CN109868744B - Full precast concrete bridge deck without cast-in-situ pavement layer - Google Patents
Full precast concrete bridge deck without cast-in-situ pavement layer Download PDFInfo
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- CN109868744B CN109868744B CN201910312216.4A CN201910312216A CN109868744B CN 109868744 B CN109868744 B CN 109868744B CN 201910312216 A CN201910312216 A CN 201910312216A CN 109868744 B CN109868744 B CN 109868744B
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- bridge deck
- precast concrete
- bridge
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- 239000011178 precast concrete Substances 0.000 title claims abstract description 40
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 119
- 239000010959 steel Substances 0.000 claims abstract description 119
- 239000004568 cement Substances 0.000 claims abstract description 14
- 239000002002 slurry Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 13
- 201000010099 disease Diseases 0.000 abstract description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract 1
- 239000004567 concrete Substances 0.000 description 6
- 210000001503 joint Anatomy 0.000 description 6
- 238000009417 prefabrication Methods 0.000 description 4
- 239000011440 grout Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a full precast concrete bridge deck without a cast-in-situ pavement layer, wherein the bridge deck is of a rectangular plate-shaped structure, and a wearing layer is arranged on the bridge deck; a plurality of longitudinal connecting steel bars which are respectively parallel to the width direction of the bridge deck are arranged in the bridge deck along the length direction; every 2 to 5 longitudinal connecting steel bars are divided into a group, and a plurality of grouting connecting grooves are arranged between each group of longitudinal connecting steel bars; the grouting connecting grooves are respectively matched with corresponding steel girders or precast concrete girders, and are fixed with shear nail groups preset on the corresponding steel girders or precast concrete girders by filling high-strength non-shrinkage cement slurry in the grouting connecting grooves; the longitudinal connecting steel bars of every two adjacent bridge decks are fixed by filling high-strength non-shrinkage cement slurry in the steel sleeve. The invention removes transverse wet joints which are easy to generate various diseases and cast-in-situ pavement layers which consume longer construction time, and completely overcomes the defects of the prior art.
Description
Technical Field
The invention relates to the technical field of manufacturing of fully prefabricated concrete bridge decks, in particular to a fully prefabricated concrete bridge deck without a cast-in-place pavement layer.
Background
In the prior art, the urban viaduct superstructure generally adopts a multi-sheet prefabricated concrete girder system, girders are transversely connected through wet joints, and a concrete pavement layer is cast on site on a top plate.
However, the construction quality is not up to standard, and a series of problems such as uneven upper and lower surfaces, front and rear end surfaces, conflict in positions of reinforcing steel bars in wet joints, cracking of the wet joints, water seepage and the like often occur after the erection of the small box girder is completed. The aesthetic property of the bridge is seriously damaged, the service life of the bridge is directly influenced, and even the hidden danger of structural safety is caused.
In addition, the construction time of the cast-in-place concrete pavement layer is long, and the advantages of the bridge prefabrication and assembly technology are not fully exerted.
Therefore, the person skilled in the art needs to develop a fully precast concrete bridge deck system without a cast-in-situ pavement layer, which can further improve the construction quality and accelerate the construction progress on the premise of ensuring the construction precision of the bridge deck.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the invention provides a full precast concrete bridge deck without a cast-in-place pavement layer, which aims to eliminate transverse wet joints which are easy to generate various diseases and cast-in-place pavement layers which consume longer construction time, and completely overcome the shortcomings of the prior art.
In order to achieve the purpose, the invention discloses a full precast concrete bridge deck without a cast-in-place pavement layer, wherein the side surfaces of a plurality of bridge deck boards are spliced in pairs to form the cast-in-place pavement layer.
Wherein each bridge deck is in a rectangular plate-shaped structure, and a layer of wearing layer is arranged on each bridge deck;
a plurality of longitudinal connecting steel bars which are respectively parallel to the width direction of the bridge deck slab are arranged in each bridge deck slab along the length direction;
every 2 to 5 longitudinal connecting steel bars are divided into a group, and a plurality of grouting connecting grooves are arranged between each group of longitudinal connecting steel bars;
the grouting connecting grooves are respectively matched with corresponding steel girders or precast concrete girders, and each grouting connecting groove is filled with high-strength non-shrinkage cement slurry and fixed with shear nail groups preset on the corresponding steel girders or precast concrete girders;
and the longitudinal connecting steel bars of every two adjacent bridge decks are fixed by filling the high-strength non-shrinkage cement paste in the steel sleeve.
Preferably, the steel sleeve is an expansion grouting steel sleeve, and the expansion grouting steel sleeve is pre-embedded at one end of each longitudinal connecting steel bar;
the expansion grouting steel sleeve is arranged on one side of each bridge deck plate corresponding to each longitudinal connecting steel bar;
the other end of each longitudinal connecting steel bar extends out of the side face of the corresponding bridge deck;
the expansion grouting steel sleeve is of a hollow tubular structure with a larger middle size and smaller two ends;
and grouting holes are formed in positions, corresponding to the upper surfaces of the bridge decks, of the expansion grouting steel sleeves, and are used for filling the high-strength non-shrinkage cement slurry.
More preferably, the cross section of the expansion grouting steel casing is square.
Preferably, the steel sleeve is a flat grouting steel sleeve; the flat grouting steel sleeves are pre-embedded at two ends of each longitudinal connecting steel bar;
the flat grouting steel sleeve is of a tubular structure, and grouting grooves extending along the length direction of the flat grouting steel sleeve are formed in positions corresponding to the upper surfaces of the bridge decks;
each grouting groove extends from the middle of the corresponding flat grouting steel sleeve and penetrates through one end of the corresponding flat grouting steel sleeve corresponding to the side face of the bridge deck.
More preferably, the cross section of the flat grouting steel casing is square.
Preferably, each grouting connecting groove comprises a connecting groove main body positioned below the corresponding bridge deck, and a grouting hole positioned above the bridge deck;
and supporting steel bars are arranged between the position of each bridge deck plate, which corresponds to each connecting groove main body, and the steel main beams or the precast concrete main beams.
Preferably, the shear pin group is fixed to the steel main beam in a welding manner.
Preferably, the shear pin group is pre-buried in the precast concrete main beam
More preferably, the position of the precast concrete girder where the shear force nail group is pre-buried is provided with a pre-buried steel plate, and the shear force nail group is fixed on the pre-buried steel plate in a welding mode.
Preferably, a plurality of precast concrete girder prestressed pipes are arranged in the precast concrete girder.
The invention has the beneficial effects that:
the bridge deck is built by adopting a transverse bridge full-width and longitudinal bridge sectional splicing prefabrication method, so that a transverse bridge wet joint structure is removed, the hidden trouble that wet joints are frequently damaged and the attractive appearance and safety of the bridge structure are affected is eliminated.
According to the invention, the bridge deck and the girder are prefabricated separately, so that the weight of transportation and hoisting is reduced, the use of large-scale engineering tools is reduced during site assembly construction, the difficulty of site assembly construction is reduced, the site construction measure cost is saved, and the damage to the road surface along the line caused by overweight in the process of transferring prefabricated components is reduced.
According to the invention, the cast-in-place pavement layer is avoided by improving the prefabrication precision, the wearing layer is arranged at the top of the prefabricated bridge deck, and the driving comfort in the later period is improved by polishing and leveling, so that the field construction period is further shortened, the construction progress is accelerated, and the influence of construction on the environment is reduced.
The conception, specific structure, and technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present invention.
Drawings
Fig. 1 shows a schematic structure of an embodiment of the present invention using an expanded grouting steel casing.
Fig. 2 shows a schematic structural view of an embodiment of the present invention using a flat type grouting steel casing.
Fig. 3 shows an elevation view of a bridge deck in an embodiment of the invention.
Fig. 4 shows a schematic view of AA cross-sectional structure of fig. 1 or fig. 2 according to the present invention.
Fig. 5 is a schematic view showing a connection structure between a steel girder and a grouting connection groove in an embodiment of the present invention.
Fig. 6 is a schematic view showing a connection structure between a precast concrete main beam and a grouting connection groove in an embodiment of the present invention.
Fig. 7 is a schematic view showing a structure in which a pre-buried steel plate is provided on a precast concrete main beam according to an embodiment of the present invention.
Fig. 8 is a schematic structural view showing a connection state of an expanded grouting steel casing according to an embodiment of the present invention.
Fig. 9 is a schematic view showing an installation state of an embodiment of the present invention using an expanded type grouting steel casing.
Fig. 10 is a schematic structural view showing a connection state of a flat type grouting steel casing according to an embodiment of the present invention.
Fig. 11 is a schematic view showing an installation state of an embodiment of the present invention using a flat type grouting steel casing.
Detailed Description
Examples
As shown in fig. 1 to 11, the fully prefabricated concrete bridge deck without the cast-in-place pavement layer is formed by splicing the side surfaces of a plurality of bridge decks 1 in a pairwise connected mode.
Wherein, each bridge deck board 1 is in a rectangular plate-shaped structure, and a layer of wearing layer 9 is arranged on the bridge deck board;
a plurality of longitudinal connecting steel bars 2 which are respectively parallel to the width direction of the bridge deck slab 1 are arranged in each bridge deck slab 1 along the length direction;
every 2 to 5 longitudinal connecting steel bars 2 are divided into a group, and a plurality of grouting connecting grooves 4 are arranged between each group of longitudinal connecting steel bars 2;
the grouting connecting grooves 4 are respectively matched with the corresponding steel main beams 7 or precast concrete main beams 8, and are fixed with shear nail groups 12 preset on the corresponding steel main beams 7 or precast concrete main beams 8 by filling high-strength non-shrinkage cement slurry 11 in each grouting connecting groove 4;
the longitudinal connecting steel bars 2 of every two adjacent bridge decks 1 are all fixed by filling high-strength non-shrinkage cement paste 11 in the steel sleeve.
The bridge deck slab 1 is built by adopting a transverse bridge full-width and longitudinal bridge sectional splicing prefabrication method, so that a transverse bridge wet joint structure is removed, frequent occurrence of diseases of the wet joint is eliminated, and hidden dangers affecting the attractive appearance and safety of the bridge structure are eliminated.
In some embodiments, the steel sleeve is an expansion type grouting steel sleeve 3, and the expansion type grouting steel sleeve 3 is pre-embedded at one end of each longitudinal connecting steel bar 2;
an expansion grouting steel sleeve 3 is arranged on one side of each bridge deck 1 corresponding to each longitudinal connecting steel bar 2;
the other end of each longitudinal connecting steel bar 2 extends out of the side surface of the corresponding bridge deck plate 1;
the expansion grouting steel sleeve 3 is of a hollow tubular structure with a larger middle size and smaller two ends;
as shown in fig. 8 and 9, each deck plate 1 inserts the ends of the plurality of longitudinal connection bars 2 protruding from the side of the corresponding deck plate 1 into the plurality of expansion type grouting steel bushings 3 of the other deck plate 1 at an inclined angle at the time of assembly;
the positions of the expansion grouting steel sleeve 3 corresponding to the upper surfaces of the corresponding bridge decks 1 are provided with grouting holes for filling high-strength non-shrinkage cement slurry 11.
In some embodiments, the cross section of the expanded grouted steel casing 3 is square.
In certain embodiments, the steel casing is a flat grouted steel casing 5; the flat grouting steel sleeves 5 are pre-embedded at the two ends of each longitudinal connecting steel bar 2;
the flat grouting steel sleeve 5 is of a tubular structure, and grouting grooves extending along the length direction of the flat grouting steel sleeve 5 are arranged at positions corresponding to the upper surfaces of the corresponding bridge decks 1;
each grouting groove extends from the middle of the corresponding flat grouting steel sleeve 5 and penetrates through one end of the corresponding flat grouting steel sleeve 5 corresponding to the side surface of the corresponding bridge deck 1;
as shown in fig. 10 and 11, when assembling, the plurality of flat grouting steel bushings 5 of each two bridge decks 1 are aligned with each other, and each two corresponding grouting grooves are spliced into a long hole;
each joint connection bar 10 provided by each long hole restrains a plurality of longitudinal connection bars 2 corresponding to each other between every two bridge decks 1, and high-strength non-shrinkage cement paste 11 is poured into the long holes from the plurality of long holes to fix the two adjacent bridge decks 1.
In some embodiments, the cross-section of the flat grout steel sleeve 5 is square.
In some embodiments, each grout joint groove 4 comprises a joint groove body located below the corresponding deck slab 1, and a grout hole located above the deck slab 1;
supporting steel bars 14 are arranged between the position of each bridge deck plate 1 corresponding to each connecting groove main body and the steel main beam 7 or the precast concrete main beam 8.
The support bars 14 serve to temporarily support the prefabricated bridge deck 1 and serve as temporary sideforms.
In some embodiments, the shear pin clusters 12 are secured to the steel main beam 7 by welding.
In some embodiments, the shear pin clusters 12 are pre-embedded in the precast concrete main beam 8.
In some embodiments, the precast concrete main beam 8 is provided with an embedded steel plate 13 at the position of the embedded shear pin group 12, and the shear pin group 12 is fixed on the embedded steel plate 13 in a welding manner.
In some embodiments, a number of precast concrete girder pre-stressing conduits 6 are provided within the precast concrete girders 8.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (6)
1. The full precast concrete bridge deck without the cast-in-situ pavement layer is formed by splicing the side surfaces of a plurality of bridge deck plates (1) in pairs; the method is characterized in that:
each bridge deck (1) is of a rectangular plate-shaped structure, and a layer of wearing layer (9) is arranged on each bridge deck;
a plurality of longitudinal connecting steel bars (2) which are respectively parallel to the width direction of the bridge deck plate (1) are arranged in each bridge deck plate (1) along the length direction;
every 2 to 5 longitudinal connecting steel bars (2) are divided into a group, and a plurality of grouting connecting grooves (4) are arranged between each group of longitudinal connecting steel bars (2);
the grouting connecting grooves (4) are respectively matched with corresponding steel main beams (7) or precast concrete main beams (8), and each grouting connecting groove (4) is filled with high-strength shrinkage-free cement paste (11) and fixed with shear pin groups (12) preset on the corresponding steel main beams (7) or precast concrete main beams (8);
the longitudinal connecting steel bars (2) of every two adjacent bridge decks (1) are fixed by filling the high-strength non-shrinkage cement slurry (11) in a steel sleeve;
the steel sleeve is an expansion grouting steel sleeve (3), and the expansion grouting steel sleeve (3) is pre-embedded at one end of each longitudinal connecting steel bar (2);
one side of each bridge deck (1) is provided with an expansion grouting steel sleeve (3) corresponding to each longitudinal connecting steel bar (2);
the other end of each longitudinal connecting steel bar (2) extends out of the side surface of the corresponding bridge deck (1);
the expansion grouting steel sleeve (3) is of a hollow tubular structure with a large middle size and small two ends;
grouting holes are formed in positions, corresponding to the upper surfaces of the bridge decks (1), of the expansion grouting steel sleeves (3) and are used for filling the high-strength non-shrinkage cement slurry (11);
the cross section of the expansion grouting steel casing (3) is square;
each grouting connecting groove (4) comprises a connecting groove main body positioned below the corresponding bridge deck (1) and a grouting hole positioned above the bridge deck (1);
and supporting steel bars (14) are arranged between the position, corresponding to each connecting groove main body, of each bridge deck (1) and the steel main beam (7) or the precast concrete main beam (8).
2. The full precast concrete bridge deck without the cast-in-situ pavement layer is formed by splicing the side surfaces of a plurality of bridge deck plates (1) in pairs; the method is characterized in that:
each bridge deck (1) is of a rectangular plate-shaped structure, and a layer of wearing layer (9) is arranged on each bridge deck;
a plurality of longitudinal connecting steel bars (2) which are respectively parallel to the width direction of the bridge deck plate (1) are arranged in each bridge deck plate (1) along the length direction;
every 2 to 5 longitudinal connecting steel bars (2) are divided into a group, and a plurality of grouting connecting grooves (4) are arranged between each group of longitudinal connecting steel bars (2);
the grouting connecting grooves (4) are respectively matched with corresponding steel main beams (7) or precast concrete main beams (8), and each grouting connecting groove (4) is filled with high-strength shrinkage-free cement paste (11) and fixed with shear pin groups (12) preset on the corresponding steel main beams (7) or precast concrete main beams (8);
the longitudinal connecting steel bars (2) of every two adjacent bridge decks (1) are fixed by filling the high-strength non-shrinkage cement slurry (11) in a steel sleeve;
the steel sleeve is a flat grouting steel sleeve (5); the flat grouting steel sleeves (5) are pre-buried at two ends of each longitudinal connecting steel bar (2);
the flat grouting steel sleeve (5) is of a tubular structure, and grouting grooves extending along the length direction of the flat grouting steel sleeve (5) are formed in positions corresponding to the upper surfaces of the bridge decks (1);
each grouting groove extends from the middle part of the corresponding flat grouting steel sleeve (5) and penetrates through one end of the corresponding flat grouting steel sleeve (5) corresponding to the side surface of the bridge deck (1);
the cross section of the flat grouting steel sleeve (5) is square;
each grouting connecting groove (4) comprises a connecting groove main body positioned below the corresponding bridge deck (1) and a grouting hole positioned above the bridge deck (1);
and supporting steel bars (14) are arranged between the position, corresponding to each connecting groove main body, of each bridge deck (1) and the steel main beam (7) or the precast concrete main beam (8).
3. Fully precast concrete deck free of cast-in-place pavement according to claim 1 or 2, characterized in that the shear pin group (12) is fixed to the steel girder (7) in a welded manner.
4. Fully precast concrete deck free of cast-in-place pavement according to claim 1 or 2, characterized in that the shear pin group (12) is pre-embedded in the precast concrete main girder (8).
5. The full precast concrete deck slab free of cast-in-place pavement according to claim 4, wherein the precast concrete main beam (8) is provided with an embedded steel plate (13) at a position where the shear pin group (12) is embedded, and the shear pin group (12) is fixed on the embedded steel plate (13) in a welding manner.
6. Fully precast concrete deck slab free of cast-in-place pavement according to claim 1 or 2, characterized in that a number of precast concrete girder pre-stressing pipes (6) are arranged in the precast concrete girders (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910312216.4A CN109868744B (en) | 2019-04-18 | 2019-04-18 | Full precast concrete bridge deck without cast-in-situ pavement layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910312216.4A CN109868744B (en) | 2019-04-18 | 2019-04-18 | Full precast concrete bridge deck without cast-in-situ pavement layer |
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| Publication Number | Publication Date |
|---|---|
| CN109868744A CN109868744A (en) | 2019-06-11 |
| CN109868744B true CN109868744B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910312216.4A Active CN109868744B (en) | 2019-04-18 | 2019-04-18 | Full precast concrete bridge deck without cast-in-situ pavement layer |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111455846A (en) * | 2020-03-13 | 2020-07-28 | 山东大学 | Prefabricated assembled transverse prestress bridge deck and bridge |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH083935A (en) * | 1994-06-20 | 1996-01-09 | Ishikawajima Constr Materials Co Ltd | Joint structure between precast floor slab and bridge girder for constituting bridge subgrade |
| JP2014177766A (en) * | 2013-03-13 | 2014-09-25 | Kumagai Gumi Co Ltd | Method for constructing concrete precast floor slab for bridge |
| CN106284045A (en) * | 2016-09-19 | 2017-01-04 | 武汉理工大学 | A kind of secondary overlapping concrete slab girder steel combined bridge structure and construction method thereof |
| CN106436569A (en) * | 2016-11-24 | 2017-02-22 | 宁波大学 | Prestressed bridge surface connection device and prefabrication method and construction method thereof |
| CN210013124U (en) * | 2019-04-18 | 2020-02-04 | 上海市城市建设设计研究总院（集团）有限公司 | Full precast concrete bridge deck without cast-in-place pavement layer |
-
2019
- 2019-04-18 CN CN201910312216.4A patent/CN109868744B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH083935A (en) * | 1994-06-20 | 1996-01-09 | Ishikawajima Constr Materials Co Ltd | Joint structure between precast floor slab and bridge girder for constituting bridge subgrade |
| JP2014177766A (en) * | 2013-03-13 | 2014-09-25 | Kumagai Gumi Co Ltd | Method for constructing concrete precast floor slab for bridge |
| CN106284045A (en) * | 2016-09-19 | 2017-01-04 | 武汉理工大学 | A kind of secondary overlapping concrete slab girder steel combined bridge structure and construction method thereof |
| CN106436569A (en) * | 2016-11-24 | 2017-02-22 | 宁波大学 | Prestressed bridge surface connection device and prefabrication method and construction method thereof |
| CN210013124U (en) * | 2019-04-18 | 2020-02-04 | 上海市城市建设设计研究总院（集团）有限公司 | Full precast concrete bridge deck without cast-in-place pavement layer |
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| CN109868744A (en) | 2019-06-11 |
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