CN109594467A - Precast pier and cushion cap connection structure, construction method, precast pier, cushion cap - Google Patents
Precast pier and cushion cap connection structure, construction method, precast pier, cushion cap Download PDFInfo
- Publication number
- CN109594467A CN109594467A CN201710937496.9A CN201710937496A CN109594467A CN 109594467 A CN109594467 A CN 109594467A CN 201710937496 A CN201710937496 A CN 201710937496A CN 109594467 A CN109594467 A CN 109594467A
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- China
- Prior art keywords
- pier
- cap
- precast
- steel tube
- embedded steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000010276 construction Methods 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 79
- 239000010959 steel Substances 0.000 claims abstract description 79
- 238000005266 casting Methods 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims description 4
- 230000015271 coagulation Effects 0.000 claims 5
- 238000005345 coagulation Methods 0.000 claims 5
- 239000002689 soil Substances 0.000 claims 5
- 210000003205 muscle Anatomy 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000009415 formwork Methods 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000010008 shearing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003032 molecular docking Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development 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
Abstract
The present invention relates to precast piers and cushion cap connection structure, construction method, precast pier, cushion cap；The connection structure of precast pier and pier cap includes precast pier and pier cap, precast pier includes bridge pier concrete structure and the embedded steel tube that is embedded in bridge pier concrete structure, pier cap includes cushion cap concrete structure, and the pre-buried plug socket for the embedded steel tube grafting is embedded in cushion cap concrete structure.When construction, precast pier is lifted on pier cap, embedded steel tube grafting is mounted on pre-buried plug socket；Later can at the plug connection of the two cast-in-place concrete wet joint, embedded steel tube is anchored in pier cap.The shear resistant capacity and rigidity of connection structure are big, connection integrity is good, the steel of consumption are less, the workload of site welding and formwork casting concrete can be effectively reduced, easy construction, convenient for promoting, there is apparent economic technology benefit compared with the connection structure on basis than traditional precast pier.
Description
Technical field
The present invention relates to the connection structure of a kind of precast pier and cushion cap, the construction method of the connection structure, in the connection
Precast pier and pier cap used in structure.
Background technique
With the rapid development of our country's economy, the sharp increase of urban population, the volume of traffic also rise with it, road energy
Power wretched insufficiency, building for urban elevated bridge also become a kind of measure for alleviating traffic pressure, these elevated projects are in addition to full
It except foot safety, durable basic demand, also needs to reduce the duration to the greatest extent, to reduce the influence to surrounding traffic, shortens city and hand over
Logical blocking time.Currently, the bridge pier structure of Urban Bridge generallys use cast-in-place construction, construction needs close traffic, in addition cast-in-place
Long construction period, construction quality is not easy to control, and the bracket, template consumptive material dosage in construction are big, and construction cost is high, directly affects and applies
The road passage capability of work point, it is incompatible with urban construction.
According to precast plant's precast pier is used, after precast pier on-site hoisting is in place, it is directly connected to it with cushion cap
Form of construction work, then can parallel construction, greatly shorten the construction period, reduce the interference to surrounding traffic, resident living, and bridge
The prefabricated contraction for reducing concrete of component, caused deformation of creeping, construction quality is guaranteed, and there are preferable societies, ring
Border and economic benefit.But the connection design on precast pier and basis is a big technological difficulties.
The connection of the precast pier and cushion cap of traditional approach is mainly by pre- at the top of cushion cap and the bottom of precast pier
Junction steel plate is buried, after the completion of the two docking, then upper and lower junction steel plate is welded into anchoring and is completed.This connection type is to structure
Handle too simple, the amount of the steel of consumption is larger, and the shearing resistance of connection structure, shock resistance are poor, seriously affects main structure
Durability and stress performance, there are security risks.
Summary of the invention
The purpose of the present invention is to provide the connection structures of a kind of precast pier and cushion cap, for solving existing connection structure
Existing shearing resistance, shock resistance difference problem；The object of the invention is also to provide a kind of construction method of connection structure,
Precast pier used in the connection structure, pier cap.
To achieve the above object, the scheme 1 of the connection structure of precast pier of the invention and pier cap is: precast pier
Connection structure with pier cap includes precast pier and pier cap, and precast pier includes bridge pier concrete structure and is embedded in
Embedded steel tube in bridge pier concrete structure, pier cap include cushion cap concrete structure, are embedded in cushion cap concrete structure
For the pre-buried plug socket of the embedded steel tube grafting.
Scheme 2 is connection structure according to scheme 1, and the cushion cap concrete structure, which is equipped with, supplies the prefabricated bridge
The slot bottom of installation groove is arranged in the installation groove of the lower end insertion installation of pier, the pre-buried plug socket；Precast pier passes through institute
It states embedded steel tube to be plugged on pre-buried plug socket, and precast pier and pier cap are by being cast in the installation groove
Concrete structure is fixedly connected.
Scheme 3 is, according to connection structure described in scheme 2, is equipped in the cushion cap concrete structure for described pre-
The madjack pipe that fill concrete is poured in steel pipe is buried, one end of madjack pipe is extend into from the bottom to top in the pre-buried plug socket, separately
Cushion cap concrete structure is stretched out in one end；Fill concrete has been poured in the embedded steel tube.
Scheme 4 is connection structure according to scheme 3, and the height of the fill concrete is higher than the embedded steel tube
With the highest point of the mating part of pre-buried plug socket.
Scheme 5 is the connection structure according to scheme 3 or 4, and the embedded steel tube is used for and the pre-buried plug socket
One end for plugging stretch out the bridge pier concrete structure, embedded steel tube runs through the bridge pier concrete structure.
Scheme 6 is, according to connection structure described in scheme 5, the outer wall of the extension of the embedded steel tube, which is equipped with, to be cut
Power nail.
Scheme 7 is, according to connection structure described in scheme 5, in the embedded steel tube in the bridge pier concrete structure
Outside is equipped with the bridge pier reinforcing rib for being parallel to the axis setting of embedded steel tube, and bridge pier concrete knot is stretched out in the lower end of bridge pier reinforcing rib
Structure.
Scheme 8 is the connection structure according to scheme 3 or 4, the pre-buried plug socket include horizontally disposed substrate and
The cylinder being vertically mounted on the top surface of the substrate, cylinder supply the embedded steel tube grafting.
Scheme 9 is, according to connection structure described in scheme 8, the inner wall of the cylinder is equipped with to be arranged radially along cylinder
Stiffening plate, stiffening plate have the spaced two or more of axis around the cylinder.
Scheme 10 is connection structure according to scheme 9, and the bottom surface of the substrate is equipped with peg.
The scheme 1 of precast pier of the invention is: precast pier includes bridge pier concrete structure, in bridge pier concrete structure
It is embedded with the embedded steel tube for carrying out plug connection with the pre-buried plug socket in pier cap.
Scheme 2 is precast pier according to scheme 1, and the embedded steel tube is used for and the pre-buried plug socket
The bridge pier concrete structure is stretched out in the one end plugged, and embedded steel tube runs through the bridge pier concrete structure.
Scheme 3 is, according to precast pier described in scheme 2, the outer wall of the extension of the embedded steel tube, which is equipped with, to be cut
Power nail.
Scheme 4 is precast pier according to scheme 3, in the embedded steel tube in the bridge pier concrete structure
Outside is equipped with the bridge pier reinforcing rib for being parallel to the axis setting of embedded steel tube, and bridge pier concrete knot is stretched out in the lower end of bridge pier reinforcing rib
Structure.
The scheme 1 of pier cap of the invention is: pier cap includes cushion cap concrete structure, in cushion cap concrete structure
It is embedded with the pre-buried plug socket for the embedded steel tube grafting in precast pier.
Scheme 2 is pier cap according to scheme 1, and the cushion cap concrete structure, which is equipped with, supplies the prefabricated bridge
The slot bottom of installation groove is arranged in the installation groove of the lower end insertion installation of pier, the pre-buried plug socket.
Scheme 3 is, according to pier cap described in scheme 2, is equipped in the cushion cap concrete structure for described pre-
The madjack pipe that fill concrete is poured in steel pipe is buried, one end of madjack pipe is extend into from the bottom to top in the pre-buried plug socket, separately
Cushion cap concrete structure is stretched out in one end.
Scheme 4 is pier cap according to scheme 3, and the pre-buried plug socket includes horizontally disposed substrate and hangs down
The cylinder being directly mounted on the top surface of the substrate, cylinder supply the embedded steel tube grafting, and substrate, which is equipped with, supplies the madjack pipe
The perforation passed through.
Scheme 5 is pier cap according to scheme 4, and the inner wall of the cylinder is equipped with to be arranged radially along cylinder
Stiffening plate, stiffening plate have the spaced two or more of axis around the cylinder.
Scheme 6 is, according to pier cap described in scheme 5, the bottom surface of the substrate is equipped with peg.
Precast pier of the invention and the scheme 1 of the construction method of pier cap connection structure are: including the following steps, walk
Rapid 1, the embedded steel tube grafting in precast pier is installed on the pre-buried plug socket in pier cap by hoisting prefabricated bridge pier；Step
Rapid 2, the outside casting concrete that part is plugged in embedded steel tube and pre-buried plug socket, pours backfill to the inside of embedded steel tube
Concrete.
The beneficial effects of the present invention are: embedded steel tube, pier cap are arranged in bridge pier concrete structure using precast pier
Cushion cap concrete structure in pre-buried plug socket is set；When construction, precast pier is lifted on pier cap, embedded steel tube is inserted
It connects and is mounted on pre-buried plug socket；Later can at the plug connection of the two cast-in-place concrete wet joint, embedded steel tube is anchored
In in pier cap；The shear resistant capacity and rigidity of connection structure are big, and connection integrity is good, can effectively reduce site welding with
And the workload of formwork casting concrete, it accelerates construction progress, has compared with the connection structure on basis than traditional precast pier
There is apparent economic technology benefit.
Further, the pressure for pouring fill concrete into the embedded steel tube is embedded in cushion cap concrete structure
Slurry pipe.After embedded steel tube is plugged on pre-buried plug socket, by madjack pipe to fill concrete is poured inside embedded steel tube, return
The height for filling out concrete is higher than the highest point of the embedded steel tube and the mating part of pre-buried plug socket；Further increase connection
The globality of structure improves the shearing resistance bearing strength of connection structure.
Further, one end stretching bridge pier plugged of the embedded steel tube being used for the pre-buried plug socket
Concrete structure, embedded steel tube run through the bridge pier concrete structure.The physical and mechanical property of steel and concrete is given full play to,
It can avoid weakness of both materials under the conditions of being respectively used alone again, there is good co-operation and mechanical property, drop
The weight of low precast pier, facilitates on-site hoisting.
Detailed description of the invention
Fig. 1 is that the embodiment 1 of the connection structure of precast pier and pier cap of the invention is installed in place in precast pier
Preceding structural schematic diagram；
Fig. 2 is the structural schematic diagram after precast pier is installed in place on pier cap；
Fig. 3 is the enlarged drawing at the A in Fig. 2；
Fig. 4 is the structural schematic diagram of the pre-buried plug socket in Fig. 2；
Fig. 5 is the enlarged drawing of the precast pier lower end in Fig. 2.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
The embodiment 1 of the connection structure of precast pier and pier cap of the invention, as shown in Figures 1 to 5, including it is prefabricated
Bridge pier 1, the bent cap 7 for being mounted on 1 top of precast pier and the pier cap 2 installed for precast pier 1.Precast pier 1 has side by side
Two be arranged are horizontally disposed in left-right direction on pier cap 2, and the top of pier cap 2 is equipped with left and right spaced two
The installation groove 14 of a lower end insertion installation for precast pier 1.
Precast pier 1 includes bridge pier concrete structure 15, is embedded with embedded steel tube 4 in bridge pier concrete structure 15；It is pre-buried
About 4 steel pipe runs through bridge pier concrete structure 15, and bridge pier concrete structure 15 is stretched out in the lower end of embedded steel tube 4；Embedded steel tube 4
The outer wall of extension is equipped with the WELDING STUDS 8 being arranged radially along embedded steel tube 4；WELDING STUDS 8 has circular 4 axis of embedded steel tube
More than the two rows of setting, each WELDING STUDS 8 in same shearing staple is arranged along 4 axially spaced-apart of embedded steel tube.
The bridge for being parallel to 4 axis of embedded steel tube and being arranged is additionally provided in bridge pier concrete structure 15 in the outside of embedded steel tube 4
Pier reinforcing rib 12, the lower end of bridge pier reinforcing rib 12 extend downwardly bridge pier concrete structure 15；More than there are two bridge pier reinforcing ribs 12,
Each bridge pier reinforcing rib 12 rectangular is alternatively arranged along the axis of embedded steel tube 4.
Pier cap 2 includes cushion cap concrete structure 16, and the top of cushion cap concrete structure 16 is arranged in installation groove 14；
The pre-buried plug socket 6 installed for 4 grafting of embedded steel tube is equipped in two installation grooves 14 in corresponding groove bottom；Such as Fig. 4, pre-buried grafting
Seat 6 includes horizontally disposed substrate 10 and the cylinder 13 for being vertically mounted on 10 top of substrate, the outer diameter and embedded steel tube 4 of cylinder 13
Internal diameter be adapted.
The inner wall of cylinder 13 is equipped with the stiffening plate 9 being arranged radially along cylinder 13, the side of the close substrate 10 of stiffening plate 9
It is fixedly connected with substrate 10；Stiffening plate 9 has four that the axis of circular cylinder 13 is arranged at equal intervals, and the bottom of substrate 10 is equipped with bolt
Nail 11, there are two more than, each peg 11 arranges peg 11 along the edge of substrate 10.
Madjack pipe 5 is also embedded in cushion cap concrete structure 16, substrate 10 is equipped with the perforation passed through for madjack pipe 5, pressure
One end of slurry pipe 5 from top to bottom passes through substrate 10, and the other end stretches out cushion cap concrete structure 16.Madjack pipe 5 is used in pre-buried steel
Pipe 4 to the inside of embedded steel tube 4 pours fill concrete after docking completion with cylinder 13.
Make the Specific construction technique of the connection structure of precast pier and pier cap are as follows: 1, the mixed combined hollow of pre-manufactured steel-
Precast pier 1；2, pier cap 2 is poured, pre-buried plug socket 6 is installed in corresponding installation groove 14；3, hoisting prefabricated bridge
Pier 1, two precast piers 1 are placed individually into corresponding installation groove 14, guarantee that embedded steel tube 4 is completely nested in cylinder 13；
4, precast pier 1 is fixed complete after into installation groove 14 casting concrete, poured back by madjack pipe 5 into embedded steel tube 4
Concrete is filled out, the height of fill concrete is higher than the highest point of embedded steel tube 4 and the mating part of pre-buried plug socket 6；It completes
The connection structure of precast pier 1 and pier cap 2.The technical process be also in the present invention precast pier knot is connect with pier cap
The embodiment of the construction method of structure.
Compared with the prior art, precast pier 1 is connect using cast-in-place concrete wet joint connection type with pier cap 2,
Embedded steel tube 4 and bridge pier reinforcing rib 12 are anchored in cushion cap, by pouring into installation groove 14 with the inside of embedded steel tube 4
Concrete makes connection structure become whole, and the shear resistant capacity and rigidity of connection structure are big, good integrity, construction method letter
Just, easily controllable, the workload of site welding and formwork casting concrete can be effectively reduced, is accelerated construction progress, than tradition
Precast pier compare with the connection structure on basis with apparent economic technology benefit.
In addition, precast pier uses steel pipe and the hollow pier shaft of Combined concrete, the physics of steel and concrete is given full play to
Mechanical property, and can avoid weakness of both materials under the conditions of being respectively used alone, there is good co-operation and power
Performance is learned, the stress performance of structure had both been improved and had alleviated the weight of prefabricated component, and be readily transported lifting and construction.
Embodiment 2, embodiment 2 and above-described embodiment 1 the difference is that, the embedded steel tube in bridge pier concrete structure
Connection-peg by being embedded in bridge pier concrete base is formed, and connection-peg is used to plug with the pre-buried plug socket in pier cap
Part be steel-tube construction, the steel-tube construction be equivalent to prefabricated bridge cross in embedded steel tube；When construction, precast pier passes through setting
Pre-buried plug socket plugs connection in the connection-peg and pier cap of its bottom.
The embodiment of precast pier of the invention, the structure of precast pier and the precast pier of aforementioned present invention are held with bridge pier
The structure of prerotation bridge pier in any embodiment of the connection structure of platform is identical, therefore, repeats no more.
The embodiment of pier cap of the invention, the structure of pier cap and the precast pier of aforementioned present invention are held with bridge pier
The structure of pier cap in any embodiment of the connection structure of platform is identical, therefore, repeats no more.
Claims (10)
1. the connection structure of precast pier and pier cap, including precast pier and pier cap, it is characterised in that: precast pier
Including bridge pier concrete structure and the embedded steel tube being embedded in bridge pier concrete structure, pier cap includes cushion cap concrete knot
Structure is embedded with the pre-buried plug socket for the embedded steel tube grafting in cushion cap concrete structure.
2. the connection structure of precast pier according to claim 1 and pier cap, it is characterised in that: the cushion cap coagulation
Installation groove of the soil structure equipped with the lower end insertion installation for the precast pier, the pre-buried plug socket setting are recessed in installation
The slot bottom of slot；Precast pier is plugged on pre-buried plug socket by the embedded steel tube, and precast pier and pier cap are logical
The concrete structure being cast in the installation groove is crossed to be fixedly connected.
3. the connection structure of precast pier according to claim 2 and pier cap, it is characterised in that: the cushion cap coagulation
The madjack pipe for pouring fill concrete into the embedded steel tube is equipped in soil structure, one end of madjack pipe is stretched from the bottom to top
Enter into the pre-buried plug socket, the other end stretches out cushion cap concrete structure；Fill concrete has been poured in the embedded steel tube.
4. the connection structure of precast pier according to claim 3 and pier cap, it is characterised in that: the backfill coagulation
The height of soil is higher than the highest point of the embedded steel tube and the mating part of pre-buried plug socket.
5. the connection structure of precast pier according to claim 3 or 4 and pier cap, it is characterised in that: described pre-buried
Steel pipe stretches out the bridge pier concrete structure for one end plugged with the pre-buried plug socket, and embedded steel tube runs through institute
State bridge pier concrete structure.
6. the connection structure of precast pier according to claim 5 and pier cap, it is characterised in that: the bridge pier coagulation
The bridge pier reinforcing rib for being parallel to the axis of embedded steel tube and being arranged is equipped in soil structure in the outside of the embedded steel tube, bridge pier is reinforced
Bridge pier concrete structure is stretched out in the lower end of muscle.
7. the connection structure of precast pier according to claim 3 or 4 and pier cap, it is characterised in that: described pre-buried
Plug socket includes horizontally disposed substrate and the cylinder that is vertically mounted on the top surface of the substrate, and cylinder supplies the embedded steel tube
Grafting.
8. precast pier, it is characterised in that: precast pier is the described in any item precast piers of the claims 1 to 7 and bridge
Precast pier in the connection structure of pier cushion cap.
9. pier cap, it is characterised in that: pier cap is the described in any item precast piers of the claims 1 to 7 and bridge
Pier cap in the connection structure of pier cushion cap.
10. the construction method of precast pier and pier cap connection structure, it is characterised in that: include the following steps, step 1 is hung
Precast pier is filled, the embedded steel tube grafting in precast pier is installed on the pre-buried plug socket in pier cap；Step 2,
Embedded steel tube and pre-buried plug socket plug the outside casting concrete of part, pour backfill coagulation to the inside of embedded steel tube
Soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710937496.9A CN109594467A (en) | 2017-09-30 | 2017-09-30 | Precast pier and cushion cap connection structure, construction method, precast pier, cushion cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710937496.9A CN109594467A (en) | 2017-09-30 | 2017-09-30 | Precast pier and cushion cap connection structure, construction method, precast pier, cushion cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109594467A true CN109594467A (en) | 2019-04-09 |
Family
ID=65956640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710937496.9A Pending CN109594467A (en) | 2017-09-30 | 2017-09-30 | Precast pier and cushion cap connection structure, construction method, precast pier, cushion cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109594467A (en) |
Cited By (3)
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| CN113106843A (en) * | 2020-01-10 | 2021-07-13 | 中国国家铁路集团有限公司 | Combined embedded connection structure between prefabricated pier stud and base and construction method |
| CN113123220A (en) * | 2020-01-10 | 2021-07-16 | 中国国家铁路集团有限公司 | Rapid connecting structure between prefabricated pier stud and base and construction method |
| CN114263093A (en) * | 2022-01-22 | 2022-04-01 | 郑州大学 | Fully-prefabricated assembled bridge and construction method |
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Cited By (3)
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| CN113106843A (en) * | 2020-01-10 | 2021-07-13 | 中国国家铁路集团有限公司 | Combined embedded connection structure between prefabricated pier stud and base and construction method |
| CN113123220A (en) * | 2020-01-10 | 2021-07-16 | 中国国家铁路集团有限公司 | Rapid connecting structure between prefabricated pier stud and base and construction method |
| CN114263093A (en) * | 2022-01-22 | 2022-04-01 | 郑州大学 | Fully-prefabricated assembled bridge and construction method |
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