CN109162199A - Assembling-type precast pier connection structure and its construction method - Google Patents
Assembling-type precast pier connection structure and its construction method Download PDFInfo
- Publication number
- CN109162199A CN109162199A CN201811240404.2A CN201811240404A CN109162199A CN 109162199 A CN109162199 A CN 109162199A CN 201811240404 A CN201811240404 A CN 201811240404A CN 109162199 A CN109162199 A CN 109162199A
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- Prior art keywords
- prefabricated subsection
- connection structure
- slip casting
- uhpc
- tenon
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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
A kind of assembling-type precast pier connection structure and its construction method, connection structure are the component for connecting each prefabricated subsection of precast assembly bridge pier；Prefabricated subsection both ends are equipped with wet seam cavity, and inside is equipped with several slip casting channels of the connection wet seam cavity in both ends；Connection structure includes upper prefabricated subsection, lower prefabricated subsection and UHPC tenon, the wet seam cavity of upper and lower prefabricated subsection and slip casting channel are enclosed for pouring the chamber to form UHPC tenon, steel reinforcement cage is provided in the UHPC tenon, the both ends of steel reinforcement cage are located in the slip casting channel of upper and lower prefabricated subsection.The invention also includes the construction methods that precast assembly bridge pier is carried out using the connection structure, technical solution of the present invention not only increases resistance to compression and the pull resistance of precast pier segment junction, and the stress, simple structure, short construction period and the anti-seismic performance that improve bridge pier entirety are strong.
Description
Technical field
The invention belongs to science of bridge building fields, and in particular to a kind of assembling-type precast pier connection structure and its construction party
Method.
Background technique
With flourishing for Bridges in Our Country construction, the construction environment of bridge is increasingly by the attention of various circles of society, especially
It is the bridge in urban construction.Section assembling bridge pier has short time limit, Ke Yi relative to traditional cast-in-place concrete bridge
Precasting yard prefabricated components are interfered the advantages that few by ambient outside.The wherein intersegmental connection type of precast assembly bridge pier and connection
Quality directly influences the stress performance and anti-seismic performance of bridge pier entirety.Therefore, reliable and simplicity segment connection type is pre-
Make the key of assembled bridge pier application.Existing precast assembly bridge pier segment connection type is also less, and specific embodiment is more
Cumbersome, quality of connection is difficult to be guaranteed.
CN107675610A discloses the construction and the practice of a kind of connection of precast assembly bridge pier segment, by by very-high performance
Concrete UHPC is applied between precast pier segment, using the resistance to compression and tensile property of ultra-high performance concrete UHPC, with solution
The certainly weak problem of precast pier segment connection.But it realizes the connection of prefabricated subsection using cast-in-place UHPC connector, adopts
Although being obtained with the resistance to compression of the connecting structure of the precast assembly bridge pier segment and practice precast pier segment junction and tensile property
Enhancing is arrived, but its construction is complicated, long construction period, and the Stress distribution of junction is uneven, the whole stress of bridge pier
It is poor with anti-seismic performance.
Summary of the invention
The technical problem to be solved by the present invention is overcoming the deficiencies of the prior art and provide a kind of assembling-type precast pier company
Binding structure and its construction method can substantially reduce on-site construction time, reduce interference of the construction to surrounding traffic, structure stress
Stable and reliable for performance, anti-seismic performance is strong.
The technical solution adopted by the present invention to solve the technical problems is: a kind of assembling-type precast pier connection structure, should
Connection structure is the component for connecting each prefabricated subsection of precast assembly bridge pier；The prefabricated subsection both ends are equipped with wet seam cavity
13, inside is equipped with several slip casting channels 1 of the connection wet seam cavity 3 in both ends；The connection structure include upper prefabricated subsection 2, under
Prefabricated subsection 7 and UHPC tenon 3, the wet seam cavity 13 of prefabricated subsection and the slip casting channel 1 up and down are enclosed for pouring shape
At the chamber of UHPC tenon 3, steel reinforcement cage 12 is provided in the UHPC tenon 3, the both ends of the steel reinforcement cage 12 are located at prefabricated up and down
In the slip casting channel 1 of segment.Preferably, the rounded gear-like of the cavity.
Further, the UHPC tenon 3 is to pour HESUHPC(ungauged regions rapid hardening early strong UHPC) it forms.
Further, several plant slots 6 and vertical muscle are equipped at the top of the prefabricated subsection, the vertical muscle stretches out prefabricated subsection pier bottom
Part is anchorage inserted bar 4.
Further, the vertical muscle and plant 6 interlaced arrangement of slot.
Further, several pre-buried connection reinforcing bars 8 and interface reinforcing bar 9 are disposed in the cavity 13.
Beneficial effects of the present invention: the present invention connect the pre- of prefabricated subsection with reinforcing bar straight cutting combined type using cast-in-place UHPC tenon
Assembled bridge pier is made, resistance to compression and pull resistance, simple structure, the short construction period of precast pier segment junction is enhanced, passes through note
The steel reinforcement cage of certain length is arranged in slurry channel in UHPC tenon, and the slip casting that the both ends of steel reinforcement cage are located at upper and lower prefabricated subsection is logical
In road, the ratio of reinforcement of seam crossing is not only increased, also improves the bridge pier entirety ratio of reinforcement, and makes prefabricated subsection junction up and down
Stress distribution it is uniform, improve anti-seismic performance, while ensure that the holistic resistant behavior of structure is reliable and stable.
Detailed description of the invention
Fig. 1 is the vertical section structure schematic diagram of single prefabricated subsection in the present invention；
Fig. 2 is upper and lower prefabricated subsection connection type vertical section structure schematic diagram in the present invention；
Fig. 3 is B-B cross section structure schematic diagram in Fig. 2 of the present invention；
The cast-in-place UHPC tenon cross section structure schematic diagram of Fig. 4 present invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments.
Referring to Fig.1 ~ 4, a kind of assembling-type precast pier connection structure and its construction method, the connection structure are pre- for connecting
Make each prefabricated subsection of assembled bridge pier；The plant slot 6 and vertical muscle that the top of prefabricated subsection is equipped with several interlaced arrangements are (in the present embodiment
It is not drawn into), indulging muscle to stretch out prefabricated subsection pier bottom part is anchorage inserted bar 4, and prefabricated subsection both ends are equipped with wet seam cavity 13.It is preferred that
, the rounded gear-like of cavity 13 is arranged in prefabricated subsection both ends kernel of section.
Several pre-buried connection reinforcing bars 8 and interface reinforcing bar 9 are disposed in cavity 13, bottom is equipped with 4 slip casting channels 1；Connection
Structure includes upper prefabricated subsection 2, lower prefabricated subsection 7, UHPC tenon 3, the wet seam cavity 13 of upper and lower prefabricated subsection and slip casting channel
1 encloses for pouring the chamber to form UHPC tenon 3, and steel reinforcement cage 12 is arranged in UHPC tenon 3 by slip casting channel, steel reinforcement cage 12
Both ends are located in the slip casting channel 1 of upper and lower prefabricated subsection.By being respectively arranged pre-buried connection in 13 inherent laws of cavity
Reinforcing bar 8 and interface reinforcing bar 9 can further enhance the cohesive force of cast-in-place UHPC tenon 3 and normal concrete inside prefabricated subsection.
The making step of prefabricated subsection:
1) first in the reserved plant slot 6 in the top of prefabricated subsection, and vertical muscle is set, slot 6 and vertical muscle interlaced arrangement are planted, by vertical muscle
Prefabricated subsection pier bottom part is stretched out as anchorage inserted bar 4；
2) wet seam cavity 13 is hollowed out out at the kernel of section of prefabricated subsection both ends, several pre-buried connection reinforcing bars of arrangement in cavity 13
8 and interface reinforcing bar 9, the slip casting channel 1 of logical both ends cavity 13 is set in prefabricated subsection.
The site operation detailed process of precast pier:
After first upper prefabricated subsection 2 is sling, one layer of epoxy glue is smeared to upper and lower prefabricated subsection connection contact position 5, it is prefabricated still further below
A certain amount of HESUHPC grouting material 11 of injection in the plant slot 6 of segment 7, later, all by the anchorage inserted bar 4 of upper prefabricated subsection
It is inserted into the plant slot 6 of lower prefabricated subsection 7, until the HESUHPC grouting material 11 planted in slot 6 overflows just, with iron sheet package pair
Upper and lower prefabricated subsection cavity seam crossing is sealed processing, and steel reinforcement cage 12, steel reinforcement cage are arranged into UHPC tenon by slip casting channel 1
12 both ends are located at the slip casting channel 1 of upper and lower prefabricated subsection, inject HESUHPC by the slip casting channel 1 of upper prefabricated subsection 2
(ungauged regions rapid hardening early strong UHPC) 10 forms cast-in-place UHPC tenon 3 until overflowing slip casting channel 1 after filling up, repeat above-mentioned step
Suddenly the assembly of entire precast pier is completed.Preferably, iron sheet package can be used in encapsulation process.
The working principle of the invention: arranging the steel reinforcement cage of certain length by slip casting channel in UHPC tenon, steel reinforcement cage
Both ends are located in the slip casting channel of upper and lower prefabricated subsection, not only increase the ratio of reinforcement of seam crossing, it is whole to also improve bridge pier
The body ratio of reinforcement, and make the Stress distribution of upper and lower prefabricated subsection junction uniform, anti-seismic performance is improved, ensure that simultaneously
The holistic resistant behavior of structure is reliable and stable.Since HESUHPC grouting material can reach higher-strength in a short time, by anchor
Gu having formd between prefabricated subsection and being reliably connected to, without waiting for cast-in-place after surrounding plant slot connection is inserted into bar planting
The final age of UHPC tenon can continue next stage of constructing, and be very beneficial for practice of construction use.In addition, being compared to routine
The early strong UHPC of UHPC, HESUHPC(ungauged regions rapid hardening) it is not necessarily to steam curing, room temperature is sprinkled water epiphragma maintenance, and after conserving 1 day
Compression strength can reach 40Mpa, and compression strength can reach 70Mpa after maintenance 3 days, substantially increases construction efficiency, shortens
Construction period.
Claims (9)
1. a kind of assembling-type precast pier connection structure, which is characterized in that the connection structure is for connecting precast assembly bridge pier
The component of each prefabricated subsection；The prefabricated subsection both ends are equipped with wet seam cavity (13), and it is empty that inside is equipped with the wet seam in connection both ends
Several slip casting channels (1) of chamber (3)；The connection structure includes upper prefabricated subsection (2), lower prefabricated subsection (7) and UHPC tenon
(3), the wet seam cavity (13) of prefabricated subsection and slip casting channel (1) up and down enclose to form UHPC tenon (3) for pouring
Chamber, is provided with steel reinforcement cage (12) in the UHPC tenon (3), the both ends of the steel reinforcement cage (12) are located at prefabricated subsection up and down
Slip casting channel (1) in.
2. a kind of assembling-type precast pier connection structure according to claim 1, which is characterized in that the UHPC tenon (3) is
HESUHPC is poured to form.
3. a kind of assembling-type precast pier connection structure according to claim 2, which is characterized in that at the top of the prefabricated subsection
Equipped with several plant slots (6) and vertical muscle, it is anchorage inserted bar (4) that the vertical muscle, which stretches out prefabricated subsection pier bottom part,.
4. a kind of assembling-type precast pier connection structure according to claim 3, which is characterized in that the vertical muscle and plant slot
(6) interlaced arrangement.
5. any one a kind of assembling-type precast pier connection structure according to claim 1 ~ 4, which is characterized in that the cavity
(13) several pre-buried connection reinforcing bars (8) and interface reinforcing bar (9) are disposed in.
6. using a kind of assembling-type precast pier connection structure assembly precast pier recorded in one claim of any of the above
Construction method characterized by comprising
Step 1: the production of prefabricated subsection；
Step 2: upper prefabricated subsection (2) is sling；
Step 3: upper and lower prefabricated subsection is located by connecting, the arrangement of steel reinforcement cage；
Step 4: it pours to form UHPC tenon by slip casting channel (1)；
Step 5: repeating Step 2: three, four complete the assembly of entire precast pier.
7. a kind of construction method of precast pier according to claim 6, which is characterized in that the concrete operations of step 1 are as follows:
1) first in reserved plant slot (6) in the top of prefabricated subsection, and vertical muscle is set, plants slot (6) and vertical muscle interlaced arrangement, it will
Vertical muscle stretches out prefabricated subsection pier bottom part as anchorage inserted bar (4)；
2) wet seam cavity (13) is hollowed out out at the kernel of section of prefabricated subsection both ends, several pre-buried connections of arrangement in cavity (13)
Reinforcing bar (8) and interface reinforcing bar (9) set the slip casting channel (1) of connection both ends cavity (13) in prefabricated subsection.
8. a kind of construction method of precast pier according to claim 6, which is characterized in that the concrete operations of step 3 are as follows:
1) the plant slot (6) of prefabricated subsection (7) downward first injects a certain amount of HESUHPC grouting material (11), then will be upper prefabricated
The anchorage inserted bar (4) of segment is entirely insertable in the plant slot (6) of lower prefabricated subsection (7), until the HESUHPC planted in slot (6) is filled
Slurry (11) overflows just；
2) processing is sealed to upper and lower prefabricated subsection cavity seam crossing；
3) steel reinforcement cage (12) are arranged to UHPC tenon by slip casting channel (1), is located at the both ends of steel reinforcement cage (12) pre- up and down
In the slip casting channel (1) of segment processed；
4) HESUHPC(10 is injected by the slip casting channel (1) of upper prefabricated subsection (2) again), be up to overflowing slip casting channel (1)
Only, cast-in-place UHPC tenon (3) is formed after filling up.
9. a kind of construction method of precast pier according to claim 8, which is characterized in that the prefabricated subsection up and down connects
It connects contact position (5) and smears one layer of epoxy glue, the encapsulation process is to be wrapped up with iron sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811240404.2A CN109162199B (en) | 2018-10-24 | 2018-10-24 | Combined prefabricated bridge pier connecting structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811240404.2A CN109162199B (en) | 2018-10-24 | 2018-10-24 | Combined prefabricated bridge pier connecting structure and construction method thereof |
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| Publication Number | Publication Date |
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| CN109162199A true CN109162199A (en) | 2019-01-08 |
| CN109162199B CN109162199B (en) | 2020-01-07 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109722984A (en) * | 2019-01-18 | 2019-05-07 | 福建工程学院 | Half assembled thin-wall piers of one kind and its assembly method |
| CN109783985A (en) * | 2019-02-22 | 2019-05-21 | 湖南大学 | The building and application method of a kind of inertia device with epoxy glue constitutive model |
| CN110029570A (en) * | 2019-04-26 | 2019-07-19 | 重庆锦森腾建筑工程咨询有限公司 | Precast Concrete Segmental Bridges concrete pier and its assembling method |
| CN110080093A (en) * | 2019-06-12 | 2019-08-02 | 重庆锦森腾建筑工程咨询有限公司 | A kind of assembled bridge pier and its construction method |
| CN110396918A (en) * | 2019-07-22 | 2019-11-01 | 长安大学 | A kind of equivalent cast-in-place assembled hollow pier system and its construction method |
| CN110924595A (en) * | 2019-12-31 | 2020-03-27 | 湖南大学 | Steel bar anchoring joint and construction method thereof |
| CN111827095A (en) * | 2020-06-29 | 2020-10-27 | 中国国家铁路集团有限公司 | Prefabricated assembled hollow pier with built-in rib plates and construction method |
| CN113481870A (en) * | 2021-08-11 | 2021-10-08 | 柳州欧维姆机械股份有限公司 | Prestressed anchoring structure system for assembling multi-segment bridge pier and assembling construction method of multi-segment bridge pier |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109722984A (en) * | 2019-01-18 | 2019-05-07 | 福建工程学院 | Half assembled thin-wall piers of one kind and its assembly method |
| CN109722984B (en) * | 2019-01-18 | 2024-02-06 | 福建工程学院 | Semi-assembled thin-wall pier and assembly method thereof |
| CN109783985A (en) * | 2019-02-22 | 2019-05-21 | 湖南大学 | The building and application method of a kind of inertia device with epoxy glue constitutive model |
| CN110029570A (en) * | 2019-04-26 | 2019-07-19 | 重庆锦森腾建筑工程咨询有限公司 | Precast Concrete Segmental Bridges concrete pier and its assembling method |
| CN110080093A (en) * | 2019-06-12 | 2019-08-02 | 重庆锦森腾建筑工程咨询有限公司 | A kind of assembled bridge pier and its construction method |
| CN110396918A (en) * | 2019-07-22 | 2019-11-01 | 长安大学 | A kind of equivalent cast-in-place assembled hollow pier system and its construction method |
| CN110396918B (en) * | 2019-07-22 | 2024-03-12 | 长安大学 | Assembled hollow pier system equivalent to cast-in-situ and construction method thereof |
| CN110924595A (en) * | 2019-12-31 | 2020-03-27 | 湖南大学 | Steel bar anchoring joint and construction method thereof |
| CN111827095A (en) * | 2020-06-29 | 2020-10-27 | 中国国家铁路集团有限公司 | Prefabricated assembled hollow pier with built-in rib plates and construction method |
| CN113481870A (en) * | 2021-08-11 | 2021-10-08 | 柳州欧维姆机械股份有限公司 | Prestressed anchoring structure system for assembling multi-segment bridge pier and assembling construction method of multi-segment bridge pier |
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| Publication number | Publication date |
|---|---|
| CN109162199B (en) | 2020-01-07 |
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