CN110565533A - segmented prefabricated assembled pier and construction method thereof - Google Patents
segmented prefabricated assembled pier and construction method thereof Download PDFInfo
- Publication number
- CN110565533A CN110565533A CN201910898579.0A CN201910898579A CN110565533A CN 110565533 A CN110565533 A CN 110565533A CN 201910898579 A CN201910898579 A CN 201910898579A CN 110565533 A CN110565533 A CN 110565533A
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- China
- Prior art keywords
- pier
- segment
- reserved
- bearing platform
- segmental
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- 238000010276 construction Methods 0.000 title claims abstract description 16
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 12
- 229920006332 epoxy adhesive Polymers 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 3
- 230000002787 reinforcement Effects 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000009417 prefabrication Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000007569 slipcasting Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a segmental prefabricated assembled pier and a construction method thereof, wherein the segmental prefabricated assembled pier comprises a pier main body, a capping beam and a bearing platform; the pier main body comprises a plurality of segments; each segment is provided with a plurality of reserved channels surrounding the periphery at the position close to the side surface, and each reserved channel is internally provided with a stress main rib; the side surface of each segment is provided with a hole channel outer stirrup surrounding a circle; a positioning shear key is arranged on each segment; bonding layers are formed between the cover beam and the corresponding segment, between the bearing platform and the corresponding segment and between every two adjacent segments by epoxy adhesives or mortar cushion layers; and a positioning shear key and a plurality of reserved channels are arranged on the bearing platform corresponding to the corresponding sections so as to slip-casting the pipeline. During construction, firstly, a bearing platform is built, and a shear key, a reserved hole channel, a grouting pipeline and a bonding layer are arranged; then each segment is installed in turn; and finally grouting. The method can divide the prefabricated pier sections according to the field hoisting capacity and the transportation capacity.
Description
Technical Field
The invention relates to the technical field of bridge pier construction, in particular to a segmented prefabricated assembled bridge pier and a construction method thereof.
Background
in the prior art, the construction of the fabricated bridge structure can accelerate the construction speed, reduce the influence on environmental traffic, reduce dangerous works such as high-altitude operation and the like, and has good social and economic benefits.
However, in practical applications, the prefabricated bridge structure is limited by field hoisting equipment and transportation capacity, so that a lightweight prefabricated pier is urgently needed, and the application range of the prefabricated pier is expanded.
Therefore, how to reduce the weight of the prefabricated pier becomes a technical problem which needs to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above defects of the prior art, the invention provides a segmental prefabricated spliced pier and a construction method thereof, which can divide the prefabricated segments of the pier according to the field hoisting capacity and the transportation capacity, realize the lightweight of the prefabricated pier, and enable the fabricated bridge structure to be widely applied to various bridge constructions.
In order to achieve the purpose, the invention discloses a segmented prefabricated assembled pier which comprises a pier main body, wherein the upper end and the lower end of the pier main body are respectively provided with a capping beam and a bearing platform.
the bridge pier main body comprises a plurality of sections, each section is a prefabricated part, and the sections are sequentially connected end to end from bottom to top to form the bridge pier main body;
Each segment is of a strip-shaped structure extending along the vertical direction, and a plurality of reserved pore channels surrounding the periphery are arranged at positions close to the side faces;
Each reserved hole channel is a through hole which penetrates from the upper surface to the lower surface of the corresponding segment, and a stressed main rib is arranged in each reserved hole channel;
the side surface of each segment is provided with a hole channel outer stirrup surrounding a circle on the outer side of the corresponding reserved hole channels;
A positioning shear key is arranged on each segment;
Bonding layers are formed between the cover beam and the corresponding segment, between the bearing platform and the corresponding segment and between each two adjacent segments by epoxy adhesives or mortar cushions;
The positioning shear key, the reserved holes and a grouting pipeline communicated with the reserved holes are arranged on the bearing platform corresponding to the corresponding sections.
Preferably, the cross-section of the segments is quadrilateral, octagonal, circular or elliptical.
Preferably, the reserved hole is a metal corrugated pipe, a steel pipe or a concrete reserved hole.
preferably, the stressed main reinforcement is a through-length reinforcement or an extension reinforcement, and is a twisted reinforcement, a smooth reinforcement or a fine-turn twisted reinforcement.
Preferably, the bottom of the stress main rib is connected with a self-locking prestressed anchorage device, the assembly of the pier is completed, and after the self-locking prestressed anchorage device is locked, self-locking prestress is placed at the top of the self-locking prestressed anchorage device, the prestress is tensioned, and the stress of the pier structure is improved.
Preferably, the hooping on the outer side of the hole is provided with an annular hooping, an octagonal hooping or a hook rib according to the arrangement position of the reserved hole.
preferably, the positioning shear key is a concrete shear key or a steel shear pin.
the invention also provides a construction method of the segmental prefabrication and assembly pier, which comprises the following steps:
Step 1, pre-burying the reserved hole channel and the grouting pipeline in the bearing platform and arranging the positioning shear key at the top of the bearing platform on a construction site;
Step 2, smearing an epoxy adhesive or a mortar cushion layer on the bearing platform to form a bonding layer;
step 3, installing the first section of the segment;
Step 4, installing each segment and the cover beam one by one according to the sequence;
And 5, penetrating the stressed main steel bars into the reserved holes with the sections aligned, and pouring mortar through the grouting pipeline to form a pier structure.
the invention has the beneficial effects that:
(1) the method can divide the prefabricated pier sections according to the field hoisting capacity and the transportation capacity.
(2) the application of the invention only increases the epoxy adhesive under the condition that the length of the segment of the prefabricated and assembled pier is very short, and does not greatly increase the material consumption.
the conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
drawings
Fig. 1 shows a schematic cross-sectional view of a segment according to an embodiment of the invention.
Fig. 2 shows a schematic side view of a segment according to an embodiment of the invention.
Fig. 3 shows a schematic structural diagram of an embodiment of the present invention.
Fig. 4 shows a schematic view of a state of building a cap according to an embodiment of the present invention.
fig. 5 is a schematic view showing a state where an epoxy adhesive is applied to a stage in an embodiment of the present invention.
fig. 6 shows a schematic view of a first segment being mounted on a platform according to an embodiment of the invention.
Fig. 7 shows a schematic view of the situation in which a subsequent segment and a capping beam are mounted on the first segment in an embodiment of the invention.
fig. 8 is a schematic view illustrating a state where the entire pier is completed by pouring mortar in one embodiment of the present invention.
Detailed Description
examples
As shown in fig. 1 to 3, the segmental prefabrication and assembly bridge pier comprises a bridge pier main body, wherein a capping beam and a bearing platform are respectively arranged at the upper end and the lower end of the bridge pier main body.
the pier main body comprises a plurality of sections 1, each section 1 is a prefabricated part, and the sections 1 are sequentially connected end to end from bottom to top to form the pier main body;
Each segment 1 is of a strip-shaped structure extending along the vertical direction, and a plurality of reserved pore channels 2 surrounding the periphery are arranged at positions close to the side faces;
Each reserved hole channel 2 is a through hole which penetrates from the upper surface to the lower surface of the corresponding segment 1, and a stressed main rib 3 is arranged in each reserved hole channel 2;
the lateral surface of each segment 1, which is positioned at the outer side of the corresponding reserved hole channels 2, is provided with a hole channel outer stirrup 4 surrounding a circle;
A positioning shear key 5 is arranged on each segment 1;
Bonding layers are formed between the cover beam and the corresponding segment 1, between the bearing platform and the corresponding segment 1 and between every two adjacent segments 1 by epoxy adhesives 6 or mortar cushions;
the bearing platform is provided with a positioning shear key 5, a plurality of reserved holes 2 and a grouting pipeline 7 communicated with the reserved holes 2 corresponding to the corresponding segments 1.
The principle of the invention is that a reserved hole channel 2 in a prefabricated pier segment 1 is utilized, hole channel outside stirrups 4 are arranged outside the reserved hole channel 2, an epoxy adhesive 6 or a mortar cushion layer is arranged between every two adjacent segments 1 to form a bonding layer, the reserved hole channel 2 is arranged in the reserved hole channel 2 after the segments 1 are assembled, and grouting is carried out in the reserved hole channel 2 through a grouting pipeline 7 to complete column assembling.
the segment length L of each segment 1 can be determined according to the field hoisting capacity and the transportation capacity, and the segments 1 can be divided more effectively.
In certain embodiments, the cross-section of the segment 1 is quadrilateral, octagonal, circular, or elliptical.
In some embodiments, the preformed hole 2 is a metal corrugated pipe, a steel pipe or a concrete preformed hole.
In some embodiments, the stressed main reinforcement 3 is a through-length reinforcement or an extension reinforcement, and a twisted reinforcement, a plain reinforcement or a fine-turn twisted reinforcement is adopted.
In some embodiments, the bottom of the stressed main rib 3 is connected with a self-locking prestressed anchorage device, after the assembly of the pier is completed, after the self-locking prestressed anchorage device is locked, self-locking prestress is placed at the top, and the prestress is tensioned, so that the stress of the pier structure is improved.
In some embodiments, the hole outside stirrups 4 are provided with annular stirrups, octagonal stirrups or hook stirrups according to the arrangement position of the reserved hole 2.
in certain embodiments, the positioning shear key 5 is a concrete shear key or a steel shear pin.
As shown in fig. 4 to 8, the construction method of the segmental prefabricated assembled pier provided by the invention further comprises the following steps:
Step 1, pre-burying a reserved hole channel 2 and a grouting pipeline 7 in a bearing platform in a construction site, and arranging a positioning shear key 5 at the top of the bearing platform;
Step 2, coating an epoxy adhesive 6 or a mortar cushion layer on the bearing platform to form a bonding layer;
step 3, installing the first section 1;
step 4, installing each segment 1 and the cover beam one by one according to the sequence;
And 5, penetrating stressed main steel bars 3 into the reserved holes 2 aligned with the sections 1, and pouring mortar through a grouting pipeline 7 to form a pier structure.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. The segmental prefabricated assembled pier comprises a pier main body, wherein the upper end and the lower end of the pier main body are respectively provided with a capping beam and a bearing platform; the method is characterized in that:
The pier main body comprises a plurality of sections (1), each section (1) is a prefabricated part, and the sections (1) are sequentially connected end to end from bottom to top to form the pier main body;
each segment (1) is of a strip-shaped structure extending along the vertical direction, and a plurality of reserved pore channels (2) surrounding the periphery are arranged at positions close to the side faces;
each reserved hole channel (2) is a through hole which penetrates from the upper surface to the lower surface of the corresponding segment (1), and a stressed main rib (3) is arranged in each reserved hole channel (2);
the lateral surface of each segment (1) is provided with a hole channel outer stirrup (4) surrounding a circle on the outer side of the corresponding reserved hole channels (2);
a positioning shear key (5) is arranged on each segment (1);
The bond layer is formed between the cover beam and the corresponding segment (1), between the bearing platform and the corresponding segment (1) and between each two adjacent segments (1) by epoxy adhesives (6) or mortar cushion layers;
The bearing platform is provided with the positioning shear key (5), a plurality of reserved channels (2) and grouting pipelines (7) communicated with the reserved channels (2) corresponding to the corresponding segments (1).
2. The segmental prefabricated pier according to claim 1, characterized in that the cross section of the segments (1) is quadrangular, octagonal, circular or oval.
3. the segmental prefabricated assembly pier according to claim 1, wherein the reserved hole (2) is a metal corrugated pipe, a steel pipe or a concrete reserved hole.
4. the segmental prefabricated assembled pier according to claim 1, wherein the stressed main reinforcements (3) are through-length reinforcements or extension reinforcements and are twisted reinforcements, smooth reinforcements or fine-turn twisted reinforcements.
5. The segmental prefabrication and assembly pier according to claim 1, wherein the bottom of the stress main rib (3) is connected with a self-locking prestressed anchorage device, after the pier is assembled, self-locking prestress is placed at the top of the self-locking prestressed anchorage device after the self-locking prestressed anchorage device is locked, and the stress of the pier structure is improved by tensioning the prestress.
6. the segmental prefabrication and assembly pier according to claim 1, wherein the hooping (4) on the outer side of the hole is provided with an annular hoop, an octagonal hoop or a hook rib according to the arrangement position of the reserved hole (2).
7. The segmental prefabricated spliced pier according to claim 1, wherein the positioning shear key (5) is a concrete shear key or a steel shear pin.
8. The construction method of the segmental prefabrication and assembly pier according to claim 1, comprising the following steps:
Step 1, pre-burying the reserved hole channel (2) and the grouting pipeline (7) in the bearing platform on a construction site, and arranging the positioning shear key (5) at the top of the bearing platform;
step 2, smearing an epoxy adhesive (6) or a mortar cushion layer on the bearing platform to form a bonding layer;
Step 3, installing a first section of the segment (1);
Step 4, installing each segment (1) and the cover beam one by one according to the sequence;
and 5, penetrating the stressed main steel bars (3) into the reserved hole channels (2) aligned with the segments (1), and pouring mortar through the grouting pipelines (7) to form a pier structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910898579.0A CN110565533A (en) | 2019-09-23 | 2019-09-23 | segmented prefabricated assembled pier and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910898579.0A CN110565533A (en) | 2019-09-23 | 2019-09-23 | segmented prefabricated assembled pier and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110565533A true CN110565533A (en) | 2019-12-13 |
Family
ID=68781796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910898579.0A Withdrawn CN110565533A (en) | 2019-09-23 | 2019-09-23 | segmented prefabricated assembled pier and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110565533A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113699893A (en) * | 2021-08-31 | 2021-11-26 | 中交路桥建设有限公司 | Method for installing stirrup steel bar of pi-shaped pier capping beam |
-
2019
- 2019-09-23 CN CN201910898579.0A patent/CN110565533A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113699893A (en) * | 2021-08-31 | 2021-11-26 | 中交路桥建设有限公司 | Method for installing stirrup steel bar of pi-shaped pier capping beam |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191213 |
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| WW01 | Invention patent application withdrawn after publication |