Cast-in-place composite beam integrated bridge deck device and construction method thereof

Abstract

The invention discloses a cast-in-place composite beam integrated bridge deck device and a construction method. The device comprises a bottom supporting plate, a shearing force fixing device, a movable tooth connector, a protective formwork, a flexible reinforcing strip, a perforated steel bar and concrete. The construction method comprises the steps that the shearing force fixing devices are transversely arranged on the bottom supporting plate at intervals along the bridge, and tenon-embedded convex teeth and holes are formed in the tops for penetrating of perforated steel bars; the bottom supporting plate is combined with the protective template through the movable tooth connector, and the movable tooth connector is designed in an adjustable occlusion manner, so that the connection stability is improved, and on-site assembly is facilitated; the flexible reinforcing strips and the shearing force fixing devices are cooperatively connected with high-strength bolts in a tenon-and-mortise embedding manner; all the assemblies form an overall stress system through concrete pouring. The panel device is light in dead weight, small in thickness and high in rigidity, and the bottom supporting plate and the protective formwork have the functions of a structural layer and a construction bottom formwork; during construction, on-site splicing eliminates the traditional template dismounting and welding procedures, shortens the construction period and realizes green construction.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and particularly relates to an in-situ composite beam integrated bridge deck device and a construction method thereof. Background Art

[0002] The bridge deck is a key component of the bridge structure. Located at the topmost layer of the bridge deck, it directly bears the forces from vehicle loads and environmental effects. Its main function is to provide a flat traffic surface and effectively transfer the loads to the lower structure. To meet the requirements of bridges under different environments and usage conditions, the bridge deck is usually designed with materials such as reinforced concrete or steel, and must have sufficient strength, crack resistance, and durability to cope with various external factors such as long-term loads, fatigue, and natural erosion. However, there are some significant drawbacks in the actual application of the current mainstream reinforced concrete bridge decks and steel bridge decks.

[0003] Due to its relatively large structural self-weight, the reinforced concrete bridge deck is usually not suitable for the design and construction of long-span bridges. The self-weight not only increases the demand for the bearing capacity of the lower structure but also restricts the flexibility of the bridge span to a certain extent. During long-term use, the reinforced concrete bridge deck is prone to diseases such as cracks, spalling, and surface pits, which significantly reduce the service performance and durability of the bridge deck. The generation of cracks often stems from the brittle characteristics of concrete materials. Especially under the action of repeated loads or temperature changes, the expansion of cracks will further weaken the overall stability of the structure. In addition, the construction process of the reinforced concrete bridge deck is relatively cumbersome. The installation and removal of templates are required for concrete pouring. This process not only prolongs the construction period but also causes great interference to the traffic under the bridge and the surrounding environment. After the construction is completed, once problems such as cracks appear, the complexity and cost of later maintenance also increase. For example, repairing cracks or replacing damaged components requires a large amount of manpower and material resources, and may involve traffic control, further increasing the usage cost and the impact on society. Therefore, although the reinforced concrete bridge deck is widely used in medium and small span bridges, its disadvantages of large self-weight, easy cracking, long construction period, and high maintenance cost cannot be ignored in engineering practice.

[0004] In contrast, steel bridge decks are often preferentially selected for the design of medium and small - span bridges due to their advantages such as light weight, high load - bearing capacity, and convenient construction. The excellent mechanical properties of steel enable it to bear large loads with a relatively light structural weight. At the same time, the prefabrication and assembly characteristics of steel bridge decks significantly shorten the construction time and reduce the interference to traffic. However, steel bridge decks also have undeniable defects, especially in terms of fatigue performance. Under the cyclic action of vehicle loads, fatigue cracking is prone to occur at the welded parts of steel bridge decks, which poses a threat to the overall safety of the structure during long - term use. The occurrence of welding cracks not only reduces the durability of steel bridge decks but may also induce more serious structural failures. In addition, the sensitivity of steel to corrosion is also a major problem. Especially in humid environments or coastal areas, steel bridge decks are vulnerable to rust, and regular anti - corrosion treatment and maintenance are required, which undoubtedly increases the long - term operation cost. To slow down the corrosion rate, protective coatings are usually applied or weathering steel is used, but these measures cannot completely eliminate the corrosion risk, and the peeling or failure of the protective coating may still expose the steel to a harsh environment.

[0005] In summary, traditional reinforced concrete bridge decks and steel bridge decks both have certain limitations in their respective application fields and urgently need to be improved. How to propose a new type of integrated composite bridge deck structure with high stiffness, stable structure, and fast construction is a technical problem that needs to be solved urgently. Summary of the Invention

[0006] Object of the Invention: Aiming at the deficiencies in the prior art, the present invention proposes a cast - in - place composite beam integrated bridge deck and its construction method. By means of a shear fixing device, the right - angle stress concentration at the junction of the cross - brace wing plate and the clamping vertical plate is eliminated, reducing the fatigue risk under alternating loads; while meeting the strength and durability requirements, the structure is stable and can be constructed quickly, reducing formwork installation and solving the practical problems existing in traditional reinforced concrete slabs; the integrated bridge deck also optimizes the material use and load distribution of the bridge deck, improving the economy and reliability of the bridge, and at the same time showing excellent crack resistance and anti - aging ability during the long - term service of the bridge.

[0007] Technical Solution: The cast - in - place composite beam integrated bridge deck device of the present invention includes a bottom support plate, a shear fixing device, a moving - tooth connector, a formwork guard, a flexible reinforcement strip, and a perforated steel bar.

[0008] A shear - fixing chute is provided above the bottom support plate; a mortise groove is provided on the flexible reinforcement strip; the moving - tooth connector is located on the side of the bottom support plate and is connected to the formwork guard.

[0009] The shear fixing device includes a clamping vertical plate embedded in the shear fixing chute, and horizontal support wings are connected to both sides of the upper part of the clamping vertical plate; tenon-inserted convex teeth that are inserted into the mortise groove are provided at the ends of the horizontal support wings, fixing holes are distributed on both sides of the tenon-inserted convex teeth, and bolts connecting flexible reinforcement strips are arranged in the fixing holes.

[0010] Holes for passing through perforated steel bars are distributed on the clamping vertical plate and the shear fixing device; anchor bolt holes are formed on the horizontal support wings, and long anchor bolts connected to the bottom support plate penetrate through the anchor bolt holes.

[0011] The moving tooth connector includes a support base, a clamping plate and a wire moving tooth rail; the support base is fixed above the bottom support plate, a fixed bearing substrate is arranged on the support base, and driving wheels that mesh and slide with the wire moving tooth rail are arranged on the clamping plate; a driving wheel shaft is arranged between the driving wheel and the clamping plate.

[0012] A wheel shaft fixing pin for fixing the driving wheel shaft is arranged between the fixed bearing substrate and the clamping plate.

[0013] Epoxy mortar is smeared in the mortise groove of the flexible reinforcement strip, and the mortise groove is fitted with the tenon-inserted convex teeth.

[0014] The surface of the formwork is coated with a galvanized layer.

[0015] Concrete is poured into the framework composed of the bottom support plate, the shear fixing device, the moving tooth connector, the formwork and the perforated steel bars.

[0016] The flexible reinforcement strips are longitudinally distributed and fixed on the side surfaces of the formwork.

[0017] Semicircular holes for passing through perforated steel bars are distributed and formed on the clamping vertical plate and the shear fixing device.

[0018] The construction method of the cast-in-situ combined beam integral bridge deck device of the present invention is as follows:

[0019] Step (1): Cut and fix chutes on the upper surface of the bottom support plate to ensure the surface is flat, serving as the basic support structure of the bridge deck and providing support for subsequent installation of the shear fixing device and the moving tooth connector.

[0020] Step (2): Insert the clamping vertical plate of the shear fixing device into the shear fixing chute of the bottom support plate to enable the clamping vertical plate to be slidably connected to the shear fixing chute; fixedly connect the horizontal support wings to the upper side of the clamping vertical plate to ensure that the horizontal support wings are parallel to each other, forming a stable shear force transmission structure.

[0021] Step (3): Form tenon-inserted convex teeth at the ends of the horizontal support wings by precision milling, and reserve distributed holes on both sides of the tenon-inserted convex teeth. Weld the flexible reinforcement strips longitudinally along the upper edge of the formwork along the bridge deck, form mortise grooves on the flexible reinforcement strips, and fit the mortise grooves with the tenon-inserted convex teeth. Use high-strength bolts to fixedly connect the flexible reinforcement strips with the shear fixing device to form an integral and jointly stressed structure.

[0022] Step (4): Fix the support base of the movable tooth connector to the upper surface of the side of the bottom support plate to form a stable basic support structure. Fix and connect the solid support substrate on the support base to enhance the overall rigidity of the formwork. Clamp the formwork with the clamping plate and fixedly connect it with the solid support substrate to form an integral body. Set driving wheels along the side of the clamping plate, engage the driving wheels with the linear movable tooth track, and the driving wheels are slidably connected along the linear movable tooth track to achieve precise adjustment of the formwork. Fix the driving wheel shaft between the engaging driving wheel and the clamping plate with a wheel shaft fixing pin to prevent displacement after the gear system is fixed.

[0023] Step (5): Open holes at the top of the clamping vertical plate; Pass perforated steel bars through the holes; Open upper anchor bolt holes in the upper part of the cross brace wing plate, use long anchor bolts to pass through the upper anchor bolt holes and fixedly connect them to the bottom support plate;

[0024] Step (6): Pour concrete within the framework composed of the bottom support plate, shear force fixing device, movable tooth connector, formwork and perforated steel bars to form the bridge deck concrete layer;

[0025] Step (7): Lay a waterproof layer and an asphalt concrete surface layer on the bridge deck concrete layer, and finally pour the guardrail concrete.

[0026] In step (5), open semi-circular holes at the top of the clamping vertical plate; Pass perforated steel bars through the semi-circular holes.

[0027] In step (7), perform hot-dip galvanizing treatment on the formwork, lay a waterproof layer and an asphalt concrete surface layer on the bridge deck concrete layer, and finally pour the guardrail concrete.

[0028] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0029] (1) By introducing the shear force fixing device, the cast-in-situ combined beam integrated bridge deck device of the present invention eliminates the right-angle stress concentration at the intersection of the cross brace wing plate and the clamping vertical plate, reduces the fatigue risk under alternating loads, and also through the mortise and tenon assembly positioning of the tenon-inserted convex teeth and the flexible reinforcement strip, while expanding the concrete contact inclination angle to enhance the anchoring effect and improve the shear bearing capacity.

[0030] (2) The shear force fixing device of the present invention sets perforated steel bars through the semi-circular holes of the clamping vertical plate, significantly enhancing the stability of the bridge deck under the action of shear force, while optimizing the force transmission path and reducing the stress concentration problem. Secondly, the integrated bridge deck adopts the formwork design, which shows unique advantages in both function and construction. The formwork not only serves as the main body of the guardrail but also acts as the construction formwork for the bridge deck concrete layer. This integrated design eliminates the installation and removal work of traditional formworks, significantly shortening the construction period and reducing the project cost.

[0031] (3) The formwork of the present invention is connected to the bottom support plate through a moving tooth connector, and the moving tooth connector is connected to the linear moving tooth rail through the engagement of a biting drive wheel, realizing the precise adjustment of the formwork and ensuring the flexibility and accuracy of the installation position. In addition, the stable design of the moving tooth connector combined with the clamping plate and the support base enhances the connection strength between the formwork and the bottom support plate, improving the rigidity and impact resistance of the overall structure.

[0032] (4) At the same time, the formwork is welded with flexible reinforcement bars, and then epoxy mortar is applied in the mortise grooves of the flexible reinforcement bars to fit with the tenon-embedded convex teeth, and the flexible reinforcement bars are connected to the shear fixing device with high-strength bolts, forming a unified force-bearing system. This overall coordinated force-bearing form improves the flexural rigidity and impact resistance of the bridge deck, effectively resisting the action of vehicle loads and the external environment.

[0033] (5) The integrated bridge deck device of the present invention achieves a good balance between prefabrication of components and on-site assembly. Key components such as the bottom support plate, formwork, shear fixing device, and moving tooth connector are prefabricated in a standardized manner in the factory, ensuring the processing accuracy and quality stability of the components. During on-site construction, only a small amount of welding and high-strength bolts are required to assemble each component in place, reducing the complex processes in traditional on-site construction, improving the construction efficiency, and reducing the impact of external factors such as weather on the construction progress. After the formwork and the bridge deck concrete layer form an integral structure, the joints and nodes are significantly reduced, significantly reducing the risk of rainwater leakage and corrosion.

[0034] (6) The connections between various functional components of the integrated bridge deck device of the present invention adopt standardized designs. If some components need to be replaced or repaired in the later stage, only partial disassembly is required to complete, further improving the economy and operability of bridge maintenance. Generally speaking, the integrated bridge deck with a shear fixing device and a formwork shows significant advantages in terms of load-bearing performance, construction efficiency, maintenance convenience, etc., and has broad application prospects.

[0035] (7) The integrated bridge deck of the present invention, as a new structure, has an optimized material and structure design, overcoming many defects of traditional bridge decks, and showing excellent performance especially in terms of durability, construction efficiency, and maintenance cost. Description of the Drawings

[0036] Figure 1 is a schematic structural diagram of the cast-in-place composite beam integrated bridge deck device of the present invention;

[0037] Figure 2 is a schematic structural diagram of the steel skeleton of the cast-in-place composite beam integrated bridge deck device of the present invention;

[0038] Figure 3It is a schematic structural diagram of the flexible reinforcement strip and shear fixing device for the cast-in-situ composite beam integral bridge deck of the present invention;

[0039] Figure 4 It is a schematic diagram of the detailed structure of the moving tooth connector and formwork for the cast-in-situ composite beam integral bridge deck of the present invention;

[0040] Figure 5 It is a cross-sectional view of the cast-in-situ composite beam integral bridge deck device of the present invention;

[0041] Figure 6 It is an elevation view of the cast-in-situ composite beam integral bridge deck device of the present invention;

[0042] Figure 7 It is a structural diagram of the shear fixing device in the present invention;

[0043] Figure 8 It is a structural diagram of the moving tooth connector in the present invention. Detailed implementation mode

[0044] Figure 1-8 Among them: 1 bottom support plate, 2 shear fixing device, 201 tenon-embedded convex tooth, 202 cross brace wing plate, 203 clamping vertical plate, 204 hole, 205 upper anchor bolt hole, 3 perforated steel bar, 4 moving tooth connector, 401 clamping plate, 402 driving wheel, 403 wire moving tooth rail, 404 support base, 405 fixed bearing substrate, 406 wheel shaft fixing pin, 5 formwork, 6 flexible reinforcement strip, 7 long anchor bolt, 8 guardrail concrete, 9 bridge deck concrete layer, 10 shear fixing chute, 11 mortise groove.

[0045] As Figures 1 to 8 shown, the cast-in-situ composite beam integral bridge deck device of the present invention includes a bottom support plate 1, a shear fixing device 2, a moving tooth connector 4, a formwork 5, a flexible reinforcement strip 6, a perforated steel bar 3 and concrete. The shear fixing device 2 is located on the upper surface of the bottom support plate 1. The moving tooth connector 4 is arranged on the side of the bottom support plate 1 and is connected to the formwork 5. The formwork 5 is adjustably fixed along the side surface of the bottom support plate 1 through the moving tooth connector 4. The flexible reinforcement strip 6 is arranged inside the formwork 5. The perforated steel bar 3 penetrates through the shear fixing device 2 and is combined with the concrete to improve the shear transfer capacity and bending stiffness of the overall structure. The formwork 5 and the bottom support plate 1 are fixedly connected into a whole through the shear fixing device 2 and the moving tooth connector 4.

[0046] In the embodiment of the present invention, the shear fixing device 2 is composed of a tenon-embedded convex tooth 201, a cross brace wing plate 202, a clamping vertical plate 203 and an upper anchor bolt hole 205 component, aiming to enhance the stability and shear transfer capacity of the structure. Holes 204 are distributed on the clamping vertical plate 203. In this embodiment, the holes 204 are semi-circular holes.

[0047] The clamping vertical plate 203 is embedded in the shear-fixing chute 10 of the bottom support plate 1 and is tightly fitted with the shear-fixing chute 10 through a sliding connection for installation adjustment and force support. The shear-fixing chute 10 is opened on the upper surface of the bottom support plate 1 to provide guidance and positioning for the clamping vertical plate 203. The cross-bracing wing plates 202 are arranged on the upper side of the shear force fixing device 2, parallel to each other and fixedly connected to the clamping vertical plate 203, which not only strengthens the lateral support ability of the overall structure but also further improves the bending stiffness and the uniformity of shear force distribution.

[0048] In this embodiment, a semi-circular hole 204 is opened at the top end of the clamping vertical plate 203 in the shear force fixing device 2, and the semi-circular holes 204 are equal in size and evenly distributed longitudinally along the clamping vertical plate 203. A steel bar passes through the semi-circular holes 204 at the same position of the shear force fixing device 2. Uniformly distributed upper anchor bolt holes 205 are provided on the upper part of the cross-bracing wing plates 202, and the long anchor bolts 7 pass through the upper anchor bolt holes 205 and are fixedly connected to the bottom support plate 1.

[0049] Tenon-inserted convex teeth 201 are provided at the ends of the cross-bracing wing plates 202 in the shear force fixing device 2. The tenon-inserted convex teeth 201 are processed by a precision milling process to ensure the accuracy and stability of the connection. Holes are uniformly reserved on both sides of the tenon-inserted convex teeth 201, and these holes correspond one by one to the holes on the flexible reinforcement strip 6 to facilitate accurate alignment and firm connection. The flexible reinforcement strip 6 is welded longitudinally along the upper edge of the formwork 5 along the bridge deck. Mortise grooves 11 are opened on the flexible reinforcement strip 6. The mortise grooves 11 are tightly fitted with the tenon-inserted convex teeth 201 to form a stable inserted connection structure to enhance the shear resistance. The flexible reinforcement strip 6 is fixedly connected to the shear force fixing device 2 through high-strength bolts, which not only improves the overall stiffness and anti-deformation ability of the structure but also forms an integrated overall co-loading system to disperse and transfer loads, further optimizing the mechanical properties of the bridge deck.

[0050] The moving tooth connector 4 includes a clamping plate 401, a driving wheel 402, a wire moving tooth rail 403, a support base 404, a fixed bearing substrate 405 and a wheel shaft fixing pin 406, and is used to fixedly connect the formwork 5 and the bottom support plate 1. The support base 404 is fixedly connected to the upper surface of the bottom support plate 1 to form a stable basic support structure. The fixed bearing substrate 405 is fixedly connected to the support base 404 to enhance the overall rigidity of the formwork 5. The clamping plate 401 clamps the formwork 5 and is fixedly connected to the fixed bearing substrate 405 to form an integral body.

[0051] In the moving tooth connector 4, the driving wheel 402 is arranged along the side of the clamping plate 401 and is meshed and connected with the wire moving tooth rail 403, and power transmission is achieved through precise gear engagement. The driving wheel 402 drives the clamping plate 401 to be slidably connected on the wire moving tooth rail 403. This design ensures precise adjustment of the formwork 5 during installation, ensuring the accuracy of the position and the coordination of the structure. The wheel shaft fixing pin 406 is installed between the fixed bearing substrate 405 and the clamping plate 401, playing a role in fixing and limiting, preventing the gear system from shifting after being fixed, thereby ensuring the stability of the connection structure and the reliability of long-term use.

[0052] Preferably, the formwork is subjected to hot-dip galvanizing treatment to form a galvanized layer on the surface of the steel plate. A waterproof layer and an asphalt concrete surface layer are sequentially laid on the bridge deck concrete layer, and then the guardrail concrete is poured.

[0053] In the preferred solution of this embodiment, the thickness of the bottom support plate 1 is selected to be 8 - 12 mm.

[0054] In the preferred solution of this embodiment, the height of the clamping vertical plate of the shear force fixing device 2 is 80 - 120 mm, the width of the cross brace wing plate is 70 - 130 mm, and the thickness is 8 - 20 mm.

[0055] The construction method steps of the cast-in-situ composite beam integral bridge deck device of the present invention are as follows:

[0056] Step (1): Select the bottom support plate 1, and open a shear fixing chute 10 on its upper surface to ensure a flat surface, serving as the basic support structure of the bridge deck, and providing support for the subsequent installation of the shear force fixing device 2 and the moving tooth connector 4.

[0057] Step (2): Insert the clamping vertical plate 203 of the shear force fixing device 2 into the shear fixing chute 10 of the bottom support plate 1, so that the clamping vertical plate 203 is slidably connected with the shear fixing chute 10. The cross brace wing plate 202 is fixedly connected to the upper side of the clamping vertical plate 203 to ensure that the two cross brace wing plates 202 are parallel to each other, forming a stable shear force transmission structure.

[0058] Step (3): Form a tenon-inserting convex tooth 201 at the end of the cross brace wing plate 202 through precise milling, and evenly reserve holes on both sides of the tenon-inserting convex tooth 201. Weld the flexible reinforcement strip 6 evenly along the longitudinal direction of the bridge deck along the upper edge of the formwork 5; a mortise groove 11 is opened on the flexible reinforcement strip 6, so that the mortise groove 11 is engaged with the tenon-inserting convex tooth 201. Use high-strength bolts to fixedly connect the flexible reinforcement strip 6 with the shear force fixing device 2 to form an integral and jointly stressed structure.

[0059] Step (4): Fix the support base 404 of the movable tooth connector 4 to the upper surface of the side part of the bottom support plate 1 to form a stable basic support structure. Fix and connect the solid support substrate 405 on the support base 404 to enhance the overall rigidity of the formwork 5. Clamp the formwork 5 with the clamping plate 401 and fixedly connect it with the solid support substrate 405 to form an integral body. Arrange the driving wheel 402 along the side part of the clamping plate 401 so that it meshes with the linear moving tooth rail 403, and the driving wheel 402 is slidably connected along the linear moving tooth rail 403 to achieve precise adjustment of the position of the formwork 5. Fix the driving wheel shaft between the driving wheel 402 and the clamping plate 401 with the wheel shaft fixing pin 406 to prevent displacement after the gear system is fixed.

[0060] Step (5): A semi-circular hole 204 is opened at the top end of the clamping vertical plate 203 to ensure that the longitudinal sizes of the holes are equal and evenly distributed. Pass the perforated steel bar 3 through the semi-circular holes 204 at the same position. Uniformly distributed upper anchor bolt holes 205 are opened in the upper part of the cross brace wing plate 202. Use long anchor bolts 7 to pass through the upper anchor bolt holes 205 and fixedly connect them with the bottom support plate 1 to enhance the stability of the overall structure.

[0061] Step (6): Pour concrete within the structural framework composed of the bottom support plate 1, the shear fixing device 2, the movable tooth connector 4, the formwork 5 and the perforated steel bar 3. Combine with the perforated steel bar 3 to improve the shear transfer capacity and flexural stiffness of the overall structure, and form the bridge deck concrete layer.

[0062] Step (7): Perform hot-dip galvanizing treatment on the formwork 5 to form a galvanized layer on the surface to enhance corrosion resistance. Lay a waterproof layer and an asphalt concrete surface layer on the bridge deck concrete layer in sequence, and finally pour the guardrail concrete to complete the construction of the integrated bridge deck.

[0063] The above has shown and described the basic principles, main features and advantages of the present invention. However, the above are only specific embodiments of the present invention, and the technical features of the present invention are not limited thereto. Any other embodiments obtained by those skilled in the art without departing from the technical solution of the present invention should be covered within the patent scope of the present invention.

Claims

1. A cast-in-place composite beam integrated bridge deck device, characterized in that: It comprises a bottom support plate (1), a shear fixing device (2), a movable tooth connector (4), a template (5), a flexible reinforcement strip (6) and a perforated steel bar (3); A shearing groove (10) is provided on the top of the bottom support plate (1); a mortise groove (11) is provided on the flexible reinforcement strip (6); the movable tooth connector (4) is located on the side of the bottom support plate (1) and is connected to the guard plate (5); The shear force fixing device (2) comprises a card-embedded standing plate (203) embedded in the shear fixing sliding groove (10), and the upper two sides of the card-embedded standing plate (203) are connected to the cross-bracing wing plates (202); the ends of the cross-bracing wing plates (202) are provided with tenon-embedded protruding teeth (201) that are inserted into the mortise grooves (11), and the two sides of the tenon-embedded protruding teeth (201) are provided with fixing holes, and the fixing holes are provided with bolts connected to the flexible reinforcement strips (6); The embedded plate (203) and the shear fixing device (2) are provided with holes penetrating the perforated steel bars (3); the cross bracing wing plate (202) is provided with anchor holes (205), and the anchor holes (205) are penetrated by long anchor bolts (7) connected to the bottom support plate (1); The movable tooth connector (4) comprises a support base (404), a clamping plate (401) and a linear gear rail (403); the support base (404) is fixed above the bottom support plate (1); a fixed base plate (405) is provided on the support base (404); a driving wheel (402) meshing and sliding with the linear gear rail (403) is provided on the clamping plate (401); and a driving wheel shaft is provided between the driving wheel (402) and the clamping plate (401).

2. The cast-in-place composite beam integrated bridge deck device according to claim 1, characterized in that: A wheel axle fixing pin (406) for fixing the driving wheel axle is provided between the fixing base plate (405) and the clamping plate (401).

3. The cast-in-place composite beam integrated bridge deck device according to claim 1, characterized in that: Epoxy mortar is applied inside the mortise and tenon grooves (11) of the flexible reinforcement strip (6), and the mortise and tenon grooves (11) are engaged with the convex teeth of the tenon and tenon joints.

4. The cast-in-place composite beam integrated bridge deck device according to claim 1, characterized in that: The surface of the template (5) is coated with a zinc coating.

5. The cast-in-place composite beam integrated bridge deck device according to claim 1, characterized in that: Concrete is poured into the frame composed of the bottom support plate (1), the shear force fixing device (2), the movable tooth connector (4), the guard plate (5) and the perforated steel bars (3).

6. The cast-in-place composite beam integrated bridge deck device according to claim 1, characterized in that: The flexible reinforcement strips (6) are longitudinally distributed and fixed on the side surfaces of the template (5).

7. The cast-in-place composite beam integrated bridge deck device according to claim 1, characterized in that: Semicircular holes (204) that penetrate the perforated steel bars (3) are distributed and opened on the embedded plate (203) and the shear force fixing device (2).

8. A construction method for the cast-in-situ composite beam integrated bridge deck device according to claim 1, characterized in that: The method steps are as follows: Step (1): a shearing groove (10) is provided on the upper surface of the bottom support plate (1); Step (2): embedding the card-embedded plate (203) of the shear force fixing device (2) into the shear fixing groove (10); connecting parallel horizontal bracing wing plates (202) to both sides of the upper part of the card-embedded plate (203); Step (3): milling the end of the cross brace wing plate (202) to form a tenon-embedded protruding tooth (201), and opening fixing holes on both sides of the tenon-embedded protruding tooth (201); fixing the flexible reinforcement strip (6) along the bridge deck longitudinally on the guard plate (5), the mortise groove (11) of the flexible reinforcement strip (6) is engaged with the tenon-embedded protruding tooth (201), and the flexible reinforcement strip (6) is connected to the shear fixing device (2) using bolts; Step (4): connect the support base (404) of the movable tooth connector (4) to the upper surface of the side of the bottom support plate (1); connect the fixed support base plate (405) to the support base (404); clamp the guard plate (5) with the clamping plate (401) and connect it to the fixed support base plate (405); set a driving wheel (402) meshing with the linear gear rail (403) along the side of the clamping plate (401), and the driving wheel (402) is slidably connected along the linear gear rail (403); fix the driving wheel axle between the driving wheel (402) and the clamping plate (401) with the wheel axle fixing pin (406); Step (5): a hole (204) is formed at the top of the embedded plate (203); a perforated steel bar (3) is passed through the hole (204); an upper anchor hole (205) is formed at the upper part of the cross bracing wing plate (202); a long anchor bolt (7) is passed through the upper anchor hole (205) and fixedly connected to the bottom support plate (1); Step (6): pouring concrete in a frame consisting of the bottom support plate (1), the shear fixing device (2), the movable tooth connector (4), the guard plate (5) and the perforated steel bars (3) to form a bridge deck concrete layer (9); Step (7): laying a waterproof layer and an asphalt concrete surface layer on the bridge deck concrete layer (9), and then pouring guardrail concrete (8).

9. The construction method of the cast-in-situ composite beam integrated bridge deck device according to claim 8, characterized in that: In step (5), a semicircular hole is opened at the top of the embedded plate (203); and a perforated steel bar (3) is passed through the semicircular hole.

10. The construction method of the cast-in-situ composite beam integrated bridge deck device according to claim 8, characterized in that: In step (7), the guardrail formwork (5) is subjected to hot-dip galvanizing treatment, a waterproof layer and an asphalt concrete surface layer are laid on the bridge deck concrete layer (9), and finally the guardrail concrete (8) is poured.

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