CN110258302B - Semi-prefabricated UHPC shell superposed capping beam and prefabricated pier stud connection structure and construction method thereof - Google Patents
Semi-prefabricated UHPC shell superposed capping beam and prefabricated pier stud connection structure and construction method thereof Download PDFInfo
- Publication number
- CN110258302B CN110258302B CN201910698460.9A CN201910698460A CN110258302B CN 110258302 B CN110258302 B CN 110258302B CN 201910698460 A CN201910698460 A CN 201910698460A CN 110258302 B CN110258302 B CN 110258302B
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- prefabricated
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- bent cap
- uhpc
- shell
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- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 92
- 238000010276 construction Methods 0.000 title abstract description 14
- 230000002787 reinforcement Effects 0.000 claims abstract description 9
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- 238000005265 energy consumption Methods 0.000 claims description 16
- 239000004567 concrete Substances 0.000 claims description 15
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- 239000000084 colloidal system Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000007788 roughening Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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 relates to a connection structure of a semi-prefabricated UHPC shell superposed bent cap and a prefabricated pier column and a construction method thereof, comprising a semi-prefabricated UHPC bent cap shell and a prefabricated pier column positioned below the semi-prefabricated UHPC bent cap shell, wherein the semi-prefabricated UHPC bent cap shell is of an hollow shell-shaped structure without a cover, a pier column post-pouring groove is vertically formed in the top of the prefabricated pier column from top to bottom, a through hole coaxial with the pier column post-pouring groove and matched with the through hole is formed in the bottom of the semi-prefabricated UHPC bent cap shell in a penetrating manner, a plurality of pier column longitudinal ribs are buried in the prefabricated pier column, the upper ends of the pier column longitudinal ribs vertically extend upwards to penetrate through the through hole to the semi-prefabricated UHPC bent cap shell, a bent cap reinforcement cage is placed in the semi-prefabricated UHPC bent cap shell, and the connection structure of the semi-prefabricated UHPC shell superposed bent cap and the prefabricated pier column is simple and reasonable in structure and good in durability.
Description
Technical Field
The invention relates to a connecting structure of a semi-prefabricated UHPC shell superposed bent cap and a prefabricated pier stud and a construction method thereof.
Background
The traditional cast-in-situ bridge pier bracket has the characteristics of high cost, high safety risk, serious environmental pollution, traffic sealing and the like, and the bridge structure prefabrication and assembly technology has the characteristics of high efficiency, safety, high quality, rapidness and environmental protection, and has become the development trend of bridge construction in the current world.
In the prior art, prefabricated bent cap often adopts two types: one is an integral full prefabricated capping beam, which has great dead weight and particularly high requirements on cranes and transportation machinery; the other is a segmented full prefabricated bent cap, water seepage is easy to occur at joints, durability is affected, longitudinal ribs are segmented, and force transmission cannot be continuously carried out on segment interfaces. And the splicing of the prefabricated capping beam and the prefabricated pier stud usually adopts a pre-buried grouting sleeve, a metal corrugated pipe and a pre-stressed steel strand, and then the pre-buried steel bars are accurately positioned and sleeved in the embedded part by a connecting method, so that the requirements on the construction positioning precision of the embedded part and the pre-buried steel bars are higher, the redundancy of on-site construction adjustment is smaller, and the connection integrity is poor.
Disclosure of Invention
In view of the defects of the prior art, the technical problem to be solved by the invention is to provide a connecting structure of a semi-prefabricated UHPC shell superposed cover beam and a prefabricated pier stud and a construction method thereof, which are simple and reasonable in structure and capable of effectively improving durability.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a half prefabricated UHPC shell coincide bent cap and prefabricated pier stud connection structure, including half prefabricated UHPC bent cap shell and the prefabricated pier stud that is located half prefabricated UHPC bent cap shell below, half prefabricated UHPC bent cap shell is hollow and the shell structure of no lid, the pier stud post-cast groove has been vertically seted up to top-down of prefabricated pier stud, half prefabricated UHPC bent cap shell bottom run through be provided with pier stud post-cast groove coaxial and assorted through-hole, this through-hole is located half prefabricated UHPC bent cap shell bottom center, a plurality of pier stud longitudinal bars have been buried in the prefabricated pier stud, the upper end of pier stud longitudinal bar all vertically upwards extends and passes the through-hole to half prefabricated UHPC bent cap shell in, places the bent cap steel reinforcement cage in this half prefabricated UHPC bent cap shell.
Further, the diameter of the through hole at the bottom of the semi-prefabricated UHPC bent cap shell is smaller than the outer diameter of the prefabricated pier column and larger than the diameter of the post-pouring groove of the pier column.
Further, the outer end of the joint of the semi-prefabricated UHPC shell bent cap and the prefabricated pier stud is provided with energy consumption angle steel, one side of the energy consumption angle steel is attached to the lower end of the semi-prefabricated UHPC shell bent cap, and the other side of the energy consumption angle steel is attached to the outer surface of the prefabricated pier stud and is fixedly connected with the outer surface of the prefabricated pier stud through bolts.
Further, the joint position between the lower end of the semi-prefabricated UHPC bent cap shell and the prefabricated pier stud is coated with an epoxy resin colloid material.
Further, shear keys are arranged on the inner side plates of the semi-prefabricated UHPC bent cap shells.
Further, the semi-prefabricated UHPC bent cap shell is internally provided with constructional steel bars.
Furthermore, the pier column longitudinal bars are all thick bars.
Furthermore, the bent cap steel reinforcement cage and the upper ends of the pier column longitudinal ribs are welded.
The working method of the connecting structure of the semi-prefabricated UHPC shell superposed capping beam and the prefabricated pier stud comprises the following steps: (1) Firstly, hoisting a semi-prefabricated UHPC bent cap shell to the position above a prefabricated pier column, enabling the upper end of a longitudinal rib of the pier column to pass through a through hole, erecting the semi-prefabricated UHPC bent cap shell on the prefabricated pier column, and smearing epoxy resin colloid materials on the joint positions of the bottom of the semi-prefabricated UHPC bent cap shell and the prefabricated pier column; (2) Then roughening the contact surface of the semi-prefabricated UHPC bent cap shell and the concrete to be poured, and derusting the longitudinal ribs of the pier column; (3) And pouring concrete after the energy consumption angle steel is installed, wherein the concrete enters the pier post pouring groove and the semi-prefabricated UHPC bent cap shell and connects the prefabricated pier post and the semi-prefabricated UHPC bent cap shell into a whole.
Compared with the prior art, the invention has the following beneficial effects:
(1) The semi-prefabricated UHPC bent cap shell is made of UHPC, has light dead weight and good durability, and overcomes the defects of the prefabricated bent cap in the prior art in equipment requirements and performance.
(2) The semi-prefabricated UHPC bent cap shell has low requirements on site construction positioning accuracy when assembled with the prefabricated pier stud, and the redundancy of site construction adjustment is high.
(3) The semi-prefabricated UHPC bent cap shell is welded with the longitudinal ribs of the pier column through the bent cap reinforcement cage and is connected with the prefabricated pier column through concrete, and replaceable energy consumption angle steel is adopted to improve side force resistance, side rigidity resistance and energy consumption capacity, so that the semi-prefabricated UHPC bent cap shell can be used as a first-pass anti-seismic line, and the whole stress performance is good.
(4) Through the design of pier stud post-pouring groove with prefabricated pier stud and half prefabricated UHPC bent cap shell through concrete placement as an organic whole, can not produce the infiltration phenomenon, will improve the durability.
The invention will be described in further detail with reference to the drawings and the detailed description.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic illustration of the semi-prefabricated UHPC bent cap housing construction of FIG. 1;
FIG. 3 is a schematic view of the construction of the embodiment of the present invention after casting;
fig. 4 is a schematic top view of fig. 3.
In the figure: the novel concrete composite beam comprises a 1-semi-prefabricated UHPC bent cap shell, 2-prefabricated pier columns, 3-pier column post-pouring grooves, 4-through holes, 5-pier column longitudinal ribs, 6-bent cap reinforcement cages, 7-energy consumption angle steel, 8-epoxy resin, 9-shear keys, 10-construction steel bars and 11-concrete.
Detailed Description
In order to make the above features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1-4, a structure for connecting a half-prefabricated UHPC shell superposed bent cap and a prefabricated pier stud comprises a half-prefabricated UHPC bent cap shell 1 and a prefabricated pier stud 2 positioned below the half-prefabricated UHPC bent cap shell, wherein the half-prefabricated UHPC bent cap shell is of an hollow shell-shaped structure without a cover, a pier stud post-pouring groove 3 is vertically formed in the top of the prefabricated pier stud from top to bottom, a through hole 4 coaxial with the pier stud post-pouring groove and matched with the through hole is formed in the bottom of the half-prefabricated UHPC bent cap shell in a penetrating manner, the through hole is positioned in the center of the bottom of the half-prefabricated UHPC bent cap shell, a plurality of pier stud longitudinal ribs 5 are buried in the prefabricated pier studs, the upper ends of the pier stud longitudinal ribs vertically extend upwards to penetrate through the through hole to the half-prefabricated UHPC bent cap shell, and a bent cap reinforcement cage 6 is placed in the half-prefabricated UHPC bent cap shell.
In the embodiment of the invention, the diameter of the through hole at the bottom of the semi-prefabricated UHPC bent cap shell is smaller than the outer diameter of the prefabricated pier column and larger than the diameter of the post-pouring groove of the pier column.
In the embodiment of the invention, a plurality of energy consumption angle steels 7 are arranged at the joint of the semi-prefabricated UHPC shell bent cap and the prefabricated pier column along the periphery of the prefabricated pier column, one side of each energy consumption angle steel is attached to the lower end of the semi-prefabricated UHPC shell bent cap, the other side of each energy consumption angle steel is attached to the outer surface of the prefabricated pier column, and the energy consumption angle steels are fixedly connected through bolts and can be used as first-pass anti-seismic defense lines.
In the embodiment of the invention, the joint position between the lower end of the semi-prefabricated UHPC bent cap shell and the prefabricated pier stud is coated with an epoxy resin 8 colloid material.
In the embodiment of the invention, the inner side plates of the semi-prefabricated UHPC bent cap shell are provided with the shear keys 9; the longitudinal shearing force on the interface between the semi-prefabricated UHPC bent cap shell and the concrete can be born, the relative sliding between the semi-prefabricated UHPC bent cap shell and the concrete is resisted, and the combined action is ensured.
In the embodiment of the invention, the semi-prefabricated UHPC bent cap shell is internally provided with a constructional steel bar 10.
In the embodiment of the invention, the pier column longitudinal bars are all thick bars.
In the embodiment of the invention, the bent cap reinforcement cage and the upper ends of the pier column longitudinal ribs are welded.
The working method of the connecting structure of the semi-prefabricated UHPC shell superposed capping beam and the prefabricated pier stud comprises the following steps: (1) Firstly, hoisting a semi-prefabricated UHPC bent cap shell to the position above a prefabricated pier column, enabling the upper end of a longitudinal rib of the pier column to pass through a through hole, erecting the semi-prefabricated UHPC bent cap shell on the prefabricated pier column, and smearing epoxy resin colloid materials on the joint positions of the bottom of the semi-prefabricated UHPC bent cap shell and the prefabricated pier column; (2) Then roughening the contact surface of the semi-prefabricated UHPC bent cap shell and the concrete to be poured, and derusting the longitudinal ribs of the pier column; (3) And pouring concrete after the energy consumption angle steel is installed, wherein the concrete enters the pier post pouring groove and the semi-prefabricated UHPC bent cap shell and connects the prefabricated pier post and the semi-prefabricated UHPC bent cap shell into a whole.
The invention is not limited to the best mode, and any person can obtain other various types of connecting structures of the semi-prefabricated UHPC shell laminated coping and the prefabricated pier stud and construction methods thereof under the teaching of the invention. All equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.
Claims (6)
1. The utility model provides a half prefabricated UHPC shell coincide bent cap and prefabricated pier stud connection structure which characterized in that: the novel prefabricated UHPC bent cap comprises a semi-prefabricated UHPC bent cap shell and prefabricated pier columns positioned below the semi-prefabricated UHPC bent cap shell, wherein the semi-prefabricated UHPC bent cap shell is of an hollow shell-shaped structure without a cover, pier column post-pouring grooves are vertically formed in the top of the prefabricated pier columns from top to bottom, through holes coaxial with the pier column post-pouring grooves and matched with the pier column post-pouring grooves are formed in the bottom of the semi-prefabricated UHPC bent cap shell in a penetrating mode, the through holes are positioned in the center of the bottom of the semi-prefabricated UHPC bent cap shell, a plurality of pier column longitudinal ribs are buried in the prefabricated pier columns, the upper ends of the pier column longitudinal ribs vertically upwards extend through the through holes to the semi-prefabricated UHPC bent cap shell, and bent cap reinforcement cages are placed in the semi-prefabricated UHPC bent cap shell;
the diameter of the through hole at the bottom of the semi-prefabricated UHPC bent cap shell is smaller than the outer diameter of the prefabricated pier column and larger than the diameter of the post-pouring groove of the pier column;
the outer end of the joint of the semi-prefabricated UHPC bent cap shell and the prefabricated pier stud is provided with energy consumption angle steel, one side of the energy consumption angle steel is attached to the lower end of the semi-prefabricated UHPC bent cap shell, and the other side of the energy consumption angle steel is attached to the outer surface of the prefabricated pier stud and is fixedly connected with the outer surface of the prefabricated pier stud through bolts;
the pier column longitudinal bars are all thick bars.
2. The connection structure of a semi-prefabricated UHPC shell laminated cover beam and a prefabricated pier stud according to claim 1, wherein: and the joint position of the lower end of the semi-prefabricated UHPC bent cap shell and the prefabricated pier stud is coated with an epoxy resin colloid material.
3. The connection structure of a semi-prefabricated UHPC shell laminated cover beam and a prefabricated pier stud according to claim 1, wherein: and shear keys are arranged on the inner side plates of the semi-prefabricated UHPC bent cap shell.
4. The connection structure of the semi-prefabricated UHPC shell laminated cover beam and the prefabricated pier stud according to claim 2, wherein: and constructional steel bars are arranged in the semi-prefabricated UHPC bent cap shell.
5. The connection structure of a semi-prefabricated UHPC shell laminated cover beam and a prefabricated pier stud according to claim 1, wherein: and the bent cap steel reinforcement cage and the upper ends of the pier column longitudinal ribs are welded.
6. A working method of a half-prefabricated UHPC shell laminated cover beam and prefabricated pier stud connection structure, which is characterized by adopting any one of the half-prefabricated UHPC shell laminated cover beam and prefabricated pier stud connection structures as claimed in claims 1-5, and comprising the following steps: (1) Firstly, hoisting a semi-prefabricated UHPC bent cap shell to the position above a prefabricated pier column, enabling the upper end of a longitudinal rib of the pier column to pass through a through hole, erecting the semi-prefabricated UHPC bent cap shell on the prefabricated pier column, and smearing epoxy resin colloid materials on the joint positions of the bottom of the semi-prefabricated UHPC bent cap shell and the prefabricated pier column; (2) Then roughening the contact surface of the semi-prefabricated UHPC bent cap shell and the concrete to be poured, and derusting the longitudinal ribs of the pier column; (3) And pouring concrete after the energy consumption angle steel is installed, wherein the concrete enters the pier post pouring groove and the semi-prefabricated UHPC bent cap shell and connects the prefabricated pier post and the semi-prefabricated UHPC bent cap shell into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910698460.9A CN110258302B (en) | 2019-07-31 | 2019-07-31 | Semi-prefabricated UHPC shell superposed capping beam and prefabricated pier stud connection structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910698460.9A CN110258302B (en) | 2019-07-31 | 2019-07-31 | Semi-prefabricated UHPC shell superposed capping beam and prefabricated pier stud connection structure and construction method thereof |
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| Publication Number | Publication Date |
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| CN110258302A CN110258302A (en) | 2019-09-20 |
| CN110258302B true CN110258302B (en) | 2024-02-09 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847044B (en) * | 2019-11-15 | 2021-09-14 | 中交二航局第一工程有限公司 | Semi-prefabricated assembled bent cap construction method |
| CN112359711A (en) * | 2020-10-22 | 2021-02-12 | 山东高速集团有限公司 | Steel-concrete combined bent cap |
| CN114319080B (en) * | 2022-01-17 | 2024-06-04 | 宁波市高等级公路建设管理中心 | High strength bent cap structure based on UHPC shell |
| CN114319081B (en) * | 2022-01-17 | 2024-01-02 | 宁波市高等级公路建设管理中心 | Prefabricated UHPC bent cap structure of quick installation |
| CN114319065B (en) * | 2022-01-18 | 2022-10-28 | 湖南大学 | Main beam unit with UHPC (ultra high performance polycarbonate) formwork structure, main beam structure and construction method of main beam structure |
| CN114232501B (en) * | 2022-01-18 | 2023-12-12 | 宁波市高等级公路建设管理中心 | Integrated template structure of capping beam pier column |
| CN114575232A (en) * | 2022-04-14 | 2022-06-03 | 宁波市高等级公路建设管理中心 | Large-cantilever semi-fabricated prestressed concrete bent cap and construction process thereof |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2892837C (en) * | 2014-10-16 | 2016-07-12 | Emin Buzimkic | Prefabricated modular rebar modules and methods of using the same |
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| CN105803916A (en) * | 2016-03-30 | 2016-07-27 | 邵旭东 | Steel and ultra-high performance concrete light combined box type cover beam and manufacturing method thereof |
| CN206109970U (en) * | 2016-08-31 | 2017-04-19 | 南京理工大学 | Prefabricated assembled pier suitable for well meizoseismal area |
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| CN110258302A (en) | 2019-09-20 |
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