CN114108452B - Folding type embedded bridge deck continuous expansion device and construction method thereof - Google Patents
Folding type embedded bridge deck continuous expansion device and construction method thereof Download PDFInfo
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- CN114108452B CN114108452B CN202111666392.1A CN202111666392A CN114108452B CN 114108452 B CN114108452 B CN 114108452B CN 202111666392 A CN202111666392 A CN 202111666392A CN 114108452 B CN114108452 B CN 114108452B
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- 238000010276 construction Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 104
- 239000010959 steel Substances 0.000 claims abstract description 104
- 239000010426 asphalt Substances 0.000 claims abstract description 46
- 239000013521 mastic Substances 0.000 claims abstract description 12
- 239000010410 layer Substances 0.000 claims description 52
- 230000002787 reinforcement Effects 0.000 claims description 14
- 239000004570 mortar (masonry) Substances 0.000 claims description 9
- 239000012790 adhesive layer Substances 0.000 claims description 8
- 229920001971 elastomer Polymers 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 239000004593 Epoxy Substances 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 239000011499 joint compound Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000011374 ultra-high-performance concrete Substances 0.000 abstract description 68
- 238000005336 cracking Methods 0.000 abstract description 2
- 230000035929 gnawing Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
-
- 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
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
-
- 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
- E01D19/06—Arrangement, construction or bridging of expansion joints
-
- 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
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
-
- 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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
-
- 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)
- Road Paving Structures (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a folding embedded bridge deck continuous expansion device and a construction method thereof, wherein the folding embedded bridge deck continuous expansion device comprises a pair of bridge decks with opposite ends, the bridge decks comprise a main beam and bridge deck layers positioned above the main beam, fixed steel plates and prefabricated UHPC plates positioned above the fixed steel plates are arranged above the ends of the main beam, a seam-crossing steel plate is arranged between the two fixed steel plates, a middle post-pouring UHPC block is arranged between the two prefabricated UHPC plates, a side post-pouring UHPC block is arranged between the bridge deck layers and the prefabricated UHPC plates, a common asphalt pavement layer is arranged above the bridge deck layers, and a modified asphalt layer or an SMA-13 asphalt mastic layer is paved between the two common asphalt pavement layers. The bridge deck connecting structure not only has good deformation performance and convenient construction performance, but also can effectively improve the rigidity of the continuous part of the bridge deck, improve the overall vertical rigidity and strength of the connecting structure, enable the connecting structure to be matched with the vertical rigidity of the bridge deck, and remarkably reduce the problems of reserved groove edge gnawing and elastoplastic body cracking caused by larger deformation difference when wheels roll through expansion joints.
Description
Technical Field
The invention relates to a folding type embedded bridge deck continuous expansion device and a construction method thereof.
Background
In the traditional seamed bridge, a bridge expansion joint is a weak position in bridge structural design, and becomes one of the difficult problems of bridge construction and maintenance. The expansion joint directly bears the actions of vehicle load, environment and the like, and is extremely easy to generate diseases and even fail. When the expansion joint is damaged, cracking, damage and edge gnawing often occur along with the concrete pavement connected with the expansion joint, and the phenomena of uneven settlement, top expansion of the pavement and the like occur on the pavement of the part in succession over time, so that the service quality of the bridge is greatly reduced, and the safety and durability of the bridge structure are influenced.
The problem of bridge expansion joint is fragile is solved in the tradition, mainly through improving the expansion joint structure or cancel the expansion joint and realize. However, the improvement of the expansion joint structure can only reduce the replacement cycle and the damage degree of the expansion joint, and can not fundamentally solve the maintenance and replacement problems of the expansion joint. Therefore, the bridge pier, in particular to an expansion joint structure at the bridge abutment, is canceled, and is subjected to seamless and continuous transformation of the whole structure, the semi-whole structure or the extended bridge deck, thereby being an important measure for improving the service function of the existing bridge, improving the durability and reducing the maintenance.
Disclosure of Invention
The invention improves the problems, namely the technical problem to be solved by the invention is to provide the folding embedded bridge deck continuous expansion device and the construction method thereof, and the structure not only can realize the seamless bridge deck, but also can effectively shorten the construction period and has little influence on traffic.
The bridge comprises a pair of bridge bodies with opposite ends, wherein each bridge body comprises a main beam and a bridge deck slab layer positioned above the main beam, a fixed steel plate and a prefabricated UHPC plate positioned above the fixed steel plate are arranged above the ends of the main beam, a seam-crossing steel plate is arranged between the two fixed steel plates, a middle post-pouring UHPC block is arranged between the two prefabricated UHPC plates, a side post-pouring UHPC block is arranged between the bridge deck slab layer and the prefabricated UHPC plate, a common asphalt pavement layer is arranged above the bridge deck slab layer, and a modified asphalt layer or an SMA-13 asphalt mastic layer is paved between the two common asphalt pavement layers.
Further, one side of the fixed steel plate, which is far away from the seam crossing steel plate, is provided with strip-shaped teeth, one side of the fixed steel plate, which is close to the seam crossing steel plate, is provided with first folding teeth, and two sides of the seam crossing steel plate are provided with second folding teeth matched with the first folding teeth.
Further, a movable gap is arranged between the seam-crossing steel plate and the fixed steel plate, asphalt is filled between the movable gaps, a waterproof layer is arranged below the movable gap, and the waterproof layer is made of rubber pads or epoxy resin mortar; and an adhesive layer is arranged above the seam-crossing steel plate and the fixed steel plate.
Further, a plurality of preformed holes are formed in the fixed steel plate and used for penetrating through the pegs to fix the fixed steel plate on the main beam.
Further, a plurality of shear nails are welded on the cross-stitch steel plate.
Furthermore, the upper surfaces of the prefabricated UHPC board and the middle post-cast UHPC block are respectively provided with a concave-convex part.
Further, the common asphalt pavement layer is flush with the upper surface of the modified asphalt layer or the SMA-13 asphalt mastic layer.
Further, wet joint steel bars are arranged between the middle post-pouring UHPC block and the prefabricated UHPC plate and between the side post-pouring UHPC block and the prefabricated UHPC plate, a steel reinforcement cage is arranged in the middle of the side post-pouring UHPC block, and bridge deck slab steel bars which are bound together with the steel reinforcement cage and extend inside the side post-pouring UHPC block are arranged on the inner side of the bridge deck slab.
Further, the cover beam and the bridge pier are sequentially arranged below the main beam from top to bottom, and a support is arranged between the main beam and the cover beam.
Further, the construction method of the folding embedded bridge deck continuous expansion device comprises the following steps: (1) Prefabricating a prefabricated UHPC board, a fixed steel plate and a seam-crossing steel plate according to the drawing size and the field requirement in a factory, and performing anti-corrosion and anti-rust treatment; (2) The construction process is carried out normally according to the conventional steps before the girder is erected, and after the girder is placed, joint compound such as foam sponge and the like is added; (3) Placing a fixed steel plate and a seam crossing steel plate at the corresponding position between the main beams, filling up the reserved holes of the fixed steel plate with epoxy mortar after driving in the pegs, pouring a proper amount of asphalt filler into the movable gaps between the fixed steel plate and the seam crossing steel plate, filling up and leveling the tooth gaps of the strip-shaped teeth with epoxy mortar, and finally paving a rubber non-adhesive layer above the fixed steel plate and the seam crossing steel plate; (4) Placing UHPC precast slabs at corresponding positions, and then carrying out bridge deck slab reinforcement, transverse bridge direction reinforcement cage binding and bridge direction wet joint reinforcement binding work on the bridge deck slab; (5) Starting post-pouring work, namely pouring an intermediate post-pouring UHPC block positioned between two prefabricated UHPC boards and pouring wet joint steel bars positioned between the intermediate post-pouring UHPC block and the prefabricated UHPC boards, wherein pouring is performed simultaneously and prepressing by a mould, the surfaces of the intermediate post-pouring UHPC block are the same as the surfaces of the prefabricated UHPC boards so as to form concave-convex parts, and then pouring wet joint steel bars positioned between the side post-pouring UHPC blocks and the prefabricated UHPC boards and pouring bridge deck plate layers on two sides, and normally curing and forming; (6) And finally paving a bridge deck pavement layer, paving the tops of the middle post-pouring UHPC blocks, the prefabricated UHPC plates and the side post-pouring UHPC blocks by adopting SMA-13 asphalt mastic or modified asphalt, paving the rest bridge deck pavement layers by using common asphalt, compacting and flattening, and curing for 3-5 hours to open traffic.
Compared with the prior art, the invention has the following beneficial effects:
(1) The rigidity of bridge deck continuous department has effectively been promoted, has improved connection structure's whole vertical rigidity and intensity, makes its vertical rigidity match with the bridge deck, can show to alleviate the wheel and roll through the expansion joint and lead to the reservation groove to gnaw limit, the damage such as elastomer fracture that lead to because of having great deformation difference. The device is better suitable for complex space stress states of the bridge deck and meets the normal use requirements of continuous construction of the bridge deck;
(2) The deformation performance is good; the bridge has good deformation capability in the forward direction so as to adapt to the expansion deformation caused by Liang Tiyin shrinkage, creep and temperature change, has certain rigidity so as to effectively resist the horizontal displacement of the upper structure of the bridge under the action of braking force, can reduce the deflection of the bridge pier, and is beneficial to the stress of the bridge pier;
(3) The construction performance is convenient; the bridge deck connecting structure is simple in form, has no complex reinforcing steel bar connecting structure, is prefabricated and formed, is suitable for new bridge construction, cancels the complicated process of chiseling and installing expansion joints, and is provided with the complete installation and preparation process, meanwhile, the damage of the disturbance of the vehicles to the UHPC solidification process is effectively prevented, and the construction can be carried out without completely sealing traffic during local reinforcement.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of a prefabricated modified asphalt layer or SMA-13 asphalt mastic layer, a UHPC board, a non-adhesive layer, a cross-joint steel plate and a fixed steel plate according to the embodiment of the invention;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
FIG. 4 is a partial enlarged view at B in FIG. 1;
FIG. 5 is a schematic view of a structure of a cross-seam steel plate and a fixed steel plate according to an embodiment of the present invention;
in the figure: 1-a common asphalt pavement layer; 2-bridge deck layer; 3-modified asphalt layer or SMA-13 asphalt mastic layer; 4-side post-pouring UHPC blocks; 5-fixing a steel plate; 6-prefabricating UHPC boards; 7-a seam-crossing steel plate; 8-no adhesive layer; 9-bridge deck reinforcement; 10-main beams; 11-supporting seats; 12-a capping beam; 13-pier, 14-middle post-pouring UHPC blocks, 15-bar-shaped teeth, 16-first folding teeth, 17-second folding teeth, 18-asphalt layers, 19-preformed holes, 20-shear nails, 21-movable gaps and 22-reinforcement cages.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
Examples: referring to fig. 1-5, there is provided a folding embedded bridge deck continuous expansion device, which comprises a pair of bridge bodies with opposite ends, wherein each bridge body comprises a main beam 10 and a bridge deck slab layer 2 positioned above the main beam, a fixed steel plate 5 and a prefabricated UHPC plate 6 positioned above the fixed steel plate are arranged above the ends of the main beam, a seam-crossing steel plate 7 is arranged between the two fixed steel plates, a middle post-pouring UHPC block 14 is arranged between the two prefabricated UHPC plates, a side post-pouring UHPC block 4 is arranged between the bridge deck slab layer and the prefabricated UHPC plate, a common asphalt pavement layer 1 is arranged above the bridge deck slab layer, and a modified asphalt layer or an SMA-13 asphalt mastic layer 3 is paved between the two common asphalt pavement layers.
In this embodiment, a strip-shaped tooth 15 is disposed on a side of the fixed steel plate away from the seam-crossing steel plate, first folding teeth 16 are disposed on a side of the fixed steel plate close to the seam-crossing steel plate, and second folding teeth 17 matched with the first folding teeth are disposed on two sides of the seam-crossing steel plate.
In this embodiment, due to the fact that the two bridge bodies are locally deformed or stretched due to factors such as temperature and external force, a movable gap 21 is arranged between the seam-crossing steel plate and the fixed steel plate so as to accommodate the deformation of the bridge bodies;
asphalt layers 18 are filled between the movable gaps, a waterproof layer is arranged below the movable gaps so as to prevent water vapor from drifting in from the movable gaps, and the waterproof layer adopts rubber pads or epoxy resin mortar;
and a non-adhesive layer 8 is arranged between the upper parts of the seam-crossing steel plate and the fixed steel plate and the lower parts of the prefabricated UHPC plate, the middle post-pouring UHPC block and the side post-pouring UHPC block.
In this embodiment, the fixing steel plate is provided with a plurality of preformed holes 19 for driving the bolts into the main beam, and the fixing steel plate is fixed on the main beam, so that the fixing steel plate and the main beam are integrated.
In this embodiment, a plurality of shear pins 20 are welded to the cross-stitch steel plate.
In this embodiment, the upper surfaces of the prefabricated UHPC board and the intermediate post-cast UHPC block are both provided with concave-convex portions.
In this embodiment, the common asphalt pavement layer is flush with the upper surface of the modified asphalt layer or the SMA-13 asphalt mastic layer.
In the embodiment, wet joint steel bars are arranged between the middle post-pouring UHPC block and the prefabricated UHPC plate and between the side post-pouring UHPC block and the prefabricated UHPC plate, a steel bar cage 22 is arranged in the middle of the side post-pouring UHPC block, and bridge deck plate layer 2 is internally provided with bridge deck plate steel bars 9 which are bound with the steel bar cage and extend from the inner side of the side post-pouring UHPC block.
The bridge surface layer is provided with a slot for accommodating the telescopic device.
And a reinforcement cage is also arranged in the middle of the middle post-pouring UHPC block.
The cross section of the side post-cast UHPC block is T-shaped, and the lower part of the side post-cast UHPC block extends into the main beam.
In this embodiment, a capping beam 12 and a pier 13 are sequentially arranged below the main beam from top to bottom, and a support 11 is arranged between the main beam and the capping beam.
In this embodiment, the construction steps are as follows:
(1) Prefabricating a prefabricated UHPC board, a fixed steel plate and a seam-crossing steel plate according to the drawing size and the field requirement in a factory, and performing anti-corrosion and anti-rust treatment;
(2) The construction process is carried out normally according to the conventional steps before the girder is erected, and after the girder is placed, joint compound such as foam sponge and the like is added;
(3) Placing a fixed steel plate and a seam crossing steel plate at the corresponding position between the main beams, filling up the reserved holes of the fixed steel plate with epoxy mortar after driving in the pegs, pouring a proper amount of asphalt filler into the movable gaps between the fixed steel plate and the seam crossing steel plate, filling up and leveling the tooth gaps of the strip-shaped teeth with epoxy mortar, and finally paving a rubber non-adhesive layer above the fixed steel plate and the seam crossing steel plate;
(4) Placing UHPC precast slabs at corresponding positions, and then carrying out bridge deck slab reinforcement, transverse bridge direction reinforcement cage binding and bridge direction wet joint reinforcement binding work on the bridge deck slab;
(5) Starting post-pouring work, namely pouring an intermediate post-pouring UHPC block positioned between two prefabricated UHPC boards and pouring wet joint steel bars positioned between the intermediate post-pouring UHPC block and the prefabricated UHPC boards, wherein pouring is performed simultaneously and prepressing by a mould, the surfaces of the intermediate post-pouring UHPC block are the same as the surfaces of the prefabricated UHPC boards so as to form concave-convex parts, and then pouring wet joint steel bars positioned between the side post-pouring UHPC blocks and the prefabricated UHPC boards and pouring bridge deck plate layers on two sides, and normally curing and forming;
(6) And finally paving a bridge deck pavement layer, paving the tops of the middle post-pouring UHPC blocks, the prefabricated UHPC plates and the side post-pouring UHPC blocks by adopting SMA-13 asphalt mastic or modified asphalt, paving the rest bridge deck pavement layers by using common asphalt, compacting and flattening, and curing for 3-5 hours to open traffic.
Any disclosed embodiment of the invention, unless otherwise stated, if it discloses a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by one of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the invention, and the numerical values listed above should not limit the protection scope of the invention.
If the terms "first," "second," etc. are used herein to define a part, those skilled in the art will recognize that: the use of "first" and "second" is used merely to facilitate distinguishing between components and not otherwise stated, and does not have a special meaning.
Meanwhile, if the above invention discloses or relates to parts or structural members fixedly connected with each other, the fixed connection may be understood as follows unless otherwise stated: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present invention and are not limiting; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (4)
1. The construction method of the folding type embedded bridge deck continuous expansion device comprises a pair of bridge bodies with opposite ends, wherein each bridge body comprises a main beam and a bridge deck slab positioned above the main beam, and the folding type embedded bridge deck continuous expansion device is characterized in that a fixed steel plate and a prefabricated UHPC (ultra high pressure) plate positioned above the fixed steel plate are arranged above the ends of the main beam, a seam-crossing steel plate is arranged between the two fixed steel plates, a middle post-pouring UHPC block is arranged between the two prefabricated UHPC plates, a side post-pouring UHPC block is arranged between the bridge deck slab and the prefabricated UHPC plate, a common asphalt pavement layer is arranged above the bridge deck slab, and a modified asphalt layer or an SMA-13 asphalt mastic layer is paved between the two common asphalt pavement layers;
the strip-shaped teeth are arranged on one side, far away from the seam-crossing steel plate, of the fixed steel plate, the first folding teeth are arranged on one side, close to the seam-crossing steel plate, of the fixed steel plate, and the second folding teeth matched with the first folding teeth are arranged on two sides of the seam-crossing steel plate;
a movable gap is formed between the seam-crossing steel plate and the fixed steel plate, asphalt is filled between the movable gaps, a waterproof layer is arranged below the movable gap, and the waterproof layer adopts rubber pads or epoxy resin mortar; an adhesive layer is arranged above the seam-crossing steel plate and the fixed steel plate;
a plurality of shear nails are welded on the seam-crossing steel plate;
the upper surfaces of the prefabricated UHPC plates and the middle post-pouring UHPC blocks are respectively provided with a concave-convex part;
wet joint steel bars are arranged between the middle post-pouring UHPC block and the prefabricated UHPC plate and between the side post-pouring UHPC block and the prefabricated UHPC plate, a steel bar cage is arranged in the middle of the side post-pouring UHPC block, and bridge deck plate steel bars which are bound with the steel bar cage and extend into the side post-pouring UHPC block are arranged on the inner side of the bridge deck plate layer;
the construction method of the folding embedded bridge deck continuous expansion device comprises the following steps: (1) Prefabricating a prefabricated UHPC board, a fixed steel plate and a seam-crossing steel plate according to the drawing size and the field requirement in a factory, and performing anti-corrosion and anti-rust treatment; (2) The construction process is carried out normally according to the conventional steps before the girder is erected, and after the girder is placed, foam sponge joint compound is added; (3) Placing a fixed steel plate and a seam crossing steel plate at the corresponding position between the main beams, filling up the reserved holes of the fixed steel plate with epoxy mortar after driving in the pegs, pouring a proper amount of asphalt filler into the movable gaps between the fixed steel plate and the seam crossing steel plate, filling up and leveling the tooth gaps of the strip-shaped teeth with epoxy mortar, and finally paving a rubber non-adhesive layer above the fixed steel plate and the seam crossing steel plate; (4) Placing UHPC precast slabs at corresponding positions, and then carrying out bridge deck slab reinforcement, transverse bridge direction reinforcement cage binding and bridge direction wet joint reinforcement binding work on the bridge deck slab; (5) Starting post-pouring work, namely pouring an intermediate post-pouring UHPC block positioned between two prefabricated UHPC boards and pouring wet joint steel bars positioned between the intermediate post-pouring UHPC block and the prefabricated UHPC boards, wherein pouring is performed simultaneously and prepressing by a mould, the surfaces of the intermediate post-pouring UHPC block are the same as the surfaces of the prefabricated UHPC boards so as to form concave-convex parts, and then pouring wet joint steel bars positioned between the side post-pouring UHPC blocks and the prefabricated UHPC boards and pouring bridge deck plate layers on two sides, and normally curing and forming; (6) And finally paving a bridge deck pavement layer, paving the tops of the middle post-pouring UHPC blocks, the prefabricated UHPC plates and the side post-pouring UHPC blocks by adopting SMA-13 asphalt mastic or modified asphalt, paving the rest bridge deck pavement layers by using common asphalt, compacting and flattening, and curing for 3-5 hours to open traffic.
2. The construction method of the folding type embedded bridge deck continuous expansion device according to claim 1, wherein a plurality of preformed holes are formed in the fixed steel plate, and the fixed steel plate is fixed on the main beam through bolts.
3. The construction method of the folding type embedded bridge deck continuous expansion device according to claim 1, wherein the common asphalt pavement layer is flush with the upper surface of the modified asphalt layer or the SMA-13 asphalt mastic layer.
4. The construction method of the folding type embedded bridge deck continuous expansion device according to claim 1, wherein a capping beam and a bridge pier are sequentially arranged below the main beam from top to bottom, and a support is arranged between the main beam and the capping beam.
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| CN202111666392.1A CN114108452B (en) | 2021-12-31 | 2021-12-31 | Folding type embedded bridge deck continuous expansion device and construction method thereof |
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| CN202111666392.1A CN114108452B (en) | 2021-12-31 | 2021-12-31 | Folding type embedded bridge deck continuous expansion device and construction method thereof |
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| CN114108452B true CN114108452B (en) | 2024-03-08 |
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| JP2018031235A (en) * | 2016-08-26 | 2018-03-01 | 阪神高速道路株式会社 | Connection structure for steel girder bridge and connection method for existing steel girder bridge |
| CN112761068A (en) * | 2021-01-12 | 2021-05-07 | 湖南中路华程桥梁科技股份有限公司 | T-shaped wet joint structure between prefabricated plates of UHPC bridge floor |
| CN112853916A (en) * | 2021-03-09 | 2021-05-28 | 甘肃畅陇公路养护技术研究院有限公司 | Assembled waffle bridge panel combined box girder structure and construction method thereof |
| CN113737646A (en) * | 2021-09-14 | 2021-12-03 | 福州大学 | Prefabricated UHPC plate-corrugated steel superposed bridge deck connecting structure and construction method |
| CN216838929U (en) * | 2021-12-31 | 2022-06-28 | 福州大学 | Folding embedded type bridge floor continuous telescopic device |
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