CN115305813A - Prefabricated bridge deck steel-concrete shear connector structure and construction method thereof - Google Patents
Prefabricated bridge deck steel-concrete shear connector structure and construction method thereof Download PDFInfo
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- CN115305813A CN115305813A CN202211045256.5A CN202211045256A CN115305813A CN 115305813 A CN115305813 A CN 115305813A CN 202211045256 A CN202211045256 A CN 202211045256A CN 115305813 A CN115305813 A CN 115305813A
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- 238000010276 construction Methods 0.000 title claims abstract description 24
- 238000003466 welding Methods 0.000 claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims description 293
- 239000010959 steel Substances 0.000 claims description 293
- 230000000149 penetrating effect Effects 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 230000002787 reinforcement Effects 0.000 claims description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 7
- 238000005452 bending Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 230000008602 contraction Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention discloses a prefabricated bridge deck steel-concrete shear connector structure and a construction method thereof, belonging to the technical field of bridge construction, wherein the connector structure comprises a first bridge deck and a second bridge deck to be connected, as well as a first connector and a second connector which are respectively connected to the bottoms and tops of the first bridge deck and the second bridge deck; the first connecting piece is provided with a first connecting plate and a first butt strap, wherein the first butt strap is fixedly embedded in the bottom of the end of the first bridge deck by double-nut high-strength bolts, the first butt strap is fixedly embedded in the bottom of the end of the second bridge deck by welding nails, and the extending lap joint part of the first butt strap is fixedly bolted with the first connecting plate; the second connecting piece has the second fishplate bar that two nuts excel in the bolt embedding and be fixed in second bridge floor board end top and welds the second attachment strap that the nail embedding is fixed in first bridge floor board end top and its extension overlap joint portion and second fishplate bar bolted connection are fixed. The invention has flexible and compact structural design, is easy to operate on site, simplifies the difficulty of the joint connection operation between the on-site bridge decks and improves the construction efficiency.
Description
Technical Field
The invention belongs to the technical field of bridge construction, and particularly relates to a prefabricated bridge deck steel-concrete shear connector structure and a construction method thereof.
Background
The bridge deck connection mode of the prefabricated assembled combined beam bridge is the key point for improving the assembling efficiency, the connection mode of the prefabricated bridge deck at the present stage is mainly a lap-joint steel bar cast-in-place wet joint, the contraction and creep of cast-in-place wet joint concrete easily causes the cracking of the deck, the lap-joint difficulty is caused by the bending of longitudinal steel bars easily caused by construction errors, the bonding strength of new and old concrete connection interfaces is low and the cracking is easy to cause the design difficulty, and the prefabricated bridge deck wet joint construction difficulty is large, the construction period is long, and the prefabricated bridge deck is seriously influenced by the environment. The dry prefabricated bridge deck steel-concrete connecting piece can avoid shrinkage and creep of cast-in-place concrete and cracking surfaces of new and old concrete, ensure the bearing capacity of the assembled structure and fully utilize the material performance of steel and concrete.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a prefabricated bridge deck steel-concrete shear connector structure and a construction method thereof.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
in a first aspect, the invention provides a prefabricated bridge deck steel-concrete shear connector structure, which is applied to a positive and negative bending moment action section of a bridge, and comprises a first bridge deck and a second bridge deck to be connected, as well as a first connecting piece and a second connecting piece which are respectively connected to the bottom and the top between the first bridge deck and the second bridge deck;
the first connecting piece is provided with a first connecting plate and a first butt strap, wherein double nuts and high-strength bolts are embedded and fixed at the bottom of the end of the first bridge deck, welding nails are embedded and fixed at the bottom of the end of the second bridge deck, and the extending lap joint part of the first butt strap is bolted and fixed on the first connecting plate;
the second connecting piece is provided with a second connecting plate and a welding nail, the double nuts and high-strength bolts are embedded and fixed in the top of the second bridge deck end, the welding nail is embedded and fixed in the second butt strap at the top of the first bridge deck end, and the extending lap part of the second butt strap is bolted and fixed in the second connecting plate.
Further, the first tab comprises:
a first transverse steel plate which is provided with a first transverse steel plate,
the first vertical steel plates are arranged at the tops of the first transverse steel plates at intervals along the bridge width direction and are positioned between adjacent longitudinal steel bars at the end part of the first bridge deck, and the first vertical steel plates are also provided with a plurality of transverse steel bars at the end part of the first bridge deck in a penetrating manner;
the first strap includes:
a second transverse steel plate provided with an extending lap joint part extending, lap-jointed and fixed to the first transverse steel plate and flush with the bottom surfaces of the first and second deck plates,
the vertical steel sheet of a plurality of second, along the bridge width direction interval set up in the horizontal steel sheet top of second just is located between the adjacent longitudinal reinforcement of second decking tip, still wear to be equipped with a plurality of being located on the vertical steel sheet of second the horizontal reinforcing bar of second decking tip.
Furthermore, a plurality of first double-nut high-strength bolts are further arranged on the first connecting plate, are arranged between the adjacent first vertical steel plates and are arranged between the adjacent transverse steel bars at intervals along the bridge length direction;
still be equipped with a plurality of first vertical welding nails on the first butt strap, first vertical welding nail sets up in adjacent between the vertical steel sheet of second, and set up in adjacent along the bridge length direction interval between the horizontal reinforcing bar.
Further, the second fishplate bar includes:
a third transverse steel plate is arranged on the first transverse steel plate,
a plurality of third vertical steel plates which are arranged at the bottom of the third transverse steel plates at intervals along the bridge width direction and are positioned between the adjacent longitudinal steel bars at the end part of the second bridge deck, a plurality of transverse steel bars positioned at the end part of the second bridge deck are also arranged on the third vertical steel plates in a penetrating way,
the second double-nut high-strength bolts are arranged between the adjacent third vertical steel plates and are arranged between the adjacent transverse steel bars at intervals along the bridge length direction;
the second strap includes:
a fourth transverse steel plate which is provided with an extending lap joint part extending, lap-jointed and fixed towards the third transverse steel plate and is flush with the top surfaces of the first bridge deck plate and the second bridge deck plate,
a plurality of fourth vertical steel plates which are arranged at the bottom of the fourth transverse steel plates at intervals along the bridge width direction and are positioned between the adjacent longitudinal steel bars at the end part of the first bridge deck, a plurality of transverse steel bars positioned at the end part of the first bridge deck are also arranged on the fourth vertical steel plates in a penetrating way,
and the second vertical welding nails are arranged between the adjacent fourth vertical steel plates and are arranged between the adjacent transverse steel bars at intervals along the bridge length direction.
Furthermore, the first double-nut high-strength bolt and the second vertical welding nail and the second double-nut high-strength bolt and the first vertical welding nail are in staggered meshing and extend oppositely.
Furthermore, a plurality of bolt holes matched with the first double-nut high-strength bolt are respectively formed in the extending and overlapping parts of the first transverse steel plate and the second transverse steel plate, the top end of the first double-nut high-strength bolt sequentially penetrates through the bolt holes in the extending and overlapping parts of the first transverse steel plate and the second transverse steel plate, and the two sides of the extending and overlapping parts of the first transverse steel plate and the second transverse steel plate are fixedly connected through nuts;
the top end of the second double-nut high-strength bolt sequentially penetrates through the bolt holes in the extending and overlapping parts of the third transverse steel plate and the fourth transverse steel plate, and the third transverse steel plate and the fourth transverse steel plate are fixedly connected through nuts on two sides of the extending and overlapping parts of the third transverse steel plate and the fourth transverse steel plate.
Furthermore, the first vertical steel plate, the second vertical steel plate, the third vertical steel plate and the fourth vertical steel plate are positioned in the same straight line direction or the same vertical plane along the bridge length direction;
the first double-nut high-strength bolt, the second vertical welding nail, the second double-nut high-strength bolt and the first vertical welding nail are located in the same straight line direction or the same vertical plane along the bridge length direction.
Further, the second tab comprises:
a third transverse steel plate is arranged on the first transverse steel plate,
a plurality of first inverted J-shaped channel steel plates are provided with a plurality of inverted J-shaped slot holes along the bridge width direction, the inverted J-shaped channel steel plates are fixedly arranged at the bottom of the third transverse steel plate along the bridge length direction at intervals and are positioned between adjacent transverse steel bars at the end part of the second bridge deck plate, a longitudinal steel bar provided with a fastening nut on the left side of the inverted J-shaped slot hole is fixedly penetrated in the inverted J-shaped slot holes positioned in the same straight line direction along the bridge length direction between the first inverted J-shaped channel steel plates,
the first U-shaped groove steel plates are provided with U-shaped groove holes for penetrating the transverse steel bars, and the first U-shaped groove steel plates are fixedly arranged between the adjacent first inverted J-shaped channel steel plates and between the adjacent longitudinal steel bars at uniform intervals along the bridge width direction;
the second strap includes:
a fourth transverse steel plate which is provided with an extending lap joint part extending, lap-jointed and fixed towards the third transverse steel plate and is flush with the top surfaces of the first bridge deck plate and the second bridge deck plate,
a plurality of second inverted J-shaped slot steel plates are provided with a plurality of inverted J-shaped slots along the width direction of the bridge, the inverted J-shaped channel steel plates are fixedly arranged at the bottom of the fourth transverse steel plate along the length direction of the bridge at intervals and are positioned between the adjacent transverse steel bars at the end part of the first bridge deck plate, a longitudinal steel bar provided with a fastening nut on the left side of the inverted J-shaped slot is penetrated and fixed in a plurality of inverted J-shaped slots positioned in the same straight line direction along the length direction of the bridge between the second inverted J-shaped channel steel plates,
a plurality of second U groove steel sheets offer and are used for wearing to establish the U type slotted hole of horizontal reinforcing bar, second U groove steel sheet sets up in adjacent along the even interval of bridge width direction fixed between the second channel-section steel plate of falling J and adjacent between the longitudinal reinforcement.
Furthermore, a plurality of bolt holes for penetrating fastening bolts are formed in the extending and overlapping portions of the third transverse steel plate and the fourth transverse steel plate respectively, and the extending and overlapping portions of the third transverse steel plate and the fourth transverse steel plate are fastened and connected through the fastening bolts.
Furthermore, the first vertical steel plates and the second vertical steel plates are butted one by one and are positioned in the same linear direction or the same vertical plane;
and/or the longitudinal steel bars between the first bridge deck and the second bridge deck correspond to each other one by one and are positioned in the same linear direction, and the first U-shaped groove steel plate and the second U-shaped groove steel plate which are positioned between the adjacent longitudinal steel bars are positioned in the same linear direction.
In a second aspect, the present invention provides a construction method of the precast bridge deck steel-concrete shear connector structure according to any one of the first aspects, comprising the steps of:
embedding and fixing a first connecting plate and a first butt strap of a first connecting piece on the bottom ends of a first bridge deck plate and a second bridge deck plate respectively, enclosing longitudinal steel bars and transverse steel bars into a steel bar mesh, and prefabricating and pouring concrete;
embedding and fixing a second connecting plate and a second butt strap of a second connecting piece on the top ends of a second bridge deck plate and a first bridge deck plate respectively, enclosing longitudinal steel bars and transverse steel bars into a steel bar mesh, and prefabricating and pouring concrete;
hoisting and positioning a second bridge deck embedded and fixed with a first butt strap and a second butt strap by using hoisting machinery;
and hoisting and positioning the first bridge deck plate embedded and fixed with the second butt strap and the first butt strap by using hoisting machinery so as to align the end parts of the first bridge deck plate and the second bridge deck plate, lapping the first butt strap at the bottom of the first butt strap and lapping the second butt strap at the top of the second butt strap, adjusting bolt holes at the aligned lap joint, and fixedly connecting the first butt strap and the second butt strap by using bolts.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a prefabricated bridge deck steel-concrete shear connector structure which is applied to a first bridge deck and a second bridge deck to be connected of a positive and negative bending moment action section of a bridge, and adopts a first connecting piece and a second connecting piece which are respectively connected with the bottom and the top between the first bridge deck and the second bridge deck, wherein the first connecting piece and the second connecting piece are respectively embedded into a transverse reinforcing steel bar and a longitudinal reinforcing steel bar which are fixed at the end part of the bridge deck, and are embedded into and penetrated into a reinforcing steel bar net enclosed by the transverse reinforcing steel bar and the longitudinal reinforcing steel bar through vertical steel plates, double-nut high-strength bolts, vertical welding nails, inverted J-shaped steel plates, U-shaped steel plates and the like, and are fixedly connected in a lap joint manner at the upper end part and the lower end part of the bridge deck through the first connecting piece and the second connecting piece, so that the simple and quick connection of joints between the prefabricated bridge decks is realized, the whole structure design is flexible and compact, the field construction operation is easy, the joint connection operation difficulty between the field bridge decks is simplified, the construction efficiency is improved, and the labor cost and the material cost investment in the construction process is reduced.
Drawings
FIG. 1 is a schematic structural diagram illustrating a construction of a prefabricated bridge deck steel-concrete shear connector according to an embodiment of the present invention;
FIG. 2 is a partial schematic view of a prefabricated bridge deck steel-concrete shear connector configuration provided in accordance with an embodiment of the present invention;
FIG. 3 is a disassembled schematic view illustrating a construction of a prefabricated bridge deck steel-concrete shear connector according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of another prefabricated bridge deck steel-concrete shear connector configuration provided in accordance with an embodiment of the present invention;
FIG. 5 is a partial schematic view of another prefabricated bridge deck steel-concrete shear connector configuration provided in accordance with an embodiment of the present invention;
FIG. 6 is a disassembled schematic view of another prefabricated bridge deck steel-concrete shear connector structure provided in accordance with an embodiment of the present invention;
in the figure:
1. a first deck slab; 2. a second deck slab; 3. a first connecting member; 4. a second connecting member; 5. a first web plate; 6. a first strap; 7. a second receiving plate; 8. a second strap; 9. a first transverse steel plate; 10. a second transverse steel plate; 11. a third transverse steel plate; 12. a fourth transverse steel plate; 13. a first vertical steel plate; 14. a second vertical steel plate; 15. a third vertical steel plate; 16. a fourth vertical steel plate; 17. a first double-nut high-strength bolt; 18. a first vertical weld nail; 19. a second double-nut high-strength bolt; 20. a second vertical weld nail; 21. a first inverted J-slot steel plate; 22. a second inverted J-slot steel plate; 23. a first U-channel steel plate; 24. a second U-groove steel plate; 25. transverse reinforcing steel bars; 26. longitudinal reinforcing steel bars; 27. bolt holes; 28. an inverted J-shaped slot; 29. a U-shaped slot; 30. opening a hole; 31. a nut; 32. and (4) screws.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in fig. 1 and 4, the embodiment of the present invention provides a prefabricated bridge deck steel-concrete shear connector structure applied to a positive and negative bending moment action section of a bridge, comprising two first and second bridge decks 1 and 2 to be connected, and first and second connectors 3 and 4 connected to the bottom and top between the first and second bridge decks 1 and 2, respectively.
Referring to fig. 2 and 5, the first connecting member 3 and the second connecting member 4 are respectively embedded and fixed in the reinforcing meshes which are prefabricated and cast by concrete and are formed in the first bridge deck 1 and the second bridge deck 2 by using welding nails, and the reinforcing meshes are mainly bound and connected together by the transverse steel bars 25 and the longitudinal steel bars 26. Thus, the first bridge deck 1 and the second bridge deck 2 are connected in an assembling manner through the first connecting pieces 3 and the second connecting pieces 4 to form a steel-mixed connecting structure between the prefabricated bridge decks.
The first connecting piece 3 and the second connecting piece 4 are produced by factory prefabrication, are embedded and fixed in the first bridge deck slab 1 and the second bridge deck slab 2 in advance when prefabricated bridge deck slabs are produced, are molded by concrete pouring, and are hoisted to be assembled on site after the maintenance meets the construction performance.
Specifically, the first connecting piece 3 is provided with a first connecting plate 5 embedded in the bottom of the first bridge deck 1 and a first butt strap 6 embedded in the bottom of the second bridge deck 2 and fixedly lapped with the first connecting plate 5;
the second connector 4 has a second bridge plate 7 embedded in the top of the second bridge deck 2 and a second bridge plate 8 embedded in the top of the first bridge deck 1 and fixed to the second bridge plate 7 in an overlapping manner.
In some embodiments, with reference to fig. 2, 3, 5, 6, the specific structural configuration of the first tab 5 is described as follows, including in particular:
the first transverse steel plate 9 is provided with,
a plurality of first vertical steel plates 13 set up in the top of first horizontal steel plate 9 and lie in between the adjacent longitudinal reinforcement 26 of 1 tip of first decking along the bridge width direction interval, still wear to be equipped with a plurality of horizontal reinforcing bars 25 that lie in 1 tip of first decking on the first vertical steel plate 13.
In the present embodiment, the specific structural configuration of the first strap 6 is described as follows, specifically including:
a second transverse steel plate 10 provided with an extending lap joint part extending and fixed to the first transverse steel plate 9 and flush with the bottom surfaces of the first and second decking 1, 2,
a plurality of second vertical steel plates 14 set up in the top of the horizontal steel plate 10 of second and lie in between the adjacent longitudinal reinforcement 26 of 2 tip of second decking along the bridge width direction interval, still wear to be equipped with a plurality of horizontal reinforcements 25 that lie in 2 tip of second decking on the vertical steel plate 14 of second.
Specifically, cloud-shaped or corrugated structures are adopted on the sides, away from the bottom surface of the bridge deck, of the first vertical steel plate 13 and the second vertical steel plate 14.
A plurality of holes 30 are formed in the first vertical steel plate 13 and the second vertical steel plate 14 for penetrating the transverse steel bar 25 to form a PBL shear key structure.
Example 1
In order to replace the traditional processes of welding, pouring and the like on the wet type joint site, avoid a large amount of welding and pouring operations on the construction site and improve the connection stability of the bridge deck, referring to fig. 2 and 3, the first connecting plate 5 is also provided with a plurality of first double-nut high-strength bolts 17, and the first double-nut high-strength bolts 17 are arranged between the adjacent first vertical steel plates 13 and arranged between the adjacent transverse steel bars 25 at intervals along the bridge length direction;
still be equipped with a plurality of first vertical welding nails 18 on the first strap 6, first vertical welding nail 18 sets up between adjacent second vertical steel plate 14, and sets up between adjacent horizontal reinforcing bar 25 along the bridge length direction interval.
The second tab 7 comprises:
a third transverse steel plate 11 is provided,
a plurality of third vertical steel plates 15 which are arranged at the bottom of the third transverse steel plate 11 at intervals along the bridge width direction and are positioned between the adjacent longitudinal steel bars 26 at the end part of the second bridge deck plate 2, a plurality of transverse steel bars 25 positioned at the end part of the second bridge deck plate 2 are arranged on the third vertical steel plates 15 in a penetrating way,
a plurality of second double-nut high-strength bolts 19 are arranged between the adjacent first vertical steel plates 13 and arranged between the adjacent transverse steel bars 25 at intervals along the bridge length direction;
the second strap 8 includes:
a fourth transverse steel plate 12 which is provided with an extending lap joint part extending, lap-jointed and fixed to the third transverse steel plate 11 and is flush with the top surfaces of the first bridge deck plate 1 and the second bridge deck plate 2,
a plurality of fourth vertical steel plates 16 which are arranged at the bottom of the fourth transverse steel plate 12 at intervals along the bridge width direction and are positioned between adjacent longitudinal steel bars 26 at the end part of the first bridge deck 1, a plurality of transverse steel bars 25 positioned at the end part of the first bridge deck 1 are arranged on the fourth vertical steel plates 16 in a penetrating way,
and the second vertical welding nails 20 are arranged between the adjacent fourth vertical steel plates 16 and arranged between the adjacent transverse steel bars 25 at intervals along the bridge length direction.
Specifically, the first double-nut high-strength bolt 17 and the second vertical welding nail 20, and the second double-nut high-strength bolt 19 and the first vertical welding nail 18 are in staggered meshing and extend in opposite directions, so that the connection stability of the connecting piece on the bridge deck is enhanced.
In this embodiment, the stability of connection and the atress performance that shears between two connecting pieces and the decking can be improved through adopting above-mentioned each vertical welding nail, finally improves the stability of connection and the reliability between the decking.
Specifically, cloud-shaped or corrugated structures are adopted on the sides, away from the bottom surface of the bridge deck, of the third vertical steel plate 15 and the fourth vertical steel plate 16.
A plurality of holes 30 are formed in the third vertical steel plate 15 and the fourth vertical steel plate 16 for penetrating the transverse steel bar 25 to form a PBL shear key structure.
In order to replace the traditional processes of welding, pouring and the like on the wet joint site and avoid a large amount of welding and pouring operations on the construction site, a plurality of bolt holes 27 matched with the first double-nut high-strength bolts 17 are respectively formed in the extending and overlapping parts of the first transverse steel plate 9 and the second transverse steel plate 10, the top ends of the first double-nut high-strength bolts 17 sequentially penetrate through the bolt holes 27 in the extending and overlapping parts of the first transverse steel plate 9 and the second transverse steel plate 10 and are fixedly connected with the two sides of the extending and overlapping parts of the first transverse steel plate 9 and the second transverse steel plate 10 through nuts 31;
a plurality of bolt holes 27 matched with the second double-nut high-strength bolt 19 are respectively formed in the extending overlapping parts of the third transverse steel plate 11 and the fourth transverse steel plate 12, the top end of the second double-nut high-strength bolt 19 sequentially penetrates through the bolt holes 27 in the extending overlapping parts of the third transverse steel plate 11 and the fourth transverse steel plate 12, and the third transverse steel plate 11 and the fourth transverse steel plate 12 are fixedly connected with each other through nuts 31 on two sides of the extending overlapping parts.
In the embodiment, the bolt and the nut 31 are adopted for connection, the traditional welding process is replaced, the on-site assembling connection is facilitated, the construction is easy, and the popularization and the application are facilitated.
In some embodiments, the first vertical steel plate 13, the second vertical steel plate 14, the third vertical steel plate 15 and the fourth vertical steel plate 16 are located in the same straight direction or the same vertical plane along the bridge length direction;
the first double-nut high-strength bolt 17, the first vertical welding nail 18, the second double-nut high-strength bolt 19 and the second vertical welding nail 20 are located in the same straight line direction or the same vertical plane along the bridge length direction.
Example 2
In the present embodiment, referring to fig. 5 and 6, the specific structural configuration of the second tab 7 includes:
a third transverse steel plate 11 is provided,
a plurality of first inverted J-shaped slot steel plates 21 are provided with a plurality of inverted J-shaped slot holes 28 along the bridge width direction, the inverted J-shaped slot steel plates are fixedly arranged at the bottom of a third transverse steel plate 11 along the bridge length direction at intervals and are positioned between adjacent transverse steel bars 25 at the end part of a second bridge deck plate 2, a longitudinal steel bar 26 provided with a fastening nut 31 on the left side of the inverted J-shaped slot hole 28 is fixedly penetrated in a plurality of inverted J-shaped slot holes 28 positioned in the same straight line direction along the bridge length direction between the first inverted J-shaped slot steel plates 21,
a U-shaped slotted hole 29 that is used for wearing to establish horizontal reinforcing bar 25 is seted up to a plurality of first U channel steel sheets 23, and first U channel steel sheet 23 is fixed to be set up along the even interval of bridge width direction between adjacent first channel steel sheet 21 of falling J and between adjacent longitudinal reinforcement 26.
Specifically, the lower end of the inverted J-shaped slot 28 is open, and when in use, the longitudinal steel bar 26 can be placed into the slot from the lower end and moved to the top of the inverted J-shaped slot 28.
The longitudinal steel bar 26 is a ribbed steel bar or a ribbed steel bar, and a nut 31 is fixedly arranged on one side of the inverted J-shaped slot 28 close to the joint of the bridge deck slab and used for restraining and fixing.
In the present embodiment, the specific structural configuration of the second strap 8 includes:
a fourth transverse steel plate 12 provided with an extending lap joint part extending lap joint and fixed to the third transverse steel plate 11 and flush with the top surfaces of the first and second decking 1, 2,
a plurality of second inverted J-shaped channel steel plates 22 are provided with a plurality of inverted J-shaped slot holes 28 along the width direction of the bridge, the inverted J-shaped slot steel plates are fixedly arranged at the bottom of a fourth transverse steel plate 12 along the length direction of the bridge and are positioned between adjacent transverse steel bars 25 at the end part of the first bridge deck plate 1, a longitudinal steel bar 26 provided with a fastening nut 31 at the left side of the inverted J-shaped slot hole 28 is fixedly penetrated in a plurality of inverted J-shaped slot holes 28 positioned in the same straight line direction along the length direction of the bridge between the second inverted J-shaped channel steel plates 22,
and the plurality of second U-shaped groove steel plates 24 are provided with U-shaped groove holes 29 for penetrating through the transverse steel bars 25, and the second U-shaped groove steel plates 24 are fixedly arranged between the adjacent second inverted J-shaped channel steel plates 22 and between the adjacent longitudinal steel bars 26 at even intervals along the bridge width direction.
In order to facilitate on-site quick assembly construction, a plurality of bolt holes 27 for penetrating fastening bolts are respectively formed in the extending overlapping parts of the third transverse steel plate 11 and the fourth transverse steel plate 12, and the extending overlapping parts of the third transverse steel plate 11 and the fourth transverse steel plate 12 are connected through penetrating bolts 32 and fastening bolts by nuts 31.
The first vertical steel plates 13 and the second vertical steel plates 14 are butted one by one and are positioned in the same linear direction or the same vertical plane;
and/or the longitudinal steel bars 26 between the first bridge deck 1 and the second bridge deck 2 correspond to each other one by one and are located in the same linear direction, and the first U-shaped groove steel plates 23 and the second U-shaped groove steel plates 24 located between the adjacent longitudinal steel bars 26 are located in the same linear direction.
In addition, the embodiment of the invention also provides a construction method of the prefabricated bridge deck steel-concrete shear connector structure, which comprises the following steps:
embedding and fixing the first connecting plate 5 and the first butt strap 6 of the first connecting piece 3 at the bottom ends of the first bridge deck 1 and the second bridge deck 2 respectively by using welding nails;
embedding and fixing the second connecting plate 7 and the second butt strap 8 of the second connecting piece 4 on the top ends of the second bridge deck 2 and the first bridge deck 1 by using welding nails respectively;
in the embodiment 1, the end transverse steel bars 25 penetrate through the cloud-shaped perforated 30 steel plates, and after the longitudinal annular steel bars are arranged at intervals and bound with the transverse steel bars 25, concrete is poured;
in the embodiment 2, the longitudinal steel bars 26 are arranged in the inverted J-shaped slotted plates in a penetrating manner, the end transverse steel bars 25 are arranged in the U-shaped slotted hole 29 plates and the cloud-shaped perforated steel plates 30 in a penetrating manner, and concrete is poured after the reinforcement cage is bound;
hoisting and positioning the second bridge deck 2 embedded and fixed with the first butt strap 6 and the second butt strap 7 by using hoisting machinery;
and hoisting and positioning the first bridge deck 1 embedded and fixed with the second butt strap 8 and the first butt strap 5 by using a hoisting machine so as to align the end parts of the first bridge deck 1 and the second bridge deck 2, lap-jointing the first butt strap 6 at the bottom of the first butt strap 5 and lap-jointing the second butt strap 8 at the top of the second butt strap 7, adjusting bolt holes 27 at the aligned lap-jointed part, and fixedly connecting the first butt strap 1 and the second butt strap by using bolts.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (11)
1. A prefabricated bridge deck steel-concrete shear connector structure comprises a first bridge deck and a second bridge deck to be connected, and is characterized in that a first connecting piece and a second connecting piece are respectively connected to the bottom and the top between the first bridge deck and the second bridge deck;
the first connecting piece is provided with a first connecting plate and a first butt strap, wherein double nuts and high-strength bolts are embedded and fixed at the bottom of the end of the first bridge deck, welding nails are embedded and fixed at the bottom of the end of the second bridge deck, and the extending lap joint part of the first butt strap is bolted and fixed on the first connecting plate;
the second connecting piece is provided with a second connecting plate and welding nails, wherein the second connecting plate is embedded and fixed at the top of the second bridge deck plate end, the welding nails are embedded and fixed at the second butt strap at the top of the first bridge deck plate end, and the extending lap joint part of the second butt strap is bolted and fixed at the second connecting plate.
2. The precast bridge panel steel-concrete shear connector structure of claim 1, wherein the first slab comprises:
a first transverse steel plate which is provided with a first transverse steel plate,
the first vertical steel plates are arranged at the tops of the first transverse steel plates at intervals along the bridge width direction and positioned between the adjacent longitudinal steel bars at the end part of the first bridge deck plate, and the first vertical steel plates are also provided with a plurality of transverse steel bars at the end part of the first bridge deck plate in a penetrating manner;
the first strap includes:
a second transverse steel plate provided with an extending lap joint part extending and fixed to the first transverse steel plate and flush with the bottom surfaces of the first bridge deck plate and the second bridge deck plate,
a plurality of vertical steel sheets of second, along the bridge width direction interval set up in the horizontal steel sheet top of second just is located between the adjacent longitudinal reinforcement of second decking tip, still wear to be equipped with a plurality of being located on the vertical steel sheet of second the horizontal reinforcement of second decking tip.
3. The precast bridge deck steel-concrete shear connector structure according to claim 2, wherein a plurality of first double-nut high-strength bolts are further arranged on the first connecting plate, are arranged between the adjacent first vertical steel plates and are arranged between the adjacent transverse steel bars at intervals along the bridge length direction;
still be equipped with a plurality of first vertical welding nails on the first strap, first vertical welding nail sets up in adjacent between the vertical steel sheet of second, and set up in adjacent along the bridge length direction interval between the horizontal reinforcing bar.
4. The precast bridge panel steel-concrete shear connector structure of claim 3, wherein the second slab comprises:
a third transverse steel plate which is provided with a plurality of transverse steel plates,
a plurality of third vertical steel plates which are arranged at the bottom of the third transverse steel plates at intervals along the bridge width direction and are positioned between the adjacent longitudinal steel bars at the end part of the second bridge deck plate, a plurality of transverse steel bars positioned at the end part of the second bridge deck plate are also arranged on the third vertical steel plates in a penetrating way,
the second double-nut high-strength bolts are arranged between the adjacent third vertical steel plates and are arranged between the adjacent transverse steel bars at intervals along the bridge length direction;
the second strap includes:
a fourth transverse steel plate which is provided with an extending lap joint part extending, lap-jointed and fixed to the third transverse steel plate and is flush with the top surfaces of the first bridge deck plate and the second bridge deck plate,
a plurality of fourth vertical steel plates which are arranged at the bottom of the fourth transverse steel plates at intervals along the bridge width direction and are positioned between the adjacent longitudinal steel bars at the end part of the first bridge deck, a plurality of transverse steel bars positioned at the end part of the first bridge deck are also arranged on the fourth vertical steel plates in a penetrating way,
and the second vertical welding nails are arranged between the adjacent fourth vertical steel plates and are arranged between the adjacent transverse steel bars at intervals along the bridge length direction.
5. The precast bridge panel steel-concrete shear connector structure of claim 4, wherein the first double-nut high-strength bolt and the second vertical welding nail, and the second double-nut high-strength bolt and the first vertical welding nail are in staggered mesh and extend oppositely.
6. The precast bridge panel steel-concrete shear connector structure of claim 5, wherein a plurality of bolt holes matched with the first double-nut high-strength bolt are respectively formed on the extending overlapping parts of the first transverse steel plate and the second transverse steel plate, and the top ends of the first double-nut high-strength bolt sequentially pass through the bolt holes on the extending overlapping parts of the first transverse steel plate and the second transverse steel plate and are fixedly connected with both sides of the extending overlapping parts of the first transverse steel plate and the second transverse steel plate through nuts;
the third transverse steel plate and the extension lap joint part of the fourth transverse steel plate are respectively provided with a plurality of bolt holes matched with the second double-nut high-strength bolt, the top end of the double-nut high-strength bolt sequentially penetrates through the bolt holes in the third transverse steel plate and the extension lap joint part of the fourth transverse steel plate, and the third transverse steel plate and the extension lap joint part of the fourth transverse steel plate are connected through nut fastening.
7. The precast bridge deck steel-concrete shear connector structure of claim 6, wherein the first, second, third and fourth vertical steel plates are located in the same straight direction or the same vertical plane therebetween along the bridge length direction;
the first double-nut high-strength bolt, the second vertical welding nail, the second double-nut high-strength bolt and the first vertical welding nail are located in the same straight line direction or the same vertical plane along the bridge length direction.
8. The precast bridge panel steel-concrete shear connector structure of claim 2, wherein the second slab comprises:
a third transverse steel plate which is provided with a plurality of transverse steel plates,
a plurality of first inverted J-shaped channel steel plates are provided with a plurality of inverted J-shaped slot holes along the bridge width direction, the inverted J-shaped channel steel plates are fixedly arranged at the bottom of the third transverse steel plate along the bridge length direction at intervals and are positioned between the adjacent transverse steel bars at the end part of the second bridge deck plate, a longitudinal steel bar provided with a fastening nut on the left side of the inverted J-shaped slot hole is penetrated and fixed in a plurality of inverted J-shaped slot holes positioned in the same straight line direction along the bridge length direction between the first inverted J-shaped channel steel plates,
the first U-shaped groove steel plates are provided with U-shaped groove holes for penetrating the transverse steel bars, and the first U-shaped groove steel plates are fixedly arranged between the adjacent first inverted J-shaped channel steel plates and between the adjacent longitudinal steel bars at uniform intervals along the bridge width direction;
the second strap includes:
a fourth transverse steel plate which is provided with an extending lap joint part extending, lap-jointed and fixed towards the third transverse steel plate and is flush with the top surfaces of the first bridge deck plate and the second bridge deck plate,
a plurality of second inverted J-shaped slot steel plates are provided with a plurality of inverted J-shaped slots along the width direction of the bridge, the inverted J-shaped channel steel plates are fixedly arranged at the bottom of the fourth transverse steel plate along the length direction of the bridge and are positioned between the adjacent transverse steel bars at the end part of the first bridge deck plate, a longitudinal steel bar provided with a fastening nut on the left side of the inverted J-shaped slot is fixedly penetrated in the inverted J-shaped slots which are positioned in the same straight line direction along the length direction of the bridge between the second inverted J-shaped channel steel plates,
and the second U-shaped groove steel plates are arranged on the longitudinal steel bars in a penetrating mode, and are fixedly arranged between the second inverted J-shaped channel steel plates and between the longitudinal steel bars at intervals along the bridge width direction.
9. The precast bridge panel steel-concrete shear connector structure of claim 8, wherein the extended overlapping portions of the third transverse steel plate and the fourth transverse steel plate are respectively provided with a plurality of bolt holes for passing fastening bolts, and the extended overlapping portions of the third transverse steel plate and the fourth transverse steel plate are fastened and connected by the fastening bolts.
10. The precast bridge panel steel-concrete shear connector structure of claim 9, wherein the first vertical steel plates and the second vertical steel plates are butted one to one and are located in the same linear direction or the same vertical plane;
and/or the presence of a gas in the gas,
the first bridge deck plate and the second bridge deck plate are arranged between the first bridge deck plate and the second bridge deck plate, the longitudinal steel bars are in one-to-one correspondence and are located in the same straight line direction, and the first U-shaped groove steel plates and the second U-shaped groove steel plates which are located between the adjacent longitudinal steel bars are located in the same straight line direction.
11. A construction method of a prefabricated bridge deck steel-concrete shear connector structure according to any one of claims 1 to 10, comprising the steps of:
embedding and fixing a first connecting plate and a first butt strap of a first connecting piece into a reinforcing mesh surrounded by longitudinal steel bars and transverse steel bars and prefabricating and pouring concrete on the bottom ends of a first bridge deck and a second bridge deck by using double-nut high-strength bolts and vertical welding nails respectively;
embedding and fixing a second connecting plate and a second butt strap of a second connecting piece into a reinforcing mesh surrounded by longitudinal steel bars and transverse steel bars on the top ends of a second bridge deck plate and a first bridge deck plate by using double-nut high-strength bolts and vertical welding nails respectively, and prefabricating and pouring concrete;
hoisting and positioning a second bridge deck embedded and fixed with a first butt strap and a second butt strap by using hoisting machinery;
and hoisting and positioning the first bridge deck embedded and fixed with the second butt strap and the first butt strap by using hoisting machinery so as to align the end parts of the first bridge deck and the second bridge deck, lap-joint the first butt strap at the bottom of the first butt strap and lap-joint the second butt strap at the top of the second butt strap, adjust bolt holes at the aligned lap-joint part, and fixedly connect the first butt strap and the second butt strap through bolts.
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| CN202211045256.5A CN115305813A (en) | 2022-08-30 | 2022-08-30 | Prefabricated bridge deck steel-concrete shear connector structure and construction method thereof |
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| CN202211045256.5A CN115305813A (en) | 2022-08-30 | 2022-08-30 | Prefabricated bridge deck steel-concrete shear connector structure and construction method thereof |
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