（Diameter 85mm）, the reinforcing bar of pile foundation 1 is contained in grout sleeve 4 and grouting material, prefabricated pier is perfused with grout sleeve 4
The top of post 2 is reserved with reinforcing bar（Diameter 36mm, extension elongation about 1.0m）, prefabricated bent cap 3 is provided with bellows 5（It is a diameter of
100mm）, the reinforcing bars of Precast Pier Columns 2 is contained in bellows 5 and is perfused with concrete in bellows 5（High performance concrete）.
Specifically, 150mm is reserved on the top of bellows 5,75mm is reserved in bottom.Pile foundation 1 is diameter 1400mm solid coagulation
Soil.Precast Pier Columns 2 are diameter 1200mm solid cylinder concrete structure, and prefabricated bent cap 3 is solid concrete structure.In order to full
Foot splicing demand, some key components need to carry out special cloth muscle design, as Precast Pier Columns 2 and prefabricated bent cap 3 are respectively provided with
There is a circle stirrup 6.
Further, the concrete layer for leveling is poured between Precast Pier Columns 2 and prefabricated bent cap 3.Specifically, coagulation
The thickness of the layer is 45mm-60mm（It is thick for 53mm in the present embodiment）.
Further, grout sleeve 4 and bellows 5 are provided with multiple, and pile foundation 1 and Precast Pier Columns 2 are provided with more
Reinforcing bar, reinforcing bar is corresponded with grout sleeve 4 or bellows 5 and set, so as to further increase the structure of this assembled bridge pier
Stabilized soil pavement.
Further, multiple grout sleeves 4 are uniformly distributed in the circumference of Precast Pier Columns 2, and multiple bellowss 5 are in prefabricated bent cap
3 circumference is uniformly distributed, so as to further increase the structural stability of this assembled bridge pier.
Grout sleeve 4 is equal with the number of bellows 5, is 20 in the present embodiment.
Further, reserved steel bar extension elongation is 0.1m-0.3m in pile foundation 1, and reserved steel bar stretches out length in Precast Pier Columns 2
Spend for 0.9m-1.1m.
Procedure below is specifically used in construction this assembled bridge pier.
1st, pier stud is prefabricated.It is first according to require assembling reinforcement, the pre-buried grout sleeve 4 of pier shaft bottom, it should be ensured that its spacing
Consistent and with pile foundation stretching reinforcing bar corresponds, and after treating reinforcing bar colligation, lifting reinforcing bar net cage is into punching block.Pour into a mould pier stud
Concrete, and fully vibrate to ensure the density of concrete.Heating curing is carried out to concrete using steam.Steam curing must
It uniformly, otherwise must may change the contiguity matching precision of pier stud.Component is stripped.It should handle with care, avoid in handling process
Side, the angle of damaged in collision component, influence assembly.Pay attention to the intact of the reserved steel bar of guarantee, must not bend or block.
2nd, bent cap is prefabricated.Bent cap is similar to pier stud making when factory makes.The pre-buried bellows 5 of bent cap, it should be ensured that therebetween
Away from consistent and corresponded with the stretching reinforcing bar at the top of pier stud.Heating curing is carried out to concrete using steam.Steam curing must
It uniformly, otherwise must may change the contiguity matching precision of bent cap.Component is stripped, stacked according to the rules.
3rd, component conveying and lifting.Prefabricated components concrete strength can not carry component, institute before being not up to its standard value 75%
There is component to be transported using the iant flat truck of 1000 tons of loading capacity.Consider the factors such as site environment, hoisting height, lift
Hung using 300 tons of crane units.
4th, site operation.After the completion of live pile foundation construction, transport Precast Pier Columns 2 to scene, hoisting prefabricated pier stud 2 is simultaneously pressed
The installation of stake position, stake top reinforcing bar are stretched in grout sleeve 4, and pier stud irrigates grouting liquid afterwards in place.
5th, bent cap is installed.Prefabricated bent cap 3 is transported to scene and lifted, prefabricated bent cap 3 pre-buried bellows 5 and pier stud
Stretching reinforcing bar alignment, transfer prefabricated bent cap 3 make reinforcing bar enter bellows 5 in.After installation is in place, first in prefabricated bent cap 3 and in advance
2 casting concrete layers of pier stud processed pour high performance concrete into bellows again, it is linked to be entirety.
Assembled bridge pier proposed by the present invention has the advantages that：
1st, this assembled bridge pier need not set the devices such as the installation island in existing interconnection technique, can accelerate speed of application, in addition
This assembled bridge pier is directly connected with foundation pile, and its resistance to overturning is also better than existing interconnection technique；
2nd, pier stud and pile foundation 1 connect that stress is reliable, bridge pier positioning is simple, easy for construction, simple to operate, easily controllable, can be effective
Reduce the workload of Site Welding and concreting, accelerating construction progress；
3rd, speed of application is fast.Assembled can realize batch production, mass production, and scene only needs to install prefabricated components,
Reduce live formwork, prick the cumbersome process such as muscle, maintenance, form removal；
4th, construction quality is easy to control.In the present invention, each component shape is relatively regular, along be in precast plant industrialize make.
Therefore, prefabricated to in-site installation construction from pier stud, bent cap, quality is easy to ensure and whole-process control；
5th, overall performance is good.In the present invention, the splicing between pile foundation 1, Precast Pier Columns 2 and prefabricated bent cap 3 has reinforcing bar phase
Mutually overlap joint, the cement mortar of high intensity is irrigated afterwards so that each component has good switching performance, participates in stress jointly；
6th, it is suitable for city remake old bridge.Remake old bridge especially in heavy traffic section, enlarging, due to speed of application is fast,
Occupied ground is small, noise is small etc., can substantially reduce the interference to urban transportation, quickly resume traffic；
7th, 53mm thickness concrete layers are poured between bent cap and pier stud, not only facilitate installation positioning and beneficial to ensure installation plane requirement but also
It ensure that the stability of the two connection；
8th, Precast Pier Columns 2 and pile foundation 1, bent cap connecting portion reinforcing bar are reduced using grout sleeve 4 and the grouting connection of bellows 5
The quality unstability of Site Welding.
A kind of present invention further propose that construction method of assembled bridge pier.
In this preferred embodiment, a kind of construction method based on above-mentioned assembled bridge pier, comprise the following steps：
The prefabricated making of pier stud and bent cap is carried out, and in-site pouring concrete forms pile foundation, and the reserved steel bar at the top of pile foundation
Or its reinforcing bar is stretched out；
Precast Pier Columns are installed in handling after pile foundation reaches concrete load age, and the grout sleeve of Precast Pier Columns is inserted in into pile foundation
The reinforcing bar of stretching is starched so that pier stud is positioned into perfusion perfusion in backward grout sleeve；
When Precast Pier Columns and pile foundation bonding strength reach design requirement, prefabricated bent cap is installed in handling, and is irrigated into bellows
Concrete.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure transformation that bright specification and accompanying drawing content are made, or other related technical areas are directly or indirectly used in,
Similarly it is included within the scope of the present invention.
Claims (8)
- A kind of 1. assembled bridge pier, it is characterised in that including pile foundation, Precast Pier Columns and prefabricated bent cap, wherein,The top of the pile foundation is reserved with reinforcing bar, and the bottom of the Precast Pier Columns is reserved with grout sleeve, and the reinforcing bar of pile foundation accommodates It is perfused with grouting material in grout sleeve and in grout sleeve, the tops of the Precast Pier Columns is reserved with reinforcing bar, on prefabricated bent cap Provided with bellows, the reinforcing bar of the Precast Pier Columns is contained in bellows and is perfused with concrete in bellows.
- 2. assembled bridge pier as claimed in claim 1, it is characterised in that poured between the Precast Pier Columns and prefabricated bent cap Concrete layer for leveling.
- 3. assembled bridge pier as claimed in claim 2, it is characterised in that the thickness of the concrete layer is 45mm-60mm.
- 4. assembled bridge pier as claimed in claim 1, it is characterised in that the grout sleeve and bellows are provided with more Individual, the pile foundation and Precast Pier Columns are provided with more reinforcing bars, and the reinforcing bar is corresponded with grout sleeve or bellows and set.
- 5. assembled bridge pier as claimed in claim 4, it is characterised in that multiple grout sleeves are in the circumferential uniform of Precast Pier Columns Distribution, multiple bellowss are uniformly distributed in the circumference of prefabricated bent cap.
- 6. assembled bridge pier as claimed in claim 4, it is characterised in that the number of the grout sleeve and bellows is equal.
- 7. the assembled bridge pier as described in any one in claim 1 to 6, it is characterised in that reserved steel bar in the pile foundation Extension elongation is 0.1m-0.3m, and reserved steel bar extension elongation is 0.9m-1.1m in the Precast Pier Columns.
- 8. a kind of construction method of the assembled bridge pier based on described in claim 1, it is characterised in that comprise the following steps：The prefabricated making of pier stud and bent cap is carried out, and in-site pouring concrete forms pile foundation, and the reserved steel bar at the top of pile foundation Or its reinforcing bar is stretched out；Precast Pier Columns are installed in handling after pile foundation reaches concrete load age, and the grout sleeve of Precast Pier Columns is inserted in into pile foundation The reinforcing bar of stretching is starched so that pier stud is positioned into perfusion perfusion in backward grout sleeve；When Precast Pier Columns and pile foundation bonding strength reach design requirement, prefabricated bent cap is installed in handling, and is irrigated into bellows Concrete.
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| CN201710612317.4A CN107447647A (en) | 2017-07-25 | 2017-07-25 | Assembled bridge pier and its construction method |
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| CN108532621A (en) * | 2018-04-19 | 2018-09-14 | 浙江大学城市学院 | A kind of assembled drilledpier foundation and its construction method |
| CN108547216A (en) * | 2018-06-12 | 2018-09-18 | 北京市市政工程设计研究总院有限公司 | Bridge prefabrication performance of concrete column confined and bridge foundation alligator bell and spigot frame and construction method |
| CN108560544A (en) * | 2018-06-22 | 2018-09-21 | 湘潭大学 | A kind of sleeve connection assembled pile foundation and its construction method |
| CN108677731A (en) * | 2018-06-19 | 2018-10-19 | 上海应用技术大学 | A kind of the rotary splicing structure and joining method of bent cap and bridge pier |
| CN108755730A (en) * | 2018-06-12 | 2018-11-06 | 中交第三航务工程勘察设计院有限公司 | A kind of assembled pile foundation wharfs node and its construction method |
| CN108756933A (en) * | 2018-04-27 | 2018-11-06 | 同济大学 | A kind of bellows-type quick connecting method of double layer tunnel inside prefabricated components |
| CN108774947A (en) * | 2018-08-01 | 2018-11-09 | 宁波交通工程建设集团有限公司 | Packaged type bridges pier stud super high strength concrete connection structure and construction method |
| CN108867323A (en) * | 2018-08-01 | 2018-11-23 | 中铁四局集团有限公司 | A kind of grout sleeve connection Precast Concrete Segmental Bridges pier construction method |
| CN109457599A (en) * | 2018-11-29 | 2019-03-12 | 福州大学 | Hollow pier and cushion cap splicing construction and construction method |
| CN109537465A (en) * | 2018-12-11 | 2019-03-29 | 中交公局土木工程建筑研究院有限公司 | A kind of assembled cushion cap pier stud joint model and the cementation of fissures construction technology using it |
| CN109989346A (en) * | 2019-01-10 | 2019-07-09 | 中交第二航务工程局有限公司 | Bridge major diameter precast concrete tubular column basis and its construction method |
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| WO2020001156A1 (en) * | 2018-06-29 | 2020-01-02 | 比亚迪股份有限公司 | Bridge and bridge pier thereof |
| CN110725475A (en) * | 2019-11-20 | 2020-01-24 | 中国建筑标准设计研究院有限公司 | Prefabricated column with built-in high-corrugated pipe, frame structure of prefabricated column and construction method of prefabricated column |
| CN110804944A (en) * | 2019-11-26 | 2020-02-18 | 北京工业大学 | Pier column-bent cap node pouring connection mode and structure in prefabricated assembled bridge in high-intensity area |
| CN111691310A (en) * | 2020-07-07 | 2020-09-22 | 郑琼华 | Bridge construction method |
| CN111996906A (en) * | 2020-09-21 | 2020-11-27 | 山东鲁桥建设有限公司 | Efficient construction method of assembled pier |
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| CN108532621A (en) * | 2018-04-19 | 2018-09-14 | 浙江大学城市学院 | A kind of assembled drilledpier foundation and its construction method |
| CN108756933A (en) * | 2018-04-27 | 2018-11-06 | 同济大学 | A kind of bellows-type quick connecting method of double layer tunnel inside prefabricated components |
| CN108547216A (en) * | 2018-06-12 | 2018-09-18 | 北京市市政工程设计研究总院有限公司 | Bridge prefabrication performance of concrete column confined and bridge foundation alligator bell and spigot frame and construction method |
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| CN108677731A (en) * | 2018-06-19 | 2018-10-19 | 上海应用技术大学 | A kind of the rotary splicing structure and joining method of bent cap and bridge pier |
| CN108560544B (en) * | 2018-06-22 | 2024-01-26 | 湘潭大学 | Sleeve connection assembled pile foundation and construction method thereof |
| CN108560544A (en) * | 2018-06-22 | 2018-09-21 | 湘潭大学 | A kind of sleeve connection assembled pile foundation and its construction method |
| WO2020001156A1 (en) * | 2018-06-29 | 2020-01-02 | 比亚迪股份有限公司 | Bridge and bridge pier thereof |
| CN110656575A (en) * | 2018-06-29 | 2020-01-07 | 比亚迪股份有限公司 | Bridge and pier thereof |
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