Reinforcing device for bridge deck slab structure welding seam

Abstract

The invention belongs to the technical field of bridge engineering, and discloses a reinforcing device for bridge deck slab structure weld joints, which comprises a plurality of bridge deck slab bodies, welding joints are arranged among the bridge deck slab bodies, I-shaped steel beams are welded at the bottoms of the bridge deck slab bodies corresponding to the welding joints, and the I-shaped steel beams are welded at the bottoms of the bridge deck slab bodies. Through cooperation of structures such as a rotating plate, a moving plate and a push rod, the bearing stability of an I-shaped steel beam on a bridge deck slab body is further enhanced, all the opening stiffening plates are connected through the rotating plate, the distance between the opening stiffening plates can be synchronously adjusted at equal intervals, scaling movement is conducted, and when the distance between the opening stiffening plates is reduced, the opening stiffening plates can be fixed. The number of the opening stiffening plates is properly increased, the bearing capacity of the corresponding bridge deck slab body is higher, meanwhile, the spring in the movable plate can be driven to extrude the push rod, and therefore the extrusion force of the extrusion plate and the I-shaped steel beam is in positive correlation with the density of the opening stiffening plates, and the supporting effect is enhanced.

Description

Technical Field

[0001] This invention belongs to the field of bridge engineering technology, specifically a reinforcement device for welded joints in bridge deck structures. Background Technology

[0002] Under repeated vehicle loads, fatigue cracks are prone to develop at the weld joints of steel bridge decks. Crack propagation weakens the structural load-bearing capacity, leading to damage to the bridge deck pavement, sludge seeping into the steel box girder, causing corrosion and water accumulation, further reducing durability. In addition, high-temperature welding causes a decline in the microstructure properties around the weld joint, which may induce new cracks. Residual stress exists inside the welded structure, which, combined with other forces, may lead to cracking. Furthermore, actual traffic flow may far exceed design expectations, resulting in excessive stress amplitude on the weld joints and accelerated crack propagation. Therefore, reinforcement devices are needed to strengthen the weld joints to increase the service life of the bridge deck.

[0003] The prior art document, CN223446020U, discloses a stiffening rib weld reinforcement structure for orthotropic steel bridge decks, belonging to the field of bridge engineering technology. It fully utilizes the high strength, corrosion resistance, and lightweight properties of FRP materials, featuring a simple structural form and light weight. By attaching FRP profiles to both sides of the weld of the stiffening rib of the orthotropic steel bridge deck, the stiffening rib of the weld, which may cause fatigue cracks, is connected to the steel bridge deck as a whole through the FRP profile. This enhances the overall load-bearing capacity and fatigue resistance of the structural components, ensuring the reliability of the repair. It also features easy construction and a short construction period, reducing the impact of repair and reinforcement work on road traffic operations.

[0004] Although the above-mentioned device enhances the overall load-bearing capacity and fatigue resistance of the structural components by attaching FRP profiles to both sides of the weld seams of the stiffening ribs of the steel bridge deck, thus connecting the stiffening ribs of the weld seams, which may cause fatigue cracks, to the steel bridge deck through the FRP profiles, the stress concentration problem at the weld seams has not been addressed in detail. This may make the joints at the weld seams of the deck prone to cracking, affecting the service life of the deck. Summary of the Invention

[0005] The purpose of this invention is to provide a reinforcement device for welded joints in bridge deck structures, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a reinforcement device for welded joints in bridge deck structures, comprising a bridge deck body, wherein the bridge deck body is provided with several sections, and welded joints are formed between them; I-beams are welded to the bottom of the bridge deck body at the welded joints; and several open stiffening plates are slidably abutted against both sides of the I-beams; further comprising:

[0007] An adaptive adjustment mechanism is located on the open stiffening plate;

[0008] A stress-dispersing mechanism is located on the I-beam;

[0009] The adaptive adjustment mechanism includes a fixed block that penetrates the middle of the open stiffening plate. Rotating plates are rotatably connected to both sides of the fixed block, and a support block is rotatably connected to the end of each rotating plate away from the fixed block. The open stiffening plates on both sides of the I-beam enhance the stability of the overall structure through the combined action of the adaptive adjustment mechanism and the stress dispersion mechanism. The adaptive adjustment mechanism, through the cooperation of the fixed block and the rotating plate, can flexibly adjust the relative position of the open stiffening plates, so that it can effectively improve the load-bearing capacity according to the stress changes of the bridge deck. At the same time, the stress dispersion mechanism is located on the I-beam, which further evenly disperses the concentrated stress borne by the bridge deck body to the I-beam, thereby reducing the risk of stress concentration at the weld joint.

[0010] Preferably, the adaptive adjustment mechanism is fixedly connected to the sleeve on the outer wall of the open stiffening plate, the inner cavity of the sleeve is slidably fitted with a screw, and the outer wall of the screw is threaded with a nut.

[0011] Preferably, a rotating ring is fixedly connected to the bottom of the nut, and the upper end of the screw is slidably engaged with the inner wall of the rotating ring through a ring groove.

[0012] Preferably, a movable plate is fixedly connected to the top of the screw, the sidewall of the movable plate slides against the outside of a plurality of open stiffening plates, and push rods are elastically connected at equal intervals to the inner cavity of the movable plate.

[0013] Preferably, the push rod slides through the top of the movable plate, and a pressing plate is fixedly connected to the top of the push rod. The top of the pressing plate abuts against the inner surface of the top of the I-beam. A cross plate is fixedly connected to the top of each of the multiple support blocks, and the ends of the multiple cross plates are jointly fixed to the movable plate. When installing the I-beam, several open stiffening plates must be reasonably configured according to the actual load-bearing requirements of the bridge. These stiffening plates are snapped together by sliding strips and connected to the rotating plate and the screw. By rotating the nut, the screw can extend or retract inside the sleeve, thereby driving the upper movable plate to move up and down.

[0014] Preferably, a pair of sliding strips are symmetrically fixed to both sides of the middle section of the I-beam, and the open stiffening plates are all slidably connected to the outer wall of the sliding strips through slots. The moving plate synchronously drives the support block to move up and down through the cross plate, thereby achieving coordinated movement with one end of the rotating plate. Since the other end of the rotating plate is fixedly connected to the open stiffening plate, their relative positions can be precisely adjusted by the up and down movement of the moving plate. The key to this structure is that by linking all the open stiffening plates together through the rotating plate, they can adjust their spacing at equal intervals and move in a scaling manner. When the spacing of the open stiffening plates decreases, increasing their number simultaneously can significantly improve the load-bearing capacity of the bridge deck body.

[0015] Preferably, the stress dispersion mechanism includes several circular holes equidistantly opened on both sides of the top of the I-beam, and the edges of the circular holes are provided with circular welds to the bridge deck body; by forming several circular weld rings at the edges of the circular holes, not only is the bolt installation process eliminated, but also the local stress concentration caused by the difference in bolt preload is avoided, reducing the risk of crack propagation.

[0016] Preferably, the top of the I-beam is provided with a T-shaped groove, and a nail plate is slidably connected in the T-shaped groove.

[0017] Preferably, the bottom of the nail plate is elastically connected to the bottom of the T-groove via a rubber pad, and the top of the nail plate abuts against the weld seam.

[0018] Preferably, the top of the T-groove is filled with adhesive, which connects the bridge deck body to the I-beam; the nail plate contacts the middle part of the top of the I-beam by squeezing the rubber pad, and the adhesive filled in the inner cavity of the T-groove further enhances the connection strength between the bridge deck and the I-beam. This design allows the stress borne by the weld to be concentrated and guided to the nail plate, and finally distributed to the I-beam.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] This invention enhances the stability of the I-beam's load-bearing capacity on the bridge deck by using a combination of rotating plates, moving plates, and push rods. The rotating plate connects all the open stiffening plates, allowing for synchronous and equidistant adjustment of their spacing and movement. Reducing the spacing of the open stiffening plates and appropriately increasing their number results in a stronger load-bearing capacity for the bridge deck. Simultaneously, the moving plate's internal springs compress the push rods, creating a positive correlation between the compression force between the compression plate and the I-beam and the density of the open stiffening plates, thus strengthening the support effect and increasing service life.

[0021] This invention enhances the stress dispersion effect of the I-beam on the bridge deck weld joint by setting up a combination of structures. By welding at the edge of the circular hole to connect the I-beam to the bridge deck, it not only eliminates the need for bolt installation and avoids the problem of local stress concentration caused by differences in bolt preload, which could accelerate crack propagation, but also disperses concentrated stress to the entire weld area by wrapping the edge of the circular hole with a continuous annular weld, reducing local stress peaks. The annular weld forms a closure effect, which can effectively resist shear and peel forces between plates. Furthermore, the circumferential welding eliminates sharp corners at the hole edge, blocking the initial path of fatigue cracks. The heat input of the annular weld is evenly distributed along the circumference, which can significantly reduce the risk of thermal deformation of the plates compared to local spot welding or long straight welds. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram showing the structural fit between the I-beam and the open stiffening plate of the present invention;

[0024] Figure 3 This is a schematic diagram of the side cross-section structure of the present invention;

[0025] Figure 4 For the present invention Figure 3 A magnified view of the structure at point A in the middle;

[0026] Figure 5 For the present invention Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0027] Figure 6 This is a schematic diagram showing the structural fit between the extrusion plate and the bridge deck body of the present invention;

[0028] Figure 7 This is a schematic diagram showing the structural fit between the rotating plate and the open stiffening plate of the present invention;

[0029] Figure 8 This is a schematic diagram showing the structural fit between the horizontal plate and the support block of the present invention.

[0030] In the picture:

[0031] 100. Bridge deck body; 200. Welded joint; 300. I-beam; 400. Open stiffening plate; 500. Adaptive adjustment mechanism; 510. Sleeve; 520. Nut; 530. Moving plate; 540. Push rod; 550. Extrusion plate; 560. Sliding bar; 570. Fixing block; 580. Cross plate; 590. Screw; 5100. Rotary ring; 5110. Rotating plate; 5120. Support block; 600. Stress dispersion mechanism; 610. Nail plate; 620. Round hole; 630. Circular weld; 640. Rubber pad; 650. Adhesive; 660. T-groove. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figures 1 to 8 As shown, the present invention provides a reinforcement device for welded joints of bridge deck structures, including a bridge deck body 100, which is provided with a plurality of blocks and welded joints 200 between them. I-beams 300 are welded to the bottom of the bridge deck body 100 at the welded joints 200. A plurality of open stiffening plates 400 are slidably abutted against both sides of the I-beams 300. The device also includes:

[0034] An adaptive adjustment mechanism 500 is located on the open stiffening plate 400;

[0035] Stress dispersion mechanism 600 is located on I-beam 300;

[0036] The adaptive adjustment mechanism 500 includes a fixed block 570 that is fixed through the middle of the open stiffening plate 400. Rotating plates 5110 are rotatably connected to both sides of the fixed block 570. Support blocks 5120 are rotatably connected to the end of the rotating plates 5110 away from the fixed block 570.

[0037] The above-mentioned scheme involves a bridge deck body 100 tightly connected to the I-beam 300 via welded joints 200. The open stiffening plates 400 on both sides of the I-beam 300 enhance the overall structural stability through the combined action of an adaptive adjustment mechanism 500 and a stress dispersion mechanism 600. The adaptive adjustment mechanism 500, through the cooperation of a fixed block 570 and a rotating plate 5110, can flexibly adjust the relative position of the open stiffening plates 400, effectively improving their load-bearing capacity according to changes in the stress on the bridge deck. Simultaneously, the stress dispersion mechanism 600, located on the I-beam 300, further evenly distributes the concentrated stress borne by the bridge deck body 100 to the I-beam 300, thereby reducing the risk of stress concentration at the welded joints 200 and ensuring the safety and durability of the structure. This design creates a close collaborative working relationship between the various components, optimizing the overall performance of the bridge.

[0038] like Figures 2 to 4 , Figure 7 , Figure 8 As shown, the adjusting mechanism 500 is fixedly connected to the sleeve 510 on the outer wall of the open stiffening plate 400. A screw 590 is slidably sleeved within the inner cavity of the sleeve 510, and a nut 520 is threaded onto the outer wall of the screw 590. A rotating ring 5100 is fixedly connected to the bottom of the nut 520, and the upper end of the screw 590 is slidably engaged with the inner wall of the rotating ring 5100 via an annular groove. A movable plate 530 is fixedly connected to the top of the screw 590, and the side wall of the movable plate 530 slidably abuts against the outer side of the multiple open stiffening plates 400. The inner cavity of the movable plate 530... Push rods 540 are equidistantly elastically connected; push rods 540 slide through the top of the movable plate 530, and a pressing plate 550 is fixed to the top of push rods 540. The top of the pressing plate 550 abuts against the inner surface of the top of the I-beam 300. A cross plate 580 is fixed to the top of each of the multiple support blocks 5120, and the ends of the multiple cross plates 580 are fixed to the movable plate 530. A pair of sliding strips 560 are symmetrically fixed to both sides of the middle of the I-beam 300, and the open stiffening plates 400 are slidably connected to the outer wall of the sliding strips 560 through slots.

[0039] The above scheme is adopted in modern bridge engineering, where the design and installation of the load-bearing structure are crucial for ensuring bridge safety and durability. When installing the I-beam 300, several open stiffening plates 400 must be rationally configured according to the actual load-bearing requirements of the bridge. These stiffening plates are engaged via sliding strips 560 and connected to the rotating plate 5110 and the screw 590. Rotation of the nut 520 allows the screw 590 to extend or retract within the sleeve 510, thereby driving the upper movable plate 530 to move up and down. During this process, the movable plate 530 synchronously drives the support block 5120 to move up and down via the cross plate 580, thus achieving coordinated movement with one end of the rotating plate 5110. Since the other end of the rotating plate 5110 is fixedly connected to the open stiffening plates 400, their relative positions can be precisely adjusted by the up and down movement of the movable plate 530. The key to this structure is that by linking all the open stiffening plates 400 together through the rotating plate 5110, they can be equidistantly adjusted in spacing and moved in a scaling manner. When the spacing of the open stiffening plates 400 decreases, increasing their number simultaneously can significantly improve the load-bearing capacity of the bridge deck body 100. This is because the stiffening plates effectively distribute the load applied to the bridge deck. When their spacing increases and their number decreases, the load borne by the bridge deck decreases accordingly, thus affecting the overall structural stability. Further analysis reveals that, in addition to adjusting the spacing of the open stiffening plates 400, when the screw 590 pushes the moving plate 530 up and down, the internal spring is compressed, thereby changing the contact force between the pressing plate 550 and the I-beam 300 via the push rod 540. Specifically, when the moving plate 530 moves upward, the spring is compressed, and the force exerted by the pressing plate 550 on the edge of the I-beam 300 increases accordingly. This change not only enhances the reverse support force of the I-beam 300 on the bridge deck body 100 but also, to some extent, offsets the downward gravity applied by the vehicle during travel, effectively improving the load-bearing capacity of the bridge deck. Furthermore, when the rotating plate 5110 contracts and the open stiffening plates 400 are densely arranged, the compressive force is also positively correlated, which further enhances the load-bearing stability of the bridge and improves its load-bearing capacity and service life.

[0040] like Figures 5 to 7 As shown, the stress dispersion mechanism 600 includes several circular holes 620 equidistantly opened on both sides of the top of the I-beam 300, and the edges of the circular holes 620 are provided with circular welds 630 to the bridge deck body 100; a T-shaped groove 660 is opened on the top of the I-beam 300, and a nail plate 610 is slidably connected in the T-shaped groove 660; the bottom of the nail plate 610 is elastically connected to the bottom of the T-shaped groove 660 through a rubber pad 640, and the top of the nail plate 610 abuts against the weld 200; the top of the T-shaped groove 660 is filled with adhesive 650, and the adhesive 650 connects the bridge deck body 100 to the I-beam 300.

[0041] The above-mentioned solution employs a circular hole 620 welding method to improve the connection strength between the I-beam 300 and the bridge deck body 100. By forming several circular weld rings around the edge of the circular hole 620, not only is the bolt installation process eliminated, but local stress concentration caused by differences in bolt preload is also avoided, reducing the risk of crack propagation. The circumferential weld design effectively disperses concentrated stress throughout the weld area, enhancing the structure's shear and peel strength while reducing the risk of thermal deformation. Furthermore, a nail plate 610 is provided at the bottom of the weld seam 200 on the bridge deck body 100. The nail plate 610 contacts the top middle portion of the I-beam 300 through a compression rubber pad 640. The adhesive 650 filling the inner cavity of the T-groove 660 further enhances the connection strength between the bridge deck body 100 and the I-beam 300. This design allows the stress borne by the weld seam 200 to be concentrated and guided to the nail plate 610, and ultimately dispersed onto the I-beam 300. Meanwhile, the circular welds 630 on both sides of the I-beam 300 continue to disperse the stress at the edges of the bridge deck body 100 joints. This effectively reduces the stress borne by the weld joints 200, decreases crack formation, and significantly extends the service life of the bridge deck. In summary, this device, through a reasonable structural combination and precise mechanical adjustment, effectively improves the bridge's load-bearing capacity and stability. The flexible adjustment of the open stiffening plate 400, the robust connection of the I-beam 300, and the optimization of the welding process all provide reliable guarantees for the long-term use of the bridge, enhancing the safety and durability of the bridge structure.

[0042] Working principle and usage process of this invention:

[0043] First, when installing the I-beam 300, according to the bridge's load-bearing requirements, a number of open stiffening plates 400 are snapped onto the sliding strip 560. Then, the corresponding rotating plates 5110 and screws 590 are installed. By rotating the nut 520, the screw 590 extends or retracts within the sleeve 510, thereby driving the upper moving plate 530 to move up and down. During the movement of the moving plate 530, the support block 5120 is moved up and down synchronously via the cross plate 580, thus moving one end of each pair of rotating plates 5110 accordingly. Since the other end of each rotating plate 5110 is rotatably connected to the fixed block 570, and the fixed block 570 is fixed to the open stiffening plate 400, the up and down movement of one end of a pair of rotating rings 5100 can pull the corresponding pair of open stiffening plates 400 onto the sliding strip 560, causing them to slide closer or further apart. By connecting all the open stiffening plates 400 through the rotating plate 5110, the spacing of the open stiffening plates 400 can be adjusted synchronously and equidistantly, allowing for scaling and movement. When the spacing of the open stiffening plates 400 is reduced and the number of open stiffening plates 400 is appropriately increased, the load-bearing capacity of the bridge deck body 100 is stronger. Conversely, when the spacing of the open stiffening plates 400 is larger and the number is smaller, the load-bearing capacity of the bridge deck body 100 is smaller.

[0044] Secondly, when the screw 590 pushes the moving plate 530 up and down, it also drives the spring inside the moving plate 530 to compress the push rod 540, thereby changing the compressive force between the compression plate 550 at the top of the push rod 540 and the I-beam 300. When the moving plate 530 moves upward, it compresses the spring, increasing the pressure of the compression plate 550 on the edge of the I-beam 300. This increases the reverse support force of the I-beam 300 on the bridge deck body 100, which can, to some extent, offset the downward gravity of the vehicle traveling on the bridge deck body 100, further increasing the load-bearing capacity of the bridge deck body 100. Furthermore, when the rotating plate 5110 contracts, the density of the open stiffening plates 400 is positively correlated with the compressive force. Conversely, as the spacing of the open stiffening plates 400 increases, the compressive force of the compression plate 550 on the I-beam 300 is appropriately reduced, thereby enhancing the load-bearing stability of the I-beam 300.

[0045] Finally, by setting the circular holes 620, the I-beam 300 and the bridge deck body 100 are connected to each other by welding along the edges of the circular holes 620, forming several circular weld rings. This not only eliminates the need for bolt installation and avoids the possibility of local stress concentration caused by differences in bolt preload, which could accelerate crack propagation, but also disperses concentrated stress throughout the weld area by continuously wrapping the edges of the circular holes 620 with circumferential welds, reducing local stress peaks. The circumferential welds form a closed "hoop" effect, which can effectively resist shear and peel forces between plates, reducing the risk of thermal deformation of the plates. Furthermore, the bottom of the weld seam 200 on the bridge deck body 100 abuts against the nail plate 610, the nail plate 610 presses the rubber pad 640 in the middle of the top of the I-beam 300, and the inner cavity of the top of the T-groove 660 is filled with adhesive 650 to connect the bridge deck body 100 and the I-beam 300. The stress on the weld seam 200 can be concentrated and directed to the nail plate 610, and then dispersed to the I-beam 300. In conjunction with the circular weld seams 630 on both sides of the I-beam 300, the stress on the edge of the joint of the bridge deck body 100 can be further dispersed. This effectively reduces the stress on the weld seam 200, thereby reducing the occurrence of cracks and enhancing the service life of the bridge deck body 100.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reinforcement device for welded joints in bridge deck structures, comprising a bridge deck body (100), wherein the bridge deck body (100) is provided with a plurality of blocks and welded joints (200) are formed between them, and I-beams (300) are welded to the bottom of the bridge deck body (100) at the welded joints (200), and a plurality of open stiffening plates (400) are slidably abutted against on both sides of the I-beams (300), characterized in that: Also includes: An adaptive adjustment mechanism (500) is located on the open stiffening plate (400); A stress-dispersing mechanism (600) is located on the I-beam (300); The adaptive adjustment mechanism (500) includes a fixed block (570) that is fixed through the middle of the open stiffening plate (400). Both sides of the fixed block (570) are rotatably connected to a rotating plate (5110), and the end of the rotating plate (5110) away from the fixed block (570) is rotatably connected to a support block (5120).

2. The reinforcement device for bridge deck structure welds according to claim 1, characterized in that: The adaptive adjustment mechanism (500) is fixedly connected to the sleeve (510) on the outer wall of the open stiffening plate (400). The inner cavity of the sleeve (510) is slidably fitted with a screw (590), and the outer wall of the screw (590) is threaded with a nut (520).

3. The reinforcement device for bridge deck structure welds according to claim 2, characterized in that: The bottom of the nut (520) is fixedly connected to a swivel ring (5100), and the upper end of the screw (590) is slidably engaged with the inner wall of the swivel ring (5100) through a ring groove.

4. The reinforcement device for bridge deck structure welds according to claim 3, characterized in that: The top of the screw (590) is fixedly connected to a movable plate (530), the side wall of the movable plate (530) slides against the outside of a plurality of open stiffening plates (400), and the inner cavity of the movable plate (530) is elastically connected to push rods (540) at equal intervals.

5. The reinforcement device for bridge deck structure welds according to claim 4, characterized in that: The push rod (540) slides through the top of the moving plate (530), and the top of the push rod (540) is fixedly connected to the extrusion plate (550). The top of the extrusion plate (550) abuts against the inner surface of the top of the I-beam (300). The tops of the multiple support blocks (5120) are all fixedly connected to the horizontal plates (580), and the ends of the multiple horizontal plates (580) are jointly fixed to the moving plate (530).

6. The reinforcement device for bridge deck structure welds according to claim 5, characterized in that: A pair of sliding strips (560) are symmetrically fixed on both sides of the middle part of the I-beam (300), and the open stiffening plates (400) are all slidably connected to the outer wall of the sliding strips (560) through slots.

7. The reinforcement device for bridge deck structure welds according to claim 6, characterized in that: The stress dispersion mechanism (600) includes a number of circular holes (620) equidistantly opened on both sides of the top of the I-beam (300), and the edges of the circular holes (620) and the bridge deck body (100) are provided with circular welds (630).

8. The reinforcement device for bridge deck structure welds according to claim 7, characterized in that: The top of the I-beam (300) is provided with a T-shaped groove (660), and a nail plate (610) is slidably connected in the T-shaped groove (660).

9. The reinforcement device for bridge deck structure welds according to claim 8, characterized in that: The bottom of the nail plate (610) is elastically connected to the bottom of the T-groove (660) via a rubber pad (640), and the top of the nail plate (610) abuts against the weld seam (200).

10. The reinforcement device for bridge deck structure welds according to claim 9, characterized in that: The top of the T-groove (660) is filled with adhesive (650), which connects the bridge deck body (100) to the I-beam (300).

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