A connecting device for bridge construction and a bridge construction method

Abstract

The application relates to a connecting device for bridge construction and a bridge construction method, which comprises a prefabricated plate and a connecting assembly; the prefabricated plate comprises a main body, side connecting ribs, end connecting ribs, an upper connecting plate and a lower connecting plate; the two sides of the main body are provided with the side connecting ribs extending to the two sides, and the side connecting ribs on the two sides are arranged side by side and staggered; corresponding reinforcing steel bar holes are arranged on the upper connecting plate and the lower connecting plate; the connecting assembly is used for connecting the staggered side connecting ribs, and comprises an upper connecting seat, a fastening bolt, a lower connecting seat, a first clamping seat, a second clamping seat and a damper; the upper connecting seat and the lower connecting seat are correspondingly arranged, the fastening bolt penetrates through the upper connecting seat and the lower connecting seat, and the upper connecting seat and the lower connecting seat can be combined and connected together; the first clamping seat and the second clamping seat are both provided with sliding blocks, and the sliding blocks are provided with the dampers between the upper connecting seat and the lower connecting seat. The application greatly simplifies the on-site construction process, reduces the on-site wet work, and improves the stability of the bridge deck structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering, in particular to a connecting device for bridge construction and a bridge construction method. BACKGROUND

[0002] In the process of bridge construction, bridge deck pavement, as an important part of bridge structure, directly bears various dynamic loads in the process of vehicle driving and plays multiple roles of protecting the bridge deck from direct wear and tear, dispersing wheel pressure and providing a safe and smooth driving surface. In the current wave of promoting prefabricated buildings, although prefabricated technology has made significant progress in the main girder and substructure of the bridge, it has effectively improved the construction efficiency and construction quality.

[0003] However, in the field of bridge deck pavement, the traditional cast-in-place method still dominates, and this situation needs to be changed. Cast-in-place bridge deck pavement not only requires a large number of construction equipment, including mixers, pump trucks, vibrators, etc., increasing the complexity and cost of on-site construction, but also its construction progress is easily affected by weather, material supply and construction personnel's technical proficiency, etc. Multiple factors, making it difficult to accurately control the construction period and the engineering quality is also subject to great uncertainty. Therefore, strengthening the research and application of prefabricated bridge deck pavement technology, developing new pavement materials and systems that are light, high-strength and easy to install, has become a key direction to improve the overall efficiency of bridge construction, shorten the construction period and ensure the engineering quality, and has important significance for promoting the sustainable development of the bridge engineering industry.

[0004] In the process of prefabricated slab bridge deck pavement, fixed connection and telescopic movable connection are involved, and the current connection method has the problems of integrity and low construction efficiency. Therefore, it is necessary to study a connecting device for bridge construction and a bridge construction method. SUMMARY

[0005] In view of this, the purpose of the present application is to provide a connecting device for bridge construction and a bridge construction method, which effectively solves the problems of low construction efficiency and complex connection structure of the existing prefabricated slab bridge deck pavement structure.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a connecting device for bridge construction, comprising a precast slab and connecting components; the precast slab includes a main body, side connecting bars, end connecting bars, an upper connecting plate, and a lower connecting plate; side connecting bars extending to both sides are provided on both sides of the main body, and the side connecting bars on both sides are arranged side by side with staggered positioning; the upper connecting plate and the lower connecting plate are respectively fixed to the upper part of one side and the lower part of the opposite side of the main body, and corresponding reinforcing bar holes are provided on both the upper connecting plate and the lower connecting plate; positioning holes and positioning blocks are respectively provided on the upper connecting plate and the lower connecting plate; a locking block is provided on one side of the main body, and a locking groove is provided on the opposite side of the main body, the end connecting bars pass through the positioning block and the locking groove, and a clearance groove for avoiding the end connecting bars is provided on the locking block;

[0007] The connecting assembly is used to connect misaligned side connecting ribs, and includes an upper connecting seat, a fastening bolt, a lower connecting seat, a first clamp, a second clamp, and a damper. The upper and lower connecting seats are arranged correspondingly, and the fastening bolt passes through the upper and lower connecting seats, allowing the upper and lower connecting seats to be combined together. A slider is provided on both the first and second clamps, and a damper is provided between the slider and the upper and lower connecting seats. Clamping grooves adapted to the side connecting ribs are provided on the first and second clamps. The upper first clamp and the lower first clamp correspond to each other, and the upper and lower clamping grooves form a closed clamping body.

[0008] Furthermore, both the upper and lower connecting seats are fixed with sliding rods, and the first and second clamps are respectively fitted onto the sliding rods via corresponding sliders.

[0009] Furthermore, a grouting hole is provided on the upper connecting plate. When the side connecting rib is installed in the clearance groove, there is a cavity between the upper connecting plate and the lower connecting plate, and the cavity communicates with the grouting hole.

[0010] Furthermore, the outer periphery of the positioning seat is provided with ribs, so that there is a gap between the positioning seat and the positioning hole.

[0011] Furthermore, the reinforcing bar holes are located on both sides of the upper and lower connecting seats, and the end connecting bars are located in the middle area of ​​the reinforcing bar holes on both sides.

[0012] Furthermore, the damper is a viscous damper.

[0013] Furthermore, the clamping groove has a semi-circular structure, and a friction surface is provided inside the semi-circular groove; the upper and lower clamping grooves are joined together to form a circular clamping body that is compatible with the side connecting rib.

[0014] Furthermore, the upper first clamp and the lower first clamp are provided with corresponding ear plates on their sides, and the ear plates are connected by bolts for reinforcement.

[0015] Further, the center of the upper connecting seat is provided with a countersunk hole, and the end nut of the bolt is in the countersunk hole.

[0016] The construction method of the connecting device for bridge construction comprises the following steps:

[0017] Step one, during the construction of the bridge deck, a plurality of embedded bars and positioning points are formed on the bridge deck according to the design drawing; then the bridge deck is leveled and cleaned;

[0018] Step two, hoist the prefabricated plate into the field, lower the prefabricated plate according to the positioning points, and make the steel bar holes of the lower connecting plate correspond to the embedded bars; and adjust the position of the prefabricated plate;

[0019] Step three, hoist the next prefabricated plate into the field, gradually lower it from top to bottom, so that the upper connecting plate steel bar hole of the prefabricated plate corresponds to the embedded bar, and the clamping block of the prefabricated plate corresponds to the clamping groove constructed in step two, so that the clamping block is clamped on the end connecting bar; at this time, the positioning block is in the positioning hole;

[0020] Step four, then buckle the positioning seat on the positioning block;

[0021] Step five, repeat steps two and three;

[0022] Step six, inject mortar into the prefabricated plate connecting part through the grouting hole until it naturally solidifies, so that the gap between the upper connecting plate and the lower connecting plate is filled with mortar;

[0023] Step seven, repeat steps two to six to construct the next row of prefabricated plates, so that there is a expansion joint between the prefabricated plates on both sides;

[0024] Step eight, assemble the connecting assembly on the side connecting bars on both sides;

[0025] Step nine, fill the expansion joint with shock-absorbing material.

[0026] The beneficial effects of the above technical solution are: based on the characteristics of bridge construction, expansion joints need to be formed on the bridge deck, so the connection structure of the prefabricated plate involves fixed connection and movable expansion connection. In order to ensure the connection effect, the end of the prefabricated plate is provided with an upper connecting plate and a lower connecting plate, the upper connecting plate and the lower connecting plate are provided with corresponding steel bar holes, the embedded bars are pre-constructed on the main body of the bridge deck, the steel bar holes are corresponded to the embedded bars, so that the prefabricated plate can be more reliably assembled on the bridge deck, and the structure is more stable. In order to further improve the connection strength between the upper connecting plate and the lower connecting plate, i.e. between the first prefabricated plate and the second prefabricated plate, the positioning block is arranged on the lower connecting plate, the end connecting bar is assembled on the positioning block, and further passes through the clamping groove. The built-in bar is configured for the connection part of the two prefabricated plates, the built-in bar is combined with the newly injected concrete by pouring concrete into the gap, and the connection strength of the fixed connection part is further improved.

[0027] For the two sides of the movable telescopic connection, the application is configured with side connecting ribs on both sides of the main body, and the side connecting ribs on both sides are arranged staggered and combined and connected through the connecting assembly. In the specific structure, the connecting rib is divided into upper and lower two part structures, the two part structures can be combined through the fastening bolt, and the clamping main bodies capable of clamping the side connecting rib are formed on both sides respectively, the two part clamping main bodies can slide relative to the slide rod, and the energy is consumed through the extrusion damper, so that the telescopic energy dissipation purpose is achieved.

[0028] The application greatly simplifies the on-site construction process, reduces on-site wet work such as concrete pouring, thereby improving the construction efficiency and shortening the construction period. Through the accurate cooperation of the positioning hole, the positioning block and the positioning seat, the precise butt joint between the prefabricated plates is ensured, the construction error is reduced, the loosening or falling of the prefabricated plates in the long-term use process is effectively prevented, and the safety of the bridge use is improved. Meanwhile, the grouting hole enables the connection to be filled with grouting mortar, thereby enhancing the integrity and sealing of the connection and improving the construction quality. Due to the modular design of the connecting assembly, the connecting assembly can be more conveniently disassembled and reinstalled during the later maintenance or replacement, thereby reducing the maintenance cost and time; the on-site noise, dust and other pollution are reduced, the influence on the surrounding environment is small, which is beneficial to environmental protection and civilized construction. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a structural schematic view of the prefabricated plate;

[0030] Figure 2 It is a front view structural schematic view of Figure 1 ;

[0031] Figure 3 It is a top view structural schematic view of Figure 1 ;

[0032] Figure 4 It is a bottom view structural schematic view of Figure 1 ;

[0033] Figure 5 It is a combined state view of the application;

[0034] Figure 6 It is a telescopic movable connection structure schematic view of the application;

[0035] Figure 7 It is a structural schematic view of the connecting assembly;

[0036] Figure 8 It is a side view structural schematic view of the connecting assembly;

[0037] Figure 9 It is a combined state view of the connecting assembly.

[0038] Fig. 1 - main body, 2 - upper connecting plate, 3 - lower connecting plate, 4 - steel bar hole, 5 - positioning hole, 6 - clamping block, 7 - avoiding groove, 8 - positioning block, 9 - end connecting bar, 10 - clamping groove, 11 - side connecting bar, 12 - grouting hole, 13 - upper connecting seat, 14 - lower connecting seat, 15 - fastening bolt, 16 - first clamping seat, 17 - second clamping seat, 18 - sliding rod, 19 - limiting plate, 20 - sliding block, 21 - damper, 22 - counterbore, 23 - ear plate. DETAILED DESCRIPTION

[0039] The application will be further described in detail below in combination with the drawings and specific embodiments:

[0040] Embodiment 1 aims to provide a connecting device for bridge construction and a bridge construction method, mainly used for bridge deck prefabricated paving operation in the bridge construction process. In view of the weak connection strength of the existing prefabricated plate structure and the complex structure construction, the embodiment provides a modular prefabricated plate, which provides a bridge deck paving connecting device for bridge deck prefabricated paving.

[0041] As shown in particular Figures 1-4 A connecting device for bridge construction, comprising a prefabricated plate and a connecting assembly; the prefabricated plate in this embodiment is a reinforced concrete prefabricated part, which has a steel reinforcement frame inside, and is prefabricated and processed in a prefabrication factory. The end of the prefabricated plate can be spliced and combined in structure to realize fixed combined connection, and the side surface is combined and connected through the connecting assembly to realize movable damping expansion connection.

[0042] The specific prefabricated plate comprises a main body 1, a side connecting bar 11, an end connecting bar 9, an upper connecting plate 2 and a lower connecting plate 3; the main body 1 is provided with side connecting bars 11 extending to both sides, and the side connecting bars 11 on both sides are arranged side by side and staggered; in the implementation, the main body 1 has a steel reinforcement frame inside, and the side connecting bars 11 are tied on the steel reinforcement frame and extend to the outside of the formwork during prefabrication. After the upper and lower forms are demoulded, the prefabricated plate main body 1 is formed.

[0043] Corresponding steel bar holes 4 are arranged on the upper connecting plate 2 and the lower connecting plate 3, the steel bar holes 4 are arranged on both sides of the upper connecting seat and the lower connecting seat, specifically, two groups of steel bar holes are arranged on both sides of the positioning block and the positioning hole, each group is provided with four steel bar holes, the end connecting bar 9 is arranged in the middle region of the two steel bar holes 4, the embedded bar is assembled in the steel bar hole 4, and the side connecting bar 11 is in the embedded bar. By limiting the upper connecting plate 2 and the lower connecting plate 3, the structure is stable, and the embedded plate is rooted on the bridge deck foundation.

[0044] In structure, the upper connecting plate 2 and the lower connecting plate 3 are fixed on the upper side and the lower opposite side of the main body 1 respectively, and the upper and lower positions in the embodiment are the positions in the use state, that is, the upper connecting plate 2 and the lower connecting plate 3 are respectively at the two ends of the main body 1, and they are standard parts, and in splicing, the upper connecting plate 2 and the lower connecting plate 3 correspond and are jointly sleeved on the embedded steel bar through the steel bar hole.

[0045] In order to ensure the structural stability of the splicing position of the two prefabricated plates, the positioning hole 5 and the positioning block 8 are arranged on the upper connecting plate 2 and the lower connecting plate 3 respectively, the positioning block 8 is fixed on the lower connecting plate 3, and the structure is a block structure in the direction, and the positioning hole 5 is arranged on the upper connecting plate 2 and corresponds to the positioning block 8.

[0046] In combination, as shown in Figures 5-6 , the clamping block 6 is arranged on one side of the main body 1, the clamping groove 10 is arranged on the opposite side of the main body 1, the end connecting steel bar 9 penetrates the positioning block 8 and the clamping groove 10, and the avoiding groove 7 which avoids the end connecting steel bar 9 is arranged on the clamping block 6; the avoiding groove 7 is an opening downward structure, and in combination, the two prefabricated plates are combined from top to bottom, the upper connecting plate 2 is seated on the lower connecting plate 3 from top to bottom, at this time, the avoiding groove 7 is seated on the end connecting steel bar 9 from top to bottom, the clamping block 6 is in the clamping groove 10, and the positioning block 8 is in the positioning hole 5; the structure of the positioning hole 5 and the positioning block 8 in the embodiment is a spacing matching structure.

[0047] The grouting hole 12 is arranged on the upper connecting plate 2, and when the side connecting steel bar 11 is clamped in the avoiding groove 7, there is a cavity between the upper connecting plate 2 and the lower connecting plate 3, the cavity is communicated with the grouting hole, and the cavity is convenient for injecting concrete through the grouting hole.

[0048] After the two prefabricated plates are combined in the embodiment, the concrete mortar is injected between the upper connecting plate 2 and the lower connecting plate 3, so that the mortar fills the gap between the two prefabricated plates, that is, the concrete mortar fills the gap between the upper connecting plate 2 and the lower connecting plate 3, and then enters the gap between the clamping groove 10 from the avoiding groove 7, and finally the gap between the positioning block 8 and the positioning hole 5 is filled, and after being leveled, it is solidified to realize the fixed splicing purpose of the prefabricated plate.

[0049] In order to realize the movable telescopic connection of the adjacent prefabricated plates, the connecting assembly is used to realize the movable telescopic connection of the adjacent prefabricated plates in the embodiment, and the side connecting steel bar 11 which is arranged on the two sides of the prefabricated plate and is staggered is connected by the connecting assembly, and the basic principle is to complete the clamping of one side connecting steel bar 11 through the corresponding clamping seat, and the energy dissipation damping structure is arranged between the two clamping seats to realize the movable telescopic connection purpose of the adjacent prefabricated plates.

[0050] In the specific implementation structure, as Figures 7-8The connecting assembly comprises an upper connecting seat 13, a fastening bolt 15, a lower connecting seat 14, a slide rod 18, a first clamping seat 16, a second clamping seat 17 and dampers 21. The upper connecting seat 13 and the lower connecting seat 14 are arranged correspondingly, the fastening bolt 15 penetrates through the upper connecting seat 13 and the lower connecting seat 14 and can make the upper connecting seat 13 and the lower connecting seat 14 combinedly connected together. Through the structure, the loosening and releasing of the upper and lower clamping bodies 1 is realized, that is, the clamping bodies 1 are clamped between the side connecting ribs 11 in the loosened state, and the clamping bodies 1 are clamped and fixedly connected with the side connecting ribs 11 in the clamped state.

[0051] The slide rod 18 is fixed on the upper connecting seat 13 and the lower connecting seat 14, the first clamping seat 16 and the second clamping seat 17 are respectively sleeved on the slide rod 18 through corresponding slide blocks, a limiting plate 19 is arranged at the end of the slide rod 18, the two slide rods 18 are connected together, the slide rod 18 provides positioning for the sliding of the slide blocks, and the dampers 21 are arranged between the slide blocks and the connecting seats in the middle part, that is, between the slide blocks and the upper connecting seat 13 and between the slide blocks and the lower connecting seat 14. In the implementation, the dampers 21 can be viscous dampers 21. Through the slide rod 18, the slide blocks 20 overcome the resistance of the dampers 21 through displacement during the sliding along the slide rod 18, and the purpose of energy dissipation is realized.

[0052] Clamping grooves adapted to the side connecting ribs 11 are arranged on the first clamping seat 16 and the second clamping seat 17. The first clamping seat 16 at the upper part and the first clamping seat 16 at the lower part correspond to each other, and the upper and lower clamping grooves form a closed clamping body. In the process that the upper connecting seat 13 and the lower connecting seat 14 in the middle part are connected together, the clamping grooves are close to each other and form the clamping body of the side connecting ribs 11. In order to improve the clamping effect, the clamping grooves are in the semicircular structure in the embodiment, the upper and lower clamping grooves are butted to form a circular clamping body adapted to the side connecting ribs 11, and a friction surface is arranged in the semicircular groove to realize the clamping and fixing effect of the clamping groove and the side connecting rib 11.

[0053] The embodiment provides a construction method of the connecting device for bridge construction.

[0054] Step one, when the bridge deck is constructed, a plurality of embedded ribs and positioning points are formed on the bridge deck according to the design drawing; then the bridge deck is leveled and cleaned;

[0055] Step two, hoist the prefabricated plate into the field, lower the prefabricated plate according to the positioning points, make the steel bar holes 4 of the lower connecting plates 3 correspond to the embedded ribs, and adjust the position of the prefabricated plate;

[0056] Step three, hoist the next prefabricated plate into the field, gradually lower the prefabricated plate from top to bottom, make the steel bar holes 4 of the upper connecting plates 2 of the prefabricated plate correspond to the embedded ribs, make the clamping blocks 6 of the prefabricated plate correspond to the clamping grooves 10 constructed in step two, and make the clamping blocks 6 clamped on the end connecting ribs 9; at this time, the positioning blocks 8 are in the positioning holes 5.

[0057] Step four, then install the positioning seat buckle on the positioning block 8;

[0058] Step five, repeat steps two and three;

[0059] Step six, inject mortar into the precast slab joint through the grouting hole until it naturally solidifies, filling the gap between the upper connecting plate 2 and the lower connecting plate 3 with mortar;

[0060] Step seven, repeat steps two to six to construct the next row of precast slabs, leaving expansion joints between the precast slabs on both sides;

[0061] Step eight, assemble the connecting components on the side connecting bars 11 on both sides;

[0062] Step nine, fill the expansion joint with shock-absorbing material.

[0063] This embodiment significantly improves the connection stability between the precast slab and the bridge deck body 1 by providing upper and lower connecting plates 2 and 3 at the ends of the precast slab and designing corresponding steel bar holes 4 that match the pre-embedded bars of the bridge deck body 1, making the installation of precast slabs on the bridge deck more reliable and reducing safety hazards caused by insecure connections.

[0064] By configuring positioning blocks 8 on the lower connecting plate 3 and using the structure of end connecting bars 9 and embedded bars in combination with the method of pouring concrete, the connection strength between precast slabs is further enhanced. The close combination of embedded bars and concrete not only improves the overall stiffness of the connection but also enhances its shear and tensile resistance, thereby prolonging the service life of the bridge.

[0065] To meet the needs of bridge deck expansion joints, this embodiment configures side connecting bars 11 on both sides of the body 1 and uses a staggered design and connecting components to achieve movable expansion connection. This design allows the bridge deck to expand and contract to a certain extent under the effects of temperature changes, vehicle loads, and other factors, effectively preventing the bridge deck from cracking or being damaged due to thermal expansion and contraction or load effects.

[0066] Enhance the energy dissipation effect of expansion: By designing a clamping body 1 that can slide relative to the slide bar 18 and setting an extrusion damper 21 in it, the invention not only achieves expansion function but also has good energy dissipation effect. When the bridge deck expands, the extrusion damper 21 can absorb and consume part of the energy, reducing the impact and vibration on the bridge structure and improving the comfort and safety of the bridge.

[0067] The connection structure design of this embodiment is reasonable, the construction steps are clear, and it is convenient for on-site operation. Through standardized production and on-site assembly of precast components, construction efficiency can be greatly improved, construction period can be shortened, and construction cost can be reduced.

[0068] Embodiment 2, this embodiment further illustrates the movable telescopic connection structure of the prefabricated slab.

[0069] As Figure 9 As shown in the middle, the side of the upper first clamp seat 16 and the lower first clamp seat 16 is provided with corresponding lug plates 23, the lug plates are connected through bolt reinforcement, the clamping and fixing effect is improved from both sides; meanwhile, the center of the upper connecting seat 13 is provided with a countersunk hole 22, the end nut of the fastening bolt 15 is in the countersunk hole, the fastening bolt 15 is prevented from being too long.

[0070] The above-mentioned embodiments of the present application do not constitute a limitation on the protection scope of the present application, the basic concept of the present application is that the end part of the prefabricated slab can be spliced and combined, the fixed combined connection of the end part is realized, the combined connection of the side part through the connecting assembly is realized, the movable damping telescopic connection is realized. Any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the claims of the present application.

Claims

1. A connecting device for bridge construction, characterized in that: The utility model relates to a prefabricated slab and connecting assembly, the prefabricated slab comprises a main body, side connecting ribs, end connecting ribs, upper connecting plates and lower connecting plates, the side connecting ribs extend to both sides of the main body, and the side connecting ribs on both sides are arranged side by side and staggered, the upper connecting plates and the lower connecting plates are fixed on the upper part of one side and the lower part of the opposite side of the main body respectively, and corresponding reinforcing steel bar holes are arranged on the upper connecting plates and the lower connecting plates, positioning holes and positioning blocks are arranged on the upper connecting plates and the lower connecting plates respectively, a clamping block is arranged on one side of the main body, a clamping groove is arranged on the opposite side of the main body, the end connecting ribs pass through the positioning blocks and the clamping groove, and an avoiding groove for avoiding the end connecting ribs is arranged on the clamping block. The connecting assembly is used for connecting the staggered side connecting ribs and comprises upper connecting seats, fastening bolts, lower connecting seats, first clamping seats, second clamping seats and dampers, the upper connecting seats and the lower connecting seats are arranged correspondingly, the fastening bolts pass through the upper connecting seats and the lower connecting seats and can make the upper connecting seats and the lower connecting seats combinedly connected together, the first clamping seats and the second clamping seats are provided with sliding blocks, the sliding blocks are provided with the dampers between the upper connecting seats and the lower connecting seats, the first clamping seats and the second clamping seats are provided with clamping grooves matched with the side connecting ribs, the upper first clamping seat and the lower first clamping seat are corresponding, and the upper and lower clamping grooves form a closed clamping body. Sliding rods are fixed on the upper connecting seats and the lower connecting seats, and the first clamping seats and the second clamping seats are adaptively and slidably sleeved on the sliding rods through corresponding sliding blocks. A grouting hole is formed in the upper connecting plate, and when the side connecting ribs are clamped in the avoiding grooves, a cavity exists between the upper connecting plate and the lower connecting plate, and the cavity is communicated with the grouting hole. Ribs are arranged on the outer periphery of the positioning blocks, so that a gap exists between the positioning blocks and the positioning holes.

2. The connecting device for bridge construction according to claim 1, characterized in that: The reinforcing steel bar holes are arranged on both sides of the upper connecting seats and the lower connecting seats, and the end connecting ribs are arranged in the middle region of the reinforcing steel bar holes.

3. The connecting device for bridge construction according to claim 1, characterized in that: The damper is a viscous damper.

4. The connecting device for bridge construction according to claim 1, characterized in that: The clamping grooves are semicircular in structure, and a friction surface is arranged in the semicircular groove, and the upper and lower clamping grooves are butted to form a circular clamping body matched with the side connecting ribs.

5. The connecting device for bridge construction according to claim 1, characterized in that: Ears are arranged on the side surfaces of the upper first clamping seat and the lower first clamping seat, and the ears are connected through bolts.

6. The connecting device for bridge construction according to claim 1, characterized in that: A countersunk hole is arranged in the center of the upper connecting seat, and the end nut of the bolt is in the countersunk hole.

7. The construction method of the connecting device for a bridge construction as claimed in claim 1, characterized in that: The utility model comprises the following steps: In step one, a plurality of embedded reinforcing steel bars and positioning points are formed on the bridge deck according to the design drawing during the construction of the bridge deck, and then the bridge deck is leveled and cleaned; In step two, the prefabricated slab is hoisted into the field, the prefabricated slab is lowered according to the positioning points, the reinforcing steel bar holes of the lower connecting plate are matched with the embedded reinforcing steel bars, and the position of the prefabricated slab is adjusted; In step three, the next prefabricated slab is hoisted into the field, and the prefabricated slab is gradually lowered from top to bottom, so that the reinforcing steel bar holes of the upper connecting plate of the prefabricated slab are matched with the embedded reinforcing steel bars, the clamping block of the prefabricated slab is matched with the clamping groove constructed in step two, the clamping block is clamped on the end connecting rib, and the positioning block is in the positioning hole at this time; In step four, the positioning seat is buckled on the positioning block; In step five, steps two and three are repeated; In step six, the prefabricated slab connecting part is injected with mortar through the grouting hole until the mortar is naturally solidified, so that the gap between the upper connecting plate and the lower connecting plate is filled with mortar; Step seven, repeat steps two to six to construct the next precast slab, so that there is a contraction joint between the two precast slabs; Step eight, assemble the connecting components on the side connecting bars on both sides; Step nine, fill the contraction joint with shock-absorbing material.

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